SlideShare a Scribd company logo
1 of 10
Download to read offline
Advanced Electronic Materials II (GIG 742)
Lecture materials in pdf format: http://mse.korea.ac.kr/efml/lec-aem2.htm
Professor : Jong-Heun Lee
Engineering building, Room No. 208, TEL: 3290-3282, jongheun@korea.ac.kr

< Course Description and Objective > ]
Offer the fundamentals of ceramic processing which is related to the fabrication of representative
passive RLC components and their modules such as MLCC (Multi-Layer Ceramic Capacitor),
LTCC (Low Temperature Cofired Ceramics), chip resistor, and chip inductor. The course covers the
ceramic processing issues before sintering, which includes 1) the preparation of ceramic powder and
its characterization, 2) slurry formulation, 3) basic rheology, 4) tape casting, 5) electroding, and 6)
lamination of green sheets. Special focus will be placed upon the fabrication of electronic ceramic
components via tape casting process.

< References >
1. D. J. Shanefield, quot;Organic Additives and Ceramic Processing,quot; Kulwer (1995)
2. P. C. Hiemenz, โ€œPrinciples of colloid and surface chemistry,โ€ Dekker (1986)
3. ็คพๅœ˜ๆณ•ไบบ ๆ—ฅๆœฌ็ชฏๆฅญๅ”ๆœƒ, Ceramic processing: Powder preparation and forming (1984)
4. ้ฝŠ่—ค่•‚็พฉ, โ€œใƒ•ใ‚กใ‚คใƒณใ‚ปใƒฉใƒŸใ‚ฏใ‚นใฎๆˆๅฝขใจๆœ‰ๆฉŸๆๆ–™,โ€
5. G. Y. Onoda, quot;Ceramic Processing Before Firing,quot; John Wiley & Sons (1978)
6. J. S. Reed, quot;Principle of Ceramics Processing,quot; John Wiley & Sons (1995)

<Grading>
final exam (50%) term paper (20%), report (10%), course attendance (20%)
Advanced Electronic Ceramics I (2004)




                                Coverage of the lecture
     1. The review of the powder preparations
       (Focus was placed upon the electroceramics powder)
     (target): preparation of fine, high-purity, less-agglomerated powder

     2. Study the fundamental of the powder dispersion in liquid
     - The basics of the colloid chemistry
       (electric double layer, Zeta potential, DLVO theory)
     - Electrostatic and Steric stabilization of colloid

     3. The slurry formation for the tape casting
     - The understanding of the organic binder, plasticizer, solvent, dispersant
     - The formulation of above constituents for the good dispersion

     4. The processing issues related with the mass production of passive
        components. (ball milling, deairing, tape casting, drying, electroding
        screen printing, alignment, punching, cutting, and lamination)

Advanced Electronic Ceramics I (2004)
Syllabus
     1. Overview
     2. Powder preparation 1: solid state reaction
     3. Powder preparation 2: precipitation
     4. Powder preparation 3: other methods
     5. Powder characterization 1: particle size
     6. Powder characterization 2: BET equation
     7. Mixing and Milling
     8. Compaction
     9. Dispersion of Powder in Liquid 1: Electric Double Layer
     10. Dispersion of Powder in Liquid 2: Gouy-Chapmann Theory
     11. Dispersion of Powder in Liquid 3: Zeta Potential
     12. Dispersion of Powder in Liquid 4 : DLVO theory
     13. MLCC: general
     14. Slurry Preparation and Slip Casting 1
     15. Slurry Preparation and Slip Casting 2: Viscosity
     16. Tape Casting 1
     17. Tape Casting 2
     18. Tape Casting 3: Applications 1
     19. Tape Casting 4: Applications 2
     20. Screen Printing
     21. Chip resistor
     22. LTCC1
     23. LTCC2
     24. Chip inductor and Chip varistor
Advanced Electronic Ceramics I (2004)




         Important powder characteristics in electroceramics
     Starting point 1 :
     - The fabrication of ceramic body with a high melting temperature(Tm)
       using the sintering process at a low temperature(0.7 ~ 0.9Tm)
     - requires the finer particles for the lower sintering temperature

     Starting Point 2 :
     - The high-purity powder preparation for the well-designed the
       electronic properties.
     - requires high-purity source materials and wet-chemical process

     Starting Point 3 : (in the view of electroceramics by mass production)
     - The preparation of well-dispersed slurry with a high solid loading
       (using a minimum binder, plasticizer, solvent, and dispersent)
     - results optimum particle size (1~0.1ยตm)



Advanced Electronic Ceramics I (2004)
Why Fine Powder? To reduce sintering temperature
                                                                        - full density at
    - maximize the driving force for the sintering
                                                                        1000oC
      (excess free energy of surface)
                                                                          ( ~ 0.42 Tm)
    - reduce the sintering temperature
    - provide fast densification kinetics (Herringโ€™s scaling law: t2 =ฮปn t1)
          Ex) CeO2
          - at high temperature
            4CeO2 โ†’ 2Ce2O3 + O2 (g)
           : retard the densification
          - Low-temperature sintering
                                                                                  Aggregate
            is desirable!
                                                                                  problem




      J. -G. Li, T. Ikegami, J. -H. Lee, T. Mori, Acta mater. 49, 419-426 (2001)
Advanced Electronic Ceramics I (2004)




                                What is good powder?


         1. Fine
         2. High purity
         3. Narrow particle size distribution
         4. Homogeneous composition
         5. Small agglomeration between primarily particles
         6. Good flowability (for better compaction and screen
         printing)
         7. Stability against atmosphere
         8. Spherical morphology




Advanced Electronic Ceramics I (2004)
Design of particle size for electronic ceramics (tape casting)
      For tape casting, the powder should be dispersed in a liquid slurry homogeneously.



       10-3                                10-6                       10-9     10-10(m)
                                           ยตm
       mm                                                             nm        ร…
                    Micro regime                      Nano regime

                                      Driving force for sintering
                       Utilization of the surface and interfacial properties
                 Easy to achieve dispersion              Our challenge
       Weak interaction               Dispersion   Dispersion Severe interaction
       between particles           (current)         (future)   between particles
                                  0.5 -10 ยตm       30-500 nm     (Van der Waals)
                                   1-5 m2/g        5-100 m2/g

Advanced Electronic Ceramics I (2004)




Multi Layer Ceramic Capacitor: Why Fine Powder 2? downsizing




                        A
         C = ฮต 0ฮต r                          For high C in small volume
                        d                    nโ†‘, t โ†“ (1005โ†’ 0603 โ†’ 0402)
                                             the particle size โ†“
        C: Capacitance
        n: number of layer
                                             improvement in
        ฮต0 : permittivity in vacuum
                                             the dispersion technology
        ฮตr : dielectric constant
                                             improved cutting, aligning,
        A: area
        t: thickness                         electroding

Advanced Electronic Ceramics I (2004)
์‚ผ์„ฑ์ „๊ธฐ, ์„ธ๊ณ„ ์ตœ์†Œํ˜• MLCC ๊ฐœ๋ฐœ
์‚ผ์„ฑ์ „๊ธฐ๊ฐ€ ์„ธ๊ณ„์—์„œ ๊ฐ€์žฅ ์ž‘๊ณ  ๊ฐ€๋ฒผ์šด ์ ์ธต์„ธ๋ผ๋ฏน์ฝ˜๋ด์„œ(MLCC)๋ฅผ ๊ฐœ๋ฐœํ•˜๋Š”๋ฐ ์„ฑ๊ณตํ–ˆ๋‹ค. ์ด์— ๋”ฐ๋ผ
์‚ผ์„ฑ์ „๊ธฐ๋Š” MLCC ๊ธฐ์ˆ ๋ ฅ์—์„œ ์ผ๋ณธ์„ ์ฒ˜์Œ ์ถ”์›”ํ•œ ๊ฒƒ์€ ๋ฌผ๋ก  ์„ธ๊ณ„ 1์œ„ ํ’ˆ๋ชฉ์˜ ๊ฐ€๋Šฅ์„ฑ์„ ํ•œ์ธต ์ œ๊ณ ํ•œ ๊ฒƒ์œผ๋กœ
ํ‰๊ฐ€๋œ๋‹ค. ์‚ผ์„ฑ์ „๊ธฐ(๋Œ€ํ‘œ ๊ฐ•ํ˜ธ๋ฌธ)๋Š” ๋จธ๋ฆฌ์นด๋ฝ ๊ตต๊ธฐ์™€ ํฌ๊ธฐ๊ฐ€ ๋น„์Šทํ•ด ๋ˆˆ์œผ๋กœ ํ˜•์ƒ์ด
๊ตฌ๋ถ„๋˜์ง€ ์•Š์„ ์ •๋„๋กœ ๊ทน์†Œํ˜•์ด๊ณ  ๋ฌด๊ฒŒ๋„ 90ใŽ์œผ๋กœ ์ดˆ๊ฒฝ๋Ÿ‰์ธ โ€˜0402(0.4X0.2mm) MLCCโ€™๋ฅผ
์ผ๋ณธ ๋ฌด๋ผํƒ€๋ณด๋‹ค ํ•œ ๋ฐœ ์•ž์„œ ๊ฐœ๋ฐœ, ๋‚ด๋…„ ์ƒ๋ฐ˜๊ธฐ์ค‘ ์–‘์‚ฐ์— ๋“ค์–ด๊ฐ„๋‹ค๊ณ  18์ผ ๋ฐํ˜”๋‹ค.

0402 MLCC๋Š” ๊ธฐ์กด ์ตœ์†Œํ˜• ์ œํ’ˆ์ธ 0603 MLCC์— ๋น„ํ•ด ๋ถ€ํ”ผ๊ฐ€ 3๋ถ„์˜ 1 ์ดํ•˜์ด๋ฉฐ ํ˜„์žฌ ๊ฐ€์žฅ
๋งŽ์ด ์‚ฌ์šฉ์ค‘์ธ 1005 MLCC์— ๋น„ํ•ด ๊ทธ ๋ถ€ํ”ผ๊ฐ€ 15๋ถ„์˜ 1์— ๋ถˆ๊ณผํ•œ ์ดˆ์†Œํ˜• ์ œํ’ˆ์œผ๋กœ ํœด๋Œ€์šฉ
์ „์ž๊ธฐ๊ธฐ ์ดˆ์†Œํ˜•ํ™”์— ํŒŒ๊ธ‰ ํšจ๊ณผ๊ฐ€ ์ปค ํ–ฅํ›„ ๊ทธ ์ˆ˜์š”๊ฐ€ ๊ธฐํ•˜๊ธ‰์ˆ˜์ ์œผ๋กœ ์ฆ๊ฐ€ํ•  ๊ฒƒ์œผ๋กœ ์˜ˆ์ƒ๋˜๋Š”
์ œํ’ˆ์ด๋‹ค. ๋˜ 0402 MLCC๋Š” ์†Œ์ฃผ ํ•œ ์ž” ๋ถ„๋Ÿ‰์˜ ๊ฐ€๊ฒฉ์ด 1500๋งŒ์› ์ด์ƒ์— ๋‹ฌํ•ด ๊ธˆ๋ณด๋‹ค ๋น„์‹ผ ๊ณ ๋ถ€๊ฐ€ ์ œํ’ˆ์ด๋‹ค.
์‚ผ์„ฑ์ „๊ธฐ๋Š” ยฑ2ใŽ› ์ˆ˜์ค€์˜ ์ดˆ์ •๋ฐ€ ๋‚ด๋ถ€์ „๊ทน ์ธ์‡„๊ธฐ์ˆ ๊ณผ ์™ธ๋ถ€์ „๊ทน ํญ์„ 100ใŽ› ๋ฏธ๋งŒ์œผ๋กœ ํ˜•์„ฑํ•˜๋Š” ์™ธ๋ถ€์ „๊ทน ๋„ํฌ
๊ธฐ์ˆ ์„ ๊ฐœ๋ฐœํ•˜๊ณ  ์นฉ์˜ ์ •ํ™•ํ•œ ํ˜•์ƒ์„ ์œ ์ง€ํ•˜๊ธฐ ์œ„ํ•ด ์••์ฐฉยท์ ˆ๋‹จยท์—ฐ๋งˆ ๊ณต์ •์— ์‹ ๊ณต๋ฒ•์„ ๋„์ž…ํ•จ์œผ๋กœ์จ ์ด๋ฒˆ์—
๊ทน์†Œํ˜• MLCC ๊ฐœ๋ฐœํ–ˆ๋‹ค๊ณ  ์„ค๋ช…ํ–ˆ๋‹ค.

์ด ํšŒ์‚ฌ ์ค‘์•™์—ฐ๊ตฌ์†Œ ๊น€์žฌ์กฐ ์ƒ๋ฌด๋Š” โ€œ์ด๋ฒˆ์— ์„ธ๊ณ„ ์ตœ์†Œํ˜• MLCC ๊ฐœ๋ฐœ์„ ์กฐ๊ธฐ์— ์™„๋ฃŒ, ์„ ์ง„์‚ฌ์™€ ๋™๋“ฑํ•œ ์ˆ˜์ค€์˜
๊ฒฝ์Ÿ์„ ํ•  ์ˆ˜ ์žˆ๋Š” ๊ธฐ๋ฐ˜์ด ๋งˆ๋ จ๋๋‹คโ€๋ฉฐ โ€œ์‚ผ์„ฑ์ „๊ธฐ๊ฐ€ ์„ ํ–‰ ์ œํ’ˆ ๊ฐœ๋ฐœ ์ฒด์žฌ์— ๋„์ž…ํ•œ ์ด๋ž˜ ์ฒ˜์Œ ์–ป๋Š” ์„ฑ๊ณผ๋ผ๋Š”
์ ์—์„œ ๊ทธ ์˜๋ฏธ๊ฐ€ ๋งค์šฐ ํฌ๋‹คโ€๊ณ  ๋งํ–ˆ๋‹ค. ์‚ผ์„ฑ์ „๊ธฐ๋Š” 2004๋…„ ํ•˜๋ฐ˜๊ธฐ ์ดํ›„ 0603 MLCC์™€ ๋”๋ถˆ์–ด 0402 MLCC๊ฐ€
์ดˆ์†Œํ˜• MLCC ์‹œ์žฅ์˜ ์ฃผ์ข…์„ ์ด๋ฃจ๊ณ  ๋‹จ์ผ ํ’ˆ๋ชฉ์œผ๋กœ 1์กฐ์› ์ด์ƒ์˜ ์‹œ์žฅ์„ ํ˜•์„ฑํ•  ๊ฒƒ์œผ๋กœ ์˜ˆ์ธก, ๋‚ด๋…„ ์ƒ๋ฐ˜๊ธฐ
์ค‘์— ์–‘์‚ฐ๊ฒ€์ฆ์„ ์™„๋ฃŒํ•œ ์ œํ’ˆ์„ ์ถœ์‹œํ•  ๊ณ„ํš์œผ๋กœ ์•Œ๋ ค์กŒ๋‹ค. ๋˜ ์ด ํšŒ์‚ฌ๋Š” MLCC๋ฅผ 2007๋…„๊นŒ์ง€ ์„ธ๊ณ„1์œ„
ํ’ˆ๋ชฉ์œผ๋กœ ์œก์„ฑํ•˜๊ธฐ ์œ„ํ•ด ํ•ต์‹ฌ ์›๋ฃŒ์ธ ์„ธ๋ผ๋ฏนํŒŒ์šฐ๋”์˜ ์ผ๋ถ€ ๋ฌผ๋Ÿ‰์„ ์ž์ฒด ์ƒ์‚ฐํ•˜๋Š” ๊ฒƒ์€ ๋ฌผ๋ก  ํ’ˆ์งˆ ๋ฐ ํ”„๋กœ์„ธ์Šค
๊ฐœ์„ ์„ ํ†ตํ•œ ์›๊ฐ€์ ˆ๊ฐ ํ™œ๋™๊ณผ ๊ณ ์šฉ๋Ÿ‰ ์ œํ’ˆ์˜ ๋งค์ถœ๋น„์ค‘ ํ™•๋Œ€๋ฅผ ํ†ตํ•ด ์ œํ’ˆ ๊ฒฝ์Ÿ๋ ฅ์„ ๊ฐ•ํ™”ํ•œ๋‹ค.

์‚ผ์„ฑ์ „๊ธฐ ๊น€์ข…ํฌ ์ƒ๋ฌด๋Š” โ€œ0603 MLCC๋ฅผ ์ผ๋ณธ ๋ฌด๋ผํƒ€๋ณด๋‹ค 2๋…„ ๋Šฆ๊ฒŒ ๊ฐœ๋ฐœ, ๊ทธ๋™์•ˆ ์ผ๋ณธ์„ ๋’ค์ข‡์•„ ๊ฐ€๋Š”
์‹์ด์—ˆ์œผ๋‚˜ ์ด๋ฒˆ์— 0402 ์ œํ’ˆ์„ ์ˆ˜๊ฐœ์›” ๋จผ์ € ๊ฐœ๋ฐœ, ์ฒ˜์Œ ์ถ”์›”ํ•œ ๊ฒƒ์œผ๋กœ ํŒŒ์•…๋œ๋‹คโ€๋ฉฐ โ€œ์ด๋ฒˆ ๊ฐœ๋ฐœ ์„ฑ๊ณต์œผ๋กœ
์„ธํŠธ์—…์ฒด๋ฅผ ์ด๋Œ ์ˆ˜ ์žˆ๊ฒŒ ๋๋‹คโ€๊ณ  ๋งํ–ˆ๋‹ค. ๋‹จ์œ„๋ฉด์ ๋‹น(cm2) ์‹ค์žฅ๋˜๋Š” MLCC ์ˆ˜๋Š” ๋ชจ๋ฐ”์ผ๊ธฐ๊ธฐ์˜ ๊ธฐ์ˆ ๋ฐœ์ „์œผ๋กœ
2001๋…„ ์•ฝ 40๊ฐœ์—์„œ ํ˜„์žฌ ์•ฝ 50๊ฐœ, 2005๋…„์—๋Š” 60๊ฐœ๋กœ ์˜ˆ์ธก๋˜๋ฉฐ ์ด๋ฅผ ์œ„ํ•ด ๋ถ€ํ’ˆ์˜ ์ดˆ์†Œํ˜•ํ™”๊ฐ€ ์š”๊ตฌ๋œ๋‹ค.
[์ „์ž์‹ ๋ฌธ 2003๋…„ 9์›” 19์ผ์ž ๊ธฐ์‚ฌ]
Advanced Electronic Ceramics I (2004)




                                    Chip inductor




              - noise suppression for high frequency
              - possible to use at range above 100MHz
              - resonance circuits and impedance matching

              -small DC resistance and high Q factor are required

              (major applications)
              1. mobile communications
              2. computer

                             http://www.sem.samsung.co.kr/
Advanced Electronic Ceramics I (2004)
Chip resistor




       1. Small size
       2. No lead (surface-mount type) :
          Minimize lead inductance
       3. Trimmable

                             http://www.sem.samsung.co.kr/
Advanced Electronic Ceramics I (2004)




                               Multilayer chip varistor
                                                             VBR = nVg = DVg/d

                                                             small D
                                                             low VBR(<10V)

                                                             D: Thickness between electrode
                                                             Vg: macroscopic breakdown
                                                              voltage per intergranular barrier
                                                             d: grain size


                                                            handheld and portable sets
                                                            for mobile telecommunications




                                  A. Lagrange, Electronic Ceramics, Chapter 1, edited by B.C.H.Steele
Advanced Electronic Ceramics I (2004)
Multilayer chip varistor: Low breakdown operation




Advanced Electronic Ceramics I (2004)




               LTCC: Low Temperature Co-fired Ceramics
                        Low temperature sintering : ~ 850oC
                        Employ the Ag electrode




                http://www.murata.com/murata/murata.nsf/pages/multilayer/
Advanced Electronic Ceramics I (2004)
[2004 ์‹ ๋…„ํŠน์ง‘]์ „์ž์†Œ์žฌ์‹œ๋Œ€ ์—ด๋ฆฐ๋‹ค (์ „์ž์‹ ๋ฌธ 2004๋…„ 1์›” 1์ผ์ž)

  โ—† ์ƒˆ๋กœ์šด ๋ถ€ํ’ˆ ์ถœํ˜„ - ์‹ค์žฅ ๋ฉด์  ์ถ•์†Œ๊ฐ€ ๊ด€๊ฑด

  โ€˜๋‹จ๋ง๊ธฐ ๋ถ€ํ’ˆ์˜ ์‹ค์žฅ๋ฉด์ ์„ ์ค„์—ฌ๋ผโ€™ PDAยท๋””์ง€ํ„ธ์บ ์ฝ”๋”ยทํœด๋Œ€ํฐ ๋“ฑ ๋‹จ๋ง๊ธฐ๊ฐ€ ํ•˜๋‚˜๋กœ ํ†ตํ•ฉ(All-in-One Terminal)๋˜๋ฉด์„œ
  ๋‹จ๋ง๊ธฐ ๋ถ€ํ’ˆ๋„ ๋ฉ๋‹ฌ์•„ ๋ณตํ•ฉํ™”ยท๊ณ ์ง‘์ ํ™” ํ˜„์ƒ์ชฝ์œผ๋กœ ๊ธ‰์ง„์ „ํ•˜๊ณ  ์žˆ๋‹ค. ๋‹จ๋ง๊ธฐ ๋ถ€ํ’ˆ์˜ ์ด๊ฐ™์€ ์ถ”์„ธ๋Š” ํœด๋Œ€ํฐ ๋“ฑ
  ๋‹จ๋ง๊ธฐ์˜ ๊ธฐ๋Šฅ์ด ๋‹ค์–‘ํ™”๋˜๊ณ  ํฌ๊ธฐ๊ฐ€ ์ž‘์•„์งˆ์ˆ˜๋ก ๋Š˜์–ด๋‚˜๋Š” ๋ถ€ํ’ˆ์ˆ˜๋ฅผ ์ตœ๋Œ€ํ•œ ์ค„์ด๋Š” ๊ฒƒ์€ ๋ฌผ๋ก  ๋ถ€ํ’ˆ ์‹ค์žฅ ๋ฉด์ ์„
  ์ค„์ด๋Š” ๊ฒƒ์ด ์„ ๊ฒฐ ๊ณผ์ œ์ด๊ธฐ ๋•Œ๋ฌธ์ด๋‹ค. ์ด์— ๋”ฐ๋ผ ์‚ผ์„ฑ์ „๊ธฐยทLG์ด๋…ธํ… ๋“ฑ ์—…์ฒด๋“ค์€ ์•ˆํ…Œ๋‚˜์Šค์œ„์นญ๋ชจ๋“ˆ(ASM)๊ณผ
  SAW(ํ‘œ๋ฉดํƒ„์„ฑํŒŒ)ํ•„ํ„ฐ๋ฅผ ๊ฒฐํ•ฉํ•œ โ€˜ํ”„๋ŸฐํŠธ ์—”๋“œ ๋ชจ๋“ˆ(FEM) ๋“ฑ ์ƒˆ๋กœ์šด ํ˜•ํƒœ์˜ ์ฐจ๊ธฐ ๋ณตํ•ฉ ๋ถ€ํ’ˆ์„ ์ž‡๋”ฐ๋ผ ์„ ๋ณด์ด๊ฑฐ๋‚˜
  ๊ฐœ๋ฐœ์ค‘์— ์žˆ๋‹ค. FEM์€ ํœด๋Œ€ํฐ ์†ก์ˆ˜์‹  ์‹ ํ˜ธ๋ฅผ ๋ถ„๋ฆฌ์‹œ์ผœ์ฃผ๊ณ  ์—ฌ๋Ÿฌ ์ฃผํŒŒ์ˆ˜ ์ค‘ ํ•„์š”ํ•œ ์ฃผํŒŒ์ˆ˜๋งŒ์„ ์„ ํƒํ•ด
  ํ†ต๊ณผ์‹œ์ผœ์ฃผ๋Š” ๋‹ค๊ธฐ๋Šฅ ํ•ต์‹ฌ ๋ถ€ํ’ˆ์ด๋‹ค. ์ง€๋‚œํ•ด๊นŒ์ง€๋Š” ๋“€ํ”Œ๋ ‰์Šคยท์Šค์œ„์นญํšŒ๋กœ ๋“ฑ์˜ ๋ถ€ํ’ˆ์„ ํ•˜๋‚˜๋กœ ํ•ฉ์นœ
  ์•ˆํ…Œ๋‚˜์Šค์œ„์นญ๋ชจ๋“ˆ(ASM)์ด ์ฃผ๋ชฉ๋ฐ›์•˜๋‹ค. ๊ทธ๋Ÿฌ๋‚˜ ๋‹จ๋ง๊ธฐ๊ฐ€ ๋‹ค๊ธฐ๋Šฅํ™”๋˜๊ณ  ์ž‘์•„์ง€๋ฉด์„œ 1๋…„๋งŒ์— ASM์— SAWํ•„ํ„ฐ์„
  ์ถ”๊ฐ€ํ•œ ์ƒˆ๋กœ์šด ๋ณตํ•ฉ ๋ถ€ํ’ˆ์ธ FEM์ด ๋“ฑ์žฅํ•œ ๊ฒƒ. ๋˜ ์•ˆํ…Œ๋‚˜์Šค์œ„์น˜๋ชจ๋“ˆ(ASM)ยทPAMยทSAW ๋“€ํ”Œ๋ ‰์„œ ๋“ฑ 3๊ฐ€์ง€ ๋ชจ๋“ˆ์„
  ํ•ฉ์นœ ์ฐจ์„ธ๋Œ€ ๋ณตํ•ฉ ๋ชจ๋“ˆ ๊ฐœ๋ฐœ ์—ด๊ธฐ๋„ ๋œจ๊ฑฐ์›Œ์ง€๊ณ  ์žˆ์–ด ๋‹จ์ผ ๊ธฐ๋Šฅ์˜ ๋ชจ๋“ˆ ๋‚ด์ง€๋Š” VCO ๋“ฑ ๋ถ€ํ’ˆ๋“ค์€ ์ƒˆ๋กœ์šด ๋ณตํ•ฉ ๋ชจ๋“ˆ์—
  ์ž๋ฆฌ๋ฅผ ๋‚ด์ฃผ๊ณ  ์‹œ์žฅ์—์„œ ์„œ์„œํžˆ ์‚ฌ๋ผ์ง€๊ณ  ์žˆ๋‹ค.

  ๊ณ ์ง‘์ ํ™”๋„ ํ™œ๋ฐœํžˆ ์ด๋ค„์ง€๊ณ  ์žˆ๋‹ค. ์‹ค์žฅ ๋ฉด์ ์„ ์ค„์ด๊ณ ์ž ์นฉ์‚ฌ์ด์ฆˆํŒจํ‚ค์ง• ๊ธฐ์ˆ ์„ ์ด์šฉํ•ด CDMA์šฉ SAW
  ๋“€ํ”Œ๋ ‰์„œ์™€ FEM ํฌ๊ธฐ๊ฐ€ ์ ์  ์ž‘์•„์ง€๋ฉด์„œ ์žฅ๊ธฐ์ ์œผ๋กœ RF ๋ฉค์Šค(MEMS) ๊ธฐ์ˆ ์„ ์ด์šฉํ•ด ๋ชจ๋“  ๋ชจ๋“ˆยท๋ถ€ํ’ˆ์„ ์›์นฉ(One
  Chip)์— ์ง‘์ ์‹œํ‚ค๋Š” ์—ฐ๊ตฌ๊ฐ€ ์ด๋ค„์ง€๊ณ  ์žˆ๋‹ค. ๊ฒŒ๋‹ค๊ฐ€ ๋™์˜์ƒยท์œ„์น˜์ •๋ณด ๋“ฑ ๋ฉ€ํ‹ฐ๋ฏธ๋””์–ด ๋ถ€๊ฐ€๊ธฐ๋Šฅ์ด ์ถ”๊ฐ€๋˜๋ฉด์„œ
  ์ ์ธต์„ธ๋ผ๋ฏน์ฝ˜๋ด์„œ (MLCC) ์ˆ˜์š”๊ฐ€ ์ฆ๊ฐ€๋จ์— ๋”ฐ๋ผ 0603 MLCC ์‹œ์žฅ๋„ ๋น ๋ฅด๊ฒŒ ํ˜•์„ฑ๋  ๊ฒƒ์œผ๋กœ ์ „๋ง๋œ๋‹ค.

  ์ด์™€ ํ•จ๊ป˜ ์นฉ์„ธํŠธ์™€ ํšŒ๋กœ์„ค๊ณ„์˜ ๋ฐœ์ „์œผ๋กœ ์ฝ˜๋ด์„œยท์ €ํ•ญยท์ธ๋•ํŠธ ๋“ฑ 3๋Œ€ ์ˆ˜๋™ ๋ถ€ํ’ˆ๋“ค์ด ๊ธฐํŒ์— ์‹ค์žฅ๋˜๋Š” ๊ฒŒ ์•„๋‹ˆ๋ผ
  ์•„์˜ˆ ๋‚ด์žฅ๋˜๋Š” ์ชฝ์œผ๋กœ ๊ธฐ์ˆ  ๊ฐœ๋ฐœ์ด ํ™œ๋ฐœํžˆ ์ด๋ค„์ง€๊ณ  ์žˆ๋‹ค.

  ์‚ผ์„ฑ์ „๊ธฐ ๊ฐ•์„์ฒ  ๊ทธ๋ฃน์žฅ์€ โ€œ๋‹จ๋ง๊ธฐ์˜ ๊ณ ๊ธฐ๋Šฅํ™”๋Š” ๋ถ€ํ’ˆ์˜ ์ดˆ์†Œํ˜•ํ™”์™€ ๊ณ ์ง‘์ ํ™”๋ฅผ ์š”๊ตฌํ•˜๋Š” ํ•œํŽธ
  ์˜ํ•„ํ„ฐยท๋””ํ”Œ๋ ‰์„œยท์Šคํ”Œ๋ฆฌํ„ฐ ๋“ฑ์˜ ๋ถ€ํ’ˆ ์‚ฌ์šฉ์ˆ˜๋ฅผ ์ค„์ด๊ฑฐ๋‚˜ ๊ทธ ๊ธฐ๋Šฅ์„ ๋ณตํ•ฉ ๋ชจ๋“ˆ์ด ๋Œ€์ฒดํ•˜๋Š” ์ชฝ์œผ๋กœ ๋ถ€ํ’ˆ ์‹œ์žฅ์„
  ๋ณ€ํ™”์‹œํ‚ค๊ณ  ์žˆ๋‹คโ€๊ณ  ๋ฐํ˜”๋‹ค.

Advanced Electronic Ceramics I (2004)




     LTCC(Low Temperature Cofired Ceramic)
        ์‚ผ์„ฑ์ „๊ธฐ, ์ดˆ์†Œํ˜• ๋ณตํ•ฉ๊ธฐ๋Šฅ
        ํœด๋Œ€ํฐ๋ถ€ํ’ˆ FEM ๊ตญ๋‚ด ์ฒซ ๊ฐœ๋ฐœ
        ๊ฒŒ์žฌ: 2001๋…„ 05์›” 24์ผ (์ „์ž์—”์ง€๋‹ˆ์–ด)

       ์‚ผ์„ฑ์ „๊ธฐ๊ฐ€ ์œ ๋Ÿฝํ–ฅ ๋“€์–ผ ํœด๋Œ€ํฐ์— ์‚ฌ์šฉ๋˜๋Š” ํ•ต์‹ฌ๋ถ€ํ’ˆ FEM(Front End Module)์„
    ๊ฐœ๋ฐœํ–ˆ๋‹ค. ๊ฐ€๋กœ(8.4mm) X ์„ธ๋กœ(5.0mm) X ๋†’์ด(1.9mm)์˜ ํฌ๊ธฐ๋กœ 7๊ฐœ์˜ ๋‚ฑ๊ฐœ ๋ถ€ํ’ˆ์„ ์‚ฌ์šฉํ• 
    ๋•Œ๋ณด๋‹ค ๋ถ€ํ”ผ๋ฅผ 80ํผ์„ผํŠธ ์ค„์—ฌ์ฃผ๋Š” FEM์€ ํœด๋Œ€ํฐ์— ์‚ฌ์šฉ๋˜์–ด ์†ก์‹ ๊ณผ ์ˆ˜์‹ ์‹ ํ˜ธ๋ฅผ ๋ถ„๋ฆฌ์‹œ์ผœ
    ์ฃผ๋ฉฐ, ์—ฌ๋Ÿฌ ์ฃผํŒŒ์ˆ˜ ์ค‘ ํ•„์š”ํ•œ ์ฃผํŒŒ์ˆ˜๋งŒ์„ ์„ ํƒํ•ด ํ†ต๊ณผ์‹œ์ผœ์ฃผ๋Š” ์—ญํ• ์„ ๋‹ด๋‹นํ•˜๋Š” ๋‹ค๊ธฐ๋Šฅ
    ๋ถ€ํ’ˆ์ด๋‹ค. ์ด ๋ถ€ํ’ˆ์€ ๊ธฐ์กด ๋ถ€ํ’ˆ๋ณด๋‹ค ๊ฐ€๊ฒฉ๋ฉด์—์„œ 25ํผ์„ผํŠธ ์ €๋ ดํ•˜๋‹ค.
       ์‚ผ์„ฑ์ „๊ธฐ ์ธก์€ ์ด ์ œํ’ˆ์˜ ๊ฐœ๋ฐœ์„ ์œ„ํ•ด 1mm ๋†’์ด์˜ LTCC(์ €์˜จ ์†Œ์„ฑ ์„ธ๋ผ๋ฏน)๊ธฐํŒ์— ์ ์ธต
    ์„ค๊ณ„ ๊ธฐ๋ฒ•์„ ์‚ฌ์šฉํ•˜์—ฌ 13์ธต์˜ ํšŒ๋กœ๋ฅผ ๊ตฌํ˜„ํ–ˆ์œผ๋ฉฐ, SAW ํ•„ํ„ฐ๋ฅผ ๋‚ด์žฅ์‹œ์ผœ ๊ณ ์ฃผํŒŒ ํšŒ๋กœ์—์„œ
    ์ €ํ•ญ์„ ์ตœ์†Œํ™”ํ•˜๋Š”๋ฐ ์„ฑ๊ณตํ–ˆ๋‹ค๊ณ  ์ „ํ–ˆ๋‹ค. ์ผ๋ณธ์˜ ํžˆํƒ€์น˜ ์™ธ์— ๋‹ค๋ฅธ ์—…์ฒด๋“ค์ด ๋ชจ๋‘ ๊ฐœ๋ฐœ ์ค‘์—
    ์žˆ๋Š” FEM์€ ํžˆํƒ€์น˜ ์ œํ’ˆ์— ๋น„ํ•ด ํฌ๊ธฐ๊ฐ€ ์ž‘์•„ ํฐ ํ˜ธ์‘์„ ์–ป์„ ์ˆ˜ ์žˆ์„ ๊ฒƒ์œผ๋กœ ๊ธฐ๋Œ€๋˜๊ณ  ์žˆ๋‹ค.
       ์˜ฌํ•ด ์„ธ๊ณ„ ํœด๋Œ€ํฐ ์‹œ์žฅ์˜ ์˜ˆ์ƒ ๊ทœ๋ชจ๊ฐ€ 5์–ต3์ฒœ๋งŒ ๋Œ€์ด๊ณ  ๊ทธ ์ค‘ 60ํผ์„ผํŠธ๊ฐ€ ์œ ๋Ÿฝํ–ฅ
    ํœด๋Œ€ํฐ์ด๋ฉฐ, ๊ทธ ๋Œ€๋ถ€๋ถ„์ด ๋“€์–ผํฐ์ž„์„ ๊ฐ์•ˆํ•  ๋•Œ FEM์˜ ์‹œ์žฅ๊ทœ๋ชจ๋Š” 4์–ต ๋‹ฌ๋Ÿฌ ์ด์ƒ์ด ๋ 
    ๊ฒƒ์œผ๋กœ ์˜ˆ์ƒ๋œ๋‹ค. ์‚ผ์„ฑ์ „๊ธฐ FEM์˜ ๋ณธ๊ฒฉ ์–‘์‚ฐ์€ ์˜ฌ 4์‚ฌ๋ถ„๊ธฐ์— ์‹œ์ž‘๋˜๋ฉฐ, ๊ตญ๋‚ด์—์„œ ์ตœ์ดˆ
    ์ƒ์‚ฐ๋˜์ง€๋งŒ ์ค‘๊ตญ ์‹œ์žฅ ๊ณต๋žต์„ ์œ„ํ•ด ํ…์ง„ ๊ณต์žฅ์—์„œ ๋Œ€๋Ÿ‰ ์ƒ์‚ฐ์„ ํ•  ๊ณ„ํš์ด๋‹ค.
       ์‚ผ์„ฑ์ „๊ธฐ๋Š” ์—ฐ๊ฐ„ 1์ฒœ๋งŒ ๋Œ€ ์ด์ƒ์˜ ์œ ๋Ÿฝํ–ฅ ํœด๋Œ€ํฐ์„ ์ƒ์‚ฐํ•˜๋Š” ๊ตญ๋‚ด ํœด๋Œ€ํฐ ์—…์ฒด๋“ค์—
    FEM์„ ๊ณต๊ธ‰ํ•ด 1์ฒœ๋งŒ๋ถˆ ์ด์ƒ์˜ ์ˆ˜์ž…๋Œ€์ฒด ํšจ๊ณผ๋ฅผ ๊ฑฐ๋‘˜ ๊ฒƒ์ด๋ฉฐ, ์•ž์œผ๋กœ ํ”Œ๋ฆฝ์นฉ SAW ํ•„ํ„ฐ๋ฅผ
    ์ ์šฉํ•œ 6.5 X 5.2 X 1.8mm์˜ ์ดˆ์†Œํ˜• ์ œํ’ˆ์„ ๊ฐœ๋ฐœ, US PCD ๋Œ€์—ญ๊นŒ์ง€ ์ปค๋ฒ„ํ•˜๋Š” ํŠธ๋ฆฌํ”Œ๋ชจ๋“œ
    ๋ณตํ•ฉ์ œํ’ˆ๋„ ๊ฐœ๋ฐœํ•  ๊ฒƒ์ด๋ผ๊ณ  ๋ฐํ˜”๋‹ค.

Advanced Electronic Ceramics I (2004)
Bluetooth




    What is Bluetooth? New communication standard for wireless connectivity.
    Why the name Bluetooth? Bluetooth was named after 10th Century Danish King
    Harold Bluetooth. King Harold was credited with uniting the provinces of
    Denmark under a single crown. Bluetooth technology is suppose to unite all
    different digital devices under a single standard of connection.

Advanced Electronic Ceramics I (2004)




                                                         Bluetooth
    Bluetooth is a global de facto
    standard for wireless
    connectivity. Based on a low-
    cost, short-range radio link,
    Bluetooth cuts the cords that         (Potential Applications)
    used to tie up digital devices.       โ™ฆ Laptop PC, PDA
                                          โ™ฆ Cordless Phone
    When two Bluetooth equipped
                                          โ™ฆ Cellular/Digital Handsets
    devices come within 10 meters
                                          โ™ฆ Wireless Headsets
    range of each other, they can
    establish a connection together.      โ™ฆ WLAN (Wireless Local Area Network)
    And because Bluetooth utilizes a         Cards
    radio-based link, it doesn't
                                          โ™ฆ Digital Camera
    require a line-of-sight connection
                                          โ™ฆ WAN Devices (Wide Area Networks)
    in order to communicate.
                                          โ™ฆ PAN Devices (Personal Area Networks)
                                          โ™ฆ Wireless Barcode Scanners
    Your laptop could send
    information to a printer in the       โ™ฆ Wireless PC Accessories
    next room, or your microwave            (Printers, Mouse, keyboard, etc)
    could send a message to your
    mobile phone telling you that
    your meal is ready.
           From www.nokia.com
Advanced Electronic Ceramics I (2004)
SOFC(Solid Oxide Fuel Cell)
                                                    High ratio of energy conversion (~60%)
                                                    Power-generation module
                                                    (Breakthrough) Preparation of
                                                     Defect-free & wide-area 8YSZ sheet



    Anode supported cell
    from the brochure of InDEC B.V.




    Expanded view of SOFC
    from http://www.spice.or.jp/~fisher/sofc.html


Advanced Electronic Ceramics I (2004)




         Powder                             Powder
         Preparation                        Characterization
                                                                   Dispersion of
                                                                   Powder


                                                                           Slurry
                                                                           Formulation

                      Applications                                 Tape Casting
                      - MLCC
                                                    Electroding
                      - LTCC
                                                    Lamination
                      - Chip R, L, C
                      - SOFC


Advanced Electronic Ceramics I (2004)

More Related Content

What's hot

The International Journal of Engineering and Science
The International Journal of Engineering and ScienceThe International Journal of Engineering and Science
The International Journal of Engineering and Sciencetheijes
ย 
Optical studies of nano structured la-doped zn o prepared by combustion method
Optical studies of nano structured la-doped zn o prepared by combustion methodOptical studies of nano structured la-doped zn o prepared by combustion method
Optical studies of nano structured la-doped zn o prepared by combustion methodsuresh800
ย 
Effect of Annealing on the Structural and Optical Properties of Nanostr...
Effect of Annealing on the Structural and       Optical Properties of Nanostr...Effect of Annealing on the Structural and       Optical Properties of Nanostr...
Effect of Annealing on the Structural and Optical Properties of Nanostr...sarmad
ย 
Synthesis Of Nanostructured TiO2 Thin Films By Pulsed Laser Deposition (PLD) ...
Synthesis Of Nanostructured TiO2 Thin Films By Pulsed Laser Deposition (PLD) ...Synthesis Of Nanostructured TiO2 Thin Films By Pulsed Laser Deposition (PLD) ...
Synthesis Of Nanostructured TiO2 Thin Films By Pulsed Laser Deposition (PLD) ...sarmad
ย 
Synthesis and characterisation of k doped zno 1
Synthesis and characterisation of k doped zno 1Synthesis and characterisation of k doped zno 1
Synthesis and characterisation of k doped zno 1Jeslin Mattam
ย 
Preparation, Structure, and Characterization of Nd2mo2o9 fast Oxide Ion Condu...
Preparation, Structure, and Characterization of Nd2mo2o9 fast Oxide Ion Condu...Preparation, Structure, and Characterization of Nd2mo2o9 fast Oxide Ion Condu...
Preparation, Structure, and Characterization of Nd2mo2o9 fast Oxide Ion Condu...IJARIIT
ย 
Synthesis of Bismuth Ferrite nano particles by sol-gel method and their chara...
Synthesis of Bismuth Ferrite nano particles by sol-gel method and their chara...Synthesis of Bismuth Ferrite nano particles by sol-gel method and their chara...
Synthesis of Bismuth Ferrite nano particles by sol-gel method and their chara...IOSR Journals
ย 
Grds conferences icst and icbelsh (6)
Grds conferences icst and icbelsh (6)Grds conferences icst and icbelsh (6)
Grds conferences icst and icbelsh (6)Global R & D Services
ย 
SRP REPORT PPT-final
SRP REPORT PPT-finalSRP REPORT PPT-final
SRP REPORT PPT-finalAbubakar Sadique
ย 
Study of Annealing Effect on the Some Physical Properties of Nanostructured T...
Study of Annealing Effect on the Some Physical Properties of Nanostructured T...Study of Annealing Effect on the Some Physical Properties of Nanostructured T...
Study of Annealing Effect on the Some Physical Properties of Nanostructured T...sarmad
ย 
Synthesis, characterization and electrocatalytic activity of silver nanorods ...
Synthesis, characterization and electrocatalytic activity of silver nanorods ...Synthesis, characterization and electrocatalytic activity of silver nanorods ...
Synthesis, characterization and electrocatalytic activity of silver nanorods ...kutty79
ย 
Optimization of Coal Blending to Reduce Production Cost and Increase Energy E...
Optimization of Coal Blending to Reduce Production Cost and Increase Energy E...Optimization of Coal Blending to Reduce Production Cost and Increase Energy E...
Optimization of Coal Blending to Reduce Production Cost and Increase Energy E...inventionjournals
ย 
Development of Ni-doped Yttria stabilized Zirconia composite for SOFC applica...
Development of Ni-doped Yttria stabilized Zirconia composite for SOFC applica...Development of Ni-doped Yttria stabilized Zirconia composite for SOFC applica...
Development of Ni-doped Yttria stabilized Zirconia composite for SOFC applica...IOSRJAP
ย 

What's hot (18)

The International Journal of Engineering and Science
The International Journal of Engineering and ScienceThe International Journal of Engineering and Science
The International Journal of Engineering and Science
ย 
Optical studies of nano structured la-doped zn o prepared by combustion method
Optical studies of nano structured la-doped zn o prepared by combustion methodOptical studies of nano structured la-doped zn o prepared by combustion method
Optical studies of nano structured la-doped zn o prepared by combustion method
ย 
10.1007_s11082-014-9975-2
10.1007_s11082-014-9975-210.1007_s11082-014-9975-2
10.1007_s11082-014-9975-2
ย 
Effect of Annealing on the Structural and Optical Properties of Nanostr...
Effect of Annealing on the Structural and       Optical Properties of Nanostr...Effect of Annealing on the Structural and       Optical Properties of Nanostr...
Effect of Annealing on the Structural and Optical Properties of Nanostr...
ย 
Synthesis Of Nanostructured TiO2 Thin Films By Pulsed Laser Deposition (PLD) ...
Synthesis Of Nanostructured TiO2 Thin Films By Pulsed Laser Deposition (PLD) ...Synthesis Of Nanostructured TiO2 Thin Films By Pulsed Laser Deposition (PLD) ...
Synthesis Of Nanostructured TiO2 Thin Films By Pulsed Laser Deposition (PLD) ...
ย 
Synthesis and characterisation of k doped zno 1
Synthesis and characterisation of k doped zno 1Synthesis and characterisation of k doped zno 1
Synthesis and characterisation of k doped zno 1
ย 
Aem Lect15
Aem Lect15Aem Lect15
Aem Lect15
ย 
Graphene
GrapheneGraphene
Graphene
ย 
Preparation, Structure, and Characterization of Nd2mo2o9 fast Oxide Ion Condu...
Preparation, Structure, and Characterization of Nd2mo2o9 fast Oxide Ion Condu...Preparation, Structure, and Characterization of Nd2mo2o9 fast Oxide Ion Condu...
Preparation, Structure, and Characterization of Nd2mo2o9 fast Oxide Ion Condu...
ย 
Synthesis of Bismuth Ferrite nano particles by sol-gel method and their chara...
Synthesis of Bismuth Ferrite nano particles by sol-gel method and their chara...Synthesis of Bismuth Ferrite nano particles by sol-gel method and their chara...
Synthesis of Bismuth Ferrite nano particles by sol-gel method and their chara...
ย 
Aem Lect17
Aem Lect17Aem Lect17
Aem Lect17
ย 
Rani
RaniRani
Rani
ย 
Grds conferences icst and icbelsh (6)
Grds conferences icst and icbelsh (6)Grds conferences icst and icbelsh (6)
Grds conferences icst and icbelsh (6)
ย 
SRP REPORT PPT-final
SRP REPORT PPT-finalSRP REPORT PPT-final
SRP REPORT PPT-final
ย 
Study of Annealing Effect on the Some Physical Properties of Nanostructured T...
Study of Annealing Effect on the Some Physical Properties of Nanostructured T...Study of Annealing Effect on the Some Physical Properties of Nanostructured T...
Study of Annealing Effect on the Some Physical Properties of Nanostructured T...
ย 
Synthesis, characterization and electrocatalytic activity of silver nanorods ...
Synthesis, characterization and electrocatalytic activity of silver nanorods ...Synthesis, characterization and electrocatalytic activity of silver nanorods ...
Synthesis, characterization and electrocatalytic activity of silver nanorods ...
ย 
Optimization of Coal Blending to Reduce Production Cost and Increase Energy E...
Optimization of Coal Blending to Reduce Production Cost and Increase Energy E...Optimization of Coal Blending to Reduce Production Cost and Increase Energy E...
Optimization of Coal Blending to Reduce Production Cost and Increase Energy E...
ย 
Development of Ni-doped Yttria stabilized Zirconia composite for SOFC applica...
Development of Ni-doped Yttria stabilized Zirconia composite for SOFC applica...Development of Ni-doped Yttria stabilized Zirconia composite for SOFC applica...
Development of Ni-doped Yttria stabilized Zirconia composite for SOFC applica...
ย 

Viewers also liked

Premierea concursului- Vizita virtuala
Premierea concursului- Vizita virtualaPremierea concursului- Vizita virtuala
Premierea concursului- Vizita virtualaiscroni
ย 
Designing the Obvious
Designing the ObviousDesigning the Obvious
Designing the ObviousRobert Hoekman, Jr
ย 
EucaristรญA Corpus Christi
EucaristรญA Corpus ChristiEucaristรญA Corpus Christi
EucaristรญA Corpus Christicristiandadypatria
ย 
Activitati 2006-2007
Activitati 2006-2007Activitati 2006-2007
Activitati 2006-2007iscroni
ย 
"Pe urmele istoriei"
"Pe urmele istoriei""Pe urmele istoriei"
"Pe urmele istoriei"iscroni
ย 
Most popular pics
Most popular picsMost popular pics
Most popular picscomoburro
ย 
Ice rain
Ice rainIce rain
Ice raincomoburro
ย 
Xiยดan
XiยดanXiยดan
XiยดanNikkitta M
ย 

Viewers also liked (8)

Premierea concursului- Vizita virtuala
Premierea concursului- Vizita virtualaPremierea concursului- Vizita virtuala
Premierea concursului- Vizita virtuala
ย 
Designing the Obvious
Designing the ObviousDesigning the Obvious
Designing the Obvious
ย 
EucaristรญA Corpus Christi
EucaristรญA Corpus ChristiEucaristรญA Corpus Christi
EucaristรญA Corpus Christi
ย 
Activitati 2006-2007
Activitati 2006-2007Activitati 2006-2007
Activitati 2006-2007
ย 
"Pe urmele istoriei"
"Pe urmele istoriei""Pe urmele istoriei"
"Pe urmele istoriei"
ย 
Most popular pics
Most popular picsMost popular pics
Most popular pics
ย 
Ice rain
Ice rainIce rain
Ice rain
ย 
Xiยดan
XiยดanXiยดan
Xiยดan
ย 

Similar to Aem Lect1

Reduction of dielectric constant of ltcc
Reduction of dielectric constant of ltcc Reduction of dielectric constant of ltcc
Reduction of dielectric constant of ltcc Beata Synkiewicz
ย 
EPD Resin Clay Composite
EPD Resin Clay CompositeEPD Resin Clay Composite
EPD Resin Clay Compositelinkerlate
ย 
Dye sensitized solar cells
Dye sensitized solar cellsDye sensitized solar cells
Dye sensitized solar cellssaromemarzadeh
ย 
M.S.ThesisDefense
M.S.ThesisDefenseM.S.ThesisDefense
M.S.ThesisDefenseNicole Pacheco
ย 
Fp2510301035
Fp2510301035Fp2510301035
Fp2510301035IJERA Editor
ย 
Bg32788792
Bg32788792Bg32788792
Bg32788792IJMER
ย 
Manufacturing of micro-lens_array_using_contactles
Manufacturing of micro-lens_array_using_contactlesManufacturing of micro-lens_array_using_contactles
Manufacturing of micro-lens_array_using_contactlesEdna Melo Uscanga
ย 
PhD_Thesis_Radu_Andrei_Negrila_EMF_stirring_final
PhD_Thesis_Radu_Andrei_Negrila_EMF_stirring_finalPhD_Thesis_Radu_Andrei_Negrila_EMF_stirring_final
PhD_Thesis_Radu_Andrei_Negrila_EMF_stirring_finalRadu Andrei Negrila
ย 
Fundamentals, synthesis and applications of Al2O3-ZrO2 composites
Fundamentals, synthesis and applications of Al2O3-ZrO2 compositesFundamentals, synthesis and applications of Al2O3-ZrO2 composites
Fundamentals, synthesis and applications of Al2O3-ZrO2 compositesTANDRA MOHANTA
ย 
NANO FINISHING TECHNIQUES
NANO FINISHING TECHNIQUESNANO FINISHING TECHNIQUES
NANO FINISHING TECHNIQUESARIJEET MOHAPATRA
ย 
Nanomaterials synthesis by Yogesh T N 22ECR246.pptx
Nanomaterials synthesis by Yogesh T N 22ECR246.pptxNanomaterials synthesis by Yogesh T N 22ECR246.pptx
Nanomaterials synthesis by Yogesh T N 22ECR246.pptxYOGESHTN22ECR246
ย 
Fabrication of patterned ferromagnetic shape memory thin films
Fabrication of patterned ferromagnetic shape memory thin filmsFabrication of patterned ferromagnetic shape memory thin films
Fabrication of patterned ferromagnetic shape memory thin filmsUniversidad de Oviedo
ย 
Nanotechnology and the Community - Nils Petersen
Nanotechnology and the Community - Nils PetersenNanotechnology and the Community - Nils Petersen
Nanotechnology and the Community - Nils PetersenCityRegionStudies
ย 
Nano composite and nano grain
Nano composite and nano grainNano composite and nano grain
Nano composite and nano grainJan Jose
ย 
Lithium Batteries and Supercapacitors
Lithium Batteries and SupercapacitorsLithium Batteries and Supercapacitors
Lithium Batteries and SupercapacitorsBing Hsieh
ย 

Similar to Aem Lect1 (20)

Reduction of dielectric constant of ltcc
Reduction of dielectric constant of ltcc Reduction of dielectric constant of ltcc
Reduction of dielectric constant of ltcc
ย 
Target Fabrication Capabilities
Target Fabrication CapabilitiesTarget Fabrication Capabilities
Target Fabrication Capabilities
ย 
EPD Resin Clay Composite
EPD Resin Clay CompositeEPD Resin Clay Composite
EPD Resin Clay Composite
ย 
Dye sensitized solar cells
Dye sensitized solar cellsDye sensitized solar cells
Dye sensitized solar cells
ย 
M.S.ThesisDefense
M.S.ThesisDefenseM.S.ThesisDefense
M.S.ThesisDefense
ย 
Fp2510301035
Fp2510301035Fp2510301035
Fp2510301035
ย 
Bg32788792
Bg32788792Bg32788792
Bg32788792
ย 
Manufacturing of micro-lens_array_using_contactles
Manufacturing of micro-lens_array_using_contactlesManufacturing of micro-lens_array_using_contactles
Manufacturing of micro-lens_array_using_contactles
ย 
ceramic sintering
ceramic sinteringceramic sintering
ceramic sintering
ย 
Nanofinishing
NanofinishingNanofinishing
Nanofinishing
ย 
PhD_Thesis_Radu_Andrei_Negrila_EMF_stirring_final
PhD_Thesis_Radu_Andrei_Negrila_EMF_stirring_finalPhD_Thesis_Radu_Andrei_Negrila_EMF_stirring_final
PhD_Thesis_Radu_Andrei_Negrila_EMF_stirring_final
ย 
Fundamentals, synthesis and applications of Al2O3-ZrO2 composites
Fundamentals, synthesis and applications of Al2O3-ZrO2 compositesFundamentals, synthesis and applications of Al2O3-ZrO2 composites
Fundamentals, synthesis and applications of Al2O3-ZrO2 composites
ย 
NANO FINISHING TECHNIQUES
NANO FINISHING TECHNIQUESNANO FINISHING TECHNIQUES
NANO FINISHING TECHNIQUES
ย 
Nano kolkata
Nano kolkataNano kolkata
Nano kolkata
ย 
Nanomaterials synthesis by Yogesh T N 22ECR246.pptx
Nanomaterials synthesis by Yogesh T N 22ECR246.pptxNanomaterials synthesis by Yogesh T N 22ECR246.pptx
Nanomaterials synthesis by Yogesh T N 22ECR246.pptx
ย 
Fabrication of patterned ferromagnetic shape memory thin films
Fabrication of patterned ferromagnetic shape memory thin filmsFabrication of patterned ferromagnetic shape memory thin films
Fabrication of patterned ferromagnetic shape memory thin films
ย 
Nanotechnology and the Community - Nils Petersen
Nanotechnology and the Community - Nils PetersenNanotechnology and the Community - Nils Petersen
Nanotechnology and the Community - Nils Petersen
ย 
Nano composite and nano grain
Nano composite and nano grainNano composite and nano grain
Nano composite and nano grain
ย 
Lithium Batteries and Supercapacitors
Lithium Batteries and SupercapacitorsLithium Batteries and Supercapacitors
Lithium Batteries and Supercapacitors
ย 
Transmission electron microscope
Transmission electron microscope   Transmission electron microscope
Transmission electron microscope
ย 

More from langtudaikieu

More from langtudaikieu (19)

Aem Lect14
Aem Lect14Aem Lect14
Aem Lect14
ย 
Aem Lect18
Aem Lect18Aem Lect18
Aem Lect18
ย 
Aem Lect6
Aem Lect6Aem Lect6
Aem Lect6
ย 
Aem Lect8
Aem Lect8Aem Lect8
Aem Lect8
ย 
Aem Lect10
Aem Lect10Aem Lect10
Aem Lect10
ย 
Aem Lect12
Aem Lect12Aem Lect12
Aem Lect12
ย 
Aem Lect13
Aem Lect13Aem Lect13
Aem Lect13
ย 
Aem Lect16
Aem Lect16Aem Lect16
Aem Lect16
ย 
Xrd 2005
Xrd 2005Xrd 2005
Xrd 2005
ย 
Thermal
ThermalThermal
Thermal
ย 
Tem
TemTem
Tem
ย 
Sem
SemSem
Sem
ย 
Saxs 2005
Saxs 2005Saxs 2005
Saxs 2005
ย 
Powder 2005
Powder 2005Powder 2005
Powder 2005
ย 
Oim 2005
Oim 2005Oim 2005
Oim 2005
ย 
Chem Analysis
Chem AnalysisChem Analysis
Chem Analysis
ย 
Dielectric
DielectricDielectric
Dielectric
ย 
Analyticalsem
AnalyticalsemAnalyticalsem
Analyticalsem
ย 
Afm 2005
Afm 2005Afm 2005
Afm 2005
ย 

Recently uploaded

MONA 98765-12871 CALL GIRLS IN LUDHIANA LUDHIANA CALL GIRL
MONA 98765-12871 CALL GIRLS IN LUDHIANA LUDHIANA CALL GIRLMONA 98765-12871 CALL GIRLS IN LUDHIANA LUDHIANA CALL GIRL
MONA 98765-12871 CALL GIRLS IN LUDHIANA LUDHIANA CALL GIRLSeo
ย 
Call Girls In Panjim North Goa 9971646499 Genuine Service
Call Girls In Panjim North Goa 9971646499 Genuine ServiceCall Girls In Panjim North Goa 9971646499 Genuine Service
Call Girls In Panjim North Goa 9971646499 Genuine Serviceritikaroy0888
ย 
Lucknow ๐Ÿ’‹ Escorts in Lucknow - 450+ Call Girl Cash Payment 8923113531 Neha Th...
Lucknow ๐Ÿ’‹ Escorts in Lucknow - 450+ Call Girl Cash Payment 8923113531 Neha Th...Lucknow ๐Ÿ’‹ Escorts in Lucknow - 450+ Call Girl Cash Payment 8923113531 Neha Th...
Lucknow ๐Ÿ’‹ Escorts in Lucknow - 450+ Call Girl Cash Payment 8923113531 Neha Th...anilsa9823
ย 
Unlocking the Secrets of Affiliate Marketing.pdf
Unlocking the Secrets of Affiliate Marketing.pdfUnlocking the Secrets of Affiliate Marketing.pdf
Unlocking the Secrets of Affiliate Marketing.pdfOnline Income Engine
ย 
Cash Payment 9602870969 Escort Service in Udaipur Call Girls
Cash Payment 9602870969 Escort Service in Udaipur Call GirlsCash Payment 9602870969 Escort Service in Udaipur Call Girls
Cash Payment 9602870969 Escort Service in Udaipur Call GirlsApsara Of India
ย 
Enhancing and Restoring Safety & Quality Cultures - Dave Litwiller - May 2024...
Enhancing and Restoring Safety & Quality Cultures - Dave Litwiller - May 2024...Enhancing and Restoring Safety & Quality Cultures - Dave Litwiller - May 2024...
Enhancing and Restoring Safety & Quality Cultures - Dave Litwiller - May 2024...Dave Litwiller
ย 
Mysore Call Girls 8617370543 WhatsApp Number 24x7 Best Services
Mysore Call Girls 8617370543 WhatsApp Number 24x7 Best ServicesMysore Call Girls 8617370543 WhatsApp Number 24x7 Best Services
Mysore Call Girls 8617370543 WhatsApp Number 24x7 Best ServicesDipal Arora
ย 
Tech Startup Growth Hacking 101 - Basics on Growth Marketing
Tech Startup Growth Hacking 101  - Basics on Growth MarketingTech Startup Growth Hacking 101  - Basics on Growth Marketing
Tech Startup Growth Hacking 101 - Basics on Growth MarketingShawn Pang
ย 
M.C Lodges -- Guest House in Jhang.
M.C Lodges --  Guest House in Jhang.M.C Lodges --  Guest House in Jhang.
M.C Lodges -- Guest House in Jhang.Aaiza Hassan
ย 
It will be International Nurses' Day on 12 May
It will be International Nurses' Day on 12 MayIt will be International Nurses' Day on 12 May
It will be International Nurses' Day on 12 MayNZSG
ย 
Grateful 7 speech thanking everyone that has helped.pdf
Grateful 7 speech thanking everyone that has helped.pdfGrateful 7 speech thanking everyone that has helped.pdf
Grateful 7 speech thanking everyone that has helped.pdfPaul Menig
ย 
Event mailer assignment progress report .pdf
Event mailer assignment progress report .pdfEvent mailer assignment progress report .pdf
Event mailer assignment progress report .pdftbatkhuu1
ย 
Mondelez State of Snacking and Future Trends 2023
Mondelez State of Snacking and Future Trends 2023Mondelez State of Snacking and Future Trends 2023
Mondelez State of Snacking and Future Trends 2023Neil Kimberley
ย 
Sales & Marketing Alignment: How to Synergize for Success
Sales & Marketing Alignment: How to Synergize for SuccessSales & Marketing Alignment: How to Synergize for Success
Sales & Marketing Alignment: How to Synergize for SuccessAggregage
ย 
KYC-Verified Accounts: Helping Companies Handle Challenging Regulatory Enviro...
KYC-Verified Accounts: Helping Companies Handle Challenging Regulatory Enviro...KYC-Verified Accounts: Helping Companies Handle Challenging Regulatory Enviro...
KYC-Verified Accounts: Helping Companies Handle Challenging Regulatory Enviro...Any kyc Account
ย 
Pharma Works Profile of Karan Communications
Pharma Works Profile of Karan CommunicationsPharma Works Profile of Karan Communications
Pharma Works Profile of Karan Communicationskarancommunications
ย 
Russian Faridabad Call Girls(Badarpur) : โ˜Ž 8168257667, @4999
Russian Faridabad Call Girls(Badarpur) : โ˜Ž 8168257667, @4999Russian Faridabad Call Girls(Badarpur) : โ˜Ž 8168257667, @4999
Russian Faridabad Call Girls(Badarpur) : โ˜Ž 8168257667, @4999Tina Ji
ย 
Best VIP Call Girls Noida Sector 40 Call Me: 8448380779
Best VIP Call Girls Noida Sector 40 Call Me: 8448380779Best VIP Call Girls Noida Sector 40 Call Me: 8448380779
Best VIP Call Girls Noida Sector 40 Call Me: 8448380779Delhi Call girls
ย 
Boost the utilization of your HCL environment by reevaluating use cases and f...
Boost the utilization of your HCL environment by reevaluating use cases and f...Boost the utilization of your HCL environment by reevaluating use cases and f...
Boost the utilization of your HCL environment by reevaluating use cases and f...Roland Driesen
ย 
0183760ssssssssssssssssssssssssssss00101011 (27).pdf
0183760ssssssssssssssssssssssssssss00101011 (27).pdf0183760ssssssssssssssssssssssssssss00101011 (27).pdf
0183760ssssssssssssssssssssssssssss00101011 (27).pdfRenandantas16
ย 

Recently uploaded (20)

MONA 98765-12871 CALL GIRLS IN LUDHIANA LUDHIANA CALL GIRL
MONA 98765-12871 CALL GIRLS IN LUDHIANA LUDHIANA CALL GIRLMONA 98765-12871 CALL GIRLS IN LUDHIANA LUDHIANA CALL GIRL
MONA 98765-12871 CALL GIRLS IN LUDHIANA LUDHIANA CALL GIRL
ย 
Call Girls In Panjim North Goa 9971646499 Genuine Service
Call Girls In Panjim North Goa 9971646499 Genuine ServiceCall Girls In Panjim North Goa 9971646499 Genuine Service
Call Girls In Panjim North Goa 9971646499 Genuine Service
ย 
Lucknow ๐Ÿ’‹ Escorts in Lucknow - 450+ Call Girl Cash Payment 8923113531 Neha Th...
Lucknow ๐Ÿ’‹ Escorts in Lucknow - 450+ Call Girl Cash Payment 8923113531 Neha Th...Lucknow ๐Ÿ’‹ Escorts in Lucknow - 450+ Call Girl Cash Payment 8923113531 Neha Th...
Lucknow ๐Ÿ’‹ Escorts in Lucknow - 450+ Call Girl Cash Payment 8923113531 Neha Th...
ย 
Unlocking the Secrets of Affiliate Marketing.pdf
Unlocking the Secrets of Affiliate Marketing.pdfUnlocking the Secrets of Affiliate Marketing.pdf
Unlocking the Secrets of Affiliate Marketing.pdf
ย 
Cash Payment 9602870969 Escort Service in Udaipur Call Girls
Cash Payment 9602870969 Escort Service in Udaipur Call GirlsCash Payment 9602870969 Escort Service in Udaipur Call Girls
Cash Payment 9602870969 Escort Service in Udaipur Call Girls
ย 
Enhancing and Restoring Safety & Quality Cultures - Dave Litwiller - May 2024...
Enhancing and Restoring Safety & Quality Cultures - Dave Litwiller - May 2024...Enhancing and Restoring Safety & Quality Cultures - Dave Litwiller - May 2024...
Enhancing and Restoring Safety & Quality Cultures - Dave Litwiller - May 2024...
ย 
Mysore Call Girls 8617370543 WhatsApp Number 24x7 Best Services
Mysore Call Girls 8617370543 WhatsApp Number 24x7 Best ServicesMysore Call Girls 8617370543 WhatsApp Number 24x7 Best Services
Mysore Call Girls 8617370543 WhatsApp Number 24x7 Best Services
ย 
Tech Startup Growth Hacking 101 - Basics on Growth Marketing
Tech Startup Growth Hacking 101  - Basics on Growth MarketingTech Startup Growth Hacking 101  - Basics on Growth Marketing
Tech Startup Growth Hacking 101 - Basics on Growth Marketing
ย 
M.C Lodges -- Guest House in Jhang.
M.C Lodges --  Guest House in Jhang.M.C Lodges --  Guest House in Jhang.
M.C Lodges -- Guest House in Jhang.
ย 
It will be International Nurses' Day on 12 May
It will be International Nurses' Day on 12 MayIt will be International Nurses' Day on 12 May
It will be International Nurses' Day on 12 May
ย 
Grateful 7 speech thanking everyone that has helped.pdf
Grateful 7 speech thanking everyone that has helped.pdfGrateful 7 speech thanking everyone that has helped.pdf
Grateful 7 speech thanking everyone that has helped.pdf
ย 
Event mailer assignment progress report .pdf
Event mailer assignment progress report .pdfEvent mailer assignment progress report .pdf
Event mailer assignment progress report .pdf
ย 
Mondelez State of Snacking and Future Trends 2023
Mondelez State of Snacking and Future Trends 2023Mondelez State of Snacking and Future Trends 2023
Mondelez State of Snacking and Future Trends 2023
ย 
Sales & Marketing Alignment: How to Synergize for Success
Sales & Marketing Alignment: How to Synergize for SuccessSales & Marketing Alignment: How to Synergize for Success
Sales & Marketing Alignment: How to Synergize for Success
ย 
KYC-Verified Accounts: Helping Companies Handle Challenging Regulatory Enviro...
KYC-Verified Accounts: Helping Companies Handle Challenging Regulatory Enviro...KYC-Verified Accounts: Helping Companies Handle Challenging Regulatory Enviro...
KYC-Verified Accounts: Helping Companies Handle Challenging Regulatory Enviro...
ย 
Pharma Works Profile of Karan Communications
Pharma Works Profile of Karan CommunicationsPharma Works Profile of Karan Communications
Pharma Works Profile of Karan Communications
ย 
Russian Faridabad Call Girls(Badarpur) : โ˜Ž 8168257667, @4999
Russian Faridabad Call Girls(Badarpur) : โ˜Ž 8168257667, @4999Russian Faridabad Call Girls(Badarpur) : โ˜Ž 8168257667, @4999
Russian Faridabad Call Girls(Badarpur) : โ˜Ž 8168257667, @4999
ย 
Best VIP Call Girls Noida Sector 40 Call Me: 8448380779
Best VIP Call Girls Noida Sector 40 Call Me: 8448380779Best VIP Call Girls Noida Sector 40 Call Me: 8448380779
Best VIP Call Girls Noida Sector 40 Call Me: 8448380779
ย 
Boost the utilization of your HCL environment by reevaluating use cases and f...
Boost the utilization of your HCL environment by reevaluating use cases and f...Boost the utilization of your HCL environment by reevaluating use cases and f...
Boost the utilization of your HCL environment by reevaluating use cases and f...
ย 
0183760ssssssssssssssssssssssssssss00101011 (27).pdf
0183760ssssssssssssssssssssssssssss00101011 (27).pdf0183760ssssssssssssssssssssssssssss00101011 (27).pdf
0183760ssssssssssssssssssssssssssss00101011 (27).pdf
ย 

Aem Lect1

  • 1. Advanced Electronic Materials II (GIG 742) Lecture materials in pdf format: http://mse.korea.ac.kr/efml/lec-aem2.htm Professor : Jong-Heun Lee Engineering building, Room No. 208, TEL: 3290-3282, jongheun@korea.ac.kr < Course Description and Objective > ] Offer the fundamentals of ceramic processing which is related to the fabrication of representative passive RLC components and their modules such as MLCC (Multi-Layer Ceramic Capacitor), LTCC (Low Temperature Cofired Ceramics), chip resistor, and chip inductor. The course covers the ceramic processing issues before sintering, which includes 1) the preparation of ceramic powder and its characterization, 2) slurry formulation, 3) basic rheology, 4) tape casting, 5) electroding, and 6) lamination of green sheets. Special focus will be placed upon the fabrication of electronic ceramic components via tape casting process. < References > 1. D. J. Shanefield, quot;Organic Additives and Ceramic Processing,quot; Kulwer (1995) 2. P. C. Hiemenz, โ€œPrinciples of colloid and surface chemistry,โ€ Dekker (1986) 3. ็คพๅœ˜ๆณ•ไบบ ๆ—ฅๆœฌ็ชฏๆฅญๅ”ๆœƒ, Ceramic processing: Powder preparation and forming (1984) 4. ้ฝŠ่—ค่•‚็พฉ, โ€œใƒ•ใ‚กใ‚คใƒณใ‚ปใƒฉใƒŸใ‚ฏใ‚นใฎๆˆๅฝขใจๆœ‰ๆฉŸๆๆ–™,โ€ 5. G. Y. Onoda, quot;Ceramic Processing Before Firing,quot; John Wiley & Sons (1978) 6. J. S. Reed, quot;Principle of Ceramics Processing,quot; John Wiley & Sons (1995) <Grading> final exam (50%) term paper (20%), report (10%), course attendance (20%) Advanced Electronic Ceramics I (2004) Coverage of the lecture 1. The review of the powder preparations (Focus was placed upon the electroceramics powder) (target): preparation of fine, high-purity, less-agglomerated powder 2. Study the fundamental of the powder dispersion in liquid - The basics of the colloid chemistry (electric double layer, Zeta potential, DLVO theory) - Electrostatic and Steric stabilization of colloid 3. The slurry formation for the tape casting - The understanding of the organic binder, plasticizer, solvent, dispersant - The formulation of above constituents for the good dispersion 4. The processing issues related with the mass production of passive components. (ball milling, deairing, tape casting, drying, electroding screen printing, alignment, punching, cutting, and lamination) Advanced Electronic Ceramics I (2004)
  • 2. Syllabus 1. Overview 2. Powder preparation 1: solid state reaction 3. Powder preparation 2: precipitation 4. Powder preparation 3: other methods 5. Powder characterization 1: particle size 6. Powder characterization 2: BET equation 7. Mixing and Milling 8. Compaction 9. Dispersion of Powder in Liquid 1: Electric Double Layer 10. Dispersion of Powder in Liquid 2: Gouy-Chapmann Theory 11. Dispersion of Powder in Liquid 3: Zeta Potential 12. Dispersion of Powder in Liquid 4 : DLVO theory 13. MLCC: general 14. Slurry Preparation and Slip Casting 1 15. Slurry Preparation and Slip Casting 2: Viscosity 16. Tape Casting 1 17. Tape Casting 2 18. Tape Casting 3: Applications 1 19. Tape Casting 4: Applications 2 20. Screen Printing 21. Chip resistor 22. LTCC1 23. LTCC2 24. Chip inductor and Chip varistor Advanced Electronic Ceramics I (2004) Important powder characteristics in electroceramics Starting point 1 : - The fabrication of ceramic body with a high melting temperature(Tm) using the sintering process at a low temperature(0.7 ~ 0.9Tm) - requires the finer particles for the lower sintering temperature Starting Point 2 : - The high-purity powder preparation for the well-designed the electronic properties. - requires high-purity source materials and wet-chemical process Starting Point 3 : (in the view of electroceramics by mass production) - The preparation of well-dispersed slurry with a high solid loading (using a minimum binder, plasticizer, solvent, and dispersent) - results optimum particle size (1~0.1ยตm) Advanced Electronic Ceramics I (2004)
  • 3. Why Fine Powder? To reduce sintering temperature - full density at - maximize the driving force for the sintering 1000oC (excess free energy of surface) ( ~ 0.42 Tm) - reduce the sintering temperature - provide fast densification kinetics (Herringโ€™s scaling law: t2 =ฮปn t1) Ex) CeO2 - at high temperature 4CeO2 โ†’ 2Ce2O3 + O2 (g) : retard the densification - Low-temperature sintering Aggregate is desirable! problem J. -G. Li, T. Ikegami, J. -H. Lee, T. Mori, Acta mater. 49, 419-426 (2001) Advanced Electronic Ceramics I (2004) What is good powder? 1. Fine 2. High purity 3. Narrow particle size distribution 4. Homogeneous composition 5. Small agglomeration between primarily particles 6. Good flowability (for better compaction and screen printing) 7. Stability against atmosphere 8. Spherical morphology Advanced Electronic Ceramics I (2004)
  • 4. Design of particle size for electronic ceramics (tape casting) For tape casting, the powder should be dispersed in a liquid slurry homogeneously. 10-3 10-6 10-9 10-10(m) ยตm mm nm ร… Micro regime Nano regime Driving force for sintering Utilization of the surface and interfacial properties Easy to achieve dispersion Our challenge Weak interaction Dispersion Dispersion Severe interaction between particles (current) (future) between particles 0.5 -10 ยตm 30-500 nm (Van der Waals) 1-5 m2/g 5-100 m2/g Advanced Electronic Ceramics I (2004) Multi Layer Ceramic Capacitor: Why Fine Powder 2? downsizing A C = ฮต 0ฮต r For high C in small volume d nโ†‘, t โ†“ (1005โ†’ 0603 โ†’ 0402) the particle size โ†“ C: Capacitance n: number of layer improvement in ฮต0 : permittivity in vacuum the dispersion technology ฮตr : dielectric constant improved cutting, aligning, A: area t: thickness electroding Advanced Electronic Ceramics I (2004)
  • 5. ์‚ผ์„ฑ์ „๊ธฐ, ์„ธ๊ณ„ ์ตœ์†Œํ˜• MLCC ๊ฐœ๋ฐœ ์‚ผ์„ฑ์ „๊ธฐ๊ฐ€ ์„ธ๊ณ„์—์„œ ๊ฐ€์žฅ ์ž‘๊ณ  ๊ฐ€๋ฒผ์šด ์ ์ธต์„ธ๋ผ๋ฏน์ฝ˜๋ด์„œ(MLCC)๋ฅผ ๊ฐœ๋ฐœํ•˜๋Š”๋ฐ ์„ฑ๊ณตํ–ˆ๋‹ค. ์ด์— ๋”ฐ๋ผ ์‚ผ์„ฑ์ „๊ธฐ๋Š” MLCC ๊ธฐ์ˆ ๋ ฅ์—์„œ ์ผ๋ณธ์„ ์ฒ˜์Œ ์ถ”์›”ํ•œ ๊ฒƒ์€ ๋ฌผ๋ก  ์„ธ๊ณ„ 1์œ„ ํ’ˆ๋ชฉ์˜ ๊ฐ€๋Šฅ์„ฑ์„ ํ•œ์ธต ์ œ๊ณ ํ•œ ๊ฒƒ์œผ๋กœ ํ‰๊ฐ€๋œ๋‹ค. ์‚ผ์„ฑ์ „๊ธฐ(๋Œ€ํ‘œ ๊ฐ•ํ˜ธ๋ฌธ)๋Š” ๋จธ๋ฆฌ์นด๋ฝ ๊ตต๊ธฐ์™€ ํฌ๊ธฐ๊ฐ€ ๋น„์Šทํ•ด ๋ˆˆ์œผ๋กœ ํ˜•์ƒ์ด ๊ตฌ๋ถ„๋˜์ง€ ์•Š์„ ์ •๋„๋กœ ๊ทน์†Œํ˜•์ด๊ณ  ๋ฌด๊ฒŒ๋„ 90ใŽ์œผ๋กœ ์ดˆ๊ฒฝ๋Ÿ‰์ธ โ€˜0402(0.4X0.2mm) MLCCโ€™๋ฅผ ์ผ๋ณธ ๋ฌด๋ผํƒ€๋ณด๋‹ค ํ•œ ๋ฐœ ์•ž์„œ ๊ฐœ๋ฐœ, ๋‚ด๋…„ ์ƒ๋ฐ˜๊ธฐ์ค‘ ์–‘์‚ฐ์— ๋“ค์–ด๊ฐ„๋‹ค๊ณ  18์ผ ๋ฐํ˜”๋‹ค. 0402 MLCC๋Š” ๊ธฐ์กด ์ตœ์†Œํ˜• ์ œํ’ˆ์ธ 0603 MLCC์— ๋น„ํ•ด ๋ถ€ํ”ผ๊ฐ€ 3๋ถ„์˜ 1 ์ดํ•˜์ด๋ฉฐ ํ˜„์žฌ ๊ฐ€์žฅ ๋งŽ์ด ์‚ฌ์šฉ์ค‘์ธ 1005 MLCC์— ๋น„ํ•ด ๊ทธ ๋ถ€ํ”ผ๊ฐ€ 15๋ถ„์˜ 1์— ๋ถˆ๊ณผํ•œ ์ดˆ์†Œํ˜• ์ œํ’ˆ์œผ๋กœ ํœด๋Œ€์šฉ ์ „์ž๊ธฐ๊ธฐ ์ดˆ์†Œํ˜•ํ™”์— ํŒŒ๊ธ‰ ํšจ๊ณผ๊ฐ€ ์ปค ํ–ฅํ›„ ๊ทธ ์ˆ˜์š”๊ฐ€ ๊ธฐํ•˜๊ธ‰์ˆ˜์ ์œผ๋กœ ์ฆ๊ฐ€ํ•  ๊ฒƒ์œผ๋กœ ์˜ˆ์ƒ๋˜๋Š” ์ œํ’ˆ์ด๋‹ค. ๋˜ 0402 MLCC๋Š” ์†Œ์ฃผ ํ•œ ์ž” ๋ถ„๋Ÿ‰์˜ ๊ฐ€๊ฒฉ์ด 1500๋งŒ์› ์ด์ƒ์— ๋‹ฌํ•ด ๊ธˆ๋ณด๋‹ค ๋น„์‹ผ ๊ณ ๋ถ€๊ฐ€ ์ œํ’ˆ์ด๋‹ค. ์‚ผ์„ฑ์ „๊ธฐ๋Š” ยฑ2ใŽ› ์ˆ˜์ค€์˜ ์ดˆ์ •๋ฐ€ ๋‚ด๋ถ€์ „๊ทน ์ธ์‡„๊ธฐ์ˆ ๊ณผ ์™ธ๋ถ€์ „๊ทน ํญ์„ 100ใŽ› ๋ฏธ๋งŒ์œผ๋กœ ํ˜•์„ฑํ•˜๋Š” ์™ธ๋ถ€์ „๊ทน ๋„ํฌ ๊ธฐ์ˆ ์„ ๊ฐœ๋ฐœํ•˜๊ณ  ์นฉ์˜ ์ •ํ™•ํ•œ ํ˜•์ƒ์„ ์œ ์ง€ํ•˜๊ธฐ ์œ„ํ•ด ์••์ฐฉยท์ ˆ๋‹จยท์—ฐ๋งˆ ๊ณต์ •์— ์‹ ๊ณต๋ฒ•์„ ๋„์ž…ํ•จ์œผ๋กœ์จ ์ด๋ฒˆ์— ๊ทน์†Œํ˜• MLCC ๊ฐœ๋ฐœํ–ˆ๋‹ค๊ณ  ์„ค๋ช…ํ–ˆ๋‹ค. ์ด ํšŒ์‚ฌ ์ค‘์•™์—ฐ๊ตฌ์†Œ ๊น€์žฌ์กฐ ์ƒ๋ฌด๋Š” โ€œ์ด๋ฒˆ์— ์„ธ๊ณ„ ์ตœ์†Œํ˜• MLCC ๊ฐœ๋ฐœ์„ ์กฐ๊ธฐ์— ์™„๋ฃŒ, ์„ ์ง„์‚ฌ์™€ ๋™๋“ฑํ•œ ์ˆ˜์ค€์˜ ๊ฒฝ์Ÿ์„ ํ•  ์ˆ˜ ์žˆ๋Š” ๊ธฐ๋ฐ˜์ด ๋งˆ๋ จ๋๋‹คโ€๋ฉฐ โ€œ์‚ผ์„ฑ์ „๊ธฐ๊ฐ€ ์„ ํ–‰ ์ œํ’ˆ ๊ฐœ๋ฐœ ์ฒด์žฌ์— ๋„์ž…ํ•œ ์ด๋ž˜ ์ฒ˜์Œ ์–ป๋Š” ์„ฑ๊ณผ๋ผ๋Š” ์ ์—์„œ ๊ทธ ์˜๋ฏธ๊ฐ€ ๋งค์šฐ ํฌ๋‹คโ€๊ณ  ๋งํ–ˆ๋‹ค. ์‚ผ์„ฑ์ „๊ธฐ๋Š” 2004๋…„ ํ•˜๋ฐ˜๊ธฐ ์ดํ›„ 0603 MLCC์™€ ๋”๋ถˆ์–ด 0402 MLCC๊ฐ€ ์ดˆ์†Œํ˜• MLCC ์‹œ์žฅ์˜ ์ฃผ์ข…์„ ์ด๋ฃจ๊ณ  ๋‹จ์ผ ํ’ˆ๋ชฉ์œผ๋กœ 1์กฐ์› ์ด์ƒ์˜ ์‹œ์žฅ์„ ํ˜•์„ฑํ•  ๊ฒƒ์œผ๋กœ ์˜ˆ์ธก, ๋‚ด๋…„ ์ƒ๋ฐ˜๊ธฐ ์ค‘์— ์–‘์‚ฐ๊ฒ€์ฆ์„ ์™„๋ฃŒํ•œ ์ œํ’ˆ์„ ์ถœ์‹œํ•  ๊ณ„ํš์œผ๋กœ ์•Œ๋ ค์กŒ๋‹ค. ๋˜ ์ด ํšŒ์‚ฌ๋Š” MLCC๋ฅผ 2007๋…„๊นŒ์ง€ ์„ธ๊ณ„1์œ„ ํ’ˆ๋ชฉ์œผ๋กœ ์œก์„ฑํ•˜๊ธฐ ์œ„ํ•ด ํ•ต์‹ฌ ์›๋ฃŒ์ธ ์„ธ๋ผ๋ฏนํŒŒ์šฐ๋”์˜ ์ผ๋ถ€ ๋ฌผ๋Ÿ‰์„ ์ž์ฒด ์ƒ์‚ฐํ•˜๋Š” ๊ฒƒ์€ ๋ฌผ๋ก  ํ’ˆ์งˆ ๋ฐ ํ”„๋กœ์„ธ์Šค ๊ฐœ์„ ์„ ํ†ตํ•œ ์›๊ฐ€์ ˆ๊ฐ ํ™œ๋™๊ณผ ๊ณ ์šฉ๋Ÿ‰ ์ œํ’ˆ์˜ ๋งค์ถœ๋น„์ค‘ ํ™•๋Œ€๋ฅผ ํ†ตํ•ด ์ œํ’ˆ ๊ฒฝ์Ÿ๋ ฅ์„ ๊ฐ•ํ™”ํ•œ๋‹ค. ์‚ผ์„ฑ์ „๊ธฐ ๊น€์ข…ํฌ ์ƒ๋ฌด๋Š” โ€œ0603 MLCC๋ฅผ ์ผ๋ณธ ๋ฌด๋ผํƒ€๋ณด๋‹ค 2๋…„ ๋Šฆ๊ฒŒ ๊ฐœ๋ฐœ, ๊ทธ๋™์•ˆ ์ผ๋ณธ์„ ๋’ค์ข‡์•„ ๊ฐ€๋Š” ์‹์ด์—ˆ์œผ๋‚˜ ์ด๋ฒˆ์— 0402 ์ œํ’ˆ์„ ์ˆ˜๊ฐœ์›” ๋จผ์ € ๊ฐœ๋ฐœ, ์ฒ˜์Œ ์ถ”์›”ํ•œ ๊ฒƒ์œผ๋กœ ํŒŒ์•…๋œ๋‹คโ€๋ฉฐ โ€œ์ด๋ฒˆ ๊ฐœ๋ฐœ ์„ฑ๊ณต์œผ๋กœ ์„ธํŠธ์—…์ฒด๋ฅผ ์ด๋Œ ์ˆ˜ ์žˆ๊ฒŒ ๋๋‹คโ€๊ณ  ๋งํ–ˆ๋‹ค. ๋‹จ์œ„๋ฉด์ ๋‹น(cm2) ์‹ค์žฅ๋˜๋Š” MLCC ์ˆ˜๋Š” ๋ชจ๋ฐ”์ผ๊ธฐ๊ธฐ์˜ ๊ธฐ์ˆ ๋ฐœ์ „์œผ๋กœ 2001๋…„ ์•ฝ 40๊ฐœ์—์„œ ํ˜„์žฌ ์•ฝ 50๊ฐœ, 2005๋…„์—๋Š” 60๊ฐœ๋กœ ์˜ˆ์ธก๋˜๋ฉฐ ์ด๋ฅผ ์œ„ํ•ด ๋ถ€ํ’ˆ์˜ ์ดˆ์†Œํ˜•ํ™”๊ฐ€ ์š”๊ตฌ๋œ๋‹ค. [์ „์ž์‹ ๋ฌธ 2003๋…„ 9์›” 19์ผ์ž ๊ธฐ์‚ฌ] Advanced Electronic Ceramics I (2004) Chip inductor - noise suppression for high frequency - possible to use at range above 100MHz - resonance circuits and impedance matching -small DC resistance and high Q factor are required (major applications) 1. mobile communications 2. computer http://www.sem.samsung.co.kr/ Advanced Electronic Ceramics I (2004)
  • 6. Chip resistor 1. Small size 2. No lead (surface-mount type) : Minimize lead inductance 3. Trimmable http://www.sem.samsung.co.kr/ Advanced Electronic Ceramics I (2004) Multilayer chip varistor VBR = nVg = DVg/d small D low VBR(<10V) D: Thickness between electrode Vg: macroscopic breakdown voltage per intergranular barrier d: grain size handheld and portable sets for mobile telecommunications A. Lagrange, Electronic Ceramics, Chapter 1, edited by B.C.H.Steele Advanced Electronic Ceramics I (2004)
  • 7. Multilayer chip varistor: Low breakdown operation Advanced Electronic Ceramics I (2004) LTCC: Low Temperature Co-fired Ceramics Low temperature sintering : ~ 850oC Employ the Ag electrode http://www.murata.com/murata/murata.nsf/pages/multilayer/ Advanced Electronic Ceramics I (2004)
  • 8. [2004 ์‹ ๋…„ํŠน์ง‘]์ „์ž์†Œ์žฌ์‹œ๋Œ€ ์—ด๋ฆฐ๋‹ค (์ „์ž์‹ ๋ฌธ 2004๋…„ 1์›” 1์ผ์ž) โ—† ์ƒˆ๋กœ์šด ๋ถ€ํ’ˆ ์ถœํ˜„ - ์‹ค์žฅ ๋ฉด์  ์ถ•์†Œ๊ฐ€ ๊ด€๊ฑด โ€˜๋‹จ๋ง๊ธฐ ๋ถ€ํ’ˆ์˜ ์‹ค์žฅ๋ฉด์ ์„ ์ค„์—ฌ๋ผโ€™ PDAยท๋””์ง€ํ„ธ์บ ์ฝ”๋”ยทํœด๋Œ€ํฐ ๋“ฑ ๋‹จ๋ง๊ธฐ๊ฐ€ ํ•˜๋‚˜๋กœ ํ†ตํ•ฉ(All-in-One Terminal)๋˜๋ฉด์„œ ๋‹จ๋ง๊ธฐ ๋ถ€ํ’ˆ๋„ ๋ฉ๋‹ฌ์•„ ๋ณตํ•ฉํ™”ยท๊ณ ์ง‘์ ํ™” ํ˜„์ƒ์ชฝ์œผ๋กœ ๊ธ‰์ง„์ „ํ•˜๊ณ  ์žˆ๋‹ค. ๋‹จ๋ง๊ธฐ ๋ถ€ํ’ˆ์˜ ์ด๊ฐ™์€ ์ถ”์„ธ๋Š” ํœด๋Œ€ํฐ ๋“ฑ ๋‹จ๋ง๊ธฐ์˜ ๊ธฐ๋Šฅ์ด ๋‹ค์–‘ํ™”๋˜๊ณ  ํฌ๊ธฐ๊ฐ€ ์ž‘์•„์งˆ์ˆ˜๋ก ๋Š˜์–ด๋‚˜๋Š” ๋ถ€ํ’ˆ์ˆ˜๋ฅผ ์ตœ๋Œ€ํ•œ ์ค„์ด๋Š” ๊ฒƒ์€ ๋ฌผ๋ก  ๋ถ€ํ’ˆ ์‹ค์žฅ ๋ฉด์ ์„ ์ค„์ด๋Š” ๊ฒƒ์ด ์„ ๊ฒฐ ๊ณผ์ œ์ด๊ธฐ ๋•Œ๋ฌธ์ด๋‹ค. ์ด์— ๋”ฐ๋ผ ์‚ผ์„ฑ์ „๊ธฐยทLG์ด๋…ธํ… ๋“ฑ ์—…์ฒด๋“ค์€ ์•ˆํ…Œ๋‚˜์Šค์œ„์นญ๋ชจ๋“ˆ(ASM)๊ณผ SAW(ํ‘œ๋ฉดํƒ„์„ฑํŒŒ)ํ•„ํ„ฐ๋ฅผ ๊ฒฐํ•ฉํ•œ โ€˜ํ”„๋ŸฐํŠธ ์—”๋“œ ๋ชจ๋“ˆ(FEM) ๋“ฑ ์ƒˆ๋กœ์šด ํ˜•ํƒœ์˜ ์ฐจ๊ธฐ ๋ณตํ•ฉ ๋ถ€ํ’ˆ์„ ์ž‡๋”ฐ๋ผ ์„ ๋ณด์ด๊ฑฐ๋‚˜ ๊ฐœ๋ฐœ์ค‘์— ์žˆ๋‹ค. FEM์€ ํœด๋Œ€ํฐ ์†ก์ˆ˜์‹  ์‹ ํ˜ธ๋ฅผ ๋ถ„๋ฆฌ์‹œ์ผœ์ฃผ๊ณ  ์—ฌ๋Ÿฌ ์ฃผํŒŒ์ˆ˜ ์ค‘ ํ•„์š”ํ•œ ์ฃผํŒŒ์ˆ˜๋งŒ์„ ์„ ํƒํ•ด ํ†ต๊ณผ์‹œ์ผœ์ฃผ๋Š” ๋‹ค๊ธฐ๋Šฅ ํ•ต์‹ฌ ๋ถ€ํ’ˆ์ด๋‹ค. ์ง€๋‚œํ•ด๊นŒ์ง€๋Š” ๋“€ํ”Œ๋ ‰์Šคยท์Šค์œ„์นญํšŒ๋กœ ๋“ฑ์˜ ๋ถ€ํ’ˆ์„ ํ•˜๋‚˜๋กœ ํ•ฉ์นœ ์•ˆํ…Œ๋‚˜์Šค์œ„์นญ๋ชจ๋“ˆ(ASM)์ด ์ฃผ๋ชฉ๋ฐ›์•˜๋‹ค. ๊ทธ๋Ÿฌ๋‚˜ ๋‹จ๋ง๊ธฐ๊ฐ€ ๋‹ค๊ธฐ๋Šฅํ™”๋˜๊ณ  ์ž‘์•„์ง€๋ฉด์„œ 1๋…„๋งŒ์— ASM์— SAWํ•„ํ„ฐ์„ ์ถ”๊ฐ€ํ•œ ์ƒˆ๋กœ์šด ๋ณตํ•ฉ ๋ถ€ํ’ˆ์ธ FEM์ด ๋“ฑ์žฅํ•œ ๊ฒƒ. ๋˜ ์•ˆํ…Œ๋‚˜์Šค์œ„์น˜๋ชจ๋“ˆ(ASM)ยทPAMยทSAW ๋“€ํ”Œ๋ ‰์„œ ๋“ฑ 3๊ฐ€์ง€ ๋ชจ๋“ˆ์„ ํ•ฉ์นœ ์ฐจ์„ธ๋Œ€ ๋ณตํ•ฉ ๋ชจ๋“ˆ ๊ฐœ๋ฐœ ์—ด๊ธฐ๋„ ๋œจ๊ฑฐ์›Œ์ง€๊ณ  ์žˆ์–ด ๋‹จ์ผ ๊ธฐ๋Šฅ์˜ ๋ชจ๋“ˆ ๋‚ด์ง€๋Š” VCO ๋“ฑ ๋ถ€ํ’ˆ๋“ค์€ ์ƒˆ๋กœ์šด ๋ณตํ•ฉ ๋ชจ๋“ˆ์— ์ž๋ฆฌ๋ฅผ ๋‚ด์ฃผ๊ณ  ์‹œ์žฅ์—์„œ ์„œ์„œํžˆ ์‚ฌ๋ผ์ง€๊ณ  ์žˆ๋‹ค. ๊ณ ์ง‘์ ํ™”๋„ ํ™œ๋ฐœํžˆ ์ด๋ค„์ง€๊ณ  ์žˆ๋‹ค. ์‹ค์žฅ ๋ฉด์ ์„ ์ค„์ด๊ณ ์ž ์นฉ์‚ฌ์ด์ฆˆํŒจํ‚ค์ง• ๊ธฐ์ˆ ์„ ์ด์šฉํ•ด CDMA์šฉ SAW ๋“€ํ”Œ๋ ‰์„œ์™€ FEM ํฌ๊ธฐ๊ฐ€ ์ ์  ์ž‘์•„์ง€๋ฉด์„œ ์žฅ๊ธฐ์ ์œผ๋กœ RF ๋ฉค์Šค(MEMS) ๊ธฐ์ˆ ์„ ์ด์šฉํ•ด ๋ชจ๋“  ๋ชจ๋“ˆยท๋ถ€ํ’ˆ์„ ์›์นฉ(One Chip)์— ์ง‘์ ์‹œํ‚ค๋Š” ์—ฐ๊ตฌ๊ฐ€ ์ด๋ค„์ง€๊ณ  ์žˆ๋‹ค. ๊ฒŒ๋‹ค๊ฐ€ ๋™์˜์ƒยท์œ„์น˜์ •๋ณด ๋“ฑ ๋ฉ€ํ‹ฐ๋ฏธ๋””์–ด ๋ถ€๊ฐ€๊ธฐ๋Šฅ์ด ์ถ”๊ฐ€๋˜๋ฉด์„œ ์ ์ธต์„ธ๋ผ๋ฏน์ฝ˜๋ด์„œ (MLCC) ์ˆ˜์š”๊ฐ€ ์ฆ๊ฐ€๋จ์— ๋”ฐ๋ผ 0603 MLCC ์‹œ์žฅ๋„ ๋น ๋ฅด๊ฒŒ ํ˜•์„ฑ๋  ๊ฒƒ์œผ๋กœ ์ „๋ง๋œ๋‹ค. ์ด์™€ ํ•จ๊ป˜ ์นฉ์„ธํŠธ์™€ ํšŒ๋กœ์„ค๊ณ„์˜ ๋ฐœ์ „์œผ๋กœ ์ฝ˜๋ด์„œยท์ €ํ•ญยท์ธ๋•ํŠธ ๋“ฑ 3๋Œ€ ์ˆ˜๋™ ๋ถ€ํ’ˆ๋“ค์ด ๊ธฐํŒ์— ์‹ค์žฅ๋˜๋Š” ๊ฒŒ ์•„๋‹ˆ๋ผ ์•„์˜ˆ ๋‚ด์žฅ๋˜๋Š” ์ชฝ์œผ๋กœ ๊ธฐ์ˆ  ๊ฐœ๋ฐœ์ด ํ™œ๋ฐœํžˆ ์ด๋ค„์ง€๊ณ  ์žˆ๋‹ค. ์‚ผ์„ฑ์ „๊ธฐ ๊ฐ•์„์ฒ  ๊ทธ๋ฃน์žฅ์€ โ€œ๋‹จ๋ง๊ธฐ์˜ ๊ณ ๊ธฐ๋Šฅํ™”๋Š” ๋ถ€ํ’ˆ์˜ ์ดˆ์†Œํ˜•ํ™”์™€ ๊ณ ์ง‘์ ํ™”๋ฅผ ์š”๊ตฌํ•˜๋Š” ํ•œํŽธ ์˜ํ•„ํ„ฐยท๋””ํ”Œ๋ ‰์„œยท์Šคํ”Œ๋ฆฌํ„ฐ ๋“ฑ์˜ ๋ถ€ํ’ˆ ์‚ฌ์šฉ์ˆ˜๋ฅผ ์ค„์ด๊ฑฐ๋‚˜ ๊ทธ ๊ธฐ๋Šฅ์„ ๋ณตํ•ฉ ๋ชจ๋“ˆ์ด ๋Œ€์ฒดํ•˜๋Š” ์ชฝ์œผ๋กœ ๋ถ€ํ’ˆ ์‹œ์žฅ์„ ๋ณ€ํ™”์‹œํ‚ค๊ณ  ์žˆ๋‹คโ€๊ณ  ๋ฐํ˜”๋‹ค. Advanced Electronic Ceramics I (2004) LTCC(Low Temperature Cofired Ceramic) ์‚ผ์„ฑ์ „๊ธฐ, ์ดˆ์†Œํ˜• ๋ณตํ•ฉ๊ธฐ๋Šฅ ํœด๋Œ€ํฐ๋ถ€ํ’ˆ FEM ๊ตญ๋‚ด ์ฒซ ๊ฐœ๋ฐœ ๊ฒŒ์žฌ: 2001๋…„ 05์›” 24์ผ (์ „์ž์—”์ง€๋‹ˆ์–ด) ์‚ผ์„ฑ์ „๊ธฐ๊ฐ€ ์œ ๋Ÿฝํ–ฅ ๋“€์–ผ ํœด๋Œ€ํฐ์— ์‚ฌ์šฉ๋˜๋Š” ํ•ต์‹ฌ๋ถ€ํ’ˆ FEM(Front End Module)์„ ๊ฐœ๋ฐœํ–ˆ๋‹ค. ๊ฐ€๋กœ(8.4mm) X ์„ธ๋กœ(5.0mm) X ๋†’์ด(1.9mm)์˜ ํฌ๊ธฐ๋กœ 7๊ฐœ์˜ ๋‚ฑ๊ฐœ ๋ถ€ํ’ˆ์„ ์‚ฌ์šฉํ•  ๋•Œ๋ณด๋‹ค ๋ถ€ํ”ผ๋ฅผ 80ํผ์„ผํŠธ ์ค„์—ฌ์ฃผ๋Š” FEM์€ ํœด๋Œ€ํฐ์— ์‚ฌ์šฉ๋˜์–ด ์†ก์‹ ๊ณผ ์ˆ˜์‹ ์‹ ํ˜ธ๋ฅผ ๋ถ„๋ฆฌ์‹œ์ผœ ์ฃผ๋ฉฐ, ์—ฌ๋Ÿฌ ์ฃผํŒŒ์ˆ˜ ์ค‘ ํ•„์š”ํ•œ ์ฃผํŒŒ์ˆ˜๋งŒ์„ ์„ ํƒํ•ด ํ†ต๊ณผ์‹œ์ผœ์ฃผ๋Š” ์—ญํ• ์„ ๋‹ด๋‹นํ•˜๋Š” ๋‹ค๊ธฐ๋Šฅ ๋ถ€ํ’ˆ์ด๋‹ค. ์ด ๋ถ€ํ’ˆ์€ ๊ธฐ์กด ๋ถ€ํ’ˆ๋ณด๋‹ค ๊ฐ€๊ฒฉ๋ฉด์—์„œ 25ํผ์„ผํŠธ ์ €๋ ดํ•˜๋‹ค. ์‚ผ์„ฑ์ „๊ธฐ ์ธก์€ ์ด ์ œํ’ˆ์˜ ๊ฐœ๋ฐœ์„ ์œ„ํ•ด 1mm ๋†’์ด์˜ LTCC(์ €์˜จ ์†Œ์„ฑ ์„ธ๋ผ๋ฏน)๊ธฐํŒ์— ์ ์ธต ์„ค๊ณ„ ๊ธฐ๋ฒ•์„ ์‚ฌ์šฉํ•˜์—ฌ 13์ธต์˜ ํšŒ๋กœ๋ฅผ ๊ตฌํ˜„ํ–ˆ์œผ๋ฉฐ, SAW ํ•„ํ„ฐ๋ฅผ ๋‚ด์žฅ์‹œ์ผœ ๊ณ ์ฃผํŒŒ ํšŒ๋กœ์—์„œ ์ €ํ•ญ์„ ์ตœ์†Œํ™”ํ•˜๋Š”๋ฐ ์„ฑ๊ณตํ–ˆ๋‹ค๊ณ  ์ „ํ–ˆ๋‹ค. ์ผ๋ณธ์˜ ํžˆํƒ€์น˜ ์™ธ์— ๋‹ค๋ฅธ ์—…์ฒด๋“ค์ด ๋ชจ๋‘ ๊ฐœ๋ฐœ ์ค‘์— ์žˆ๋Š” FEM์€ ํžˆํƒ€์น˜ ์ œํ’ˆ์— ๋น„ํ•ด ํฌ๊ธฐ๊ฐ€ ์ž‘์•„ ํฐ ํ˜ธ์‘์„ ์–ป์„ ์ˆ˜ ์žˆ์„ ๊ฒƒ์œผ๋กœ ๊ธฐ๋Œ€๋˜๊ณ  ์žˆ๋‹ค. ์˜ฌํ•ด ์„ธ๊ณ„ ํœด๋Œ€ํฐ ์‹œ์žฅ์˜ ์˜ˆ์ƒ ๊ทœ๋ชจ๊ฐ€ 5์–ต3์ฒœ๋งŒ ๋Œ€์ด๊ณ  ๊ทธ ์ค‘ 60ํผ์„ผํŠธ๊ฐ€ ์œ ๋Ÿฝํ–ฅ ํœด๋Œ€ํฐ์ด๋ฉฐ, ๊ทธ ๋Œ€๋ถ€๋ถ„์ด ๋“€์–ผํฐ์ž„์„ ๊ฐ์•ˆํ•  ๋•Œ FEM์˜ ์‹œ์žฅ๊ทœ๋ชจ๋Š” 4์–ต ๋‹ฌ๋Ÿฌ ์ด์ƒ์ด ๋  ๊ฒƒ์œผ๋กœ ์˜ˆ์ƒ๋œ๋‹ค. ์‚ผ์„ฑ์ „๊ธฐ FEM์˜ ๋ณธ๊ฒฉ ์–‘์‚ฐ์€ ์˜ฌ 4์‚ฌ๋ถ„๊ธฐ์— ์‹œ์ž‘๋˜๋ฉฐ, ๊ตญ๋‚ด์—์„œ ์ตœ์ดˆ ์ƒ์‚ฐ๋˜์ง€๋งŒ ์ค‘๊ตญ ์‹œ์žฅ ๊ณต๋žต์„ ์œ„ํ•ด ํ…์ง„ ๊ณต์žฅ์—์„œ ๋Œ€๋Ÿ‰ ์ƒ์‚ฐ์„ ํ•  ๊ณ„ํš์ด๋‹ค. ์‚ผ์„ฑ์ „๊ธฐ๋Š” ์—ฐ๊ฐ„ 1์ฒœ๋งŒ ๋Œ€ ์ด์ƒ์˜ ์œ ๋Ÿฝํ–ฅ ํœด๋Œ€ํฐ์„ ์ƒ์‚ฐํ•˜๋Š” ๊ตญ๋‚ด ํœด๋Œ€ํฐ ์—…์ฒด๋“ค์— FEM์„ ๊ณต๊ธ‰ํ•ด 1์ฒœ๋งŒ๋ถˆ ์ด์ƒ์˜ ์ˆ˜์ž…๋Œ€์ฒด ํšจ๊ณผ๋ฅผ ๊ฑฐ๋‘˜ ๊ฒƒ์ด๋ฉฐ, ์•ž์œผ๋กœ ํ”Œ๋ฆฝ์นฉ SAW ํ•„ํ„ฐ๋ฅผ ์ ์šฉํ•œ 6.5 X 5.2 X 1.8mm์˜ ์ดˆ์†Œํ˜• ์ œํ’ˆ์„ ๊ฐœ๋ฐœ, US PCD ๋Œ€์—ญ๊นŒ์ง€ ์ปค๋ฒ„ํ•˜๋Š” ํŠธ๋ฆฌํ”Œ๋ชจ๋“œ ๋ณตํ•ฉ์ œํ’ˆ๋„ ๊ฐœ๋ฐœํ•  ๊ฒƒ์ด๋ผ๊ณ  ๋ฐํ˜”๋‹ค. Advanced Electronic Ceramics I (2004)
  • 9. Bluetooth What is Bluetooth? New communication standard for wireless connectivity. Why the name Bluetooth? Bluetooth was named after 10th Century Danish King Harold Bluetooth. King Harold was credited with uniting the provinces of Denmark under a single crown. Bluetooth technology is suppose to unite all different digital devices under a single standard of connection. Advanced Electronic Ceramics I (2004) Bluetooth Bluetooth is a global de facto standard for wireless connectivity. Based on a low- cost, short-range radio link, Bluetooth cuts the cords that (Potential Applications) used to tie up digital devices. โ™ฆ Laptop PC, PDA โ™ฆ Cordless Phone When two Bluetooth equipped โ™ฆ Cellular/Digital Handsets devices come within 10 meters โ™ฆ Wireless Headsets range of each other, they can establish a connection together. โ™ฆ WLAN (Wireless Local Area Network) And because Bluetooth utilizes a Cards radio-based link, it doesn't โ™ฆ Digital Camera require a line-of-sight connection โ™ฆ WAN Devices (Wide Area Networks) in order to communicate. โ™ฆ PAN Devices (Personal Area Networks) โ™ฆ Wireless Barcode Scanners Your laptop could send information to a printer in the โ™ฆ Wireless PC Accessories next room, or your microwave (Printers, Mouse, keyboard, etc) could send a message to your mobile phone telling you that your meal is ready. From www.nokia.com Advanced Electronic Ceramics I (2004)
  • 10. SOFC(Solid Oxide Fuel Cell) High ratio of energy conversion (~60%) Power-generation module (Breakthrough) Preparation of Defect-free & wide-area 8YSZ sheet Anode supported cell from the brochure of InDEC B.V. Expanded view of SOFC from http://www.spice.or.jp/~fisher/sofc.html Advanced Electronic Ceramics I (2004) Powder Powder Preparation Characterization Dispersion of Powder Slurry Formulation Applications Tape Casting - MLCC Electroding - LTCC Lamination - Chip R, L, C - SOFC Advanced Electronic Ceramics I (2004)