KR101766487B1 - 복합 기판의 제조 방법 및 복합 기판 - Google Patents
복합 기판의 제조 방법 및 복합 기판 Download PDFInfo
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- KR101766487B1 KR101766487B1 KR1020110101586A KR20110101586A KR101766487B1 KR 101766487 B1 KR101766487 B1 KR 101766487B1 KR 1020110101586 A KR1020110101586 A KR 1020110101586A KR 20110101586 A KR20110101586 A KR 20110101586A KR 101766487 B1 KR101766487 B1 KR 101766487B1
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/02—Details
- H03H9/05—Holders or supports
- H03H9/058—Holders or supports for surface acoustic wave devices
- H03H9/0585—Holders or supports for surface acoustic wave devices consisting of an adhesive layer
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
- H03H3/007—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
- H03H3/08—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of resonators or networks using surface acoustic waves
- H03H3/10—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of resonators or networks using surface acoustic waves for obtaining desired frequency or temperature coefficient
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/02—Details
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02543—Characteristics of substrate, e.g. cutting angles
- H03H9/02574—Characteristics of substrate, e.g. cutting angles of combined substrates, multilayered substrates, piezoelectrical layers on not-piezoelectrical substrate
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/02—Details
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02614—Treatment of substrates, e.g. curved, spherical, cylindrical substrates ensuring closed round-about circuits for the acoustical waves
- H03H9/02622—Treatment of substrates, e.g. curved, spherical, cylindrical substrates ensuring closed round-about circuits for the acoustical waves of the surface, including back surface
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/01—Manufacture or treatment
- H10N30/07—Forming of piezoelectric or electrostrictive parts or bodies on an electrical element or another base
- H10N30/072—Forming of piezoelectric or electrostrictive parts or bodies on an electrical element or another base by laminating or bonding of piezoelectric or electrostrictive bodies
- H10N30/073—Forming of piezoelectric or electrostrictive parts or bodies on an electrical element or another base by laminating or bonding of piezoelectric or electrostrictive bodies by fusion of metals or by adhesives
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/42—Piezoelectric device making
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- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Abstract
(a) 이면(11a)에 미소한 요철이 형성된 압전 기판(21)과, 압전 기판(21)에 비하여 열팽창계수가 작은 지지 기판(12)을 준비하고, (b) 미소한 요철을 메우도록 이면(11a)에 충전제를 도포하여 충전층(23)을 형성하며, (c) 산술 평균 조도(Ra)가 (a)에 있어서의 이면(11a)의 산술 평균 조도(Ra)보다 작아지도록 충전층(23)의 표면을 경면 연마하고, (d) 충전층(13)의 표면(13a)과 지지 기판(12)의 표면을 접착층(14)을 통해 접합시켜 복합 기판(20)을 형성한다.
Description
도 2는 본 발명의 복합 기판(10)의 제조 프로세스를 모식적으로 나타낸 단면도이다.
도 3은 실시예 1 및 비교예 2의 탄성 표면파 소자의 평면도이다.
11a : 이면 11b : 최고부
12 : 지지 기판 13, 23 : 충전층
13a : 표면 14, 24 : 접착층
30 : 표면 36, 37 : 빗형 전극
38 : 반사기
Claims (8)
- (a) 한쪽 면에 미소한 요철이 형성된 압전 기판과, 이 압전 기판에 비하여 열팽창계수가 작은 지지 기판을 준비하는 공정과,
(b) 상기 미소한 요철을 메우도록 상기 한쪽 면에 충전제를 도포하여 충전층을 형성하는 공정과,
(c) 산술 평균 조도(Ra)가 상기 공정 (a)에 있어서의 상기 한쪽 면의 산술 평균 조도(Ra)보다 작아지도록 상기 충전층의 표면을 경면 연마하는 공정과,
(d) 상기 충전층의 표면과 지지 기판의 표면을 접착층을 통해 접합시켜 복합 기판을 형성하는 공정을 포함하는 복합 기판의 제조 방법. - 제1항에 있어서, 상기 공정 (c)에서는, 상기 압전 기판에 대한 연마 레이트가 상기 충전층에 대한 연마 레이트보다 낮은 슬러리를 이용하여 상기 충전층의 표면을 경면 연마하는 것인 복합 기판의 제조 방법.
- 제1항 또는 제2항에 있어서, 상기 공정 (c)에서는, 압전 기판의 상기 한쪽 면의 일부가 노출될 때까지 상기 경면 연마를 행하는 것인 복합 기판의 제조 방법.
- 제1항 또는 제2항에 있어서, 상기 공정 (d)에서는, 상기 공정 (b)에서 형성된 충전층과 동일한 재료에 의해 형성된 접착층을 통해 상기 접합을 행하는 것인 복합 기판의 제조 방법.
- 제3항에 있어서, 상기 공정 (d)에서는, 상기 공정 (b)에서 형성된 충전층과 동일한 재료에 의해 형성된 접착층을 통해 상기 접합을 행하는 것인 복합 기판의 제조 방법.
- 한쪽 면에 미소한 요철이 형성된 압전 기판과,
상기 압전 기판에 비하여 열팽창계수가 작은 지지 기판과,
상기 미소한 요철을 메우도록 형성되고, 상기 압전 기판과는 반대측의 접합면의 산술 평균 조도(Ra)가 상기 압전 기판의 한쪽 면의 산술 평균 조도(Ra)보다 작은 충전층과,
상기 접합면과 상기 지지 기판을 접착하는 접착층을 포함하고,
상기 접착층과 상기 충전층의 경계, 상기 접착층의 내부, 그리고 상기 접착층과 상기 지지 기판의 경계에는 기포가 존재하지 않는 것인 복합 기판. - 제6항에 있어서, 상기 접합면에는, 상기 압전 기판의 상기 한쪽 면의 일부가 노출되어 있는 것인 복합 기판.
- 제6항 또는 제7항에 있어서, 상기 접착층은, 상기 충전층과 동일한 재료에 의해 형성되어 있는 것인 복합 기판.
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US39024010P | 2010-10-06 | 2010-10-06 | |
US61/390,240 | 2010-10-06 |
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KR101766487B1 true KR101766487B1 (ko) | 2017-08-08 |
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US (1) | US8729771B2 (ko) |
JP (1) | JP5814727B2 (ko) |
KR (1) | KR101766487B1 (ko) |
CN (1) | CN102624352B (ko) |
DE (1) | DE102011084045B4 (ko) |
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- 2011-10-05 US US13/253,156 patent/US8729771B2/en active Active
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JP2012085286A (ja) | 2012-04-26 |
CN102624352A (zh) | 2012-08-01 |
US8729771B2 (en) | 2014-05-20 |
JP5814727B2 (ja) | 2015-11-17 |
DE102011084045A1 (de) | 2012-04-12 |
KR20120035900A (ko) | 2012-04-16 |
CN102624352B (zh) | 2015-12-09 |
DE102011084045B4 (de) | 2016-12-29 |
US20120086312A1 (en) | 2012-04-12 |
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