KR20010029728A - 탄성표면파 장치 및 그것의 제조 방법 - Google Patents
탄성표면파 장치 및 그것의 제조 방법 Download PDFInfo
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- KR20010029728A KR20010029728A KR1020000026668A KR20000026668A KR20010029728A KR 20010029728 A KR20010029728 A KR 20010029728A KR 1020000026668 A KR1020000026668 A KR 1020000026668A KR 20000026668 A KR20000026668 A KR 20000026668A KR 20010029728 A KR20010029728 A KR 20010029728A
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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
- H03H9/46—Filters
- H03H9/64—Filters using surface acoustic waves
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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
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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
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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
- H03H9/125—Driving means, e.g. electrodes, coils
- H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
-
- 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
- H03H9/125—Driving means, e.g. electrodes, coils
- H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
- H03H9/14538—Formation
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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
- H03H9/25—Constructional features of resonators using surface acoustic waves
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- 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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- 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
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49004—Electrical device making including measuring or testing of device or component part
-
- 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
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49016—Antenna or wave energy "plumbing" making
-
- 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
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
- Y10T29/49155—Manufacturing circuit on or in base
- Y10T29/49156—Manufacturing circuit on or in base with selective destruction of conductive paths
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- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Abstract
Description
Claims (19)
- 압전 기판;상기 압전 기판상에 적어도 하나의 인터디지탈 트랜스듀서를 포함한 제 1 탄성표면파 소자; 및상기 압전 기판상에 제공되고 상기 제 1 탄성표면파 소자의 인터디지탈 트랜스듀서의 두께와는 다른 두께를 구비한 적어도 하나의 인터디지탈 트랜스듀서를 포함한 제 2 탄성표면파 소자를 포함함을 특징으로 하는 탄성표면파 장치.
- 제 1항에 있어서, 상기 제 2 탄성표면파 소자는 상기 제 1 탄성표면파 소자의 주파수 특성과는 다른 주파수 특성을 구비함을 특징으로 하는 탄성표면파 장치.
- 제 1항에 있어서, 상기 제 1 및 제 2 탄성표면파 소자들 위에는 절연막이 제공되고, 상기 제 1 탄성표면파 소자의 영역에서의 절연막의 두께는 상기 제 2 탄성표면파 소자의 영역에서의 절연막의 두께와는 다른 것을 특징으로 하는 탄성표면파 장치.
- 제 2항에 있어서, 상기 제 1 및 제 2 탄성표면파 소자들 위에는 절연막이 제공되고, 상기 제 1 탄성표면파 소자의 영역에서의 절연막의 두께는 상기 제 2 탄성표면파 소자의 영역에서의 절연막의 두께와는 다른 것을 특징으로 하는 탄성표면파 장치.
- 압전 기판상에 제공된 제 1 및 제 2 탄성표면파 소자들을 구비한 탄성표면파 장치를 제조하는 방법으로서, 상기 방법은,상기 압전 기판상에 제 1 탄성표면파 소자의 인터디지탈 트랜스듀서를 형성하고, 상기 인터디지탈 트랜스듀서는 단락-회로용 전극을 통해 전기적으로 접속된 입력-출력 단자들을 구비하며;상기 제 1 탄성표면파 소자의 인터디지탈 트랜스듀서와 단락-회로용 전극이 형성되어 있는 상기 기판의 전면에 레지스트(resist)를 제공하며;상기 레지스트를 가열하며;상기 제 2 탄성표면파 소자가 형성되는 영역에서만 상기 레지스트를 제거하며;상기 압전 기판에 도전막을 도포하고, 상기 도전막은 상기 제 1 탄성표면파 소자의 인터디지탈 트랜스듀서의 두께와는 다른 두께를 구비하며;상기 제 2 탄성표면파 소자의 인터디지탈 트랜스듀서를 형성하기 위하여 도전막을 패터닝(patterning)하며;상기 제 1 탄성표면파 소자의 인터디지탈 트랜스듀서의 입력-출력 단자들을 전기적으로 접속하지 않도록 단락-회로용 전극을 절단하며;상기 제 1 및 제 2 탄성표면파 소자들의 인터디지탈 트랜스듀서들 위에 절연막을 형성하며;상기 제 1 및 제 2 탄성표면파 소자들 중의 적어도 하나의 주파수 특성을 조정하기 위하여 상기 절연막의 두께를 감소시키는 단계들을 포함함을 특징으로 하는 탄성표면파 장치의 제조 방법.
- 제 5항에 있어서, 상기 도전막을 패터닝(patterning)하는 단계는 리프트-오프(lift-off) 방법에 의해 실시됨을 특징으로 하는 탄성표면파 장치의 제조 방법.
- 제 5항에 있어서, 상기 방법은 주파수를 조정하는 단계 이전에 웨이퍼 프로빙(wafer probing)에 의해 상기 제 1 및 제 2 탄성표면파 소자들의 주파수 특성들을 측정하는 단계를 더 포함함을 특징으로 하는 탄성표면파 장치의 제조 방법.
- 제 5항에 있어서, 상기 절연막의 두께를 감소시키는 단계는 상기 제 1 탄성표면파 소자의 인터디지탈 트랜스듀서의 영역에 제공된 절연막의 두께가 상기 제 2 탄성표면파 소자의 인터디지탈 트랜스듀서의 영역에 제공된 절연막의 두께와 다르게 되도록 실시됨을 특징으로 하는 탄성표면파 장치의 제조 방법.
- 제 5항에 있어서, 상기 절연막을 형성하는 단계에 의해 형성된 절연막은 상기 제 1 및 제 2 탄성표면파 소자들 중의 적어도 하나가 원하는 주파수 특성을 갖도록 소정의 두께를 포함하고, 상기 절연막의 두께를 감소시키는 단계는 상기 제 1 및 제 2 탄성표면파 소자들 중의 다른 하나의 인터디지탈 트랜스듀서의 영역만을 에칭하여 실시됨을 특징으로 하는 탄성표면파 장치의 제조 방법.
- 제 8항에 있어서, 상기 절연막의 두께를 감소시키는 단계는 상기 제 1 및 제 2 탄성표면파 소자들 중의 하나가 원하는 주파수특성을 갖도록 전체 절연막의 두께를 감소시키고, 상기 제 1 및 제 2 탄성표면파 소자들 중의 다른 하나가 원하는 주파수 특성을 갖도록 절연막의 소정 두께를 결정하기 위하여 상기 제 1 및 제 2 탄성표면파 소자들 중의 다른 하나의 주파수 특성을 측정하며, 상기 측정 단계에 의해 결정된 소정 두께에 기초한 원하는 주파수 특성을 얻기 위하여 상기 제 1 및 제 2 탄성표면파 소자들 중의 다른 하나의 영역 위에서만 절연막의 두께를 감소시키는 단계들을 포함함을 특징으로 하는 탄성표면파 장치의 제조 방법.
- 압전 기판상에 형성된 제 1 및 제 2 탄성표면파 소자들을 포함한 탄성표면파 장치를 제조하는 방법으로서, 상기 방법은,상기 압전 기판상에 제 1 탄성표면파 소자의 인터디지탈 트랜스듀서를 형성하고;상기 압전 기판상에 제 2 탄성표면파 소자의 인터디지탈 트랜스듀서를 형성하며;상기 제 1 및 제 2 탄성표면파 소자들의 인터디지탈 트랜스듀서들을 절연막으로 피복하며;상기 제 1 및 제 2 탄성표면파 소자들 중의 적어도 하나의 주파수 특성을 조정하기 위하여 상기 절연막의 두께를 감소시키는 단계들을 포함함을 특징으로 하는 탄성표면파 장치의 제조 방법.
- 제 11항에 있어서, 상기 절연막을 피복하는 단계에 의해 형성된 절연막은 상기 제 1 및 제 2 탄성표면파 소자들 중의 하나가 원하는 주파수 특성을 갖도록 소정의 두께를 포함하고, 상기 절연막의 두께를 감소시키는 단계는 상기 제 1 및 제 2 탄성표면파 소자들 중의 다른 하나의 인터디지탈 트랜스듀서의 영역만을 에칭하여 실시됨을 특징으로 하는 탄성표면파 장치의 제조 방법.
- 제 11항에 있어서, 상기 절연막의 두께를 감소시키는 단계는 상기 제 1 및 제 2 탄성표면파 소자들 중의 하나가 원하는 주파수 특성을 갖도록 전체 절연막의 두께를 감소시키고, 상기 제 1 및 제 2 탄성표면파 소자들 중의 다른 하나가 원하는 주파수 특성을 갖도록 절연막의 소정 두께를 결정하기 위하여 상기 제 1 및 제 2 탄성표면파 소자들 중의 다른 하나의 주파수 특성을 측정하며, 상기 측정 단계에 의해 결정된 소정 두께에 기초한 원하는 주파수 특성을 얻기 위하여 상기 제 1 및 제 2 탄성표면파 소자들 중의 다른 하나의 영역 위에서만 절연막의 두께를 감소시키는 단계들을 포함함을 특징으로 하는 탄성표면파 장치의 제조 방법.
- 제 11항에 있어서, 상기 제 1 탄성표면파 소자의 인터디지탈 트랜스듀서는 단락-회로용 전극을 통해 전기적으로 접속되는 입력-출력 단자들을 포함하고;상기 제 1 탄성표면파 소자의 인터디지탈 트랜스듀서를 형성하는 단계는 상기 제 1 탄성표면파 소자의 인터디지탈 트랜스듀서와 단락-회로용 전극이 형성되어 있는 기판의 전면에 레지스트를 형성하고, 상기 레지스트를 가열하며, 상기 제 2 탄성표면파 소자가 형성되는 영역에서만 레지스트는 제거하며, 상기 압전 기판에 제공되고 상기 제 1 탄성표면파 소자의 인터디지탈 트랜스듀서의 두께와는 다른 두께를 구비한 도전막을 도포하는 단계들을 포함함을 특징으로 하는 탄성표면파 장치의 제조 방법.
- 제 14항에 있어서, 상기 방법은, 상기 압전 기판상에 제공되고 상기 제 1 탄성표면파 소자의 인터디지탈 트랜스듀서의 두께와는 다른 두께를 구비한 도전막을 도포하고, 상기 제 2 탄성표면파 소자의 인터디지탈 트랜스듀서를 형성하기 위하여 도전막을 패터닝(patterning)하며, 상기 제 1 탄성표면파 소자의 인터디지탈 트랜스듀서의 입력-출력 단자들과 전기적으로 접속되지 않도록 단락-회로용 전극을 절단하며, 상기 제 1 및 제 2 탄성표면파 소자들의 인터디지탈 트랜스듀서들 위에 절연막을 형성하며, 상기 제 1 및 제 2 탄성표면파 소자들의 적어도 하나의 주파수 특성을 조정하기 위하여 절연막의 두께를 감소시키는 단계들을 더 포함함을 특징으로 하는 탄성표면파 장치의 제조 방법.
- 제 10항에 있어서, 상기 도전막을 패터닝하는 단계는 리프트-오프(lift-off) 방법에 의해 실시됨을 특징으로 하는 탄성표면파 장치의 제조 방법.
- 제 10항에 있어서, 상기 방법은, 주파수를 조정하는 단계 이전에 웨이퍼 프로빙(wafer probing)에 의해 상기 제 1 및 제 2 탄성표면파 소자들의 주파수 특성들을 측정하는 단계를 더 포함함을 특징으로 하는 탄성표면파 장치의 제조 방법.
- 제 10항에 있어서, 상기 절연막의 두께를 감소시키는 단계는 상기 제 1 탄성표면파 소자의 인터디지탈 트랜스듀서의 영역에 제공된 절연막의 두께가 상기 제 2 탄성표면파 소자의 인터디지탈 트랜스듀서의 영역에 제공된 절연막의 두께와 다르도록 실시됨을 특징으로 하는 탄성표면파 장치의 제조 방법.
- 제 10항에 있어서, 상기 절연막을 형성하는 단계에 의해 형성된 절연막은 상기 제 1 및 제 2 탄성표면파 소자들 중의 하나가 원하는 주파수 특성을 갖도록 소정의 두께를 포함하고, 상기 절연막의 두께를 감소시키는 단계는 상기 제 1 및 제 2 탄성표면파 소자들 중의 다른 하나의 인터디지탈 트랜스듀서의 영역만을 에칭하여 실시됨을 특징으로 하는 탄성표면파 장치의 제조 방법.
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JP14680099A JP3317274B2 (ja) | 1999-05-26 | 1999-05-26 | 弾性表面波装置及び弾性表面波装置の製造方法 |
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EP (1) | EP1056202B8 (ko) |
JP (1) | JP3317274B2 (ko) |
KR (1) | KR100560067B1 (ko) |
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1999
- 1999-05-26 JP JP14680099A patent/JP3317274B2/ja not_active Expired - Fee Related
-
2000
- 2000-05-18 KR KR1020000026668A patent/KR100560067B1/ko not_active Expired - Fee Related
- 2000-05-19 US US09/574,794 patent/US6516503B1/en not_active Expired - Fee Related
- 2000-05-26 EP EP00401484A patent/EP1056202B8/en not_active Expired - Lifetime
- 2000-05-26 DE DE60036050T patent/DE60036050D1/de not_active Expired - Lifetime
- 2000-05-26 CN CNB001089986A patent/CN1173467C/zh not_active Expired - Fee Related
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2002
- 2002-10-10 US US10/269,569 patent/US6710514B2/en not_active Expired - Fee Related
Cited By (4)
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KR100609967B1 (ko) * | 2001-06-06 | 2006-08-04 | 가부시키가이샤 무라타 세이사쿠쇼 | 탄성표면파 장치 |
KR100796073B1 (ko) * | 2005-05-11 | 2008-01-21 | 세이코 엡슨 가부시키가이샤 | 램파형 고주파 디바이스 |
KR100900874B1 (ko) * | 2006-09-25 | 2009-06-04 | 후지쓰 메디아 데바이스 가부시키가이샤 | 필터 및 분파기 |
US7741931B2 (en) | 2006-09-25 | 2010-06-22 | Fujitsu Media Devices Limited | Acoustic wave device, resonator and filter |
Also Published As
Publication number | Publication date |
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JP2000341068A (ja) | 2000-12-08 |
EP1056202A2 (en) | 2000-11-29 |
DE60036050D1 (de) | 2007-10-04 |
EP1056202B8 (en) | 2007-10-10 |
US6710514B2 (en) | 2004-03-23 |
US6516503B1 (en) | 2003-02-11 |
EP1056202B1 (en) | 2007-08-22 |
CN1278123A (zh) | 2000-12-27 |
CN1173467C (zh) | 2004-10-27 |
KR100560067B1 (ko) | 2006-03-13 |
US20030038562A1 (en) | 2003-02-27 |
EP1056202A3 (en) | 2003-03-26 |
JP3317274B2 (ja) | 2002-08-26 |
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