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1. (KR1020090125104) ELASTIC WAVE DEVICE

官庁 : 大韓民国
出願番号: 1020097019424 出願日: 13.03.2008
公開番号: 1020090125104 公開日: 03.12.2009
公報種別: A
IPC:
H03H 9/145
H03H 9/64
H 電気
03
基本電子回路
H
インビーダンス回路網,例.共振回路;共振器
9
電気機械的または電気音響的素子を含む回路網;電気機械的共振器
02
細部
125
駆動手段,例.電極,コイル
145
弾性表面波を用いる回路網のためのもの
H 電気
03
基本電子回路
H
インビーダンス回路網,例.共振回路;共振器
9
電気機械的または電気音響的素子を含む回路網;電気機械的共振器
46
濾波器
64
弾性表面波を用いるもの
CPC:
H03H 9/02921
H03H 9/0071
H03H 9/02858
H03H 9/02881
H03H 9/14538
H03H 9/14594
出願人: MURATA MANUFACTURING CO., LTD.
가부시키가이샤 무라타 세이사쿠쇼
発明者: KANDO HAJIME
칸도 하지메
KIDO SHUNSUKE
키도 슌스케
NAKAO TAKESHI
나카오 타케시
YAMAMOTO DAISUKE
야마모토 다이스케
代理人: 윤동열
優先権情報: JP-P-2007-082350 27.03.2007 JP
発明の名称: (EN) ELASTIC WAVE DEVICE
(KO) 탄성파 소자
要約: front page image
(EN) It is an object to provide an elastic wave device that makes it possible to improve a resonance characteristic in the vicinity of a resonance frequency and is hard to cause a short-circuit malfunction or a deterioration in insulation between interdigital electrodes. An elastic wave device is comprised of an IDT electrode (3) that is formed in contact with a piezoelectric member and has a plurality of electrode fingers. The fingers include first and second electrode fingers (31, 32) that are provided side by side in an elastic wave transmitting direction and are connected with different potentials and a first dummy electrode finger (34) provided opposite to the first finger (31) through a gap (33) disposed at the outside in a longitudinal direction of the first electrode finger (31), and first convex portions (11)-(14) projecting from side edges of at least one electrode finger to the elastic wave transmitting direction in at least one of the first electrode finger (31) and the first dummy electrode finger (34) are formed in the vicinity of the gap. COPYRIGHT KIPO WIPO 2010
(KO) 공진 주파수 부근의 공진특성을 개선할 수 있고, 전극지간의 단락 불량이나 절연성의 열화가 생기기 어려운 탄성파 소자를 제공한다.
また、:
EP2128982JPWO2008126614US20090295507CN101595641WO/2008/126614