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1. 发明公开

EP1990915A1 ACOUSTIC WAVE DEVICE AND METHOD FOR FABRICATING THE SAME 有权
标题翻译：维多利亚·祖哈德·赫斯特朗（OBERFLÄCHENWELLENANORDNUNGUND VERFAHREN ZU IHRER HERSTELLUNG）
公开(公告)号：EP1990915A1
公开(公告)日：2008-11-12
申请号：EP07713837.8
申请日：2007-02-06
申请人： Murata Manufacturing Co. Ltd.
发明人： KIDO, Shunsuke , NAKAO, Takeshi , NAKAI, Yasuharu , NISHIYAMA, Kenji , KADOTA, Michio
IPC分类号： H03H9/145 , H03H3/08 , H03H9/25
CPC分类号： H03H9/02834 , H03H3/10 , Y10T29/42 , Y10T29/49005 , Y10T29/49155 , Y10T29/49165
摘要： Provided is a surface acoustic wave device in which a temperature characteristic of frequency can be effectively improved without a significant narrowing of a fractional bandwidth and a significant insertion loss.
A surface acoustic wave device 1 includes a piezoelectric substrate 2, at least one interdigital transducer (IDT) electrode 3 formed on the piezoelectric substrate 2, and an insulator layer 6 for improving a temperature characteristic formed so as to cover the IDT electrode 3. When a surface of the insulator layer 6 is classified into a first surface region under which the IDT electrode is positioned and a second surface region under which no IDT electrode is positioned, the surface of the insulator layer in at least one portion of the second surface region is higher than the surface of the insulator layer from the piezoelectric substrate 2 in at least one portion of the first surface region by 0.001λ or more, where the wavelength of an acoustic wave is λ.
摘要翻译：提供了一种表面声波装置，其中可以有效地提高频率的温度特性，而不会使分数带宽显着变窄和显着的插入损耗。表面声波装置1包括压电基板2，形成在压电基板2上的至少一个叉指式换能器（IDT）电极3和用于改善形成为覆盖IDT电极3的温度特性的绝缘体层6.当绝缘体层6的表面被分为位于IDT电极的第一表面区域和没有IDT电极的第二表面区域，绝缘体层的表面在第二表面区域的至少一部分中比第一表面区域的至少一部分中的压电基片2的绝缘体层的表面高出0.001λ以上，其中声波的波长为»。

2. 发明授权

EP1990915B1 ACOUSTIC WAVE DEVICE AND METHOD FOR FABRICATING THE SAME 有权
标题翻译：声波装置及其制造方法
公开(公告)号：EP1990915B1
公开(公告)日：2017-11-01
申请号：EP07713837.8
申请日：2007-02-06
申请人： Murata Manufacturing Co., Ltd.
发明人： KIDO, Shunsuke , NAKAO, Takeshi , NAKAI, Yasuharu , NISHIYAMA, Kenji , KADOTA, Michio
IPC分类号： H03H3/10 , H03H9/145 , H03H9/25
CPC分类号： H03H9/02834 , H03H3/10 , Y10T29/42 , Y10T29/49005 , Y10T29/49155 , Y10T29/49165

3. 发明授权

EP2128982B1 ELASTIC WAVE DEVICE 有权
公开(公告)号：EP2128982B1
公开(公告)日：2019-01-23
申请号：EP08721995.2
申请日：2008-03-13
申请人： Murata Manufacturing Co., Ltd.
发明人： KANDO, Hajime , KIDO, Shunsuke , NAKAO, Takeshi , YAMAMOTO, Daisuke
IPC分类号： H03H9/145 , H03H9/02 , H03H9/00

4. 发明公开

EP2128982A1 ELASTIC WAVE DEVICE 审中-公开
标题翻译：弹性波装置
公开(公告)号：EP2128982A1
公开(公告)日：2009-12-02
申请号：EP08721995.2
申请日：2008-03-13
申请人： Murata Manufacturing Co. Ltd.
发明人： KANDO, Hajime , KIDO, Shunsuke , NAKAO, Takeshi , YAMAMOTO, Daisuke
IPC分类号： H03H9/145
CPC分类号： H03H9/02921 , H03H9/0071 , H03H9/02858 , H03H9/02881 , H03H9/14538 , H03H9/14594
摘要： There is provided an acoustic wave element that enables an improvement of resonance characteristics at the vicinity of a resonance frequency and that prevents short-circuit failure between electrode fingers and degradation in insulation properties. In an acoustic wave element (1), an IDT electrode (3) is in contact with a piezoelectric material. The IDT electrode (3) includes a plurality of electrode fingers. The plurality of electrode fingers include first and second electrode fingers (31 and 32) that adjoin each other in an acoustic wave propagation direction and that connect to different potentials and a first dummy electrode finger (34) facing the first electrode finger (31) via a gap (33) placed on an outer side in an electrode finger length direction of the first electrode finger (31). At the vicinity of the gap, first protrusions (11 to 14) are provided in at least one of the first electrode finger (31) and the first dummy electrode finger (34), the first protrusion protruding in the acoustic wave propagation direction from at least one of side edges of the electrode finger.
摘要翻译：提供了一种声波元件，其能够改善谐振频率附近的谐振特性，并防止电极指之间的短路故障和绝缘特性的劣化。在声波元件（1）中，IDT电极（3）与压电材料接触。 IDT电极（3）包括多个电极指。多个电极指包括在声波传播方向上彼此相邻并且连接到不同电势的第一电极指和第二电极指（31和32）以及经由第一电极指（31）与第一电极指（31）设置在第一电极指（31）的电极指长度方向上的外侧的间隙（33）。在间隙附近，第一突起（11至14）设置在第一电极指（31）和第一虚设电极指（34）中的至少一个中，第一突起沿着声波传播方向从电极指的侧边中的至少一个。

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