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1.发明授权Surface acoustic wave device, surface acoustic wave filter and antenna duplexer using the same, and electronic equipment using the same 有权表面声波装置，表面声波滤波器和使用其的天线双工器，以及使用其的电子设备公开(公告)号：US08035460B2
公开(公告)日：2011-10-11
申请号：US12279631
申请日：2007-02-14
CPC分类号： H03H9/14538 , H03H3/08 , H03H9/1452 , H03H9/6483 , Y10T29/42
摘要： A surface acoustic wave device includes a substrate including lithium niobate; a IDT being provided on an upper surface of the substrate and including a plurality of electrode fingers; and a protective film covering the IDT and having an uneven shape on an upper surface thereof. When a pitch width of one pitch of the IDT is p, a width of one of the electrode fingers is p1, a width between the electrode fingers is p2, and a thickness of the IDT is h, following relations are satisfied, p1+p2=p, and h/(2×p)≧4.5%. With this configuration, an appropriate reflection characteristic is realized, and the surface acoustic wave device having excellent temperature coefficient of frequency and electrical characteristic can be obtained.
摘要翻译： 表面声波装置包括：包含铌酸锂的基板; IDT设置在所述基板的上表面上并且包括多个电极指; 以及覆盖IDT并在其上表面具有不平坦形状的保护膜。 当IDT的一个间距的间距宽度为p时，一个电极指的宽度为p1，电极指之间的宽度为p2，IDT的厚度为h，满足关系，p1 + p2 = p，h /（2×p）≥4.5％。 由此，能够实现适当的反射特性，能够获得具有优异的频率和电特性的温度系数的表面声波装置。
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2.发明申请SURFACE ACOUSTIC WAVE DEVICE, SURFACE ACOUSTIC WAVE FILTER AND ANTENNA DUPLEXER USING THE SAME, AND ELECTRONIC EQUIPMENT USING THE SAME 有权表面声波装置，表面声波滤波器及使用其的天线双工器及使用其的电子设备公开(公告)号：US20100164646A1
公开(公告)日：2010-07-01
申请号：US12279631
申请日：2007-02-14
CPC分类号： H03H9/14538 , H03H3/08 , H03H9/1452 , H03H9/6483 , Y10T29/42
摘要： A surface acoustic wave device includes a substrate including lithium niobate; a IDT being provided on an upper surface of the substrate and including a plurality of electrode fingers; and a protective film covering the IDT and having an uneven shape on an upper surface thereof. When a pitch width of one pitch of the IDT is p, a width of one of the electrode fingers is p1, a width between the electrode fingers is p2, and a thickness of the IDT is h, following relations are satisfied, p1+p2=p, and h/(2×p)≧4.5%. With this configuration, an appropriate reflection characteristic is realized, and the surface acoustic wave device having excellent temperature coefficient of frequency and electrical characteristic can be obtained.
摘要翻译： 表面声波装置包括：包含铌酸锂的基板; IDT设置在所述基板的上表面上并且包括多个电极指; 以及覆盖IDT并在其上表面具有不平坦形状的保护膜。 当IDT的一个间距的间距宽度为p时，一个电极指的宽度为p1，电极指之间的宽度为p2，IDT的厚度为h，满足关系，p1 + p2 = p，h /（2×p）≥4.5％。 由此，能够实现适当的反射特性，能够获得具有优异的频率和电特性的温度系数的表面声波装置。
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公开(公告)号：US07498898B2
公开(公告)日：2009-03-03
申请号：US10587240
申请日：2005-02-02
CPC分类号： H03H3/02 , H03H9/6433
摘要： A plurality of surface acoustic wave resonators including a comb electrode and a grating reflector are coupled on a piezoelectric substrate. Dielectric film is formed on the surface of at least one surface acoustic wave resonator. No dielectric film is formed on the surface of at least one other surface acoustic wave resonator. Thus, a SAW filter where the insertion loss into a pass band is small, the steepness is sufficient, and the band is wide can be obtained.
摘要翻译： 包括梳状电极和光栅反射器的多个声表面波谐振器耦合在压电基片上。 介电膜形成在至少一个表面声波谐振器的表面上。 在至少一个其它表面声波谐振器的表面上不形成介质膜。 因此，其中插入损耗进入通带的SAW滤波器小，陡度足够，并且可以获得宽带。
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公开(公告)号：US20090115554A1
公开(公告)日：2009-05-07
申请号：US12333855
申请日：2008-12-12
申请人： Ryoichi Takayama , Hidekazu Nakanishi , Takashi Inoue , Tetsuo Kawasaki , Kouji Hasegawa , Yukio Iwasaki
发明人： Ryoichi Takayama , Hidekazu Nakanishi , Takashi Inoue , Tetsuo Kawasaki , Kouji Hasegawa , Yukio Iwasaki
IPC分类号： H03H9/00
CPC分类号： H03H9/145 , H03H3/10 , H03H9/02559 , H03H9/02834 , H03H9/02929 , H03H9/02984 , H03H9/25 , H03H9/6496
摘要： An electronic part, an object of which is to improve temperature characteristics and electrical properties, includes a substrate (1), a comb-type electrode (2) that is disposed on the upper surface of the substrate (1), and a protective film (4) that covers the comb-type electrode (2) and has an uneven shape at its top surface. If the pitch width of one pitch in the uneven shape of the protective film (4) is L, the width of one pitch of a convex portion (4a) of the unevenness in the uneven shape of the protective film (4) is L1, the width of one pitch of a concave portion (4b) thereof is L2, the pitch width of one pitch of the comb-type electrode (2) is p, the width of one of electrode fingers which form the comb-type electrode (2) is p1 and the width between the electrode fingers is p2, then each parameter is set so that the following expressions are satisfied, L1≦p1 and L2≧p2 (herein, the correlations of L≈p, p1+p2=p and L1+L2=L are satisfied).
摘要翻译： 电子部件，其目的在于提高温度特性和电性能，包括基板（1），设置在基板（1）的上表面上的梳状电极（2）和保护膜 （4），其覆盖梳状电极（2），并且在其顶面具有不均匀的形状。 如果保护膜（4）的凹凸形状中的一个间距的间距宽度为L，则保护膜（4）的凹凸形状的凹凸的凸部（4a）的一个间距的宽度为L1， 其凹部（4b）的一个间距的宽度为L2，梳型电极（2）的一个间距的间距宽度为p，形成梳型电极（2）的电极指的一个的宽度 ）为p1，电极指之间的宽度为p2，则设定每个参数，使得满足以下表达式：L1 <= p1和L2> = p2（这里，L≈p，p1 + p2 = p 并且L1 + L2 = L）。
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5.发明授权Surface acoustic wave device and manufacturing method of the same surface acoustic wave device 有权声表面波装置及相同声表面波装置的制造方法公开(公告)号：US08174165B2
公开(公告)日：2012-05-08
申请号：US12720778
申请日：2010-03-10
摘要： A surface acoustic wave device includes a piezoelectric element, an IDT electrode formed on the piezoelectric element for exciting a principal wave, a reflection film formed on the piezoelectric element having a higher reflectivity than the reflectivity of the piezoelectric element in a visible light wavelength region, and a light permeable dielectric layer formed on the piezoelectric element, at least a part of the IDT electrode, and the reflection film. Accordingly, when measuring the film thickness of the light permeable dielectric layer by light interference method, the reflected light from the reflection film having a higher reflectivity than the reflectivity of the piezoelectric element in a visible light wavelength region can be utilized, so that the film thickness can be measured more accurately.
摘要翻译： 表面声波装置包括压电元件，形成在用于激励主波的压电元件上的IDT电极，形成在压电元件上的具有比可见光波长区域中的压电元件的反射率更高的反射率的反射膜， 以及形成在压电元件上的透光性介电层，IDT电极的至少一部分和反射膜。 因此，当通过光干涉法测量透光电介质层的膜厚时，可以利用具有比可见光波长区域中的压电元件的反射率更高的反射率的反射膜的反射光，使得膜 可以更精确地测量厚度。
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6.发明授权Surface acoustic wave resonator, and surface acoustic wave filter and antenna duplexer in which the surface acoustic wave resonator is used 有权表面声波谐振器，表面声波滤波器和使用声表面波谐振器的天线双工器公开(公告)号：US07965155B2
公开(公告)日：2011-06-21
申请号：US12094324
申请日：2007-12-14
CPC分类号： H03H9/1452 , H03H9/02858 , H03H9/02881 , H03H9/02992
摘要： The present invention provides a surface acoustic wave resonator capable of improving a leak of a surface acoustic wave in the transverse direction and reducing the spurious and having superior characteristics. In a surface acoustic wave filter according to the present invention, an interdigital transducer electrode and reflector electrodes are formed on a piezoelectric substrate, and a SiO2 thin film is formed on at least a portion of the interdigital transducer electrode. The interdigital transducer electrode includes a bus-bar electrode region, a dummy electrode region and a finger overlap region, such that the SiO2 thin film is removed from upper sections of the bus-bar electrode regions of the interdigital transducer electrode.
摘要翻译： 本发明提供一种表面声波谐振器，其能够改善横向声表面波的泄漏并减少杂散并具有优异的特性。 在根据本发明的表面声波滤波器中，在压电基板上形成叉指式换能器电极和反射器电极，在交叉指型换能器电极的至少一部分上形成SiO 2薄膜。 叉指式换能器电极包括母线电极区域，虚拟电极区域和手指重叠区域，从而从指叉式换能器电极的汇流条电极区域的上部去除SiO 2薄膜。
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7.发明申请SURFACE ACOUSTIC WAVE RESONATOR, AND SURFACE ACOUSTIC WAVE FILTER AND ANTENNA DUPLEXER IN WHICH THE SURFACE ACOUSTIC WAVE RESONATOR IS USED 有权表面声波谐波器，表面声波滤波器和使用表面声波谐振器的天线双工器公开(公告)号：US20100219905A1
公开(公告)日：2010-09-02
申请号：US12094324
申请日：2007-12-14
IPC分类号： H03H9/17
CPC分类号： H03H9/1452 , H03H9/02858 , H03H9/02881 , H03H9/02992
摘要： The present invention provides a surface acoustic wave resonator capable of improving the leak of a surface acoustic wave in the transverse direction and reducing the spurious and having superior characteristics. In a surface acoustic wave filter according to the present invention, an interdigital transducer electrode and reflector electrodes are formed on a piezoelectric substrate, and a SiO2 thin film is further formed thereon. The interdigital transducer electrode includes a bus-bar electrode region, a dummy electrode region and a finger overlap region, and the SiO2 thin film is removed from upper sections of the bus-bar electrode regions in the interdigital transducer electrode.
摘要翻译： 本发明提供一种表面声波谐振器，其能够改善横向声表面波的泄漏并减少杂散并具有优异的特性。 在根据本发明的表面声波滤波器中，在压电基板上形成叉指式换能器电极和反射器电极，并且还在其上形成SiO 2薄膜。 叉指式换能器电极包括汇流条电极区域，虚拟电极区域和手指重叠区域，并且从叉指电极区域的指示电极区域的上部去除SiO 2薄膜。
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公开(公告)号：US20070152774A1
公开(公告)日：2007-07-05
申请号：US10587240
申请日：2005-02-02
CPC分类号： H03H3/02 , H03H9/6433
摘要： A plurality of surface acoustic wave resonators (15through 20) including a comb electrode and a grating reflector are coupled on piezoelectric substrate (12). Dielectric film (14) is formed on the surface of at least one surface acoustic wave resonator, of surface acoustic wave resonators (15 through 20). No dielectric film (14) is formed on the surface of at least another surface acoustic wave resonator. Thus, an SAW filter where the insertion loss into a band is small, the steepness is sufficient, and the band is wide can be obtained.
摘要翻译： 包括梳状电极和光栅反射器的多个表面声波谐振器（15至20）耦合在压电基片（12）上。 在表面声波谐振器（15〜20）的至少一个表面声波谐振器的表面上形成介质膜（14）。 在至少另一声表面波谐振器的表面上不形成绝缘膜（14）。 因此，在带内的插入损耗小的情况下，陡度足够，能够获得宽带的SAW滤波器。
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9.发明授权Surface acoustic wave device, and mobile communication device and sensor both using same 有权表面声波装置，以及移动通信装置和传感器都采用相同的方式公开(公告)号：US07109828B2
公开(公告)日：2006-09-19
申请号：US10482442
申请日：2003-04-14
CPC分类号： H03H9/25 , H03H9/02559 , H03H9/02661 , H03H9/02929 , H03H9/145 , H03H9/6483
摘要： In a surface acoustic wave (SAW) device, such as a SAW resonator or a SAW filter, loss is minimized and steep characteristics are improved. IDT electrodes and a reflector are provided to a piezoelectric substrate cut out at a cut-angle which allows the substrate to excite a leaky surface acoustic wave (LSAW). The IDT electrodes have a given film thickness and a given pitch “p” of finger-electrodes. A phase velocity of the SAW is reduced to slower than a phase velocity “vb”of a slow shear wave propagating on the piezoelectric substrate, and a resonance frequency “f” satisfies a relation of 2×p≦vb/f. This structure allows the use of a Rayleigh surface acoustic wave (RSAW) which does not produce propagation loss, and improving insertion-loss and steep characteristics from those of a conventional SAW device using the LSAW.
摘要翻译： 在诸如SAW谐振器或SAW滤波器的表面声波（SAW）器件中，损耗最小化并且提高了陡峭的特性。 IDT电极和反射器被提供给以切割角度切割的压电基板，该基板允许基板激发泄漏的表面声波（LSAW）。 IDT电极具有给定的膜厚度和指状电极的给定间距“p”。 SAW的相速度比在压电基板上传播的慢剪切波的相速度“vb”慢，共振频率“f”满足2pp = vb / f的关系。 该结构允许使用不产生传播损耗的瑞利声表面波（RSAW），并且使用使用LSAW的常规SAW器件的那些改善插入损耗和陡峭特性。
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10.发明授权公开(公告)号：US06909341B2
公开(公告)日：2005-06-21
申请号：US10168284
申请日：2001-10-23
CPC分类号： H03H9/02661 , H03H3/08 , H03H9/02897 , H03H9/02929 , H03H9/14541 , Y10T29/42
摘要： In a surface acoustic wave (SAW) filter including a substrate and an electrode formed on the substrate, the electrode includes a base layer, a first metal layer made of a metal consisting of Al or consisting mainly of Al, and having a given orientation relative to the substrate, a second layer for preventing the first metal layer from migration of Al atoms occurring in vertical to the substrate, and a third layer for adjusting a thickness of the layer. In this SAW filter having an arbitrary layer thickness, the layer hardly causes grain boundary diffusion, and grains of the layer can be made fine for effective resistance to stress. Thus, in this SAW filter, the migration of the Al atoms of the electrode that is associated with the SAW propagation-induced stress imposed on the electrode is inhibited. Accordingly, the filter exhibits excellent resistance against electric power.
摘要翻译： 在包括基板和形成在基板上的电极的表面声波（SAW）滤波器中，电极包括基底层，由Al组成的金属或主要由Al组成的金属构成的第一金属层，并且具有给定的取向相对 向基板施加用于防止第一金属层垂直于基板发生的Al原子迁移的第二层，以及用于调整该层厚度的第三层。 在具有任意层厚度的SAW滤波器中，该层几乎不引起晶界扩散，并且可以使该层的晶粒细微地产生有效的抗应力。 因此，在这种SAW滤波器中，与施加在电极上的SAW传播引起的应力有关的电极的Al原子的迁移被抑制。 因此，过滤器表现出优异的电力抵抗性。
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