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公开(公告)号：US07385468B2
公开(公告)日：2008-06-10
申请号：US11019387
申请日：2004-12-23
申请人： Hiroyuki Furusato , Osamu Kawachi
发明人： Hiroyuki Furusato , Osamu Kawachi
IPC分类号： H03H9/64
CPC分类号： H03H9/6483 , H03H9/02921
摘要： Surface acoustic wave (SAW) filter includes SAW resonators, a discharge induction pattern is provided between a ground and at least one of a signal input terminal and a signal output terminal, and the discharge induction pattern has multiple gaps that are narrower than gaps that exist inside electrode patterns of the SAW resonators. Since the discharge induction pattern has multiple gaps that are narrower than gaps that exist inside electrode patterns of the SAW resonators, it is possible to induce the electrostatic discharge without fault. The multiple gaps are provided so as to protect the SAW resonators against multiple times of electrostatic discharge.
摘要翻译： 表面声波（SAW）滤波器包括SAW谐振器，在地与信号输入端和信号输出端之中的至少一个之间提供放电感应图案，并且放电感应图案具有比存在的间隙窄的多个间隙 SAW谐振器的内部电极图案。 由于放电感应图案具有比存在于SAW谐振器的电极图案内的间隙窄的多个间隙，因此可以无故障地引起静电放电。 提供多个间隙以便保护SAW谐振器免受多次静电放电。
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公开(公告)号：US20050140469A1
公开(公告)日：2005-06-30
申请号：US11019387
申请日：2004-12-23
申请人： Hiroyuki Furusato , Osamu Kawachi
发明人： Hiroyuki Furusato , Osamu Kawachi
CPC分类号： H03H9/6483 , H03H9/02921
摘要： Surface acoustic wave (SAW) filter includes SAW resonators, a discharge induction pattern is provided between a ground and at least one of a signal input terminal and a signal output terminal, and the discharge induction pattern has multiple gaps that are narrower than gaps that exist inside electrode patterns of the SAW resonators. Since the discharge induction pattern has multiple gaps that are narrower than gaps that exist inside electrode patterns of the SAW resonators, it is possible to induce the electrostatic discharge without fault. The multiple gaps are provided so as to protect the SAW resonators against multiple times of electrostatic discharge.
摘要翻译： 表面声波（SAW）滤波器包括SAW谐振器，在地与信号输入端和信号输出端之中的至少一个之间提供放电感应图案，并且放电感应图案具有比存在的间隙窄的多个间隙 SAW谐振器的内部电极图案。 由于放电感应图案具有比存在于SAW谐振器的电极图案内的间隙窄的多个间隙，因此可以无故障地引起静电放电。 提供多个间隙以便保护SAW谐振器免受多次静电放电。
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公开(公告)号：US06417574B1
公开(公告)日：2002-07-09
申请号：US09635094
申请日：2000-08-09
IPC分类号： H01L2348
CPC分类号： H03H9/6469 , H01L2224/16225 , H03H9/059 , H03H9/1071 , H03H9/6483 , H03H9/725
摘要： A SAW device includes a piezoelectric substrate and a package body holding the piezoelectric substrate, wherein the package body includes a bottom part carrying the piezoelectric substrate in a face-down state and a side wall part laterally surrounding the piezoelectric substrate, the bottom part carrying a wiring pattern for electrical connection with an electrode pattern on the piezoelectric substrate, the wiring pattern including a first ground pattern and a second ground pattern in a mutually separated relationship, the first ground pattern and the second ground pattern being connected electrically with each other.
摘要翻译： SAW器件包括压电基板和保持压电基板的封装体，其中封装体包括以面朝下状态承载压电基板的底部和横向围绕压电基板的侧壁部分，底部部分承载 用于与压电基板上的电极图案电连接的布线图案，布线图案包括彼此分离关系的第一接地图案和第二接地图案，第一接地图案和第二接地图案彼此电连接。
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公开(公告)号：US07388456B2
公开(公告)日：2008-06-17
申请号：US11014164
申请日：2004-12-17
申请人： Hiroyuki Furusato , Osamu Kawachi
发明人： Hiroyuki Furusato , Osamu Kawachi
IPC分类号： H03H9/64
CPC分类号： H03H9/6469 , H03H9/0061 , H03H9/02921 , H03H9/6483
摘要： A SAW filter includes multiple SAW resonators. The multiple SAW resonators, which are connected in series, are connected any one of between a signal input terminal and a ground that is the closest thereto and between a signal output terminal and another ground that is the closest thereto. The SAW resonators have substantially equal electrostatic capacitances. It is thus possible to protect the SAW resonators without providing a sacrificial electrode for electrostatic breakdown, and thereby possible to configure the SAW filter having a high reliability against the electrostatic discharge.
摘要翻译： SAW滤波器包括多个SAW谐振器。 串联连接的多个SAW谐振器连接在信号输入端子与最靠近的信号输入端子与信号输出端子与最靠近的接地端子之间的任何一个。 SAW谐振器具有基本相等的静电电容。 因此，可以在不设置用于静电击穿的牺牲电极的情况下保护SAW谐振器，并且由此可以配置具有高静电放电可靠性的SAW滤波器。
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公开(公告)号：US20050151601A1
公开(公告)日：2005-07-14
申请号：US11014164
申请日：2004-12-17
申请人： Hiroyuki Furusato , Osamu Kawachi
发明人： Hiroyuki Furusato , Osamu Kawachi
CPC分类号： H03H9/6469 , H03H9/0061 , H03H9/02921 , H03H9/6483
摘要： A SAW filter includes multiple SAW resonators. The multiple SAW resonators, which are connected in series, are connected any one of between a signal input terminal and a ground that is the closest thereto and between a signal output terminal and another ground that is the closest thereto. The SAW resonators have substantially equal electrostatic capacitances. It is thus possible to protect the SAW resonators without providing a sacrificial electrode for electrostatic breakdown, and thereby possible to configure the SAW filter having a high reliability against the electrostatic discharge.
摘要翻译： SAW滤波器包括多个SAW谐振器。 串联连接的多个SAW谐振器连接在信号输入端子与最靠近的信号输入端子与信号输出端子与最靠近的接地端子之间的任何一个。 SAW谐振器具有基本相等的静电电容。 因此，可以在不设置用于静电击穿的牺牲电极的情况下保护SAW谐振器，并且由此可以配置具有高静电放电可靠性的SAW滤波器。
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公开(公告)号：US06469593B2
公开(公告)日：2002-10-22
申请号：US09757490
申请日：2001-01-11
IPC分类号： H03H964
CPC分类号： H03H9/6436 , H03H9/0061 , H03H9/0576 , H03H9/08 , H03H9/1071 , H03H9/6469 , H03H9/72 , H03H9/725 , H03H2250/00
摘要： A surface acoustic wave device includes a package having a coefficient of linear expansion; and a piezoelectric element forming a surface acoustic wave element, and mounted on the package by a flip chip bonding. The piezoelectric element has different coefficients of linear expansion in a direction of propagation of surface acoustic waves generated by an interdigital electrode of the surface acoustic wave element and in a vertical direction thereto, and further has a long side existing to a direction having a coefficient of linear expansion close to the coefficient of linear expansion of the package. The piezoelectric element is cut out from a single crystal having X, Y, and Z crystal axes, and the X crystal axis agrees with a direction of propagation of the surface acoustic wave.
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