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1. 发明授权

US07042138B2 Piezoelectric acoustic transducer 失效
标题翻译：压电声换能器
公开(公告)号：US07042138B2
公开(公告)日：2006-05-09
申请号：US10764568
申请日：2004-01-27
申请人： Yuko Yokoi , Kiyotaka Tajima , Manabu Sumita
发明人： Yuko Yokoi , Kiyotaka Tajima , Manabu Sumita
IPC分类号： H01L41/08
CPC分类号： H04R17/00
摘要： A piezoelectric type electroacoustic transducer includes a piezoelectric vibrating plate including a plurality of piezoelectric ceramic layers laminated to each other with an internal electrode being interposed between the piezoelectric ceramic layers, and main surface electrodes disposed on the main surfaces on the front and back sides of the piezoelectric vibrating plate, whereby the piezoelectric vibrating plate is surface-flexural-vibrated in the thickness direction thereof with an AC signal applied between the main surface electrodes and the internal electrode, and a box having supporting portions on which the outer peripheral portions on the back side of the piezoelectric vibrating plate is supported, the piezoelectric vibrating plate having a protecting film substantially on the entire surface on the back-side only or on the front and back sides of the piezoelectric vibrating plate, and the protecting film being formed by applying a resin in a film-shape and hardening the resin, or by bonding an adhesive sheet and hardening the sheet, and the piezoelectric vibrating plate being warped on the front-side thereof by utilization of the hardening shrink stresses of the protecting films.
摘要翻译：一种压电式电声换能器，包括压电振动板，其包括彼此层压的多个压电陶瓷层，其中内部电极介于压电陶瓷层之间，主表面电极设置在主表面电极的正面和背面压电振动板，其中压电振动板在其主表面电极和内部电极之间施加有交流信号，在其厚度方向上进行表面弯曲振动，并且具有支撑部分的盒体，背面上的外周部分压电振动板的一侧被支撑，所述压电振动板在压电振动板的背面侧或前后两侧的整个表面上具有保护膜，保护膜通过施加树脂呈薄膜形状并硬化树脂，或通过粘合粘合片并硬化片材，并且压电振动板通过利用保护膜的硬化收缩应力而在其正面翘曲。

2. 发明授权

US06744180B2 Piezoelectric electroacoustic transducer 有权
标题翻译：压电式电声换能器
公开(公告)号：US06744180B2
公开(公告)日：2004-06-01
申请号：US10270696
申请日：2002-10-16
申请人： Yoshitaka Nakamura , Kiyotaka Tajima , Tetsuo Takeshima , Yuko Yokoi , Tadashi Okuzawa
发明人： Yoshitaka Nakamura , Kiyotaka Tajima , Tetsuo Takeshima , Yuko Yokoi , Tadashi Okuzawa
IPC分类号： H01L41053
CPC分类号： H04R17/00
摘要： A piezoelectric electroacoustic transducer includes two electrodes, a substantially square piezoelectric diaphragm producing a bending vibration in the thickness direction thereof in response to application of an alternating voltage between the two electrodes, a housing for housing the piezoelectric diaphragm, an elastic sealant for sealing the gap between the periphery of the diaphragm and the inner side surface of the housing, supports, disposed in the housing, for supporting at least two mutually opposing sides of the piezoelectric diaphragm or the four corners of the piezoelectric diaphragm, grooves which are disposed in the housing so as to face the periphery of the rear surface of the piezoelectric diaphragm and in which the elastic sealant is filled, and walls defining inner portions of the grooves, arranged such that the upper surfaces of the walls are located below those of the supports, for preventing the elastic sealant from flowing out to the bottom of the housing.
摘要翻译：压电电声换能器包括两个电极，一个基本上为方形的压电隔膜，响应于在两个电极之间施加交流电压而产生其厚度方向上的弯曲振动，一个用于容纳压电隔膜的壳体，用于密封间隙的弹性密封剂在隔膜的周边和壳体的内侧表面之间，支撑件设置在壳体中，用于支撑压电隔膜的至少两个彼此相对的侧面或压电隔膜的四个角部，凹槽设置在壳体以面对压电振动板的后表面的周边，并且其中填充弹性密封剂，以及限定凹槽内部的壁布置成使得壁的上表面位于支撑体的上表面之下，以便防止弹性密封剂流出到壳体的底部。

3. 发明授权

US06700302B1 Piezoelectric resonator 有权
标题翻译：压电谐振器
公开(公告)号：US06700302B1
公开(公告)日：2004-03-02
申请号：US09620539
申请日：2000-07-22
申请人： Takashi Yamamoto , Yuko Yokoi
发明人： Takashi Yamamoto , Yuko Yokoi
IPC分类号： H01L4108
CPC分类号： H03H9/178 , H03H9/1028
摘要： A piezoelectric resonator includes an internal electrode sandwiched between two layers of ceramic piezoelectric substrates each having a substantially square shape. Surface electrodes are arranged on the front surface and the back surface of the piezoelectric substrate. Both of the piezoelectric substrates are polarization-treated in the substantially perpendicular direction relative to the main surfaces and in the opposite directions with respect to the sandwiched internal electrode. When a signal voltage is applied across the surface electrodes, the piezoelectric resonator is bending-deformed so as to become convex on one side of the main surfaces and become concave on the other side thereof.
摘要翻译：压电谐振器包括夹在两层陶瓷压电基片之间的内部电极，每个陶瓷压电基片均具有大致正方形的形状。表面电极配置在压电基板的表面和背面。两个压电基板相对于主表面和相对于夹着的内部电极的相反方向在大致垂直的方向上被极化处理。当跨越表面电极施加信号电压时，压电谐振器被弯曲变形，从而在主表面的一侧变为凸形，并在其另一侧变为凹陷。

4. 发明授权

US06297581B1 Piezoelectric element and electronic component including same 失效
标题翻译：压电元件和包括其的电子元件
公开(公告)号：US06297581B1
公开(公告)日：2001-10-02
申请号：US09138688
申请日：1998-08-24
申请人： Yuko Yokoi
发明人： Yuko Yokoi
IPC分类号： H01L4108
CPC分类号： H03H9/562 , H03H9/02157
摘要： A piezoelectric element vibrating in a longitudinal vibration mode includes external electrodes which are provided on front and back major surfaces of a piezoelectric substrate. Conductive sections are fixed onto nodal portions of the piezoelectric element on one of the major surfaces of the piezoelectric substrate. The piezoelectric element is constructed such that a relationship T1/T is set at about 0.5 or less and a relationship L1/L is set at about 0.2 or less, where a thickness and a length of the piezoelectric element are T and L, respectively, and a thickness and a length of the support sections are T1 and L1, respectively.
摘要翻译：以纵向振动模式振动的压电元件包括设置在压电基板的前后表面上的外部电极。导电部分固定在压电元件的一个主表面上的压电元件的节点部分上。压电元件被构造成使得关系T1 / T设定为约0.5或更小，并且关系L1 / L设定为约0.2或更小，其中压电元件的厚度和长度分别为T和L，并且支撑部分的厚度和长度分别为T1和L1。

5. 发明授权

US06268684B1 Piezoelectric resonator and a piezoelectric component including piezoelectric resonator 失效
标题翻译：压电谐振器和包括压电谐振器的压电元件
公开(公告)号：US06268684B1
公开(公告)日：2001-07-31
申请号：US09397838
申请日：1999-09-16
申请人： Yuko Yokoi
发明人： Yuko Yokoi
IPC分类号： H01L4108
CPC分类号： H03H9/562 , H03H9/1014
摘要： A piezoelectric resonator includes a substantially rectangular shaped piezoelectric substrate having a pair of major surfaces and polarized in the thickness direction thereof and a pair of electrodes respectively disposed on the pair of major surfaces of the piezoelectric substrate. One of the electrodes is multiply divided along a dividing line which extends along the longitudinal direction of the piezoelectric substrate. The piezoelectric substrate is polarized such that two portions of the piezoelectric substrate sandwiching the dividing line are polarized in opposite directions.
摘要翻译：压电谐振器包括具有一对主表面并在其厚度方向上极化的大致矩形的压电基片和分别设置在压电基片的一对主表面上的一对电极。其中一个电极沿着沿着压电基板的纵向方向延伸的分割线进行多重分割。压电基板被极化，使得夹着分割线的压电基板的两个部分在相反的方向上极化。

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