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公开(公告)号：US11417825B2
公开(公告)日：2022-08-16
申请号：US16462379
申请日：2017-11-07
申请人： MURATA MANUFACTURING CO., LTD. , KANSAI UNIVERSITY , Panasonic Intellectual Property Management Co., Ltd.
IPC分类号： H01L41/193 , H01L41/083 , G01L1/16 , H01L41/047 , H01L41/113 , H02N2/18
摘要： Provided is a piezoelectric laminate element that outputs a fixed output voltage even in response to a static load for which an output voltage could not be obtained using a conventional piezoelectric element. A piezoelectric laminate body in which a plurality of piezoelectric polymer film layers consisting of film such as polylactic acid film that exhibits piezoelectricity in the planar direction are laminated is used as a piezoelectric laminate element. The piezoelectric laminate body is given a cylindrical shape, rounded rectangle shape, or other partially curved shape. The output voltage follows the increase and decrease of the applied load, and if a fixed load is continuously applied, a fixed output voltage is continuously output, and a piezoelectric laminate element is obtained that outputs a fixed output voltage even if a load is static.
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公开(公告)号：US20130108061A1
公开(公告)日：2013-05-02
申请号：US13721098
申请日：2012-12-20
IPC分类号： H01L41/04
CPC分类号： H01L41/042 , G06F3/0414 , G06F3/0433 , H01L41/0973 , H01L41/193 , H04R17/00
摘要： A piezoelectric device is provided with a sound source IC, an amplifier for amplifying a sound source from the sound source IC, a piezoelectric speaker for generating sound based on a drive signal from amplifier, an MPU for performing a predetermined control process on the drive signal, a memory for storing temperature dependency information about the piezoelectric constant (d14) and Young's modulus E of the piezoelectric speaker, and a temperature sensor for detecting an ambient temperature. MPU has correcting unit, compares a detected result of the temperature sensor with the temperature dependency information, and performs temperature correction on the drive signal serving as an acoustic signal based on a compared result. The piezoelectric speaker outputs the acoustic signal temperature-corrected by correcting unit. Thus, it becomes possible to realize various piezoelectric devices, such as a piezoelectric speaker system, capable of preventing various input information from fluctuating even when there is a change in usage environmental temperature.
摘要翻译： 压电装置设置有声源IC，用于放大来自声源IC的声源的放大器，用于根据来自放大器的驱动信号产生声音的压电扬声器，用于对驱动信号执行预定控制处理的MPU ，用于存储关于压电扬声器的压电常数（d14）和杨氏模量E的温度依赖性信息的存储器和用于检测环境温度的温度传感器。 MPU具有校正单元，将温度传感器的检测结果与温度依赖性信息进行比较，并且基于比较结果对作为声信号的驱动信号进行温度校正。 压电扬声器通过校正单元输出温度校正的声信号。 因此，即使当使用环境温度发生变化时，也可以实现能够防止各种输入信息波动的诸如压电扬声器系统的各种压电装置。
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公开(公告)号：US09804041B2
公开(公告)日：2017-10-31
申请号：US14549612
申请日：2014-11-21
发明人： Yoshiro Tajitsu , Masamichi Ando
IPC分类号： G01L1/04 , G01L1/16 , G06F3/041 , H01L41/193 , H01L41/113 , H01L41/053
CPC分类号： G01L1/16 , G06F3/041 , G06F2203/04105 , H01L41/0533 , H01L41/1132 , H01L41/193
摘要： A sensor device that includes a film composed of, for example, PLLA; and electrodes for extracting an output voltage from the PLLA film. The electrodes are located on main surfaces of the PLLA film such that the electrodes face each other with at least a portion of the PLLA film being interposed therebetween. The PLLA film has a first side which is fixed, and a second side which is opposite to the first side and is a movable portion. Each of the electrodes is configured to extract an output voltage resulting from an effect of piezoelectric constant d14 provided by shear deformation caused by displacement of the movable portion in a direction parallel to the main surfaces of the PLLA film, whereby an operation involving friction or the like can be sensed.
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4.发明授权公开(公告)号：US09048426B2
公开(公告)日：2015-06-02
申请号：US13865436
申请日：2013-04-18
发明人： Masamichi Ando , Yoshiro Tajitsu
IPC分类号： H01L41/45 , H01L41/193 , H01L41/257 , B29C35/08
CPC分类号： H01L41/193 , B29C2035/0855 , H01L41/253 , H01L41/257 , H01L41/45 , Y10T29/42
摘要： A specific region of a polylactic acid sheet is heated by a microwave. To allow the polylactic acid sheet to exhibit piezoelectricity in the thickness direction of the polylactic acid sheet, a high voltage is applied to the heated polylactic acid sheet in the thickness direction of the polylactic acid sheet, and thereby the screw axes of at least a part of the polylactic acid molecules are relatively aligned with the thickness direction. Then the polylactic acid sheet is rapidly cooled, and thereby the polylactic acid molecules are immobilized. The same step is executed for other regions of the polylactic acid sheet, and thereby piezoelectricity is imparted to a wide area of the polylactic acid sheet in the thickness direction. The resultant piezoelectric sheet is capable of exhibiting a high piezoelectricity in the thickness direction.
摘要翻译： 通过微波加热聚乳酸片的特定区域。 为了使聚乳酸薄片在聚乳酸薄片的厚度方向上具有压电性，在聚乳酸薄片的厚度方向上对加热的聚乳酸薄片施加高电压，从而将至少一部分的螺杆轴 的聚乳酸分子与厚度方向相对地排列。 然后将聚乳酸薄片快速冷却，从而固定聚乳酸分子。 对聚乳酸片的其它区域进行相同的步骤，从而在厚度方向上赋予聚乳酸片的广泛面积的压电性。 所得的压电片材能够在厚度方向上表现出高的压电性。
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5.发明申请公开(公告)号：US20130228463A1
公开(公告)日：2013-09-05
申请号：US13865436
申请日：2013-04-18
发明人： Masamichi Ando , Yoshiro Tajitsu
IPC分类号： H01L41/193
CPC分类号： H01L41/193 , B29C2035/0855 , H01L41/253 , H01L41/257 , H01L41/45 , Y10T29/42
摘要： A specific region of a polylactic acid sheet is heated by a microwave. To allow the polylactic acid sheet to exhibit piezoelectricity in the thickness direction of the polylactic acid sheet, a high voltage is applied to the heated polylactic acid sheet in the thickness direction of the polylactic acid sheet, and thereby the screw axes of at least a part of the polylactic acid molecules are relatively aligned with the thickness direction. Then the polylactic acid sheet is rapidly cooled, and thereby the polylactic acid molecules are immobilized. The same step is executed for other regions of the polylactic acid sheet, and thereby piezoelectricity is imparted to a wide area of the polylactic acid sheet in the thickness direction. The resultant piezoelectric sheet is capable of exhibiting a high piezoelectricity in the thickness direction.
摘要翻译： 通过微波加热聚乳酸片的特定区域。 为了使聚乳酸薄片在聚乳酸薄片的厚度方向上具有压电性，在聚乳酸薄片的厚度方向上对加热的聚乳酸薄片施加高电压，从而将至少一部分的螺杆轴 的聚乳酸分子与厚度方向相对地排列。 然后将聚乳酸薄片快速冷却，从而固定聚乳酸分子。 对聚乳酸片的其它区域进行相同的步骤，从而在厚度方向上赋予聚乳酸片的广泛面积的压电性。 所得的压电片材能够在厚度方向上表现出高的压电性。
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6.发明申请公开(公告)号：US20130057499A1
公开(公告)日：2013-03-07
申请号：US13668487
申请日：2012-11-05
IPC分类号： G06F3/041
CPC分类号： G06F3/0433 , G06F3/038 , G06F3/041 , G06F3/0414 , G06F2203/04104 , G09G5/003 , G09G2300/0404
摘要： A touch panel capable of detecting a pen and a finger, capable of corresponding to multi-touch, capable of detecting pressing force, and capable of reducing the use amount of a transparent electrode as much as possible. The touch panel has a piezoelectric sheet of poly-L-lactic acid having a predetermined stretching axial direction, electrodes that are opposed to each other and formed on the piezoelectric sheet do not cover the entire surface of the piezoelectric sheet and are formed so that they are discretely distributed in plural positions. The piezoelectric sheet is brought into the condition that tension is imparted in directions not coincident with the stretching axial direction.
摘要翻译： 能够检测能够检测按压力并且能够尽可能地减少透明电极的使用量的能够对应于多点触摸的笔和手指的触摸面板。 触摸面板具有预定的拉伸轴向的聚-L-乳酸的压电片，形成在压电片上的彼此相对的电极不覆盖压电片的整个表面，并且形成为使得它们 离散地分布在多个位置。 使压电片处于与拉伸轴向不一致的方向施加张力的状态。
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公开(公告)号：US09276191B2
公开(公告)日：2016-03-01
申请号：US13721098
申请日：2012-12-20
CPC分类号： H01L41/042 , G06F3/0414 , G06F3/0433 , H01L41/0973 , H01L41/193 , H04R17/00
摘要： A piezoelectric device is provided with a sound source IC, an amplifier for amplifying a sound source from the sound source IC, a piezoelectric speaker for generating sound based on a drive signal from amplifier, an MPU for performing a predetermined control process on the drive signal, a memory for storing temperature dependency information about the piezoelectric constant (d14) and Young's modulus E of the piezoelectric speaker, and a temperature sensor for detecting an ambient temperature. MPU has correcting unit, compares a detected result of the temperature sensor with the temperature dependency information, and performs temperature correction on the drive signal serving as an acoustic signal based on a compared result. The piezoelectric speaker outputs the acoustic signal temperature-corrected by correcting unit. Thus, it becomes possible to realize various piezoelectric devices, such as a piezoelectric speaker system, capable of preventing various input information from fluctuating even when there is a change in usage environmental temperature.
摘要翻译： 压电装置设置有声源IC，用于放大来自声源IC的声源的放大器，用于根据来自放大器的驱动信号产生声音的压电扬声器，用于对驱动信号执行预定控制处理的MPU ，用于存储关于压电扬声器的压电常数（d14）和杨氏模量E的温度依赖性信息的存储器和用于检测环境温度的温度传感器。 MPU具有校正单元，将温度传感器的检测结果与温度依赖性信息进行比较，并且基于比较结果对作为声信号的驱动信号进行温度校正。 压电扬声器通过校正单元输出温度校正的声信号。 因此，即使当使用环境温度发生变化时，也可以实现能够防止各种输入信息波动的诸如压电扬声器系统的各种压电装置。
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8.发明申请公开(公告)号：US20150261337A1
公开(公告)日：2015-09-17
申请号：US14729122
申请日：2015-06-03
CPC分类号： G06F3/0433 , G06F3/038 , G06F3/041 , G06F3/0414 , G06F2203/04104 , G09G5/003 , G09G2300/0404
摘要： A touch panel capable of detecting a pen and a finger, capable of corresponding to multi-touch, capable of detecting pressing force, and capable of reducing the use amount of a transparent electrode as much as possible. The touch panel has a piezoelectric sheet of poly-L-lactic acid having a predetermined stretching axial direction, electrodes that are opposed to each other and formed on the piezoelectric sheet do not cover the entire surface of the piezoelectric sheet and are formed so that they are discretely distributed in plural positions. The piezoelectric sheet is brought into the condition that tension is imparted in directions not coincident with the stretching axial direction.
摘要翻译： 能够检测能够检测按压力并且能够尽可能地减少透明电极的使用量的能够对应于多点触摸的笔和手指的触摸面板。 触摸面板具有预定的拉伸轴向的聚-L-乳酸的压电片，形成在压电片上的彼此相对的电极不覆盖压电片的整个表面，并且形成为使得它们 离散地分布在多个位置。 使压电片处于与拉伸轴向不一致的方向施加张力的状态。
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公开(公告)号：US20150168237A1
公开(公告)日：2015-06-18
申请号：US14549612
申请日：2014-11-21
发明人： Yoshiro Tajitsu , Masamichi Ando
IPC分类号： G01L1/16
CPC分类号： G01L1/16 , G06F3/041 , G06F2203/04105 , H01L41/0533 , H01L41/1132 , H01L41/193
摘要： A sensor device that includes a film composed of, for example, PLLA; and electrodes for extracting an output voltage from the PLLA film. The electrodes are located on main surfaces of the PLLA film such that the electrodes face each other with at least a portion of the PLLA film being interposed therebetween. The PLLA film has a first side which is fixed, and a second side which is opposite to the first side and is a movable portion. Each of the electrodes is configured to extract an output voltage resulting from an effect of piezoelectric constant d14 provided by shear deformation caused by displacement of the movable portion in a direction parallel to the main surfaces of the PLLA film, whereby an operation involving friction or the like can be sensed.
摘要翻译： 一种传感器装置，其包括由例如PLLA构成的膜; 以及用于从PLLA膜提取输出电压的电极。 电极位于PLLA膜的主表面上，使得电极彼此面对，其中PLLA膜的至少一部分介于它们之间。 PLLA膜具有固定的第一侧和与第一侧相对的第二侧，并且是可动部。 每个电极被配置为提取由压电常数d14产生的输出电压，该压电常数d14由平行于PLLA膜的主表面的方向上的可移动部分的位移引起的剪切变形提供，由此涉及摩擦或 像可以感觉到。
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公开(公告)号：US09417737B2
公开(公告)日：2016-08-16
申请号：US14729122
申请日：2015-06-03
CPC分类号： G06F3/0433 , G06F3/038 , G06F3/041 , G06F3/0414 , G06F2203/04104 , G09G5/003 , G09G2300/0404
摘要： A touch panel capable of detecting a pen and a finger, capable of corresponding to multi-touch, capable of detecting pressing force, and capable of reducing the use amount of a transparent electrode as much as possible. The touch panel has a piezoelectric sheet of poly-L-lactic acid having a predetermined stretching axial direction, electrodes that are opposed to each other and formed on the piezoelectric sheet do not cover the entire surface of the piezoelectric sheet and are formed so that they are discretely distributed in plural positions. The piezoelectric sheet is brought into the condition that tension is imparted in directions not coincident with the stretching axial direction.
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