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1. 发明公开

US20230232164A1 ROLLABLE ELECTROACOUSTIC TRANSDUCER AND ROLLABLE IMAGE DISPLAY DEVICE 审中-公开
公开(公告)号：US20230232164A1
公开(公告)日：2023-07-20
申请号：US18189495
申请日：2023-03-24
申请人： FUJIFILM Corporation
发明人： Tetsu Miyoshi
IPC分类号： H04R17/00 , H04R1/06
CPC分类号： H04R17/00 , H04R1/06 , H04R2499/15
摘要： An object of the present invention is to provide an electroacoustic transducer and an image display device, each of which can be rolled up and does not need a mechanical mechanism and a driving source. The object is accomplished by providing a vibration plate or display element which can be rolled up, and a convex leaf spring having an arc-shaped cross section in the lateral direction and having a concave side disposed facing one surface of the vibration plate or a non-image-displaying surface of the display element.

2. 发明授权

US11140500B2 Electroacoustic transduction film and manufacturing method thereof, electroacoustic transducer, flexible display, vocal cord microphone, sensor for musical instrument 有权
公开(公告)号：US11140500B2
公开(公告)日：2021-10-05
申请号：US15868146
申请日：2018-01-11
申请人： FUJIFILM Corporation
发明人： Naoki Murakami , Tetsu Miyoshi
IPC分类号： H04R31/00 , H04R1/46 , H04R17/02 , H04R17/00 , H04R7/10 , H01L41/18 , H01L41/257 , G10H3/14
摘要： Provided are an electroacoustic transduction film capable of reproducing a sound with a sufficient sound volume at a high conversion efficiency, a manufacturing method thereof, an electroacoustic transducer, a flexible display, a vocal cord microphone, and a sensor for a musical instrument. The electroacoustic transduction film includes: a polymer composite piezoelectric body in which piezoelectric body particles are dispersed in a viscoelastic matrix formed of a polymer material having viscoelasticity at a normal temperature; two thin film electrodes laminated on both surfaces of the polymer composite piezoelectric body; and two protective layers respectively laminated on the two thin film electrodes, in which an intensity ratio α1=(002) plane peak intensity/((002) plane peak intensity+(200) plane peak intensity) between a (002) plane peak intensity and a (200) plane peak intensity derived from the piezoelectric body particles in a case where the polymer composite piezoelectric body is evaluated by an X-ray diffraction method is more than or equal to 0.6 and less than 1.

3. 发明授权

US09440259B2 Electroacoustic conversion film, electroacoustic converter, flexible display, and projector screen 有权
标题翻译：电声转换膜，电声转换器，柔性显示屏和投影屏
公开(公告)号：US09440259B2
公开(公告)日：2016-09-13
申请号：US14860944
申请日：2015-09-22
申请人： FUJIFILM Corporation
发明人： Tetsu Miyoshi
IPC分类号： B06B1/06 , H04R17/00 , H01L41/047 , H04R7/04 , H01L41/37 , H01L41/09 , H01L41/18 , G03B21/56 , H04R17/02 , H01L41/257 , H04R5/02 , G10K11/178
CPC分类号： B06B1/0662 , B06B1/0688 , G03B21/56 , G03B31/00 , G10K11/178 , G10K2210/3229 , H01L41/047 , H01L41/0475 , H01L41/0973 , H01L41/183 , H01L41/257 , H01L41/37 , H04R5/02 , H04R7/04 , H04R17/005 , H04R17/025 , H04R2217/03 , H04R2307/025 , H04R2499/15
摘要： The present invention provides an electroacoustic conversion film comprising: a polymeric composite piezoelectric body in which piezoelectric body particles are dispersed in a viscoelastic matrix formed of a polymer material exhibiting viscoelasticity at normal temperature; and two or more electrode pairs, wherein one electrode and the other electrode of each of the electrode pairs are arranged on two opposite main surfaces of the polymeric composite piezoelectric body, respectively, to interpose the polymeric composite piezoelectric body therebetween, and thereby each of the electrode pairs forms an active region.
摘要翻译：本发明提供一种电声转换膜，包括：聚合物复合压电体，其中压电体颗粒分散在由在常温下显示出粘弹性的聚合物材料形成的粘弹性基体中; 和两个或更多个电极对，其中每个电极对的一个电极和另一个电极分别布置在聚合物复合压电体的两个相对的主表面上，以将聚合物复合压电体插入其间，电极对形成有源区。

4. 外观设计

USD731460S1 Speaker 有权
公开(公告)号：USD731460S1
公开(公告)日：2015-06-09
申请号：US29460503
申请日：2013-07-11
申请人： FUJIFILM CORPORATION
设计人： Tetsu Miyoshi , Samito Nakamura

5. 发明授权

US10091586B2 Electroacoustic transduction film and electroacoustic transducer 有权
公开(公告)号：US10091586B2
公开(公告)日：2018-10-02
申请号：US15841617
申请日：2017-12-14
申请人： FUJIFILM Corporation
发明人： Shin Ozawa , Daisuke Inoue , Tetsu Miyoshi
IPC分类号： H01L41/09 , H01L41/047 , H01L41/18 , H04R17/00 , H01L41/053
摘要： Provided are an electroacoustic transduction film and an electroacoustic transducer capable of reproducing a sound with a sufficient sound volume and preventing deterioration of appearance. The electroacoustic transduction film includes: a polymer composite piezoelectric body in which piezoelectric body particles are dispersed in a viscoelastic matrix formed of a polymer material having viscoelasticity at a normal temperature; a lower thin film electrode laminated on one principal surface of the polymer composite piezoelectric body; a lower protective layer laminated on the lower thin film electrode; an upper thin film electrode formed on the other principal surface of the polymer composite piezoelectric body; an upper protective layer laminated on the upper thin film electrode; and a colored layer laminated on at least one of a surface layer side of the upper thin film electrode and a surface layer side of the lower thin film electrode.

6. 发明授权

US09973858B2 Electro-acoustic conversion film and digital speaker 有权
公开(公告)号：US09973858B2
公开(公告)日：2018-05-15
申请号：US15394387
申请日：2016-12-29
申请人： FUJIFILM Corporation
发明人： Tetsu Miyoshi
IPC分类号： H04R17/00 , H01L41/37 , H01L41/047 , H01L41/09 , H04R1/00 , H04R7/06 , H01L41/18 , H01L41/257
CPC分类号： H04R17/005 , H01L41/047 , H01L41/09 , H01L41/183 , H01L41/257 , H01L41/37 , H04R1/005 , H04R7/06 , H04R2307/025
摘要： Provided is an electro-acoustic conversion film that is suitably used for a digital speaker or the like, and that includes a polymer composite piezoelectric body formed by dispersing piezoelectric particles in a viscoelastic matrix formed of a polymer material having viscoelasticity at room temperature, and thin-film electrodes provided on both surfaces of the polymer composite piezoelectric body, and at least one of the thin-film electrodes is divided into a plurality of regions of which an area increases by 2n times (n is a natural number including 0). Thus, a digital speaker in which reverberation or crosstalk between segments is suppressed is obtained.

7. 发明授权

US09635467B2 Electroacoustic converter film 有权
公开(公告)号：US09635467B2
公开(公告)日：2017-04-25
申请号：US14858734
申请日：2015-09-18
申请人： FUJIFILM Corporation
发明人： Tetsu Miyoshi , Yusuke Hatanaka , Akito Fukunaga
IPC分类号： H04R25/00 , H04R17/00 , H01L41/18 , B06B1/06 , G10K11/00 , H04R17/02
CPC分类号： H04R17/005 , B06B1/0662 , B06B1/0688 , G10K11/004 , H01L41/183 , H04R17/025 , H04R2400/00 , H04R2499/11
摘要： Provided is an electroacoustic converter film including thin film electrodes provided on both surfaces of a polymeric composite piezoelectric body in which piezoelectric body particles are dispersed in a viscoelastic matrix formed of a polymer material that exhibits viscoelasticity at normal temperature, and protective layers formed on the thin film electrodes. The electroacoustic converter film further includes electrode lead-out metal foils laminated on the thin film electrodes, and the electrode lead-out metal foils allows connection to wiring through soldering when electrodes are led out from the thin film electrodes.

8. 发明授权

US09621997B2 Electroacoustic transduction film 有权
公开(公告)号：US09621997B2
公开(公告)日：2017-04-11
申请号：US14862380
申请日：2015-09-23
申请人： FUJIFILM Corporation
发明人： Tetsu Miyoshi , Yusuke Hatanaka
IPC分类号： H04R17/00 , H01L41/37 , H01L41/257 , H01L41/18 , H04R31/00 , H04R7/04
CPC分类号： H04R17/00 , H01L41/183 , H01L41/257 , H01L41/37 , H04R7/04 , H04R17/005 , H04R31/003 , H04R2499/11
摘要： Disclosed is an electroacoustic transduction film suitable for a flexible speaker or the like, in which predetermined acoustic properties are able to be stably exhibited regardless of a bending state. The electroacoustic transduction film includes a polymer composite piezoelectric body in which piezoelectric body particles are dispersed in a viscoelastic matrix formed of a polymer material having viscoelasticity at a normal temperature, and electrode layers interposing the polymer composite piezoelectric body therebetween, and an area fraction of the piezoelectric body particles in a contact surface with respect to the electrode layer is less than or equal to 50%, and thus the object is attained.

9. 发明授权

US10567884B2 Electroacoustic transducer 有权
公开(公告)号：US10567884B2
公开(公告)日：2020-02-18
申请号：US15958150
申请日：2018-04-20
申请人： FUJIFILM Corporation
发明人： Tetsu Miyoshi
IPC分类号： H01L41/053 , H04R17/00 , G10K11/178 , H04R3/02 , G10K9/125 , B06B1/06 , H01L41/193 , H04R17/02
摘要： An electroacoustic transduction film including a polymer composite piezoelectric body in which piezoelectric body particles are dispersed in a viscoelastic matrix formed of a polymer material having viscoelasticity at a normal temperature, and thin film electrodes respectively laminated on both surfaces of the polymer composite piezoelectric body is included, and two or more of the electroacoustic transduction films are laminated, and a gap between the adjacent electroacoustic transduction films is less than or equal to 3 cm.

10. 发明授权

US10455305B2 Electroacoustic transducer 有权
公开(公告)号：US10455305B2
公开(公告)日：2019-10-22
申请号：US16026392
申请日：2018-07-03
申请人： FUJIFILM Corporation
发明人： Tetsu Miyoshi
IPC分类号： H04R1/02 , G10K11/178 , H04R7/04 , H04R17/00 , H04R1/28 , H04R17/10 , G10K9/122 , G10K9/22 , A47G9/10 , H04R5/02 , H04R31/00 , H01L41/18 , A47G9/00
摘要： Provided is an electroacoustic transducer capable of reducing the thickness and weight of the entire pillow when a speaker is embedded in the pillow or a headrest, enabling miniaturization of a device by causing the position of the speaker to be close to a position at which the head is placed, and improving the accuracy of signal processing by reducing a load of the signal processing in a case where active noise control is performed, thereby improving a noise reduction effect. The electroacoustic transducer includes: an electroacoustic transduction unit having an electroacoustic transduction film including a polymer composite piezoelectric body in which piezoelectric body particles are dispersed in a viscoelastic matrix formed of a polymer material having viscoelasticity at a normal temperature and thin film electrodes respectively laminated on both surfaces of the polymer composite piezoelectric body, and an elastic support disposed in close contact with one principal surface to bend the shape of the electroacoustic transduction film; and a first cushion layer that is in contact with the electroacoustic transduction film on an electroacoustic transduction film side of the electroacoustic transduction unit to cover the electroacoustic transduction unit and is formed of a three-dimensional solid knitted fabric.

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