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1. 发明申请

US20160263872A1 THE STRETCHED LAMINATED FILM FOR USE IN PIEZOELECTRIC POLYMER MATERIAL, AND MANUFACTURING METHOD THEREOF 有权
标题翻译：用于压电聚合物材料的压延层压薄膜及其制造方法
公开(公告)号：US20160263872A1
公开(公告)日：2016-09-15
申请号：US15036076
申请日：2014-12-03
申请人： TEIJIN LIMITED , A SCHOOL CORPORATION KANSAI UNIVERSITY
发明人： Tetsuo YOSHIDA , Yoshiro TAJITSU , Atsuko KATO , Tomoka YOSHIMURA
IPC分类号： B32B27/08 , B32B37/15 , B32B27/36
CPC分类号： B32B27/08 , B29C47/0004 , B29C47/0021 , B29C47/0066 , B29C47/065 , B29K2067/046 , B32B27/36 , B32B37/153 , B32B2307/20 , B32B2307/516 , B32B2307/72 , B32B2457/00 , H01L41/0986 , H01L41/113 , H01L41/193 , H01L41/333 , H01L41/45
摘要： The object of the present invention is to provide a laminated film made of polylactic acids which is not prone to delamination while having excellent piezoelectric properties and a manufacturing method thereof. That is, the present invention is obtained by the stretched laminated film manufactured by a co-extrusion process for use in piezoelectric polymer materials, containing a layer (A) which has poly-L-lactic acid as the primary component and contains an impact modifier in the range of 0.1 to 10 mass % and a layer (B) which has poly-D-lactic acid as the primary component and contains an impact modifier in the range of 0.1 to 10 mass %.
摘要翻译：本发明的目的是提供一种由聚乳酸制成的叠层膜，其不易分层，同时具有优异的压电性能及其制造方法。也就是说，本发明通过使用压电聚合物材料的共挤出方法制造的拉伸层压膜获得，该压电聚合物材料含有以聚-L-乳酸为主要成分的层（A），并且含有抗冲改性剂在0.1〜10质量％的范围内，和具有聚-D-乳酸作为主要成分并且含有0.1〜10质量％范围的抗冲改性剂的层（B）。

2. 发明申请

US20190273199A1 STRUCTURE FOR USE IN PIEZOELECTRIC ELEMENT, BRAIDED PIEZOELECTRIC ELEMENT, FABRIC-LIKE PIEZOELECTRIC ELEMENT USING BRAIDED PIEZOELECTRIC ELEMENT, AND DEVICE USING THESE 审中-公开
公开(公告)号：US20190273199A1
公开(公告)日：2019-09-05
申请号：US16345402
申请日：2017-10-27
申请人： TEIJIN LIMITED , KANSAI UNIVERSITY
发明人： Yoshiro TAJITSU , Shunsuke KANEMATSU , Yuhei ONO
IPC分类号： H01L41/08 , H01L41/04 , H01L41/053 , H01L41/113 , H01L41/193 , D03D15/00 , D04C1/12 , D04C1/02 , D04B1/16 , D04B1/22 , D04B21/20 , D04B21/16 , G01B7/16
摘要： A structure includes an oriented piezoelectric polymer arranged in a circular tubular or circular columnar shape, wherein the orientation angle of the piezoelectric polymer with respect to the central axis of the structure is 150 to 750, the piezoelectric polymer includes a crystalline polymer having an absolute value of 0.1 to 1000 pC/N for the piezoelectric constant d14 when the orientation axis is the third axis, and the piezoelectric polymer includes a P-body containing a crystalline polymer with a positive piezoelectric constant d14 value and an N-body containing a crystalline polymer with a negative value, wherein for the portion of the central axis of the structure having a length of 1 cm, the value of T1/T2 is 0 to 0.8, T1 being the smaller and T2 being the larger of (ZP+SN) and (SP+ZN), where ZP, SP, ZN, and SN are particularly defined masses.

3. 发明申请

US20180108826A1 PIEZOELECTRIC ELEMENT AND DEVICE USING SAME 审中-公开
公开(公告)号：US20180108826A1
公开(公告)日：2018-04-19
申请号：US15569878
申请日：2016-04-28
申请人： TEIJIN LIMITED , KANSAI UNIVERSITY
发明人： Yoshiro TAJITSU , Yuhei ONO , Tomoyoshi YAMAMOTO , Shunsuke KANEMATSU , Satoko YOSHIZAKI , Suguru OZAWA
IPC分类号： H01L41/08 , H01L41/09 , H01L41/113 , H01L41/193 , H01L41/29 , H01L41/45 , G01L1/16 , G06F3/041
CPC分类号： H01L41/082 , D03D1/0088 , G01L1/16 , G06F3/0414 , H01L41/047 , H01L41/0986 , H01L41/1132 , H01L41/193 , H01L41/29 , H01L41/45
摘要： The purpose of the present invention is to provide a fibrous piezoelectric element which enables a large electric signal to be drawn out by stress produced by relatively small deformation. A piezoelectric element includes a braid composed of a conductive fiber and a piezoelectric fiber. In the braid, the conductive fiber is a core, and the piezoelectric fiber is a covering fiber that covers the periphery of the conductive fiber.

4. 发明申请

US20180358541A1 BRAIDED PIEZOELECTRIC ELEMENT, FABRIC-LIKE PIEZOELECTRIC ELEMENT USING BRAIDED PIEZOELECTRIC ELEMENT, AND DEVICE USING SAME 审中-公开
公开(公告)号：US20180358541A1
公开(公告)日：2018-12-13
申请号：US16066385
申请日：2016-12-28
申请人： TEIJIN LIMITED , KANSAI UNIVERSITY
发明人： Yoshiro TAJITSU , Shunsuke KANEMATSU , Yuhei ONO , Suguru OZAWA , Tomoyoshi YAMAMOTO , Satoko YOSHIZAKI
IPC分类号： H01L41/08 , D04C1/02 , D04C1/12 , D03D1/00 , D03D15/00 , D04B1/00 , D04B21/00 , H01L41/04 , H01L41/047 , H01L41/053 , H01L41/113 , H01L41/193
CPC分类号： H01L41/082 , D03D1/00 , D03D1/0088 , D03D15/00 , D04B1/00 , D04B21/00 , D04C1/02 , D04C1/12 , D10B2401/16 , G01L1/16 , G06F3/041 , H01L41/042 , H01L41/047 , H01L41/0475 , H01L41/0533 , H01L41/113 , H01L41/1132 , H01L41/193
摘要： Provided is a configuration capable of improving the signal strength of a piezoelectric element using piezoelectric fibers. This braided piezoelectric element comprises a core comprising conductive fibers and a sheath comprising braided piezoelectric fibers so as to cover the core, the braided piezoelectric element further comprising a metal terminal connected and fixed to the core in either of the following states A or B. A) A state where a portion of the metal terminal grasps a fiber portion constituting the end of a braided piezoelectric element and the core and the metal terminal are electrically connected to each other and fixed within 1 mm from where the metal terminal grasps the fiber portion. B) A state where: a portion of the metal terminal has a fork or needle shape; the fork-shaped or needle-shaped portion is electrically connected to the core while in contact with the sheath; and the braided piezoelectric element is secured to the metal terminal by another portion of the metal terminal or a component fixed to the metal terminal within 10 mm from the point of the electrical connection.

5. 发明申请

US20170029985A1 TRANSDUCER INCLUDING FIBERS AND OUTPUTTING AND INPUTTING AN ELECTRIC SIGNAL 审中-公开
标题翻译：传感器包括光纤和输入和输入电信号
公开(公告)号：US20170029985A1
公开(公告)日：2017-02-02
申请号：US15304180
申请日：2015-04-07
申请人： TEIJIN LIMITED , KANSAI UNIVERSITY
发明人： Yoshiro TAJITSU , Yuhei ONO , Akihiko UCHIYAMA , Tomoyoshi YAMAMOTO
IPC分类号： D03D1/00 , H01L41/047 , H01L41/09 , H04R17/00 , H01L41/45 , H01L41/193 , H02N2/18 , D03D15/00 , H01L41/113
CPC分类号： D03D1/00 , D03D1/0088 , D03D15/00 , D10B2401/06 , D10B2401/16 , H01L41/0477 , H01L41/082 , H01L41/09 , H01L41/113 , H01L41/1132 , H01L41/193 , H01L41/45 , H02N2/18 , H04R17/005
摘要： A transducer in the form of cloth having high flexibility obtained by manufacturing a conventional woven or knitted fabric structure using general-purpose fiber materials. The transducer includes piezoelectric units, each including two conductive fibers and one piezoelectric fiber arranged substantially on the same plane in the order of the conductive fiber, the piezoelectric fiber and the conductive fiber, and outputs and inputs an electric signal.
摘要翻译：通过使用通用纤维材料制造常规机织或针织织物结构而获得的具有高柔性的布形式的换能器。换能器包括压电单元，每个压电单元包括两个导电纤维和一个基本上在导电纤维，压电纤维和导电纤维的顺序上相同的平面上布置的一个压电纤维，并且输出和输入电信号。

6. 发明申请

US20190341541A1 PIEZOELECTRIC LAMINATE ELEMENT, AND LOAD SENSOR AND POWER SUPPLY USING SAME 审中-公开
公开(公告)号：US20190341541A1
公开(公告)日：2019-11-07
申请号：US16462379
申请日：2017-11-07
申请人： TEIJIN LIMITED , KANSAI UNIVERSITY , Panasonic Intellectual Property Management Co., Ltd.
发明人： Tetsuo YOSHIDA , Yoshiro TAJITSU , Atsuko KATO , Hiroki TAKEOKA , Yukihiro SHIMASAKI
IPC分类号： H01L41/083 , H01L41/047 , H01L41/113 , H01L41/193 , H02N2/18 , G01L1/16
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.

7. 发明申请

US20160005951A1 PIEZOELECTRIC VIBRATOR 有权
标题翻译：压电振动器
公开(公告)号：US20160005951A1
公开(公告)日：2016-01-07
申请号：US14652302
申请日：2014-01-23
申请人： TEIJIN LIMITED , A SCHOOL CORPORATION KANSAI UNIVERSITY
发明人： Tetsuo YOSHIDA , Yoshiro TAJITSU , Atsuko KATO
IPC分类号： H01L41/09 , H01L41/047 , H01L41/053
CPC分类号： H01L41/09 , H01L41/0471 , H01L41/0536 , H01L41/083 , H01L41/193 , H01L41/277 , H04R7/04 , H04R17/005
摘要： The invention relates to a piezoelectric vibrator having a piezoelectric laminate in which oriented film layers made of a polylactic acid and conductive layers are laminated alternately and grippers gripping both ends of the piezoelectric laminate, wherein one of two conductive layers neighboring via an oriented film layer is short-circuited to a negative electrode and the other conductive layer is short-circuited to a positive electrode, the oriented film layers interposed between the respective conductive layers are laminated such that the oriented film layers expand and contract in the same direction when a current is applied, the piezoelectric laminate has two parallel surfaces which are parallel to the plane direction of the oriented film layers and two end faces A and B which are between the parallel surfaces and parallel to each other, and the gripped ends respectively include the end face A and the end face B.
摘要翻译：本发明涉及一种具有压电层叠体的压电振动器，其中由聚乳酸和导电层形成的取向膜层交替层叠，夹持夹持压电层叠体两端的夹持器，其中通过取向膜层相邻的两个导电层中的一个是短路到负极，另一个导电层与正极短路，夹在各个导电层之间的取向膜层被层叠，使得当电流为相同方向时，取向膜层向相同方向膨胀和收缩压电层叠体具有与取向膜层的平面方向平行的两个平行面和位于平行面之间且彼此平行的两个端面A和B，并且夹持端分别包括端面A 和端面B.

8. 发明申请

US20200061669A1 ELECTRETIZED FILM AND ELECTRONIC DEVICE 审中-公开
公开(公告)号：US20200061669A1
公开(公告)日：2020-02-27
申请号：US16490154
申请日：2018-03-01
申请人： MITSUI CHEMICALS, INC. , THE SCHOOL CORPORATION KANSAI UNIVERSITY
发明人： Yoshiro TAJITSU , Yuzo NAKAMURA , Tomoya MATAYOSHI , Takayuki WATANABE , Michio ERIGUCHI
IPC分类号： B06B1/02
摘要： An electretized film of the present invention includes a cyclic olefin polymer, in which the electretized film is a non-porous film, and a piezoelectric constant d33 in a thickness direction, which is measured by applying a pressing force to the electretized film in the thickness direction, under conditions of a load of 0.5 N, a dynamic load of ±0.25 N, a frequency of 110 Hz, a temperature of 23° C., and a humidity of 50%, is equal to or more than 100 pC/N.

9. 发明申请

US20210135087A1 PIEZOELECTRIC STRUCTURE AND DEVICE USING SAME 有权
公开(公告)号：US20210135087A1
公开(公告)日：2021-05-06
申请号：US16476648
申请日：2018-01-10
申请人： TEIJIN FRONTIER CO., LTD. , KANSAI UNIVERSITY
发明人： Yoshiro TAJITSU , Yuhei ONO , Shunsuke KANEMATSU , Tomoyoshi YAMAMOTO
IPC分类号： H01L41/08 , H01L41/04 , H01L41/113 , H01L41/193 , G01L1/16 , D04C1/06 , D04C1/02
摘要： Provided is a piezoelectric structure comprising a braid composed of a conductive fiber and piezoelectric fibers, the braid being a covered fiber having the conductive fiber as the core and the piezoelectric fibers covering the periphery of the conductive fiber, wherein the covered fiber has at least one bent section, and when the piezoelectric structure is placed on a horizontal surface, the height from the horizontal surface to the uppermost section of the piezoelectric structure is greater than the diameter of the covered fiber.

10. 发明申请

US20180022861A1 PHOTOELASTIC POLYURETHANE RESIN, DETECTION MEMBER, ROBOT, AND METHOD FOR PRODUCING PHOTOELASTIC POLYURETHANE RESIN 审中-公开
公开(公告)号：US20180022861A1
公开(公告)日：2018-01-25
申请号：US15548011
申请日：2016-02-05
申请人： MITSUI CHEMICALS, INC. , A SCHOOL CORPORATION KANSAI UNIVERSITY
发明人： Masahiko MITSUZUKA , Satoshi YAMASAKI , Yoshiro TAJITSU
IPC分类号： C08G18/66 , G01L7/08 , C08G18/76 , C08G18/32 , C08G18/48
CPC分类号： C08G18/6677 , C08G18/3206 , C08G18/4854 , C08G18/65 , C08G18/7671 , C08G18/7685 , G01L7/086
摘要： The photoelastic polyurethane resin has a Young's modulus at 25° C. of 2 to 5 MPa, a photoelastic constant at 25° C. of 1000×10−12 Pa−1 to 100000×10−12 Pa−1, and a glass transition temperature of −60° C. to −21° C.

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