公开(公告)号：US20170033276A1

公开(公告)日：2017-02-02

申请号：US15121484

申请日：2015-02-26

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Meiten KOU ,  Tetsuhiro KODANI ,  Tomoyuki GOTOU ,  Saori INABA ,  Takashi KANEMURA

IPC: H01L41/193 ,  H01L41/45 ,  H01L41/113

CPC classification number: H01L41/193 ,  G06F3/041 ,  G06F3/0414 ,  G06F2203/04103 ,  H01L41/113 ,  H01L41/1132 ,  H01L41/1138 ,  H01L41/45 ,  H04R17/005

Abstract: An object of the present invention is to provide a bimorph piezoelectric film that enables the production of touch panels and the like that are less influenced by pyroelectric noise due to temperature change, and exhibit high transparency.The present invention provides a bimorph piezoelectric film comprising in sequence a first piezoelectric film, a tackifier layer or an adhesive agent layer, and a second piezoelectric film, the first piezoelectric film and the second piezoelectric film being disposed in such a manner that their surfaces on which electric charges of the same polarity are generated by a temperature increase are each outward-facing, the first piezoelectric film and the second piezoelectric film each having a total light transmittance of 90% or more, and a total haze value of 8.0% or less.

Abstract translation: 本发明的目的是提供一种双压电晶片型压电薄膜，该双压电晶片型压电薄膜能够提供不容易受到由温度变化引起的热电噪声影响的高度透明的触摸面板等。 本发明提供了一种包括第一压电膜，胶合剂层或粘合剂层的双压电晶片型压电膜，以及第二压电膜。 第一压电膜和第二压电膜被布置成使得分别由于温度升高而产生具有相同极性的电荷的表面。 双压电晶片型压电膜的总透光率为90％以上，总雾度为8％以下。

公开(公告)号：US20150349500A1

公开(公告)日：2015-12-03

申请号：US14655988

申请日：2013-12-27

Applicant: DAIKIN INDUSTRIES, LTD. ,  TOHO KASEI CO., LTD.

Inventor： Tetsuhiro KODANI ,  Eri MUKAI ,  Takashi KANEMURA ,  Meiten KOU ,  Susumu KAWATO ,  Satoshi SHIMIZU

IPC: H01T19/04 ,  G01N21/84 ,  G01N21/896

CPC classification number: H01T19/04 ,  C08J7/123 ,  C08J2327/16 ,  G01N21/8422 ,  G01N21/896 ,  G01N2021/8965

Abstract: An object of the present invention is to provide a polarized vinylidene fluoride/tetrafluoroethylene copolymer resin film that can significantly reduce, when used as an optical film, the deterioration of the quality of video or still images formed by display elements.The present invention provides a polarized vinylidene fluoride/tetrafluoroethylene copolymer resin film having 2,000 or fewer spot defects per m2, the number of spot defects being measured by a defect measurement method; the method using an surface inspection system in which a CCD camera is placed so as to detect defects at an angle of 45 degrees relative to an LED source, defects of the film are read within a rectangular range of 300 mm in a width direction (the direction perpendicular to the scanning direction), and 150 mm in a machine direction (the scanning direction), while the film is scanned under the camera at a rate of 20 m/min; wherein first, defects having a bright area of 1.5 mm2 or less and a dark area of 1.4 mm2 or less are selected; and next, in order to remove defects resulting from causes other than a corona treatment contained in these defects, a circumscribed rectangle of defect is set so as to have two sides along the scanning direction, and the number of only defects that have a circumscribed width of 2.88 mm or less, a circumscribed length of 2.3 mm or less, an aspect ratio of −39 to +27, an occupancy area ratio in the circumscribing rectangle of 4,000 to 6,950, and an area ratio of −3,100 to +5,200, is automatically counted as spot defects by the surface inspection system.

Abstract translation: 本发明的目的是提供一种偏光偏二氟乙烯/四氟乙烯共聚物树脂膜，其可以在用作光学膜时显着降低由显示元件形成的视频或静止图像的质量的劣化。 本发明提供一种偏光偏二氟乙烯/四氟乙烯共聚物树脂膜，其具有每平方米2000个以上的斑点缺陷，通过缺陷测量方法测量的斑点缺陷数; 使用其中放置CCD照相机以便相对于LED源以45度的角度检测缺陷的表面检查系统的方法，在宽度方向上的300mm的矩形范围内读取膜的缺陷（ 垂直于扫描方向的方向），并且在机器方向（扫描方向）上为150mm，同时以20m / min的速率在相机下扫描胶片; 其中，首先选择亮区域为1.5mm 2以下，暗区域为1.4mm 2以下的缺陷; 接下来，为了除去由这些缺陷中包含的电晕处理以外的原因引起的缺陷，将外接的缺陷矩形设定为沿着扫描方向具有两侧，并且仅具有外接宽度的缺陷的数量 2.88mm以下，外接长度为2.3mm以下，纵横比为-39〜+ 27，外接矩形的占有面积比为4,000〜6,950，面积比为-31〜+ 52,200。 由表面检查系统自动计算为斑点缺陷。

公开(公告)号：US20130237677A1

公开(公告)日：2013-09-12

申请号：US13874285

申请日：2013-04-30

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Takayuki ARAKI ,  Tetsuhiro KODANI

IPC: C08F114/22 ,  C07C21/18

CPC classification number: C08F114/22 ,  C07C21/18 ,  Y10T428/3154 ,  Y10T428/31544

Abstract: A vinylidene fluoride homopolymer represented by the formula (4): CF3-(A1)—I  (4) wherein A1 represents a structural unit of vinylidene fluoride homopolymer which includes crystal form I alone or as main component and has a number average degree of polymerization of 5 to 12.

Abstract translation: 由式（4）表示的偏二氟乙烯均聚物：CF 3 - （A1）-I（4）其中A1表示单独的晶形I或主要组分并具有数均聚合度的偏二氟乙烯均聚物的结构单元 为5至12。

公开(公告)号：US20230069063A1

公开(公告)日：2023-03-02

申请号：US17969953

申请日：2022-10-20

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tetsuhiro KODANI ,  Saori SAKAMI ,  Shinya BITOU ,  Masaharu ARIMOTO ,  Takashi KANEMURA

IPC: C08F214/22 ,  C08F214/26 ,  C08F214/24 ,  C08J5/18 ,  H01L41/257 ,  H01L41/45

Abstract: An object is to provide a fluorine-containing polymer film. The object can be achieved by a fluorine-containing polymer film having a thermal shrinkage of 0.4% or less after being heated at 90° C. for 1 hour, and having a relative permittivity of 3 to 50 at 25° C. at 1000 Hz, or a fluorine-containing polymer film having a crystallinity of 50% or more and an elongation at break of 400% or more.

公开(公告)号：US20180223059A1

公开(公告)日：2018-08-09

申请号：US15742971

申请日：2016-07-13

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Takashi KANEMURA ,  Eri MUKAI ,  Takeshi HAZAMA ,  Tetsuhiro KODANI ,  Nobuyuki KOMATSU ,  Hisako NAKAMURA ,  Kouji YOKOTANI ,  Mayuko TATEMICHI ,  Akio HIGAKI

IPC: C08J5/18 ,  C08F214/26

Abstract: The present invention provides a film having excellent heat resistance and a small difference between the permittivity at low temperatures and the permittivity at high temperatures. The present invention provides a film having a relative permittivity of 8 or more at a frequency of 1 kHz at 30° C., wherein the rate of change is −8 to +8% as calculated from a relative permittivity A at a frequency of 1 kHz at 30° C. and a relative permittivity B at a frequency of 1 kHz at 150° C. according to the following formula: Rate of change (%)=(B−A)/A×100.

公开(公告)号：US20160202823A1

公开(公告)日：2016-07-14

申请号：US14913065

申请日：2014-10-08

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tetsuhiro KODANI ,  Eri MUKAI ,  Takashi KANEMURA ,  Meiten KOU

IPC: G06F3/041

CPC classification number: G06F3/0414

Abstract: A touch panel hardly affected by pyroelectric noise due to temperature includes a first pyroelectric material and a second pyroelectric material, and is capable of detecting press pressure applied to the first pyroelectric material and/or the second pyroelectric material. The upper surface of the first pyroelectric material and the lower surface of the second pyroelectric material are surfaces on which a positive charge is generated when the temperature increases, and a negative charge is generated when the temperature decreases. The lower surface of the first pyroelectric material and the upper surface of the second pyroelectric material are surfaces on which a negative charge is generated when the temperature increases, and a positive charge is generated when the temperature decreases.

Abstract translation: 由于温度而不受热电噪声影响的触摸面板包括第一热电材料和第二热电材料，并且能够检测施加到第一热电材料和/或第二热电材料的压力。 第一热电材料的上表面和第二热电材料的下表面是当温度升高时产生正电荷的表面，当温度降低时产生负电荷。 第一热电材料的下表面和第二热电材料的上表面是当温度升高时产生负电荷的表面，并且当温度降低时产生正电荷。

公开(公告)号：US20210384411A1

公开(公告)日：2021-12-09

申请号：US17285778

申请日：2019-10-16

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tetsuhiro KODANI ,  Saori SAKAMI ,  Shinya BITOU ,  Takashi KANEMURA ,  Akinari SUGIYAMA

IPC: H01L41/193 ,  H01L41/257 ,  H01L41/45

Abstract: An object is to provide a piezoelectric film with good piezoelectricity. This object can be achieved by a piezoelectric film comprising a vinylidene fluoride/tetrafluoroethylene copolymer film and having a residual polarization amount of 40 mC/m2 or more.

公开(公告)号：US20190109274A1

公开(公告)日：2019-04-11

申请号：US16087885

申请日：2017-03-27

Applicant: TOHO KASEI CO., LTD. ,  DAIKIN INDUSTRIES, LTD.

Inventor： Ken OGASAHARA ,  Satoshi SHIMIZU ,  Susumu KAWATO ,  Takashi KANEMURA ,  Tetsuhiro KODANI

IPC: H01L41/193 ,  H01L41/087 ,  H01L41/45 ,  H01L41/113

Abstract: A piezoelectric wire of the present invention includes a conductive wire 11 and a polymer piezoelectric layer 12 that coats the conductive wire 11. The polymer piezoelectric layer 12 contains a β-phase polyvinylidene fluoride-based copolymer, and the conductive wire 11 has a wire diameter of 1.0 mm or less. The β-phase polyvinylidene fluoride-based copolymer is preferably at least one selected from a vinylidene fluoride-trifluoroethylene copolymer and a vinylidene fluoride-tetrafluoroethylene copolymer.

公开(公告)号：US20150368413A1

公开(公告)日：2015-12-24

申请号：US14433685

申请日：2013-10-16

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Mayuko TATEMICHI ,  Miharu OTA ,  Kouji YOKOTANI ,  Nobuyuki KOMATSU ,  Hisako NAKAMURA ,  Fumiko SHIGENAI ,  Takeshi HAZAMA ,  Masakazu KINOSHITA ,  Meiten KOH ,  Takuji ISHIKAWA ,  Takashi IGUCHI ,  Kazunobu UCHIDA ,  Tomoyuki FUKATANI ,  Takahiro KITAHARA ,  Tetsuhiro KODANI

IPC: C08J5/18 ,  C08K3/22 ,  C08K3/36 ,  G02B26/00

CPC classification number: C08J5/18 ,  C08J2327/16 ,  C08J2327/18 ,  C08K3/22 ,  C08K3/36 ,  C08K2003/2206 ,  C08K2003/222 ,  C08K2003/2227 ,  C08K2003/2237 ,  G02B3/14 ,  G02B26/005 ,  G02B26/02 ,  H01G4/1209 ,  H01G4/18 ,  H01G4/206

Abstract: The present invention aims to provide a film having a high dielectric constant and a low dissipation factor. The high dielectric film of the present invention includes a vinylidene fluoride/tetrafluoroethylene copolymer (A) with a mole ratio (vinylidene fluoride)/(tetrafluoroethylene) of 95/5 to 80/20. The film includes an β-crystal structure and a β-crystal structure. The ratio of the β-crystal structure is 50% or more.

Abstract translation: 本发明的目的在于提供一种具有高介电常数和低耗散因子的膜。 本发明的高介电膜包括摩尔比（偏二氟乙烯）/（四氟乙烯）为95/5〜80/20的偏氟乙烯/四氟乙烯共聚物（A）。 该膜包括一个结晶结构和一个结晶结构。 结晶结构的比例为50％以上。

公开(公告)号：US20240224806A1

公开(公告)日：2024-07-04

申请号：US18606707

申请日：2024-03-15

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Masaharu ARIMOTO ,  Saori SAKAMI ,  Tetsuhiro KODANI ,  Takashi KANEMURA

IPC: H10N30/85 ,  C08J5/18 ,  H10N30/00 ,  H10N30/87

CPC classification number: H10N30/85 ,  C08J5/18 ,  H10N30/1051 ,  H10N30/87 ,  C08J2327/16

Abstract: An object is to provide an organic piezoelectric film with a high level of piezoelectricity, a high level of transparency, and a low level of retardation. The organic piezoelectric film of the present disclosure has a total light transmittance of 90% or more, an internal haze value of 0.2%/μm or less per unit film thickness or an internal haze value of 4% or less, piezoelectric constant d33 of 13 pC/N or more, and a retardation within the range of 0.01 to 10 nm/μm per unit film thickness or a retardation within the range of 0.1 to 900 nm.