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1.发明申请公开(公告)号：US20180062013A1
公开(公告)日：2018-03-01
申请号：US15558555
申请日：2016-03-15
Applicant: TOYOBO CO., LTD.
Inventor： Shotaro NISHIO , Akira SHIMIZU , Jun INAGAKI , Shinji SAWASAKI
IPC: H01L31/048 , B32B27/08 , B32B27/36 , B32B27/20 , H01L31/049 , H01L31/054
Abstract: The object of the present invention is to provide a white polyester film for a solar cell that is excellent in transfer-mark concealment properties (properties that transferred irregularities are hard to be seen) while having high whiteness, and exhibiting good light resistance and hydrolysis resistance, a sealing sheet for a back surface of a solar cell and a solar cell module using the same. The white polyester film for a solar cell of the present invention has whiteness of 50 or more, an average reflectance of 50 to 95% in a range of wavelength of 400 to 800 nm, an acid value of 1 to 50 eq/ton, and a thickness of 30 to 380 μm, and the film has a multilayer structure in which a polyester resin layer containing inorganic fine particles in an amount of 10 to 38% by mass is disposed as at least one outermost layer, and a half-value width of protrusion distribution on a surface of the polyester resin layer is 200 to 1000 nm, the protrusion distribution being obtained by plotting the number density of protrusions with respect to protrusion height.
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2.发明公开公开(公告)号：US20230317964A1
公开(公告)日：2023-10-05
申请号：US18003240
申请日：2021-06-17
Applicant: TOYOBO CO., LTD.
Inventor： Shotaro NISHIO , Akira SHIMIZU
IPC: H01M4/66
Abstract: The invention provides a polyphenylene sulfide film formed of a polyphenylene sulfide resin composition and comprising at least one layer, wherein the (a) polyphenylene sulfide film has a thickness of 0.2-30 μm, (b) the polyphenylene sulfide film has a tensile elongation at break of 30%-150% in each of an MD direction and a TD direction, (c) a relationship between the tensile elongation at break in the MD direction (SMD) and the tensile elongation at break in the TD direction (STD) satisfies the formula 0.75≤SMD/STD≤1.25, and (d) the polyphenylene sulfide film has a heat shrinkage rate at 180° C. for 30 minutes of 4% or less in both the MD direction and the TD direction.
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公开(公告)号：US20230192974A1
公开(公告)日：2023-06-22
申请号：US17996249
申请日：2021-04-15
Applicant: TOYOBO CO., LTD.
Inventor： Shotaro NISHIO , Mei MATSUMURA , Akira SHIMIZU
CPC classification number: C08J5/18 , G06F1/1652 , G02B1/14 , C08J2367/03
Abstract: In order to provide a foldable display that is suitable for mass production and that has no risk of image distortion at its folding portion after the display is repeatedly folded, the invention provides a polyester film for foldable displays in which no cracks occurs in the folding portion. In particular, the invention provides a polyester film for a foldable display, the film having a thickness of 10-125 μm and a high-temperature hold angle in a bending direction of 70° or more, wherein the high-temperature hold angle refers to an angle of a crease formed after fixing the film at a heating temperature of 85° C. for 18 hours in such a manner that a strain of 1.7% is applied to both surfaces of a bent portion of the film, and the bending direction refers to a direction that is orthogonal to a folding portion.
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4.发明申请公开(公告)号：US20250162226A1
公开(公告)日：2025-05-22
申请号：US18840758
申请日：2023-04-04
Applicant: TOYOBO CO., LTD.
Inventor： Shotaro NISHIO , Akira SHIMIZU , Anna NAKANISHI
IPC: B29C48/00 , B29C48/21 , B29K23/00 , B29K67/00 , B29K83/00 , B29K105/00 , B29K105/04
Abstract: Provided is a cavity-containing polyester film that exhibits excellent lightness, film formability, concealing properties, and whiteness even in a case of mainly using a polyolefin resin (for example, polypropylene resin) as a cavity generating agent. The cavity-containing polyester film is a laminated body in which a first coating layer B1 that includes a polyester resin containing an inorganic pigment, a cavity-containing layer A that contains cavities inside, and a second coating layer B2 that includes a polyester resin containing an inorganic pigment are laminated in this order. This cavity-containing layer A includes a composition containing a polyester resin, a polyolefin resin, and a silicone resin. The apparent density of this cavity-containing polyester film is 0.80 g/cm3 or more and 1.20 g/cm3 or less. The inorganic pigment in the first coating layer B1 and second coating layer B2 is, for example, titanium oxide.
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公开(公告)号：US20240052205A1
公开(公告)日：2024-02-15
申请号：US18257987
申请日：2021-12-17
Applicant: TOYOBO CO., LTD.
Inventor： Mei MATSUMURA , Akira SHIMIZU
CPC classification number: C09J7/255 , C09J7/29 , G02B1/04 , C09J2203/334 , C09J2203/326 , C09J2301/162 , C09J2467/006
Abstract: Provided is a polyester film that is excellent in stiffness and transparency, and that is suitable for producing molded articles, labels, optical films, and the like. A biaxially stretched polyester film comprises a polyester resin (I) comprising terephthalic acid and ethylene glycol as main constituent components, the polyester resin (I) having a recrystallization temperature obtained by DSC of 160° C. or more and 193° C. or less, the polyester resin (I) being contained in an amount of 60 mass % or more based on 100 mass % of the entire film, the film having a tensile modulus of elasticity of 3200 MPa or more both in a longitudinal direction and a width direction, and the total tensile modulus of elasticity in the longitudinal direction and the width direction being 7000 MPa or more.
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Patent Agency Ranking
公开(公告)号：US20220246069A1
公开(公告)日：2022-08-04
申请号：US17614260
申请日：2020-05-14
Applicant: TOYOBO CO., LTD.
Inventor： Shotaro NISHIO , Kiwamu KAWAI , Mei MATSUMURA , Akira SHIMIZU
Abstract: Provided is a transparent conductive polyester film for a foldable display which is free of occurrence of a fold mark or a tear at a folding portion thereof to be used in a foldable display excellent in mass productivity, and free of a risk of causing distortion in an image displayed at a folding portion thereof, and a mobile device. The transparent conductive polyester film for a foldable display includes: a polyester film; and a transparent conductive layer laminated on at least one surface of the polyester film, wherein the polyester film satisfies the following conditions: (1) a refractive index in a bending direction is from 1.590 to 1.620; (2) a refractive index in a folding portion direction is from 1.670 to 1.700; (3) a refractive index in a thickness direction is 1.520 or less; and (4) a density is 1.380 g/cm3 or more, wherein the bending direction refers to a direction orthogonal to a folding portion of the polyester film at a time when the polyester film is folded.
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公开(公告)号：US20220236468A1
公开(公告)日：2022-07-28
申请号：US17615433
申请日：2020-05-15
Applicant: TOYOBO CO., LTD.
Inventor： Shotaro NISHIO , Kiwamu KAWAI , Akira SHIMIZU
Abstract: Provided is a foldable display excellent in mass productivity, and free of a risk of causing distortion in an image displayed at a folding portion thereof after being repeatedly folded. The foldable display includes at least: a surface protective film; a polarizer; and a retardation layer, wherein the surface protective film is a polyester film satisfying the following conditions and having a thickness of from 10 μm to 80 (1) a refractive index in a bending direction is from 1.590 to 1.620; (2) a refractive index in a folding portion direction is from 1.670 to 1.700; (3) a refractive index in a thickness direction is 1.520 or less; and (4) a density is 1.380 g/cm3 or more, wherein the bending direction refers to a direction orthogonal to a folding portion of the polyester film at a time when the polyester film is folded.
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公开(公告)号：US20220236467A1
公开(公告)日：2022-07-28
申请号：US17615426
申请日：2020-05-15
Applicant: TOYOBO CO., LTD.
Inventor： Shotaro NISHIO , Kiwamu KAWAI , Akira SHIMIZU
Abstract: The present invention provides a polarizing plate for a foldable display free of a risk of causing distortion in an image displayed at a folding portion thereof after being repeatedly folded. The polarizing plate for a foldable display includes: a polarizer; and a polarizer protective film formed of a polyester film laminated on at least one surface of the polarizer, wherein the polyester film satisfies the following conditions: (1) a refractive index in a bending direction is from 1.590 to 1.620; (2) a refractive index in a folding portion direction is from 1.670 to 1.700; (3) a refractive index in a thickness direction is 1.520 or less; and (4) a density is 1.380 g/cm3 or more, wherein the bending direction refers to a direction orthogonal to a folding portion of the polyester film at a time when the polyester film is folded.
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公开(公告)号：US20220227950A1
公开(公告)日：2022-07-21
申请号：US17614228
申请日：2020-05-14
Applicant: TOYOBO CO., LTD.
Inventor： Shotaro NISHIO , Kiwamu KAWAI , Akira SHIMIZU
Abstract: Provided is a polyester film for a touchscreen module substrate of a foldable display which is free of occurrence of a crack at a folding portion thereof, in order to provide a foldable display excellent in mass productivity, and free of a risk of causing distortion in an image displayed at a folding portion thereof after being repeatedly folded. The polyester film for a touchscreen module substrate of a foldable display satisfies the following conditions: (1) a refractive index in a bending direction is from 1.590 to 1.620; (2) a refractive index in a folding portion direction is from 1.670 to 1.700; (3) a refractive index in a thickness direction is 1.520 or less; and (4) a density is 1.380 g/cm or more, wherein the bending direction refers to a direction orthogonal to a folding portion of the polyester film at a time when the polyester film is folded.
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公开(公告)号：US20220213350A1
公开(公告)日：2022-07-07
申请号：US17614154
申请日：2020-05-14
Applicant: TOYOBO CO., LTD.
Inventor： Shotaro NISHIO , Kiwamu KAWAI , Akira SHIMIZU
Abstract: Provided is a laminated film for a foldable display, the laminated film being free of occurrence of a fold mark or a crack at a folding portion thereof, in order to provide, for example, a foldable display excellent in mass productivity, and free of a risk of causing distortion in an image displayed at a folding portion thereof after being repeatedly folded. The laminated film for a foldable display includes: a polyester film having a thickness of from 10 μm to 100 μm; and an adhesive layer formed on at least one surface of the polyester film, wherein the polyester film satisfies the following conditions: (1) a refractive index in a bending direction is from 1.590 to 1.620; (2) a refractive index in a folding portion direction is from 1.670 to 1.700; (3) a refractive index in a thickness direction is 1.520 or less; and (4) a density is 1.380 g/cm3 or more, wherein the bending direction refers to a direction orthogonal to a folding portion of the polyester film at a time when the polyester film is folded.
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