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公开(公告)号：US20220252763A1
公开(公告)日：2022-08-11
申请号：US17614201
申请日：2020-05-14
Applicant: TOYOBO CO., LTD.
Inventor： Shotaro NISHIO , Kiwamu KAWAI , Akira SHIMIZU
Abstract: Provided are a polyester film, a laminated film, and the like for protecting an organic EL module of a foldable display each of 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 protecting an organic EL module 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/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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2.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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3.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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公开(公告)号：US20220275159A1
公开(公告)日：2022-09-01
申请号：US17625302
申请日：2020-06-30
Applicant: TOYOBO CO., LTD.
Inventor： Yohei YAMAGUCHI , Kokichi TOKUO , Shotaro NISHIO , Kiwamu KAWAI
IPC: C08J7/04 , H04M1/02 , C08J5/18 , C08J7/043 , C09D5/00 , C09D7/61 , C09D7/40 , C09D7/45 , C09D7/65 , C09D175/04 , C09D167/02
Abstract: Provided is a hard coating film for foldable displays that does not form creases or cracks in the folding portion, and that is also excellent in reducing iridescent colors (interference mottling) caused by fine cracks in an easy-to-adhere resin layer or other layers. The hard coating film for a foldable display contains a polyester film having a thickness of 10 to 80 μm, an easy-to-adhere resin layer, and a hard coating layer, the easy-to-adhere resin layer and the hard coating layer being stacked in this order on at least one surface of the polyester film, wherein the easy-to-adhere resin layer is a cured product of a composition containing a binder resin and at least one type of particles selected from the group consisting of titanium oxide particles, zirconium oxide particles, and silica particles, the at least one type of particles have a mean particle size of 5 to 150 nm, and the polyester film having the easy-to-adhere resin layer stacked thereon but not yet having the hard coating layer stacked thereon satisfies specific conditions.
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Patent Agency Ranking
公开(公告)号：US20250034342A1
公开(公告)日：2025-01-30
申请号：US18713454
申请日：2022-11-17
Applicant: TOYOBO CO., LTD.
Inventor： Taichi ZUSHI , Akira SHIMIZU , Shotaro NISHIO
Abstract: Provided is a biaxially stretched polyester film having good print visibility and a smooth surface by material-recycling a film to be discarded. Provided is also a biaxially stretched polyester film which can be used as a substrate film in a release film for producing a resin sheet. A biaxially stretched polyester film has a haze of 2% or more and 15% or less and a surface roughness SRa of at least one surface of 5 nm or more and 40 nm or less.
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公开(公告)号：US20240276862A1
公开(公告)日：2024-08-15
申请号：US18643154
申请日：2024-04-23
Applicant: TOYOBO CO., LTD.
Inventor： Shotaro NISHIO , Kiwamu KAWAI , Akira SHIMIZU , Katsuya ITO
IPC: H10K77/10 , B32B7/023 , B32B7/12 , B32B27/34 , H10K102/00
CPC classification number: H10K77/111 , B32B7/023 , B32B7/12 , B32B27/34 , B32B2255/10 , B32B2457/20 , H10K2102/311
Abstract: Provided is a polyester film for foldable displays that is unlikely to have cracks in the folding portion with the aim of providing a foldable display that is excellent in mass production applicability, and that does not have image distortion that may appear in the folding portion after the display is repeatedly folded. The polyester film has a thickness of 10 to 80 μm, a refractive index in the bending direction of 1.590 to 1.620, a refractive index in the direction of a folding portion of 1.670 to 1.700, a refractive index in the thickness direction of 1.520 or less, and a density of 1.380 g/cm3 or more, wherein the bending direction refers to a direction orthogonal to the folding portion of the polyester film to be folded.
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公开(公告)号：US20220389269A1
公开(公告)日：2022-12-08
申请号：US17625291
申请日：2020-06-30
Applicant: TOYOBO CO., LTD.
Inventor： Yohei YAMAGUCHI , Kokichi TOKUO , Shotaro NISHIO , Kiwamu KAWAI
IPC: C09D167/02 , C09D7/61 , C09D7/63 , G02B1/14
Abstract: Provided is a hard coating film for foldable displays that does not form creases or cracks in the folding portion, and that is also excellent in reducing iridescent colors (interference mottling) caused by fine cracks in an easy-to-adhere resin layer or other layers. The hard coating film for foldable displays contains a polyester film having a thickness of 10 to 80 μm, an easy-to-adhere resin layer, and a hard coating layer, the easy-to-adhere resin layer and the hard coating layer being stacked in this order on at least one surface of the polyester film, wherein the easy-to-adhere resin layer is a cured product of a composition containing at least one compound selected from the group consisting of titanium compounds and zirconium compounds and a polyester resin, and the polyester film having the easy-to-adhere resin layer stacked thereon but not yet having the hard coating layer stacked thereon satisfies characteristics within specific ranges.
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公开(公告)号：US20220085307A1
公开(公告)日：2022-03-17
申请号：US17429119
申请日：2020-01-15
Applicant: TOYOBO CO., LTD.
Inventor： Shotaro NISHIO , Kiwamu KAWAI , Akira SHIMIZU , Katsuya ITO
Abstract: Provided is a polyester film for foldable displays that is unlikely to have cracks in the folding portion with the aim of providing a foldable display that is excellent in mass production applicability, and that does not have image distortion that may appear in the folding portion after the display is repeatedly folded. The polyester film has a thickness of 10 to 80 μm, a refractive index in the bending direction of 1.590 to 1.620, a refractive index in the direction of a folding portion of 1.670 to 1.700, a refractive index in the thickness direction of 1.520 or less, and a density of 1.380 g/cm3 or more, wherein the bending direction refers to a direction orthogonal to the folding portion of the polyester film to be folded.
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公开(公告)号：US20210179794A1
公开(公告)日：2021-06-17
申请号：US17048376
申请日：2019-04-03
Applicant: TOYOBO CO., LTD.
Inventor： Kenji YOSHINO , Kiwamu KAWAI , Shotaro NISHIO
Abstract: Provided are a foldable display that is excellent in mass production applicability, and that does not have image distortion that can appear in the folding portion after the display is repeatedly folded; and a mobile device equipped with such a foldable display. Provided are a polyester film for surface protection films and a hard coating film for surface protection films for the foldable display and mobile device. The polyester film is for foldable display surface protection films, wherein the polyester film is cut in sheet form, the polyester film has a thickness of 10 to 75 μm, the polyester film has an intrinsic viscosity of 0.55 to 0.65 dl/g, and the amount of rise of a cut plane on at least one side of one or more cut end portions is 35 μm or less. The hard coating film, the foldable display, and the mobile device use the polyester film for foldable display surface protection films.
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