POLYETHYLENE TEREPHTHALATE-BASED RESIN FILM, AND POLARIZER, TRANSPARENT CONDUCTIVE FILM, TOUCH PANEL, AND IMAGE DISPLAY DEVICE USING SAME

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United States of America Patent

APP PUB NO 20230408734A1
SERIAL NO

18249933

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Abstract

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An object is to provide a polyethylene terephthalate-based resin film that has excellent processing suitability and that particularly can effectively suppress the occurrence of cleavage in the film layer of a portion cut with a knife. Another object is to provide a polarizer, a transparent conductive film, a touch panel, and image display devices such as a liquid crystal display device and an organic EL display device, all of which use the polyethylene terephthalate-based resin film. A polyethylene terephthalate-based resin film satisfying the following (1) and (2): (1) the polyethylene terephthalate-based resin film has a retardation of 3000 to 30000 nm; and (2) the polyethylene terephthalate-based resin film has an amorphous orientation parameter of 0.330 or more as measured by an ATR-FTIR method.

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Patent Owner(s)

Patent OwnerAddress
TOYOBO CO LTDJAPAN'S OSAKA OSAKA NORTH DOUSHIMA HAJI CHOME 2 TIMES 8

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
ABE, Takahisa Tsuruga, JP 14 63
IKEDA, Yuka Otsu, JP 5 29
SAWADA, Kaoru Otsu, JP 3 5

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