偏光子の製造方法

Japanese Patent JP7058230

B2

Provided is a method for manufacturing a polarizer which obtains a polarizer having excellent optical properties, and more particularly, to a method for manufacturing a polarizer obtained by sequentially performing a cleaning process and a drying process after at least a dyeing process, a cross-linking process, and a stretching process are performed on a polyvinylalcohol-based film. The drying process includes a process of drying the polyvinylalcohol-based film while applying tension of 0.1 to 1 N/mm in a transfer direction of the polyvinylalcohol-based film. In addition, the polyvinylalcohol-based film satisfies a condition of equation (1), y >= 0.7x + 1.77 (In the equation (1), x is greater than or equal to 5.6 and y is less than or equal to 7) when a total stretching magnification after the cleaning process is defined as x and a total stretching magnification after the drying process is defined as y.

WO/2021/039934	PHASE CONTRAST FILM AND PRODUCTION METHOD THEREFOR
JP7288878	Polarizer protective film, polarizing plate and liquid crystal display device
JP2018060227	ORGANIC EL DISPLAY DEVICE

Hagiwara Asami
Daisuke Ogome
Tomohiro Yamashita
Takuma Kuroda

JP2019015628A

April 21, 2022

January 31, 2019

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NITTO DENKO CORPORATION

G02B5/30; B29C55/02; C08J3/24; C08J7/00

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Patent Business Corporation Unias International Patent Office

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