Optical film, polarizer, image display device and method for manufacturing optical film
A manufacturing method and technology of optical films, which are applied in the fields of polarizers, retardation films, liquid crystal panels, and liquid crystal display devices, can solve the problems of curling or dimensional changes becoming larger, and the appearance of curling being deteriorated.
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[0398] The preparation of the dopant solution of the present invention is not particularly limited to its dissolution method, and it can be carried out at room temperature, further utilizing a cooling dissolution method or a high temperature dissolution method, and a combination of these methods. Regarding the preparation of the dopant solution in the present invention, and then the steps of concentration and filtration of the solution accompanied by the dissolution step, it is preferred to use the "Technical Report of the Invention Association" (public technical number 2001-1745, issued on March 15, 2001) , Invention Association) detailed manufacturing steps described on pages 22 to 25.
[0399] (casting, drying, coiling steps)
[0400] Hereinafter, a method for producing a film using a dopant solution of the present invention will be described. The method and equipment for manufacturing the optical film of the present invention can use the solution casting film forming meth...
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