Patent ID: 7202097
Filing Date: 2007-04-10
Classification: C08J,G02B

Abstract:
1. A light polarizing film of a structure comprising anisotropic electroconductive portions, and polymer dielectric portions, obtained by a process comprising the processes of: forming a composite film obtained by forming an electroconductive film on the entire surface on one side or both sides of a film (1) or (2), having a higher-order structure; and causing the composite film to undergo drawing before thermal setting, wherein a length of the structure comprising the anisotropic electroconductive portions, and the polymer dielectric portions, in a shorter direction, is shorter than a wavelength of an incident light to be polarized while a length of the same, in a longer direction, is longer than the wavelength of the incident light to be polarized; said film (1) being a film having the higher-order structure wherein crystallized parts obtained by causing crystalline polymer to undergo drawing and heat treatment at a temperature not higher than a melting point and not lower than a glass transition point, and amorphous parts are alternately linked with each other; and said film (2) being a film having the higher-order structure, selected from the group of films (a) to (c), wherein phases A and B are alternately linked with each other in a drawing direction;