Patent ID: 7532284

Claim:
A method for making an optical device, comprising the steps of: (a) providing a first orienting film that is made from an orienting material having molecules, each of which has a molecular structure that is stretchable and that has a series of connected molecular units, each adjacent pair of the molecular units defining an orienting space therebetween, and forming the first orienting film on a first substrate; (b) rubbing the first orienting film so as to stretch the molecular structure of each of the molecules of the orienting material and so as to permit the molecular units of the molecular structure to be aligned along a first axis and to permit the orienting space between each adjacent pair of the molecular units of the molecular structure to be oriented in a direction parallel to a second axis, the first and second axes forming a predetermined angle therebetween; and (c) forming a first optical anisotropical layer on the first orienting film by applying a first liquid crystal film of rod-like molecules on the first orienting film which orients the rod-like molecules by virtue of spatial effect of the molecular units and the orienting spaces among the molecular units of the molecular structure on the rod-like molecules.