Patent ID: 8865313
Filing Date: 2014-10-21
Classification: B05D,C08G,C08L,C09D,C09K,G02B,G02F,Y10T

Abstract:
1. An optical film comprising: a substrate having front and rear surfaces, and at least one solid optical retardation layer on the front surface of the substrate, wherein the solid optical retardation layer comprises rigid rod-like macromolecules comprising n organic units of a first type having general structural formula I wherein the organic units of the first type and the organic units of the second type are contained in the rigid rod-like macromolecules in random or orderly sequence, wherein the rigid rod-like macromolecules are isotropically oriented in the plane of the substrate, the solid optical retardation layer is a negative C-type, and the solid optical retardation layer is substantially transparent to electromagnetic radiation in the visible spectral range.