Patent ID: 7123328
Filing Date: 2006-10-17
Classification: G02B,G02F

Abstract:
1. A polarizing plate with optical compensation function, comprising at least two optically compensating layers, the optically compensating layers comprising: an optically compensating A-layer formed of a polymer film, satisfying conditions represented by formulae (I) and (II) below; and an optically compensating B-layer formed of a non-liquid crystalline polymer film, satisfying conditions represented by formulae (III) to (V) below, in the formulae (I) and (II), where nx a , ny a , and nz a represent refractive indices in an X-axis direction, a Y-axis direction, and a Z-axis direction in the optically compensating A-layer, respectively, with the X-axis direction being an axial direction exhibiting a maximum refractive index within a plane of the optically compensating A-layer, the Y-axis direction being an axial direction perpendicular to the X-axis within the plane, the Z-axis direction being a thickness direction perpendicular to the X-axis and the Y-axis, and d a represents a thickness of the optically compensating A-layer, in the formulae (III) to (V), where nx b , ny b , and nz b represent refractive indices in an X-axis direction, a Y-axis direction, and a Z-axis direction in the optically compensating B-layer, respectively, with the X-axis direction being an axial direction exhibiting a maximum refractive index within a plane of the optically compensating B-layer, the Y-axis direction being an axial direction perpendicular to the X-axis within the plane, the Z-axis direction being a thickness direction perpendicular to the X-axis and the Y-axis, and d b represents a thickness of the optically compensating B-layer.