POLARIZING PLATE, METHOD FOR MANUFACTURING POLARIZING PLATE, IMAGE DISPLAY DEVICE, METHOD FOR MANUFACTURING IMAGE DISPLAY DEVICE, AND METHOD FOR IMPROVING TRANSMITTANCE OF POLARIZING PLATE

摘要

The present invention provides a polarizer excellent in transmittance even if it includes a light-transmitting substrate having no in-plane phase difference. The present invention relates to a polarizer configured to be disposed on a backlight source side in an image display device, the polarizer including at least a light-transmitting substrate having in-plane birefringence and a polarizing element layered in said order from the backlight source side, the light-transmitting substrate receiving incidence of polarized light, the light-transmitting substrate and the polarizing element being layered such that a fast axis of the light-transmitting substrate along a direction in which the substrate shows a smaller refractive index and a transmission axis of the polarizing element form an angle of 0°±30° or 90°±30°.

主权项

1. A polarizer configured to be disposed on a backlight source side in an image display device, the polarizer comprising at least a light-transmitting substrate having in-plane birefringence and a polarizing element layered in said order from the backlight source side,
the light-transmitting substrate having in-plane birefringence receiving incidence of polarized light, the light-transmitting substrate having in-plane birefringence and the polarizing element being layered such that a fast axis of the light-transmitting substrate having in-plane birefringence along a direction in which the substrate shows a smaller refractive index and a transmission axis of the polarizing element form an angle of 0°±30° or 90°±30°.