OPTICAL LAYERED BODY, POLARIZER, METHOD FOR PRODUCING POLARIZER, IMAGE DISPLAY DEVICE, METHOD FOR PRODUCING IMAGE DISPLAY DEVICE, AND METHOD FOR IMPROVING VISIBILITY OF IMAGE DISPLAY DEVICE

摘要

The present invention provides a method for improving visibility of an image display device which is capable of providing an image display device excellent in anti-reflection properties and bright-field contrast even using an optical layered body including a light-transmitting substrate having in-plane birefringence, such as a polyester film. The method of the present invention is a method for improving visibility of an image display device that has an optical layered body including a light-transmitting substrate having in-plane birefringence and an optical functional layer disposed on one surface of the substrate. The method includes the step of disposing the optical layered body such that the slow axis showing a greater refractive index of the light-transmitting substrate is in parallel with the vertical direction of a display screen of the image display device.

主权项

1. An optical layered body configured to be disposed on a surface of an image display device, the optical layered body comprising:
a light-transmitting substrate having in-plane birefringence; and an optical functional layer disposed on one surface of the light-transmitting substrate, the light-transmitting substrate having a slow axis that is along the direction showing a greater refractive index, and the optical layered body being configured to be disposed on a display screen of the image display device such that an angle between the slow axis of the light-transmitting substrate and the vertical direction of the display screen is 0°±30°.