Patent Number: 6,297,908

Title: Directional light-diffusing film, a method of manufacturing same, and a display device that uses same

Abstract: A directional light-diffusing film is formed by minute light-transmitting regions which pass light and minute light-diffusing regions which diffuse light, these light-transmitting regions and light-diffusing regions being arranged in an alternating pattern on a surface of a transparent base material film in either the direction of one dimension or the direction of two dimensions. Light which passes through the light-diffusing regions is diffused, while light that passes through the light-transmitting regions is transmitted without diffusion, and when this directional light-diffusing film is mounted to the light-exiting surface of a liquid-crystal display or the like, there is an increase in the amount of undiffused light that reaches the eye, and prevention of defocusing of the display image.

Inventors: Suga; Taiji (Shinjuku-ku, JP)

Assignee: Dai Nippon Printing Co., Ltd.

International Classification: G02B 5/02 (20060101); G02F 1/1335 (20060101); G02F 1/13 (20060101); G02B 005/02 (); G02F 001/133 (); F21V 007/04 ()

Expiration Date: 10/02/2018