Light diffusing sheet having a layer incorporated with light dif

Details Light diffusing sheet having a layer incorporated with light dif Light diffusing sheet having a layer incorporated with light dif

1997-05-07

1999-12-14

Sikes, William L.

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

349 64, 359500, 359599, G02F 11335, G02B 530, G02B 502

Patent

active

06002464&

ABSTRACT:
A light diffusing sheet including a clear film (#1) and two light diffusing layers (#2 and #3) formed consecutively thereon. The diffusing sheet is characterized in that the first light diffusing layer (#2) is a film of clear resin incorporated with a light-diffusing material, and the second light diffusing layer (#3) is a film of clear resin having a corrugated surface structure. The first light diffusing layer (#2) has a thickness of 10 .mu.m to 500 .mu.m and the light diffusing material has a weight concentration of less than 3%. The difference in refractive index between the clear resin and light diffusing material is 0.01 .ltoreq. .DELTA.n .ltoreq. 0.12, and the average particle diameter of the light diffusing material is between 4 .mu.m to 30 .mu.m.

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Patent Abstracts of Japan, vol. 096, No. 005, May 31, 1996, JP 08-006160, Jan. 12, 1996.

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