Optical sheet
AssigneeDai Nippon Printing Co., Ltd.
InventorsTakashi Kodama, Gen Furui, Makoto Honda
Life of this patent
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Abstract
There is provided an optical sheet for use as a display device surface, which has a functional layer on at least one side of a transparent base material and has a diffusion factor on the outer surface and/or interior of the functional layer, wherein the relationship represented by the following formula (I) is satisfied. 1.92<γ<5.11 (I) γ: The diffusion angle representing 1/10 of the diffusion intensity, obtained by extrapolating a straight line connecting the reflection intensity at diffuse regular reflection ±2 and the reflection intensity at diffuse regular reflection ±1, to the diffuse regular reflection angle.
Claims12
An optical sheet for use as a display device surface, which has a functional layer on at least one side of a transparent base material and has a diffusion factor on the outer surface and/or interior of the functional layer, wherein the relationship represented by the following formula (I) is satisfied,
- 1.92<γ<5.11 (I)
- γ:
- The diffusion angle representing 1/10 of the diffusion intensity, obtained by extrapolating a straight line connecting the reflection intensity at diffuse regular reflection ±2 and the reflection intensity at diffuse regular reflection ±1, to the diffuse regular reflection angle.
Dependencies are inferred from the claim text.