Protective, diffusive film and process for producing the same
AssigneeDai Nippon Printing Co., Ltd.
InventorsTadahiro Masaki, Fumihiro Arakawa
Life of this patent
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Abstract
There is provided a protective, diffusive film for use in a surface light source device provided with a lens film, said protective, diffusive film comprising: a transparent substrate layer; and a resin layer provided on the top surface and the under surface of the transparent substrate layer, the resin layers being free from fine particles and having fine concaves and convexes on the surface thereof, the difference in coverage between the resin layer provided on the top surface of the transparent substrate layer and the resin layer provided on the under surface of the transparent substrate layer being in the range of −20% to +20% in terms of the percentage of the coverage of one of the resin layers to the coverage of the other resin layer.
Claims8
A protective, diffusive film for use in a surface light source device provided with a lens film, said protective, diffusive film comprising:
- a transparent substrate layer;
- and
- a resin layer provided on the top surface and the under surface of the transparent substrate layer,
- said resin layers being free from fine particles and having fine concaves and convexes on the surface thereof,
- the difference in coverage between the resin layer provided on the top surface of the transparent substrate layer and the resin layer provided on the under surface of the transparent substrate layer being in the range of −20% to +20% in terms of the percentage of the coverage of one of the resin layers to the coverage of the other resin layer.
Dependencies are inferred from the claim text.