Diffusing film and liquid crystal display element employing the same
AssigneeShiseido Company, Ltd.
InventorsTsuyoshi Miyamoto, Asa Kimura
Life of this patent
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Abstract
This invention is to provide a diffusing film, a lighting unit, and a liquid crystal display element which can efficiently uses a light from a light source and which can obtain a beautiful image. A diffusing film comprising a powder which diffuses an incident light and which has an interference color of the same wave range with an absorption wave range, in uniformly and a diffusing film comprising two or more of a powder whose interference colors are complementary to each other, and a liquid crystal display element using the same.
Claims12
A diffusing film comprising two or more of a powder which have an interference color complementary to each other,
- wherein an amount of said powder is 0.01 g/m.sup.2 to 100 g/m.sup.2 in the case where said powder is set on a substrate.
A diffusing film comprising two or more of a powder which have an interference color complementary to each other, wherein a powder that has the interference color which is in a complementary relation with the other powder, was added 10% to 90% with respect to the other powder, so as that a transmitted light at said diffusing film can be obtained with white light;
- wherein an amount of said powder is 0.01 g/m.sub.2 to 100 g/m.sup.2 in the case where said powder is set on a substrate.
A liquid crystal display element comprising:
- a light source which irradiates a light flux;
- a diffusing film which comprises two or more of a powder which have an interference color which are complementary to each other,
- wherein an amount of said powder is 0.01 g/m.sub.2 to 100 g/m.sup.2 in the case where said powder is set on a substrate;
- and
- a liquid crystal panel which controls light transmittance of the light flux from said diffusing film by changing a voltage which applies onto a liquid crystal layer.
Dependencies are inferred from the claim text.