Koninklijke Philips Corporation N.v.

Miho Il

Toshiya Inada

Noriyoshi Matsuura

An object of the invention is to provide a color filter and a liquid crystal display device using the filter, which can obtain well-balanced color purities within a pixel. A color filter for coloring a first light ray Lhaving a unidirectional optical path and a second light ray Lhaving a bidirectional optical path for each pixel. The color filter includes a first area portionin which the first light ray Lis caused to be transmitted and a second area portionin which the second light ray Lis caused to be transmitted, for each pixel. The first area portionand the second area portionrespectively have structures by which different coloring effects are exerted if light rays having the same optical path and the same property pass through them.

Color filter comprising unit patterns with varied densities and liquid crystal display device using the color filter, and their manufacturing methods

An object of the invention is to provide a color filter and a liquid crystal display device using it, which can acquire uniform color purity within a pixel. A color filter for coloring the first light ray Lhaving a unidirectional optical path and the second light ray Lhaving a bidirectional optical path for each pixel. This filter comprises: a step-forming layer of optically transmissive material, which can be supported by a base layer, and which is patterned for a pixel to form at least one recess-shaped portion having a bottom faceof a predetermined shape corresponding to an area wherein the first light ray Lis caused to be transmitted and a wall faceof a predetermined height; and a coloring layerC deposited on the step-forming layerand the recess-shaped portion for coloring the first and second light rays.

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Kakogawa, Japan

Miho Il