Color filter sheet, manufacturing method for color filter sheet and liquid crystal display device

Abstract

The invention provides a color filter sheet. The color filter sheet comprises a transparent substrate, a black matrix layer and a color filter film layer. The black matrix layer is disposed on the transparent substrate, the thickness of the black matrix layer is smaller than or equal to 0.7 microns, the black matrix layer comprises a first shading layer and a second shading layer. The second shading layer is disposed on the first shading layer and is a black metal layer, and the color filter film layer is disposed on the transparent substrate and the second shading layer of the black matrix layer. The light density of the black matrix layer of the color filter sheet is high, the layer thickness is small, the angle segment difference of the color filter film layer is reduced effectively, the poor dark-state light leakage of the liquid crystal display device is reduced, and the liquid crystal display device display quality is improved. The invention further relates to a manufacturing method for the color filter sheet and a liquid crystal display device comprising the color filter sheet.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a color filter, a manufacturing method thereof and a liquid crystal display device with the color filter. Background technique [0002] The liquid crystal display device includes an opposing color filter (Color Filter) and an array substrate (Thin Film Transistor) and a liquid crystal layer (Liquid Crystal) sandwiched between them, in order to make the liquid crystal molecules of the liquid crystal layer regularly arranged A layer of alignment film (Polyimide) is coated on the surface of the color filter near the array substrate and the surface of the array substrate near the color filter, and the alignment film can be rubbed after rubbing Align the liquid crystal molecules in a fixed direction. [0003] The basic structure of the existing color filter is composed of a glass substrate (Glass Substrate), a black matrix layer (Black Matrix), a color filter film layer (Color Layer...

AI Technical Summary

Problems solved by technology

If the height H value of the angular segment difference is too large, the surface of the alignment film layer formed on the outermost layer of the color filter 10 will be uneven in the later stage. The alignment friction of the alignment film layer in the area is not in place, resulting in the liquid crystal molecules not turning or not turning in place, resulting in poor light leakage in the dark state

It is also possible to add a flat protective layer (Over Coat) between the color filter film layer 13 and the alignment film layer to make the surface of the alignment film layer more flat, but the flat protective layer will reduce the transmittance of the liquid crystal display device.

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