Colored filter board

Abstract

The invention relates to a color filter plate which comprises a glass substrate, a blue light filter and a red light filter which is formed on the glass substrate, wherein, the red light filter is partially overlapped with the blue light filter to form a shading region. The color filter plate does not need a manufacturing process of a black matrix in a black filter plate, and lower the production cost of the color filter plate.

Description

technical field [0001] The invention relates to a color filter plate, in particular to a color filter plate without a black matrix. Background technique [0002] The color filter is mainly composed of red (R), green (G), blue (B) pixels that can represent full colors, and a black matrix (Black Matrix) that improves pixel contrast. In the production of Thin Film Transisitor Liquid Cyrstal Display (TFT-LCD) panels, in order to maintain the uniformity of the interval between the color filter plate and the glass substrate, it is also necessary to make photosensitive spacers on the color filter plate ( Photo Spacer). The schematic diagram of the color filter plate structure is as follows figure 1 As shown, it includes a glass substrate 1, a blue color filter 3, a red color filter 4, a green color filter 5 positioned on the glass substrate 1, and a black matrix 2 positioned between the above-mentioned three color filters, The cover layer 6 located on the above-mentioned three-c...

AI Technical Summary

Problems solved by technology

At present, the black matrix formed by using the heavy metal chromium (Cr) is the mainstream, but it has the following disadvantages: the cost of the chrome-plated metal film layer is high; the reflectivity of the chromium metal film layer is high; the black matrix pattern (pattern) produced Environmental Pollution by Wastes of Heavy Metal Chromium

The black matrix formed by electroless nickel plating has the following disadvantages: high opacity (high optical density); low reflectivity in the visible wavelength range

In terms of process, the color filter plate based on the existing technology needs to specially manufacture a layer of black matrix, so the production cycle will be lengthened, and the existence of this process will also increase the cost of the color filter plate.

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