Color filter substrate, manufacturing method of color filter substrate and display device

Abstract

The invention relates to a color filter substrate, a manufacturing method of the color filter substrate and a display device. The color filter substrate comprises a substrate, a black matrix, a color filter layer and spacers; the substrate is divided into a plurality of sub pixel areas which are distributed in a matrix mode by the black matrix; and the color filter layer comprises N color resist patterns of different colors, the N>=3, the color resist patterns of different colors are circularly arranged in the discontinuous sub pixel areas in neighboring N row / line, at least one row / line of the single-color color resist patterns in the M neighboring sub pixel areas in the color filter layer simultaneously extends above the black matrix between corresponding the neighboring sub pixel areas to form a continuous strip-type color resist pattern, auxiliary spacers are arranged above the portion of continuous strip-type color resist pattern, which corresponds to the black matrix, the main spacers are arranged above a position between the neighboring discontinuous color resist patterns, which corresponds to the black matrix, and the M>=2. The color filter substrate can achieve the height difference control of the main spacers and the auxiliary spacers through a common mask plate and is low in cost.

Description

technical field [0001] The invention belongs to the field of display technology, and relates to a color filter substrate, a preparation method and a display device. Background technique [0002] A liquid crystal display (LCD: Liquid Crystal Display) has become a mainstream product in flat panel displays due to its small size, low power consumption, and no radiation. With the development of display technology, display devices with high transmittance, large size, low power consumption and low cost will become the future development direction. [0003] The existing liquid crystal panel includes a color filter (Color Filter) substrate and an array (Array) substrate, and a liquid crystal is arranged between the two substrates. In order to maintain the cell gap and prevent the liquid crystal from being squeezed and deformed, a spacer is usually provided between the color filter substrate and the array substrate. like figure 1 , 2 As shown, the color filter substrate in the pri...

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Problems solved by technology

However, according to the current level of photolithography technology and the properties of photoresist, only when the cross-sectional size of the top of the formed spacer is small, its height changes with the size of the exposure area of ​​the mask, such as sub-spacer The height difference design of the main spacer 61 and the auxiliary spacer 62 can only be realized when the cross-sectional size of the top of the object 62 is small (9-11 μm), and its uniformity is difficult to guarantee, and the maximum height difference that can be achieved is less than or equal to 0.5 μm, which brings great limitations to the application of color filter substrates

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