Display substrate, manufacturing method thereof, and display device

Abstract

The invention relates to a display substrate, comprising a colored-film layer, comprising a plurality of sub pixels, a common electrode which is arranged on the colored-film layer and corresponds to a junction of adjacent sub pixels in the plurality of sub pixels, and a black matrix which is arranged on the common electrode. According to the technical solution of the invention, by arranging the black matrix at the common electrode, because the common electrode corresponds to the junction of the adjacent sub pixels, namely that the black matrix on the common electrode corresponds the junction of the adjacent sub pixels, a separating effect of the black matrix to the adjacent sub pixels is ensured. Because the black matrix is far away from a thin film transistor, the influence to electrical properties of the thin film transistor is avoided.

Description

technical field [0001] The present invention relates to the field of display technology, in particular, to a display substrate, a display device and a method for manufacturing a display substrate. Background technique [0002] COA stands for Color-filter on Array, which is a technology that integrates the color filter layer and the array (Array) substrate. That is, the color photoresist is coated on the completed array (Array) to form a color filter layer, which can increase the aperture ratio of the pixel and realize self-alignment between the color filter layer and the array substrate. [0003] However, the black matrix used in the existing COA technology is mainly composed of organic resin coated with carbon black particles. When the black matrix coated with carbon black particles is placed on the array substrate, the process is complicated, and as figure 1 As shown, the common electrode 1 in the prior art is covered on the array substrate, such as figure 2 and image...

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Problems solved by technology

[0003] However, the black matrix used in the existing COA technology is mainly composed of organic resin coated with carbon black particles. When the black matrix coated with carbon black particles is placed on the array substrate, the process is complicated, and as figure 1 As shown, the common electrode 1 in the prior art is covered on the array substrate, such as figure 2 and image 3 As shown, the black matrix 2, the data line 8 and the gate line 9 are only separated by one or two layer structures, which are relatively close to the TFT (thin film transistor), which is likely to affect the TFT performance of the array substrate, resulting in a reduction in production yield.

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