Array substrate, preparation method of array substrate, display panel and display device

Abstract

The invention provides an array substrate, a preparation method of the array substrate, a display panel and a display device. The array substrate comprises a substrate as well as multiple pixel units, multiple grid lines and multiple common electrode wires which are distributed on the substrate in an array, wherein each row of pixel units correspond to one grid line and one common electrode wire; the grid line and the common electrode wire corresponding to each row of pixel units are located on the same side of the row of pixel units and are in parallel and spaced. The array substrate further comprises light-shielding strips, wherein each light-shielding strip corresponds to a spacer region between the corresponding grid line and the corresponding common electrode wire, and the orthographic projection of each light-shielding strip shields the corresponding spacer region, so that the spacer region between each grid line and the corresponding common electrode wire cannot leak light when not shielded by black matrixes on a color film substrate, and light leakage of the array substrate is avoided.

Description

technical field [0001] The present invention relates to the field of display technology, in particular, to an array substrate and a preparation method thereof, a display panel and a display device. Background technique [0002] As thin film transistor liquid crystal display panels (TFT-LCDs) are used in more and more fields, the requirements for the reliability of the panels are also getting higher and higher. [0003] The liquid crystal panel includes a color filter substrate and an array substrate. Generally, multiple common electrode lines are provided in the array substrate, and the common electrode lines are parallel to the gate lines and distributed on the same side of each row of pixel units in a one-to-one correspondence. A spacer is provided between a common electrode line corresponding to each row of pixel units and a gate line, and the spacer can transmit light, but the spacer is usually blocked by the black matrix (BM) on the color filter substrate, so that the l...

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Problems solved by technology

[0004] Reliability requirements for the panel include pressure test requirements, and when the panel is pressed by a large pressure, the color filter substrate 7 (CF) will be offset relative to the array substrate 8 (TFT), such as figure 1 As shown, the experiment proves that in the liquid crystal display panel of the ADS mode, the long side direction of the pixels along the ADS mode (advanced ultra-dimensional field switching mode) display panel is seriously shifted, so that the black matrix 71 (BM) cannot block the gate line 3 ( Gate line) and the common electrode line 4 (Vcom line) between the interval area 6, thus causing poor light leakage on the macro picture

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