Array substrate, preparing method of array substrate and display device of array substrate

Abstract

The invention provides an array substrate, a preparing method of the array substrate and a display device of the array substrate. The array substrate comprises a substrate body, a thin film transistor, a grid line and a data line, wherein the thin film transistor, the grid line and the data line are arranged on the substrate body. The thin film transistor comprises a grid electrode, a source electrode, a drain electrode and a grid insulating layer arranged between the grid electrode, the source electrode and the drain electrode, wherein the grid electrode is electrically connected with the grid line, a data line embedding area is arranged in the grid insulating layer, the data line is positioned in the data line embedding area, and the data line is electrically connected with the source electrode. The array substrate is arranged in the data line embedding area of the grid insulating layer through the data line, so that no offset or small offset is generated in the edge area, corresponding to other areas in a pixel area, of the data line. Thus, no friction weak area is generated in alignment layer friction, no light leakage is generated, accordingly the black array width above the data line is reduced, and the aperture opening rate of a display panel is improved. The display device uses the array substrate to improve contract ratio and light transmittance.

Description

technical field [0001] The present invention relates to the field of display technology, in particular, to an array substrate, a manufacturing method thereof, and a display device. Background technique [0002] With the development of display technology, people have higher and higher requirements for display devices with high brightness, high contrast and low energy consumption. [0003] Currently, flat panel display devices are prevalent, and the flat panel display devices generally face the problem of how to avoid light leakage during the manufacturing process. [0004] For example, for an ADS (Advanced Super Dimension Switch, Advanced Super Dimension Switching Technology) mode liquid crystal display device, the display panel is prone to light leakage when it is in a black state, and this light leakage will cause the brightness of the black state of the display panel to be high , resulting in low contrast of the display panel; for liquid crystal display devices in HADS (H...

AI Technical Summary

Problems solved by technology

Usually, the orientation of the liquid crystal molecules in the weak friction area is poor. In the black state or white state, the liquid crystal molecules in the weak friction area may not be oriented in a specific direction, resulting in light leakage; when the array substrate and the color filter substrate are combined Finally, when the black matrix cannot cover the friction weak area, the light leakage will show up

[0006] Usually, the width of the black matrix in the corresponding color filter substrate above the gate line is relatively large, so light leakage rarely occurs near the gate line; and in order not to affect the aperture ratio of the display panel, the width of the corresponding black matrix above the data line is generally small , in the case of poor alignment between the array substrate and the color filter substrate, light leakage is often prone to occur near the data lines, especially in the areas corresponding to the edges of the data lines

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