Thin film transistor array substrate, manufacturing method and liquid crystal display panel

Abstract

Provided are a thin film transistor array substrate, a manufacturing method and a liquid crystal display panel. The thin film transistor array substrate comprises a substrate, a first metal layer, a first insulation layer, an active layer, a second metal layer, a second insulation layer, a third metal layer, a third insulation layer and a pixel electrode. The first metal layer is formed on the substrate and comprises a scanning line and a grid. The first metal layer is covered with the first insulation layer, and the active layer is formed on the first insulation layer. The second metal layer is formed on the first insulation layer and comprises a source electrode and a drain electrode. The second metal layer is covered with the second insulation layer, and a first contact hole and a second contact hole are formed in the second insulation layer. The third metal layer is formed on the second insulation layer and comprises a data line and a conductive block, the data line is connected with the source electrode through the first contact hole, and the conductive block is connected with the drain electrode through the second contact hole. The third metal layer is covered with the third insulation layer, and a third contact hole is formed in the third insulation layer. The pixel electrode is formed on the third insulation layer, and the pixel electrode is connected with the conductive block through the third contact hole.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a thin film transistor array substrate, a manufacturing method and a liquid crystal display panel. Background technique [0002] With the development of display technology, liquid crystal display panels (Liquid Crystal Display, LCD) are more and more popular due to their advantages of lightness and low radiation. The liquid crystal display panel includes an opposite color filter substrate (color filter, CF) and a thin film transistor array substrate (TFT array), and a liquid crystal layer (LC layer) sandwiched between them. [0003] figure 1 is a partial schematic diagram of a thin film transistor array substrate in the prior art, figure 2 for figure 1 Schematic cross-section along II-II direction, such as Figure 1-2 As shown, the thin film transistor array substrate includes scanning lines 11, data lines 12 and storage capacitor lines 13, and a plurality of ...

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Problems solved by technology

[0006] In the existing technology, the distance between the data line 12 and the scanning line 11 and between the data line 12 and the storage capacitor line 13 is determined by the first insulating layer 16. In order to reduce the capacitive load of the data line 12, it can be considered to increase the first insulating layer 16. The thickness of the first insulating layer 16, but because the data line 12 and the source electrode 142 and the drain electrode 143 of the thin film transistor 14 are in the same layer, increasing the thickness of the first insulating layer 16 will affect the driving capability of the thin film transistor 14 at the same time

Therefore, the capacitive load of the data line 12 in the prior art is relatively large, resulting in a large signal delay, which cannot achieve the purpose of reducing power consumption and affects the display effect of the screen.

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