Thin film transistor array substrate and manufacturing method thereof

Abstract

The invention provides a thin film transistor array substrate and a making method thereof.The thin film transistor array substrate comprises a substratum, storage capacitor electrode wires, a first passivation layer, scanning lines, a gate insulating layer, data lines, a second passivation layer, pixel electrodes and storage capacitors, wherein the storage capacitor electrode wires are formed on the substratum; the first passivation layer covers the storage capacitor electrode wires; the scanning lines are formed on the first passivation layer; the gate insulating layer covers the scanning lines; the data lines are formed on the gate insulating layer, and scanning lines and the data lines are arranged in an intersecting mode to define a plurality of pixel areas, and the storage capacitor electrode wires extend in the direction of the data lines; the second passivation layer covers the data lines; the pixel electrodes are formed in the pixel areas, and each storage capacitor is formed between the corresponding storage capacitor electrode wire and the corresponding pixel electrode.By means of the thin film transistor array substrate and the making method thereof, stray capacitance generated between the corresponding data line and the corresponding storage capacitor electrode wire can be lowered, so that the capacitance resistance load of the data lines is lowered, signal delay is reduced, the displayed image quality is improved, and the aperture opening ratio of pixels can be further raised.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a thin film transistor array substrate and a manufacturing method thereof. 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 schematic plan view of a pixel structure of one of the liquid crystal display panels, figure 2 for figure 1 Schematic diagram of the cross-sectional structure along the line II-II, image 3 for figure 1 The schematic diagram of the cross-sectional structure along the line III-III in the middle, for the sake of clarity, these figures have ad...

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Problems solved by technology

[0010] The object of the present invention is to provide a thin-film transistor array substrate and its manufacturing method to solve the problem that the aperture ratio of the pixel is reduced due to the wide light-shielding layer and the large parasitic capacitance between the data line and the storage capacitor electrode line affects the display of the screen

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