Image element structure and production method of display panel

Abstract

The invention relates to a pixel structure of a display panel and a manufacture method thereof. The structure comprises a substrate, a first layer conductive pattern arranged on the substrate; a first insulation layer arranged on the first layer conductive pattern and the substrate, wherein, the first insulation layer is provided with at least two first openings which expose part of the two first common electrode patterns respectively; a semiconductor layer which is arranged on the first insulation layer and corresponds to the gate; a second conductive pattern which is arranged on the semiconductor layer and the first insulation layer; and a pixel electrode which is arranged on the second insulation layer, wherein, the electrode pattern and the second common electrode pattern compose a second storage capacitance. By using the pixel electrode and the common electrode pattern to compose the first storage capacitance and using the electrode pattern and the common electrode pattern to compose the second storage capacitance, the structure can greatly increase capacitance without influencing the aperture ratio.

Description

technical field [0001] The present invention relates to a pixel structure of a display panel and a manufacturing method thereof, in particular to a pixel structure of a display panel with two storage capacitors composed of three layers of electrodes and a manufacturing method thereof. Background technique [0002] In order to maintain the charge input to the pixel electrode until the next scan, a storage capacitor must be provided in the pixel structure of the liquid crystal display panel to increase the capacitance. Please refer to Figure 1. FIG. 1 is a schematic diagram of a pixel structure of a known liquid crystal display panel. As shown in FIG. 1 , the pixel structure 10 includes a substrate 12 on which a TFT region 14 and a pixel region 16 are defined. A thin film transistor is disposed in the thin film transistor region 14 , which includes a gate 18 , a gate insulating layer 20 , a semiconductor layer 22 , a heavily doped semiconductor layer 24 , a source 26 , and a...

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Problems solved by technology

[0003] From the above, it can be known that the storage capacitor Cst of the pixel structure of the known liquid crystal display panel is formed by the overlapping portion of the drain electrode 28 and the common electrode 30. Therefore, if the capacitance needs to be increased, the drain electrode 28 and the common electrode must be increased. 30 overlapping area, but this will cause the aperture ratio to drop and affect the display effect

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