Pixel structure for thin film transistor liquid crystal display and manufacturing method thereof

Abstract

The invention provides a pixel structure for a thin film transistor liquid crystal display, wherein a pixel electrode and a transparent conducting layer are formed on a substrate; a drain electrode isformed on the pixel electrode, a data scanning line and a source electrode are formed on the transparent conducting layer, the source electrode is connected with the data scanning line, and the drainelectrode is connected with the pixel electrode; an ohmic contact layer and a semiconductor layer are formed on the source electrode and the drain electrode respectively, and the contact part of theohmic contact layer and the source electrode is not connected with the contact part of the ohmic contact layer and the drain electrode; a passivation layer is formed on the parts of the source electrode and the drain electrode which are not covered by the ohmic contact layer, the part of the ohmic contact layer which is not covered by the semiconductor layer, and the semiconductor layer respectively; and a grid scanning line, a grid electrode and a grid electrode insulating layer are sequentially formed on the passivation layer. Simultaneously, the invention provides a method for manufacturingthe pixel structure for the thin film transistor liquid crystal display, and the pixel structure and the manufacturing method can save the manufacturing technological process and enlarge the storagecapacitance.

Description

technical field [0001] The invention relates to a thin film transistor (TFT) liquid crystal display (LCD) array substrate, in particular to a thin film transistor liquid crystal display pixel structure and a manufacturing method thereof. Background technique [0002] At present, the world has entered the era of information revolution, and display technology and display devices occupy a very important position in the development of information technology. Among them, due to the advantages of light weight, thin thickness, small size, no radiation, and no flicker, flat panel display has become the development direction of display technology. Among flat panel display technologies, TFT LCD has dominated the flat panel display market due to its low power consumption, relatively low manufacturing cost, and no radiation. [0003] The TFT LCD device is formed by combining the array glass substrate and the color film glass substrate. Figure 1 ~ Figure 1b Shown is the top view of a s...

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Problems solved by technology

[0008] Figure 1-Figure 1b shows the pixel structure, because there is a gate electrode insulating layer between the pixel electrode 10 and the gate scanning line 1 4 and passivation layer 8, so the storage capacitor (not shown in the figure) is small, and the jump voltage is large, which will affect the display quality of the picture

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