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

Abstract

The invention discloses a pixel structure of a thin film transistor-liquid crystal display and relates to a TFT-LCD technology, which is provided aiming to solve the problems of poor display effect and complex process of the current TFT-LCD. The invention adopts the technical scheme that the pixel structure comprises a grid line and a data line, wherein the grid line and the data line are intercrossed to form a pixel area, the pixel area comprises at least one thin film transistor and a pixel electrode, the source electrode of the thin film transistor is formed at the bottom layer, an active layer and a drain electrode are arranged on the source electrode in sequence, the source electrode is connected with the data line and the drain electrode is connected with the pixel electrode; the grid is formed on the side surface of the active layer and is connected with the grid line; and the side surface of the active layer and the grid part opposite to the side surface of the active layer form a vertical current channel, i.e., a side grid channel is formed. The invention also discloses a manufacturing method of the pixel structure. The invention obviously enhances the current intensity of the TFT channel, improves the display effect of the TFT-LCD and improves the manufacturing efficiency of the pixel structure of the TFT-LCD.

Description

technical field [0001] The invention relates to thin film transistor liquid crystal display (TFT-LCD, Thin Film Transistor-Liquid Crystal Display) technology, in particular to a pixel structure of a thin film transistor liquid crystal display and a manufacturing method thereof. Background technique [0002] In recent years, TFT-LCD has dominated the current flat panel display market due to its advantages of small size, light weight, low power consumption and no radiation. The TFT-LCD display screen is composed of an array glass substrate and a color film glass substrate, and the liquid crystal material is sealed after vacuuming. The TFT-LCD display forms an array of hundreds of thousands to millions of pixels, and each pixel displays images through the control of TFT. [0003] figure 1 It is an enlarged schematic diagram of the existing thin film transistor liquid crystal display pixel structure, such as figure 1 As shown, the pixel structure of the existing thin film tra...

AI Technical Summary

Problems solved by technology

[0010] Although the current 4mask design process of TFT-LCD pixel structure improves the production capacity of TFT-LCD, it still cannot meet the growing market demand

The existing source-drain planar channel structure is formed by using the gray-tone masking process or the half-tone masking process in the second masking process. Due to the unstable production conditions of this process, it is very easy to get stuck in the TFT channel. The formation of residual short circuit and over-cut open circuit seriously affects the yield

Moreover, the width-to-length ratio of the existing TFT channel has basically reached the design limit, and there is basically no room for improving the display effect of TFT-LCD.

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