TFT-LCD array substrate structure and preparation method thereof

Abstract

The invention relates to a TFT-LCD array substrate structure and a preparation method thereof. The TFT-LCD array substrate structure comprises gate lines and data lines which define a pixel area; thin film transistors are formed at crossing positions of the gate lines and the data lines, and are connected with pixel electrodes formed in the pixel area; waved bases used for forming the gate lines and / or the data lines are formed between the gate lines or the data lines and a substrate; the shape of the cross section of each waved base along the width direction is waved; and the gate lines and / or data lines formed on the waved bases are waved gate lines and / or waved data lines. The TFT-LCD array substrate structure can reduce the line resistance of the gate lines and / or the data lines, is favorable for reducing signal delay, and cannot reduce the aperture ratio of a TFT-LCD; or the aperture ratio of the TFT-LCD can be increased to improve product performance while the critical dimensionof the gate lines or the data lines is maintained.

Description

technical field [0001] The invention relates to the field of display, in particular to a thin film transistor liquid crystal display (ThinFilm Transistor Liquid Crystal Display, TFT-LCD for short) array substrate structure and a preparation method thereof. Background technique [0002] Thin film transistor liquid crystal display (TFT-LCD) has the characteristics of small size, low power consumption, and no radiation, and occupies a dominant position in the current flat panel display market. For TFT-LCD, the array substrate (Array) structure and manufacturing process have an important impact on product performance. Among them, parameters such as signal delay (RC Delay) and aperture ratio (Aperture Ratio) of the oscillation circuit are important to measure product performance. parameter. In order to meet the market demand, large-size display is one of the development trends of TFT-LCD; and large-size TFT-LCD puts forward higher requirements on various performance indicators o...

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Problems solved by technology

[0004] However, the inventor found in the process of realizing the present invention that although increasing the cross-sectional width of the gate lines or data lines in the array substrate along the width direction in the prior art can alleviate the signal delay, when the area of ​​the array substrate is the same, increasing the gate line or data line The cross-sectional width of the line along the width direction will reduce the effective display area of ​​the array substrate, resulting in a decrease in the aperture ratio (Aperture Ratio) of the TFT-LCD.

It can be seen that at least there are technical defects such as reducing the aperture ratio of TFT-LCD in the prior art

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