Thin-film transistor array substrate and repairing method
A thin film transistor and array substrate technology, applied in the field of liquid crystal display, can solve the problems of time-consuming and energy-consuming, cumbersome steps, affecting the image imaging quality, etc., and achieve the effects of small impact, simple and fast operation, and high practicability
Active Publication Date: 2014-02-26
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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Problems solved by technology
This traditional repair method is cumbersome in operation, requiring at least four times of welding and five times of cutting (such as figure 1 As shown), it consumes time and energy, and because the pixel unit is completely invalid, it becomes a dark spot, which will affect the image quality of the picture
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[0040] In order to further illustrate the purpose, technical scheme and technical effect of the present invention, the following refers to the large-size liquid crystal display panel thin film transistor array substrate and the 2G1D pixel unit structure arranged on it in the prior art (the pixel unit and two scanning lines and one data The equivalent circuit diagram of wire electrical connection) introduces in detail the working principle and implementation of the repair method provided by the present invention, as well as better technical effects compared with the prior art. It should be noted that although the present invention is described with respect to the 2G1D pixel unit structure, it should not be limited thereto. The structure of pixel units designed by different manufacturers is not the same, and there will be many deformations. For example, there is also a 1G2D pixel unit structure (the pixel unit is electrically connected to one scanning line and two data lines), so...
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The invention relates to a thin-film transistor array substrate and a repairing method. The array substrate comprises a substrate body; multiple common-electrode wirings are arranged on the substrate body, and multiple scanning lines and data lines are arranged on the substrate body in a staggered manner to form multiple pixel regions. Multiple pixel units are arranged in the pixel regions; each pixel unit comprises a primary pixel electrode, a secondary pixel electrode and a charge sharing unit electrically connected with the primary pixel electrode and the secondary pixel electrode. The charge sharing unit comprises charge capacitors for generation of voltage difference between the primary pixel electrodes and the secondary pixel electrodes. If the charge capacitors are defective capacitors, a circuit for connecting upper electrodes or lower electrodes with the peripheries is cut off. Different from the conventional repairing means, the repairing method is easy and realizes repairing within a short time; the repaired pixel units can work normally and only small affection is caused to the display function of the whole pixel unit though the large-visual-angle color cast cannot be overcome effectively.
Description
technical field [0001] The invention relates to liquid crystal display technology, in particular to a thin film transistor array substrate of a large-size liquid crystal display panel and a repair method. Background technique [0002] Thin film transistor liquid crystal display panel (TFT LCD) has become the mainstream product in the current market due to its excellent performance. A TFT-LCD panel usually consists of a TFT array substrate, a color filter substrate and a liquid crystal layer. Wherein, a plurality of pixel units (Pixel) are arranged in an array on the thin film transistor array substrate, and each pixel unit includes at least one thin film transistor, and a pixel electrode (Pixel Electrode) corresponding to the thin film transistor. The thin film transistor is used as a switching element to start the operation of the pixel unit, and is connected to the scan line (Scan Line) and the data line (Data Line). Driven by the scan signal, the voltage of the data sign...
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IPC IPC(8): G02F1/1362G02F1/1368G02F1/13H01L27/12
CPCG02F1/136259G02F1/136213H01L27/124H01L27/1255
Inventor 衣志光张骢泷
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD