GOA overhaul circuit
A circuit and electrical connection technology, applied in the field of GOA overhaul circuits, can solve the problems of prone to failure, unfavorable panel repair, failure analysis and design improvement, and lack of repair methods for GOA circuits, so as to ensure yield, fast and accurate detection. Effect
Inactive Publication Date: 2019-03-01
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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Problems solved by technology
[0005] With the development of display panels, people pursue larger screens, higher resolutions, and more exciting visual effects, which undoubtedly put forward higher requirements for panel manufacturing, materials, and processes. Due to the complex structure of the GOA circuit itself, resulting in The GOA circuit is prone to failure after the production is completed. In the existing technology, there is currently no effective maintenance method for the GOA circuit, which is not conducive to the later repair of the panel, fault analysis and design improvement.
Method used
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[0044] In order to further illustrate the technical means adopted by the present invention and its effects, the following describes in detail in conjunction with preferred embodiments of the present invention and accompanying drawings.
[0045] see figure 1 , the present invention provides a GOA maintenance circuit, including a signal detection unit 1, a multi-level GOA unit 2, a plurality of detection lines 3 and a plurality of control units 4;
[0046] The multiple detection wires 3 are arranged in parallel and at intervals, one end of each detection wire 3 is electrically connected to a first-level GOA unit 2, and the other end is correspondingly connected to a control unit 4, and each control unit 4 is connected to the The signal detection unit 1 is electrically connected;
[0047] The GOA unit 2 is used to output a scanning signal Scan;
[0048] The control unit 4 is used to conduct the detection wiring 3 and the signal detection unit 1 when detecting the GOA unit 2 con...
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The invention provides a GOA (gate driver on array) overhaul circuit. The GOA overhaul circuit includes a signal detection unit, multiple levels of GOA units, a plurality of detection lines and a plurality of control units. The plurality of detection lines are in parallel spaced arrangement, one end of each detection line is in electrical connection with a level of GOA unit correspondingly, and the other end is connected to a control unit correspondingly, and each control unit is in electrical connection with the signal detection unit. The GOA units are used for outputting scanning signals. The control units are used for conducting the detection lines and the signal detection unit during detection of the GOA units connected to the detection lines corresponding to the control units so as toinput the scanning signals output by the GOA units into the signal detection unit. The signal detection unit is used for judging whether the GOA units outputting the scanning signals break down according to the waveforms of the input scanning signals, can quickly and accurately detect the fault of the GOA circuit and ensure the yield rate of the GOA circuit.
Description
technical field [0001] The invention relates to the field of display technology, in particular to a GOA maintenance circuit. Background technique [0002] A Liquid Crystal Display (LCD) has many advantages such as a thin body, power saving, and no radiation, and has been widely used. Such as: LCD TV, mobile phone, personal digital assistant (PDA), digital camera, computer screen or notebook computer screen, etc., occupy a dominant position in the field of flat panel display. [0003] Most of the liquid crystal displays currently on the market are backlight liquid crystal displays, which include a liquid crystal display panel and a backlight module. The working principle of the liquid crystal display panel is to pour liquid crystal molecules between the thin film transistor array substrate (ThinFilm Transistor Array Substrate, TFT Array Substrate) and the color filter substrate (ColorFilter, CF), and apply a driving voltage on the two substrates to Control the rotation dire...
Claims
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Patent Timeline
Login to View More IPC IPC(8): G09G3/00G09G3/36G01R31/28
CPCG01R31/2825G01R31/2836G09G3/006G09G3/36
Inventor 张娣
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD