Display device and gate drive circuit thereof
A gate drive circuit and display device technology, applied to static indicators, instruments, etc., can solve problems such as damage, increase in frame size and length of flexible circuit boards, and high cost
Active Publication Date: 2019-07-02
CHENGDU VISTAR OPTEOLECTRONICS CO LTD
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- Summary
- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
[0010] Disadvantages: If this method is used to monitor the output of each stage, the output of each stage must be connected to the flexible circuit board, which increases the size of the frame and the length of the flexible circuit board, and the appearance of the product cannot meet customer needs
[0012] Disadvantages: high cost, and all destructive tests, if the problem is not in the gate drive circuit, the phenomenon cannot be restored
Method used
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Embodiment Construction
[0037] Further description will be given below in conjunction with the accompanying drawings and embodiments.
[0038] figure 2 It is a schematic structural diagram of a gate driving circuit of an embodiment. The gate driving circuit is used for receiving control signals and outputting scan signals in the display device. The gate driving circuit 10 includes a plurality of cascaded scan signal output units 110 and a switch unit 120 connected to one end of the scan signal output unit 110 outputting a scan signal, and each scan signal output unit 110 is connected to one switch unit 120 . When the gate drive circuit 10 outputs the scan signal, if it is a progressive scan, it will sequentially output the scan signal at one end of each scan signal output unit 110 outputting the scan signal, that is, OUT1, OUT2, OUT3, . . . The scan signals are output sequentially.
[0039] The switch unit 120 is a three-terminal device, which has a first end 121 connected to one end of the scan ...
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The invention relates to a display device and a gate drive circuit thereof. The gate drive circuit, which is used for receiving control signals and outputting scanning signals, comprises multiple cascaded scanning signal output units and switching units connected with one ends of scanning signals output by the scanning signal output units respectively. Each scanning signal output unit is connected with one switching unit. The switching units are three-terminal apparatuses. Each switching unit is provided with a first terminal connected with one end of the scanning signal output by the corresponding scanning signal output unit, a second terminal serving as a test access point, and a third terminal controlling whether or not the first terminal and the second terminal are switched on. A test signal is sent to the third terminal of each switching unit by the corresponding scanning signal output unit. The second terminals of all the switching units are connected together. According to the display device and the gate drive circuit thereof, a fault can be tested conveniently and quickly.
Description
technical field [0001] The invention relates to the field of display technology, in particular to a display device and a driving circuit thereof. Background technique [0002] figure 1 It is a schematic diagram of the structure of the display device. The display device 11 includes a data driving circuit 12 , a gate driving circuit 13 and a pixel circuit 101 . Wherein the pixel circuit 101 includes a plurality of pixel unit circuits R, G, B, and each pixel unit circuit is connected with the data line 129 of the data driving circuit 12 for receiving the data signal provided by the data driving circuit 12; each pixel unit circuit Both are connected to the scanning line 139 of the gate driving circuit 13 for receiving the scanning signal provided by the gate driving circuit 13 . The pixel circuit 101 makes the sub-pixels emit light according to the data signal provided by the data driving circuit 12 and the scanning signal provided by the gate driving circuit 13, thereby disp...
Claims
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IPC IPC(8): G09G3/3266G09G3/00
CPCG09G3/006G09G3/3266
Inventor 宋艳芹张婷婷胡思明杨楠
Owner CHENGDU VISTAR OPTEOLECTRONICS CO LTD