Display panel, detection method thereof, and display device
A display panel and detection signal technology, applied to static indicators, instruments, etc., to achieve the effect of simplifying structure, reducing quantity and reducing cost
Active Publication Date: 2022-06-21
XIAMEN TIANMA MICRO ELECTRONICS
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- Application Information
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Problems solved by technology
[0004] However, the existing technology can only detect one of the scanning directions of the GOA circuit with bidirectional scanning function, and cannot detect the forward scanning function and reverse scanning function of the GOA circuit with bidirectional scanning function.
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[0042] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, the drawings only show some but not all structures related to the present invention.
[0043]As described in the background art, when detecting a scan driving circuit with a bidirectional scanning function, only setting one detection signal pin can only detect the forward scan or reverse scan of the scan driving circuit. For the detection of the forward scan and reverse scan of the scan drive circuit, it is necessary to set the forward scan detection pin and the reverse scan detection pin respectively, which will increase the number of detection pins set in the display panel, so that Relatively increasing the number...
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The embodiment of the invention discloses a display panel, a detection method thereof, and a display device. The display panel is provided with a scanning drive circuit, a plurality of signal pins and a first gate circuit; the plurality of signal pins include a detection signal pin and start signal pins; the scan drive circuit includes a plurality of cascaded scan drive units; the first gate circuit includes a first switch unit and a second switch unit; the input end of the first switch unit is connected to the Nth level scan drive unit The scanning signal detection terminal of the second switch unit is electrically connected to the scanning signal detection terminal of the first-stage scanning drive unit; the output terminal of the first switching unit and the output terminal of the second switching unit are connected to the detection signal lead The feet are electrically connected; the first switch unit is used for conducting in the forward scan detection phase and closed in the reverse scan detection phase; the second switch unit is used for conducting in the reverse scan detection phase and in the forward scan detection phase closure.
Description
technical field [0001] Embodiments of the present invention relate to the field of display technology, and in particular, to a display panel, a detection method thereof, and a display device. Background technique [0002] The thin film transistor (ThinFilm Transistor, TFT for short) gate switch circuit is integrated on the array substrate of the display panel by using the Gate Driver on Array (GOA) technology of the array substrate to form the scanning drive for the display panel, so that the gate can be omitted. part of the pole driver chip. [0003] The current GOA circuit is composed of a plurality of cascaded shift registers (Shift Registers), and can realize the bidirectional scanning function, that is, forward scanning and reverse scanning. The gates of the switching transistors are used to drive the pixel units of the corresponding row. In the prior art, a finished or semi-finished display panel is usually tested to determine whether each structure in the display pa...
Claims
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IPC IPC(8): G09G3/00
CPCG09G3/006G09G2310/0283G09G2310/0286G09G2310/0267G09G3/20G09G2300/0426G11C19/28G09G3/32G09G2300/0408
Inventor 邹宗骏孙莹许育民
Owner XIAMEN TIANMA MICRO ELECTRONICS