Display panel and crack detection method thereof and display device

A display panel and crack detection technology, which is applied to static indicators, instruments, etc., can solve problems such as inability to efficiently and quickly identify cracks on the screen, unfavorable realization of narrow borders, and prone to problems

Pending Publication Date: 2020-10-27
YUNGU GUAN TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing crack detection circuit takes up too much space on the display panel, which is not conducive to the realization of a narrow f...

Method used

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  • Display panel and crack detection method thereof and display device
  • Display panel and crack detection method thereof and display device
  • Display panel and crack detection method thereof and display device

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Embodiment Construction

[0037] 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 here 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, only some structures related to the present invention are shown in the drawings but not all structures.

[0038] As mentioned in the background technology, any abnormality in each manufacturing process of the display panel will cause cracks in the screen body, and there is a high risk of black spots or abnormal display. However, the existing crack detection circuit not only hinders the realization of the narrow frame of the display device, It is also prone to problems, and cannot efficiently and quickly identify cracks in the screen. The inventors have found through research that the reason for the above problems is t...

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PUM

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Abstract

The embodiment of the invention discloses a display panel and a crack detection method thereof and a display device. The display panel is provided with a display area and a non-display area. The display panel includes a dummy pixel circuit and a light emitting device connected to the dummy pixel circuit; the crack detection line is located in the non-display area, one end of the crack detection line is connected with the test terminal, the other end of the crack detection line is connected with the driving signal line, the driving signal line is connected with the dummy pixel circuit, and signals transmitted to the driving signal line by the crack detection line can control the dummy pixel circuit to drive the light emitting device to emit light. According to the technical scheme providedby the embodiment of the invention,the crack detection lines, the corresponding driving signal lines and the dummy pixel circuit are connected through the test terminals, and the test signal is transmitted to the light-emitting device connected with the dummy pixel circuit, thereby achieving the crack detection of the display panel, facilitating the implementation of a narrow-frame design, reducing the abnormality risk of a detection image, and improving the failure analysis efficiency of the display panel and the detection efficiency of a defective product.

Description

technical field [0001] Embodiments of the present invention relate to the field of display technology, and in particular, to a display panel, a crack detection method thereof, and a display device. Background technique [0002] With the rapid development of display technology, the frame design of the display panel is continuously narrowed. Abnormalities in various manufacturing process sections of the display panel will cause screen cracks, and there is a high risk of black spots or abnormal display. Therefore, through panel cracks Detection (Panel Crack Detection, PCD) technology is very important to identify cracks in the screen body in time. The existing crack detection circuit occupies too much space on the display panel, which is not conducive to the realization of a narrow frame, and the existing crack detection circuit itself is prone to problems, and cannot efficiently and quickly identify cracks on the screen body. Contents of the invention [0003] Embodiments o...

Claims

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Application Information

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IPC IPC(8): G09G3/00
CPCG09G3/006
Inventor 李志明柴青孙光远朱正勇
Owner YUNGU GUAN TECH CO LTD
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