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Touch display panel, test method thereof and display device

A technology for touch display panels and display areas, applied in instruments, semiconductor devices, calculations, etc., can solve problems such as different PCD line impedance design values, yield loss, and low accuracy, so as to improve the efficiency and accuracy of crack analysis High and narrow range effects

Pending Publication Date: 2020-10-30
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when designing a product, the impedance design value of the PCD line of different products is different. If the impedance of the PCD line does not match the inherent characteristics of the driver chip, the accuracy of the resistance and voltage test using the PCD line is low. Misjudgments lead to yield loss

Method used

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  • Touch display panel, test method thereof and display device
  • Touch display panel, test method thereof and display device
  • Touch display panel, test method thereof and display device

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Embodiment Construction

[0064] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below in conjunction with the drawings of the embodiments of the present application. Apparently, the described embodiments are some of the embodiments of the present application, but not all of them. And in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. Based on the described embodiments of the present application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0065] Unless otherwise defined, the technical terms or scientific terms used in the application shall have the ordinary meanings understood by those skilled in the art to which th...

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PUM

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Abstract

The invention discloses a touch display panel, a test method thereof and a display device, which are used for improving the crack test accuracy. The embodiment of the invention provides the touch display panel. The touch display panel comprises a display area and a peripheral area surrounding the display area. The display area comprises a touch electrode and a touch signal line electrically connected with the touch electrode. The peripheral area comprises a crack test lead and a first driving chip electrically connected with the crack test lead; the crack test leads are distributed around thedisplay area; the touch signal lines extend from the display area to the peripheral area, and the crack test leads are electrically connected with part of the touch signal lines; and the first drivingchip is configured to provide a test signal for the crack test lead to obtain a capacitance value of the touch electrode.

Description

technical field [0001] The present application relates to the field of display technology, in particular to a touch display panel, a testing method thereof, and a display device. Background technique [0002] Organic-Light-Emitting Diode (OLED) displays are soft in texture, and there is a risk of cracking due to damage to the edge of the screen during the manufacturing process, and there is a risk of crack deterioration resulting in abnormal screen display during the reliability process. risk. [0003] In order to judge whether there is crack in OLED products during the production process, the existing technology usually forms a circle of metal lines on the edge of the display panel as the panel crack detection (Panel Crack Detect, PCD) PCD line, and the PCD line is around the edge of the display panel. To form a wire loop, by testing the resistance and voltage of the PCD line to monitor whether there is Crack in the PCD line, and then judge whether the edge of the OLED scr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041G06F3/044H01L27/32
CPCG06F3/0412G06F3/04164G06F3/0445H10K59/40
Inventor 杨广杰郭文峰王莉李飞韩康王静
Owner BOE TECH GRP CO LTD