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Method and device for locating short-circuit point in display panel

A technology of display panel and positioning method, which is applied in the direction of short-circuit test, measuring device, instrument, etc., and can solve the problems of time-consuming and low efficiency of positioning method

Active Publication Date: 2020-10-20
HEFEI BOE DISPLAY TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method and device for locating a short-circuit point in a display panel, which can solve the problems of time-consuming and low-efficiency in the locating method of a short-circuit point in the related art

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  • Method and device for locating short-circuit point in display panel
  • Method and device for locating short-circuit point in display panel
  • Method and device for locating short-circuit point in display panel

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Embodiment Construction

[0061] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0062] In the manufacturing process of the display panel, in order to ensure the yield rate of the display panel, before the display panel leaves the factory, it is necessary to perform a lighting test on the display panel to check whether the display panel is qualified. After lighting up each pixel unit in the display panel, if it is observed that the display brightness of each pixel unit of the display panel is uniform, it can be determined that the display panel is qualified; if a gradient line with uneven brightness is observed in the display panel, Then it can be determined that a certain signal line in the display panel may be short-circuited with the common electrode. At this time, the position of the short-circuit point on the ...

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Abstract

The invention discloses a method and device for locating a short circuit point in a display panel, and belongs to the technical field of display. The method comprises the steps: determining a group ofto-be-detected pixel units in the display panel, wherein the group of to-be-detected pixel units comprise a plurality of pixel units, and the uniformity of the display brightness of the pixel units is less than a uniformity threshold value; determining a plurality of target pixel units from the group of to-be-detected pixel units, and determining the pixel units, connected with the short circuitpoint, in the group of pixel units according to the determined drive voltage of each target pixel unit, thereby determining the position of the short circuit point in the display panel. The method provided by the embodiment of the invention can directly determine the position of the short circuit point in the display panel according to the drive voltage, and is higher in efficiency.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a method and device for locating a short-circuit point in a display panel. Background technique [0002] A display panel is generally provided with a plurality of gate signal lines and a plurality of data signal lines, the plurality of gate signal lines are used to provide gate driving signals for each row of pixel units in the display panel, and the plurality of data signal lines are used for providing Each row of pixel units in the display panel provides data signals. When a short circuit occurs between the gate signal line or the data signal line and the common electrode in the display panel, the display panel may display abnormally. Wherein, the short circuit between the gate signal line and the common electrode is generally called GCS (Gate Common Short), and the short circuit between the data signal line and the common electrode is generally called DCS (Data Common Short)...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/52
CPCG01R31/50
Inventor 孙国防高章飞李良实刘濂赵文
Owner HEFEI BOE DISPLAY TECH CO LTD