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Display substrate and testing method and display device thereof

A technology for displaying substrates and testing methods, applied to static indicators, instruments, calculations, etc., can solve problems such as failure to detect poor short circuit of touch sensor units, failure to ensure poor open circuit of touch sensors, loss of polarizer POL, etc., to achieve Improve the defect detection rate, ensure effective utilization, and improve the effect of production profit

Active Publication Date: 2015-11-25
BOE TECH GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the existing ET design scheme of the ADS type self-capacitance touch electrode cannot detect the short circuit between the touch sensor units, and cannot ensure the complete detection of the open circuit of the touch sensor, and the test result is inaccurate; Bad touch display panels flow to the module process, which will further cause a large loss of polarizer POL, driver IC, flexible circuit board FPC and other materials, increasing production costs

Method used

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  • Display substrate and testing method and display device thereof
  • Display substrate and testing method and display device thereof
  • Display substrate and testing method and display device thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] This embodiment provides a display substrate, the display substrate is provided with a test unit, and the test unit is used to test the electrical performance of the display substrate during the display process and the electrical performance of the formed self-capacitive touch electrodes. The test unit can accurately test the open circuit or short circuit of the touch display panel in the display stage or the touch stage, so as to improve the test accuracy and reduce the production cost.

[0039] The display substrate includes a plurality of pixel regions arranged in a matrix and a test unit, each pixel region is provided with a first electrode, wherein the test unit includes at least two sub-test units, and the plurality of adjacent pixel regions correspond to the first electrode. The electrodes are divided into an electrode block, and the electrode blocks are electrically isolated from each other. The electrode blocks are divided into at least two test groups with the ...

Embodiment 2

[0071] This embodiment provides a display device, which includes the display substrate in Embodiment 1, and uses a corresponding test method to test its display function and touch electrical performance.

[0072] Since the display device adopts the above-mentioned high-yield display substrate, it has better display and touch effects and more stable performance.

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Abstract

The invention belongs to the technical field of display, and particularly relates to a display substrate and a testing method and display device thereof. The display substrate comprises a plurality of pixel regions arranged in a matrix mode and a testing unit. Each pixel region is provided with a first electrode. The testing unit comprises at least two subsidiary testing units. The corresponding first electrodes of the pixel regions adjacent in position are classified into one electrode block. All the electrode blocks are electrically isolated. The electrode blocks are divided into at least two testing sets with the number the same as that of the subsidiary testing units according to set positions. The electrode blocks belonging to the same testing set are arranged in an intersecting and staggered mode in the row and column directions. The electrode blocks in the same testing set are connected with one subsidiary testing unit. The testing unit can accurately test open circuit and short circuit defects of a touch display panel during the display stage or the touch stage, the testing accuracy is improved, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the field of display technology, and in particular relates to a display substrate, a testing method thereof, and a display device. Background technique [0002] In order to realize the thinning and lightening of the touch display panel, the research on the integration of the touch panel and the liquid crystal display panel is becoming more and more popular. Among them, the In-Cell touch solution, which embeds the function of the touch panel into the liquid crystal display panel, has attracted widespread attention. The In-Cell touch solution usually includes a self-capacitance method and a mutual-capacitance method. [0003] Among them, for the liquid crystal display panel of the advanced hyper-dimensional field switching ADSDS (ADvancedSuperDimensionSwitch, referred to as ADS) mode, the self-capacitance method is specifically as follows: figure 1 As shown, the metal layer used as the common electrode on the liquid crystal disp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13G02F1/1333
CPCG02F1/1309G02F1/13338G09G3/006G09G2330/12G06F3/0412G06F3/0418G06F3/0443
Inventor 李彦辰王攀华
Owner BOE TECH GRP CO LTD
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