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Display panel and test method of display panel

A technology of display panel and display area, which is applied in nonlinear optics, instruments, optics, etc., and can solve problems such as large space and wide frame of display device

Inactive Publication Date: 2017-08-18
SHANGHAI TIANMA AM OLED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since the point screen test requires the use of unique circuits and related wiring, these are in the non-display area of ​​the display device, occupying a large space, resulting in a wider frame of the display device

Method used

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  • Display panel and test method of display panel
  • Display panel and test method of display panel
  • Display panel and test method of display panel

Examples

Experimental program
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Embodiment

[0050] figure 1 A top view of the display panel provided by the embodiment of the present invention, figure 2 for figure 1 The first enlarged schematic diagram of the region A in the middle, such as figure 1As shown, the display panel in the embodiment of the present invention may include a display area AA and a non-display area BB, the display area AA includes a plurality of pixel units 11, the plurality of pixel units 11 are arranged in rows or columns, and the non-display area BB It includes a multiplexer circuit 21 and a signal input circuit 22 . like figure 2 As shown, the multiplexing circuit 21 includes a plurality of first switch units 211 and a plurality of data lines 212 , and each first switch unit 211 corresponds to one data line 212 , and each data line 212 corresponds to a column of pixel units 11 . It can be understood that, in the embodiment of the present invention, after each first switch unit 211 is turned on, it is used to test whether a column of pix...

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Abstract

The embodiment of the invention provides a display panel and a test method of the display panel. The display panel includes a display region and a non-display region; the display region includes a plurality of pixel units, and the non-display region includes a multi-channel selection circuit and a signal input circuit; the multi-channel selection circuit includes a plurality of first switch units and a plurality of data lines, each first switch unit is corresponding to one data line, and each data line is corresponding to a row of the pixel units; and the signal input circuit includes a signal input line and a plurality of short-circuit lines, the signal input line is used for inputting a test signal to the plurality of short-circuit lines, and the short-circuit lines are used for short-connecting the plurality of data lines. The technical scheme can reuse an original circuit of a multiplexer, can avoid a unique circuit and relevant lines which are desired by screen test, and can narrow a frame of the display device.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a display panel and a testing method for the display panel. Background technique [0002] In the process of R&D, production testing, and debugging before leaving the factory, it is necessary to test whether the display device can be used normally through a point-screen test. There will be several results when the touch screen test operation is carried out: Result 1, the screen is successfully lit, and the display device displays normally; Result 2, the screen cannot be lit, and the display device is faulty. [0003] Usually, the dot screen test needs to use a unique circuit and related wiring, but after the dot screen test of the display device, the circuit used in the dot screen test and the related wiring will not be used again. [0004] Since the dot screen test needs to use a unique circuit and related wiring, these are all in the non-display area of ​​the dis...

Claims

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Application Information

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IPC IPC(8): G02F1/1362G02F1/13
CPCG02F1/1309G02F1/136286G02F1/136254
Inventor 李春阳
Owner SHANGHAI TIANMA AM OLED
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