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Array substrate, display panel and display device

An array substrate and display area technology is applied in the fields of array substrates, display panels and display devices.

Active Publication Date: 2021-08-24
SHANGHAI AVIC OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides an array substrate, a display panel and a display device, which solves the technical problem of low test accuracy of special-shaped display panels in the prior art

Method used

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  • Array substrate, display panel and display device
  • Array substrate, display panel and display device
  • Array substrate, display panel and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0065] The channel length L11 of the first switching transistor Tb1 is equal to the channel length L12 of the second switching transistor Tb2, and the channel width L21 of the first switching transistor Tb1 is greater than the channel width L22 of the second switching transistor Tb2;

[0066] The channel width L21 of the first switching transistor Tb1 is equal to the channel width L22 of the second switching transistor Tb2, and the channel length L11 of the first switching transistor Tb1 is smaller than the channel length L12 of the second switching transistor Tb2;

[0067] The channel length and width of the first switch transistor Tb1 and the second switch transistor Tb2 are not equal.

[0068] Regardless of which of the above implementations is adopted, the width-to-length ratio L21 / L11 of the channel of the first switching transistor Tb1 is realized by adjusting the source and / or drain of the first switching transistor Tb1 and / or the second switching transistor Tb2 It is g...

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PUM

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Abstract

The invention discloses an array substrate, a display panel and a display device. The array substrate includes: a plurality of signal lines, the plurality of signal lines include a first signal line and a second signal line, the load of the first signal line is greater than the load of the second signal line; test leads; control leads; a plurality of test switches, The test switch includes an output terminal, an input terminal and a control terminal. The output terminal of each test switch is electrically connected to a different signal line, and the input terminal of each test switch is electrically connected to a test lead wire. The control of each test switch Both terminals are electrically connected to a control lead wire; a plurality of test switches include a first test switch and a second test switch, the output end of the first test switch is electrically connected to the first signal line, and the output end of the second test switch is electrically connected to the second signal line. Wire connection; wherein, the on-state current of the first test switch is greater than the on-state current of the second test switch. Through the present invention, the accuracy of testing can be improved.

Description

technical field [0001] The present invention relates to the field of display technology, and more specifically, to an array substrate, a display panel and a display device. Background technique [0002] After the display panel is packaged, before the chip (IC) or the flexible circuit board (FPC) is crimped on the display panel, the display panel needs to be tested, and the test by means of a switch (SW) is more common. During the test, the external test signal is transmitted to the data signal line of the display panel through the switch to provide the data signal for the pixel and test the display effect of the pixel. In addition, for a touch display panel in which the touch function is integrated in the display panel, in addition to testing the display effect of the pixels, it is also necessary to test the touch function. When testing the touch function, similar to the display effect of the test pixel, the external test signal is transmitted to the touch electrode line th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1362G09G3/00H01L27/32
CPCG02F1/136286G09G3/006G02F1/136254H10K59/131
Inventor 邵琬童夏志强金慧俊
Owner SHANGHAI AVIC OPTOELECTRONICS