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Test circuit and display panel

A technology for testing circuits and display panels, applied to static indicators, instruments, etc., can solve the problem of affecting the overall width of the lower frame, and achieve the effect of improving stability

Pending Publication Date: 2021-10-29
AU OPTRONICS KUNSHAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the electrostatic protection circuit is set separately, it will affect the overall width of the lower frame

Method used

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  • Test circuit and display panel
  • Test circuit and display panel
  • Test circuit and display panel

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Embodiment Construction

[0023] In order to have a further understanding of the purpose, structure, features and functions of the present invention, the detailed description is as follows in conjunction with the embodiments.

[0024] Please refer to figure 1 , figure 1 is a schematic diagram of the display panel of the present invention, figure 2 It is a schematic diagram of the test circuit of the present invention. Such as figure 1 As shown, the display panel 100 of the present invention has a first substrate 210 , and the first substrate 210 has a display area 110 and a peripheral area 120 . In this embodiment, the display area 110 of the display panel 100 is rectangular. In actual operation, the display panel 100 or the display area 110 can also be set as a circle, ellipse, other irregular arcs, triangles, pentagons or other shapes. polygon. The display area 110 is provided with a plurality of data lines 111 , and a plurality of pixel units 101 are formed into an array and disposed in the di...

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Abstract

The invention discloses a test circuit and a display panel. The test circuit comprises a plurality of switch units, a first input end and a second input end, wherein each switch unit comprises a first switch module and a second switch module, and in the test stage, the first input end and the second input end receive test signals for testing; in the electrostatic protection stage, the first input end receives a first voltage signal, the second input end receives a second voltage signal, and the first voltage signal is smaller than the second voltage signal; when the data line has a first positive voltage exceeding a first preset value, the second switch module is turned on, and the first positive voltage is discharged from the second input end; when the data line has a first negative voltage smaller than a second preset value, the first switch module is turned on, and the first negative voltage is discharged from the first input end. According to the invention, a test function can be normally provided in the manufacturing process of the display panel, and electrostatic protection can be assisted when the display panel is normally used.

Description

technical field [0001] The invention relates to a test circuit and a display panel, in particular to a test circuit and a display panel with both test functions and electrostatic protection functions. Background technique [0002] With the rapid development of electronic devices, the application of display panels is becoming more and more popular. The lower border of the display panel is a peripheral area on which a test circuit can be arranged, and the test circuit is used to control the input of data signals to corresponding data lines for image detection. In actual operation, there are many and dense circuit designs on the lower frame of the display panel. In addition to the test circuit, there are also multiplexer circuits (MUX), data line fan-out area (data fan-out), etc. These circuits The middle metal layer is intertwined and complex, and it is extremely easy to be damaged by electrostatic discharge (ESD). Taking the data line fan-out area as an example, it is one o...

Claims

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Application Information

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IPC IPC(8): G09G3/00G09G3/20
CPCG09G3/006G09G3/20
Inventor 刘鑫涂俊达宋旻骏林富良
Owner AU OPTRONICS KUNSHAN CO LTD
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