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Test circuit and display panel

A technology for testing circuits and display panels, which is applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve problems such as unfavorable narrow frame design, achieve the effect of convenient narrow frame design and reduce additional occupation

Pending Publication Date: 2021-12-24
KUSN INFOVISION OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

figure 1 shows a partial structural schematic diagram of a display panel according to the prior art, refer to figure 1 , in the display panel 100 of the prior art, one end is provided with an opening 101 for placing a camera, near the opening 101, the pixel units 111 are arranged in steps, and the wiring 121 corresponding to the non-display area is arranged obliquely, namely There is no space for placing the ESD protection circuit at the position where the opening is set. The ESD protection circuit 10 needs to be installed at the other end, and the ESD protection circuit 10 generally needs to occupy a width space of 200 to 300 microns on the lower frame, which is not conducive to the design of a narrow 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

[0035] Various embodiments of the invention will be described in more detail below with reference to the accompanying drawings. In the various drawings, the same elements are denoted by the same or similar reference numerals. For the sake of clarity, various parts in the drawings have not been drawn to scale.

[0036] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0037] figure 2 A schematic structural diagram of an electrostatic protection circuit according to the prior art is shown, such as figure 2 As shown, the electrostatic protection circuit 10 of the prior art includes a plurality of switch units, each switch unit includes a transistor T11 and a transistor T12, the gate G1 of the transistor T11 is connected to the drain D1, and the gate G2 of the transistor T12 is connected to the drain D2 connection, the drain D1 of the transistor T11 is connect...

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Abstract

The invention relates to the technical field of display, and discloses a test circuit and a display panel, the display panel comprises the test circuit, the test circuit comprises a test control line, a plurality of test lines and a plurality of switch units arranged in columns, and the switch units are connected with the test lines and data lines. Test signals on the plurality of test lines are provided to the corresponding data lines in a test stage so as to realize a lightening test of the display panel, and in a display stage, the plurality of switch units conduct an electrical path from the corresponding data lines to the test lines and electrostatic charges on the data lines are released to the common electrode lines through the plurality of test lines. According to the test circuit and the display panel provided by the invention, functional circuits for electrostatic protection and lightening test of the display panel are integrated, so that the extra occupation of the electrostatic protection circuit on the frame space of the display panel is effectively reduced, and convenience is provided for the narrow frame design of the display panel.

Description

technical field [0001] The present invention relates to the field of display technology, in particular, to a test circuit and a display panel. Background technique [0002] Liquid Crystal Display (LCD) occupies an important position in the flat panel display field due to its advantages of lightness, thinness, low power consumption, high brightness and high image quality. Wherein, the array substrate in the liquid crystal display panel of the LCD includes pixel units and data lines, the data lines are connected to the pixel units, and the operation of the pixel units is controlled through the data lines. When the display panel is working normally, there will be Electro-Static discharge (ESD for short). Electro-Static discharge is the main factor that causes most electronic components or electronic systems to be damaged by excessive electrical stress, and it is easy to cause permanent damage to semiconductor devices. For the display panel, electrostatic discharge will cause d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G02F1/1362
CPCG01R31/00G02F1/136204
Inventor 王琳琳黄丽玉刘瑞
Owner KUSN INFOVISION OPTOELECTRONICS