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Test circuit and display device for display panel

A technology for display panels and test circuits, used in static indicators, nonlinear optics, instruments, etc., can solve problems such as short circuits in test lines, and achieve the effect of preventing electrostatic discharge and preventing short circuits.

Active Publication Date: 2022-01-07
HKC CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this application is to provide a test wiring and a display device for a display panel, so as to improve the short circuit of the test wiring

Method used

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  • Test circuit and display device for display panel
  • Test circuit and display device for display panel
  • Test circuit and display device for display panel

Examples

Experimental program
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Embodiment 1

[0028] Such as figure 1 As shown, as the first embodiment of the present application, a schematic top view of a display motherboard is disclosed. The display motherboard 1 includes a plurality of uncut display panels 10, and the display motherboard 1 is arranged along the uncut display The edge of the panel 10 is provided with a plurality of cutting lines 2, and the display motherboard 1 is provided with test terminals, and the test wires 110 of each of the uncut display panels 10 are respectively connected to the test terminals (not shown in the figure). out), and the position intersecting with the corresponding cutting line 2 is exposed after cutting. Specifically, the display motherboard 1 is also provided with a plurality of test common lines 3, and each display panel 10 is respectively provided with a plurality of test lines. The lines 110 and the corresponding multiple test wires 110 are respectively connected to multiple test common lines 3 in one-to-one correspondence,...

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PUM

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Abstract

The present application discloses a test circuit and a display device of a display panel. The test circuit includes: a plurality of test lines, a plurality of first active switches and a protection circuit. The test lines include high-level signal test lines, low-level signal test line and at least one test signal line; the first active switch controls the conduction and shutdown of the test signal line, the low-level signal test line and the high-level signal test line; the high-level signal test line is also connected to each first The control terminal of the active switch; the protection circuit includes a control signal input terminal and a control signal output terminal. The control terminal of the switch is connected; when the display panel is working normally, the protection circuit receives the low-level signal on the low-level signal line and outputs the control signal to control the first active switch to turn off. The present application adopts the above solution to solve the problem of improving the short circuit of the test wiring.

Description

technical field [0001] The present application relates to the field of display technology, in particular to a test circuit of a display panel and a display device. Background technique [0002] Flat-panel displays are currently mainstream displays, and liquid crystal displays are widely used in electronic products such as computer screens, flat-screen TVs, and mobile phones because of their thin and light appearance and power-saving advantages. The liquid crystal display includes a liquid crystal display panel, a backlight module, an optical film, a plastic frame, and conductive adhesive tape arranged on the side of the display panel. [0003] Generally speaking, a liquid crystal display panel includes a display area and a non-display area around the display area. The non-display area is provided with multiple test lines. The test pads of all the liquid crystal display panels on the large-scale display motherboard will be connected together by test wires for testing. Howev...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/00G02F1/13
CPCG09G3/006G02F1/1309
Inventor 杨维世许益祯王立苗任春晖唐榕赵聪聪郑浩旋
Owner HKC CORP LTD