Circuit and method for testing liquid crystal display device

A liquid crystal display device and testing circuit technology, which is applied in nonlinear optics, instruments, optics, etc., can solve the problems of production waste, inability to detect the short circuit phenomenon of the scanning electrode lines of the liquid crystal display device, etc., so as to improve the accuracy and avoid production. wasteful effect

Inactive Publication Date: 2013-07-10
TRULY SEMICON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the existing test circuit and test method of the liquid crystal display device cannot detect the possible short circuit phenomenon between the scanning electrode lines of the liquid crystal display device, which will cause the unqualified liquid crystal display device to be transferred to the next production link, resulting in production waste

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  • Circuit and method for testing liquid crystal display device
  • Circuit and method for testing liquid crystal display device
  • Circuit and method for testing liquid crystal display device

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Embodiment 1

[0040] For ease of description, this embodiment will take a test circuit including two scan electrode test blocks as an example to describe the test circuit provided by the present invention, but it should be noted that, for the test circuit provided by the present invention The number is not limited in the present invention, as long as the test circuit includes at least two scan electrode test blocks, it belongs to the protection scope of the present invention.

[0041] The test circuit of the liquid crystal display device provided by this embodiment, such as Figure 4 As shown, it includes: a first scan electrode test block 401 , a second scan electrode test block 402 and a plurality of scan electrode lines 403 . Wherein, adjacent scan electrode lines of the plurality of scan electrode lines 403 are electrically connected to the first scan electrode test block 401 and the second scan electrode test block 402 respectively.

[0042] When the scanning electrode line of the liq...

Embodiment 2

[0048] This embodiment provides a liquid crystal display device testing method, comprising the following steps:

[0049] Step S301: Divide multiple scan electrode lines of the liquid crystal display device into multiple scan electrode line groups, and ensure that adjacent scan electrode lines belong to different scan electrode line groups.

[0050] In this embodiment, a plurality of scanning electrode lines of a liquid crystal display device are divided into two groups as an example for illustration. Divide multiple scan electrode lines into the first scan electrode line group and the second scan electrode line group, and ensure that adjacent scan electrode lines are in different scan electrode line groups, that is, belong to the first scan electrode line group and the second scan electrode line group The scanning electrode lines of the second scanning electrode line group are arranged at intervals, and there is a scanning electrode line belonging to the second scanning electr...

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Abstract

The invention discloses a circuit for testing a liquid crystal display device. The circuit comprises a plurality of scanning electrode lines and at least two scanning electrode testing blocks. Adjacent scanning electrode lines of the plurality of scanning electrode lines are electrically connected with different scanning electrode testing blocks respectively. The circuit for testing the liquid crystal display device can not only detect whether each scanning electrode line works normally but also can detect a possible shortcircuit problem existing among the plurality of scanning electrode lines, namely the circuit can improve detecting accuracy of the liquid crystal display device. Defective products can be rejected timely, unqualified liquid crystal display devices with shortcircuit problems among the scanning electrode lines are prevented from entering the next production link, and production waste is avoided.

Description

technical field [0001] The invention belongs to the technical field of liquid crystal display, and in particular relates to a test circuit and a test method of a liquid crystal display device. Background technique [0002] Liquid Crystal Display (LCD for short), also known as LCD panel, is an ultra-thin flat display device, which consists of a certain number of color or black and white pixels, placed in front of the light source or reflective surface, and is the most important part of the LCD display. Compared with CRT (cathode ray tube) displays, displays manufactured with LCD technology have the advantages of smaller size, thinner, lower radiation, and lower power consumption. [0003] Liquid crystal displays are usually processed into finished products using two processes, including the front glass substrate process and the film substrate process. The front glass substrate process forms the front glass substrate of the liquid crystal panel; the thin film substrate proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13
Inventor 林建伟何基强胡君文李林洪胜宝张泽鹏陈天佑梅新东卓胜镜
Owner TRULY SEMICON
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