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Testing method for finding out dirt and abnormality of LCD

A technology for abnormal testing and contamination, applied in nonlinear optics, instruments, optics, etc., it can solve the problem of no testing method that can find LCD contamination and debris, and achieve the effect of meeting the requirements of use and ensuring the quality

Inactive Publication Date: 2015-06-03
OCEANKING DONGGUAN LIGHTING TECH +2
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the above-mentioned deficiencies in the prior art, and propose a test method for finding LCD dirty abnormalities, which can solve the problem that the existing technology cannot detect the dirt and debris produced after long-term transportation of the LCD. The problem with the test method for crumbs

Method used

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  • Testing method for finding out dirt and abnormality of LCD

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Embodiment Construction

[0018] In order to further illustrate the principle and structure of the present invention, preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0019] Embodiment of the test method for finding abnormal LCD dirt

[0020] see figure 1 , a kind of method of testing that finds that LCD is dirty abnormally, it comprises the steps:

[0021] Step S101 : routine image quality inspection: put the LCD to be tested under the environment of the first illuminance, and detect whether there are any abnormalities such as dirt and debris. If dirt or debris is found, it is judged that the LCD is unqualified, otherwise, the LCD is judged to be a qualified product, and the inspection status is recorded. In this embodiment, the first illuminance is 200 lux. The purpose of designing this step is to confirm the status before the LCD test and ensure the validity of the test.

[0022] Step S102: Vibration test: Assemble th...

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Abstract

The invention provides a testing method for finding out dirt and abnormality of an LCD. The method comprises the steps of inspecting the general image quality; performing vibration testing, namely, assembling the LCD in a packing box, packing the LCD according to the LCD sealing packing box standard, and then performing the axial vibration testing in the set axial direction; inspecting the general image quality after each axial vibration testing; performing mechanical impact testing, namely, fixing the LCD on a fixed workpiece, fixing the fixed workpiece on an impact stand, and performing the impact stress testing for the set impact wave in the set axial direction; repeating the general image quality inspection after each axial impact stress test; inspecting the general quality image again; determining that the LCD is unqualified in case of dirt or chips, and otherwise, determining that the LCD is qualified. With the adoption of the method, the problems such as dirt and chips of the LCD after long-term transporting and use can be found out.

Description

technical field [0001] The invention relates to LCD tooling, in particular to a test method for finding abnormal LCD dirt. Background technique [0002] LCD panels are mainly composed of color filters, backlight modules, driver ICs, compensation films and polarizers, glass substrates, ITO films, alignment films, control circuits and other components. Backlight module to achieve the display function, LCD panel manufacturers must first combine color filters after producing glass panels, the two are sealed and then poured into liquid crystals, and then combined with backlight modules, driver ICs, control circuit boards and other components , combined into LCD modules and sold to downstream notebook computer or LCD monitor manufacturers. The backlight module is the second most important component of the LCD panel after the color filter. [0003] Backlight module mainly consists of light source (including cold cathode fluorescent tube (CCFL)), hot cathode fluorescent tube, ligh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13
CPCG02F1/1309
Inventor 周明杰王永清
Owner OCEANKING DONGGUAN LIGHTING TECH
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