Test method of liquid crystal display

Abstract

A test method of a liquid crystal display comprises the steps of performing a signal switching surge test and circularly powering on and off the liquid crystal display; performing temperature and humidity circulating surge test while the signal switching surge test is performed, circularly placing the liquid crystal display in a high-temperature high-humidity environment and low-temperature high-humidity environment, and circularly placing the liquid crystal display in a high-temperature low-humidity environment and low-temperature low-humidity environment; performing image quality testing on the liquid crystal display. By performing signal switching surge test and temperature and humidity circular surge test on the liquid crystal display, the electrochemical reaction among frame rubber lines of a liquid crystal panel is accelerated, and potential defects, such as liquid crystal leakage abnormity, possibly occurring after the long-term use in the design stage can be exposed in a short time.

Description

technical field [0001] The invention relates to the technical field of liquid crystal displays, in particular to a liquid crystal display testing method. Background technique [0002] Liquid crystals are organic compounds that are almost completely transparent, and charging liquid crystals changes their molecular alignment, which in turn causes light to be distorted or refracted. The basic principle of LCD (Liquid Crystal Display) display is to fill the liquid crystal material between two parallel plates, and change the arrangement of molecules inside the liquid crystal material through voltage to achieve the purpose of shading and light transmission to display the depth Different and well-proportioned images, and as long as a three-color filter layer is added between two flat plates, color images can be displayed. [0003] LCD has gradually replaced CRT (Cathode Ray Tube, cathode ray tube) monitors because of its advantages such as power saving, low radiation, small struct...

AI Technical Summary

Problems solved by technology

However, due to factors such as the working environment and usage habits, a large temperature difference will cause "condensation" on the LCD; Moisture on the electrodes and packaging frame glue may cause corrosion of the liquid crystal electrodes and abnormal liquid crystal leakage when using the LCD

[0004] Since the abnormal liquid crystal leakage of LCD is greatly affected by the use environment, and the abnormality of LCD is generally after long-term use, the conventional testing methods currently used cannot expose possible potential liquid crystal leakage abnormalities

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