Test method of liquid crystal display

A technology of liquid crystal display and testing method, which is applied in the direction of instruments, measuring electronics, measuring devices, etc., and can solve problems such as abnormal liquid crystal leakage, condensation of liquid crystal display, and environmental impact of LCD liquid crystal leakage

Inactive Publication Date: 2014-05-21
OCEANKING DONGGUAN LIGHTING TECH +2
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 wh...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Test method of liquid crystal display
  • Test method of liquid crystal display

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] A liquid crystal display testing method can test only one liquid crystal display alone, and can also test two or more than two liquid crystal displays simultaneously. Such as figure 1 shown, including the following steps:

[0020] Step S120: Signal switch impact test, cyclically powering on and powering off the liquid crystal display.

[0021] Step S130: Carrying out the temperature and humidity cycle shock test at the same time as the signal switch shock test, including:

[0022] Step S132: Place the liquid crystal display in a high-temperature and high-humidity environment for a first period of time, then place the liquid crystal display in a low-temperature and high-humidity environment for a second period of time, and switch between the above two environments according to the first and second periods of time Perform multiple cycle switching.

[0023] Step S134: Place the LCD display in a high-temperature and low-humidity environment for a third period of time, th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

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...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G02F1/13G01R31/00
Inventor 周明杰王永清
Owner OCEANKING DONGGUAN LIGHTING TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap