Fast detection method of large substrate of liquid-crystal display screen

Abstract

The invention relates to the field of liquid-crystal display and discloses a fast detection method of a large substrate of a liquid-crystal display screen. The fast detection method comprises the following steps of: cutting the large substrate of the display screen in Cell box formation, and exposing electric-measuring IC control positions of all display screens; placing the large substrate with exposed IC control positions after cutting on a backlight lamp box or plate with a lower polarizer, lightening a backlight source, wherein the other side of the large substrate is matched with an upperpolarizer; starting a detection program, respectively connecting all electric-measuring probes into the IC control positions, carrying out fast detection on the display screens in Cell box formationon the large substrate, and judging whether the display screens are qualified or not. The fast detection method has the beneficial effects that by adoption of the technical scheme, fast and effectivedetection for the large substrate can be realized and the labor and the materials for detection are saved.

Description

technical field [0001] The invention relates to the field of liquid crystal displays, in particular to a rapid detection method for a large substrate of a liquid crystal display. Background technique [0002] Liquid crystal display is a kind of display device in the industry at present. Its advantages are thin body, relatively light weight, small footprint and small electromagnetic radiation, giving people the image of healthy products. Therefore, it is widely used in people's lives and In production, the production scale of liquid crystal display has been increasing in recent years. In China, there is already an 11th-generation LCD panel production line with a size of 3370mm*2940mm, which is the largest production line for LCD panels in the world. [0003] The production process of liquid crystal display mainly includes the LCD process of Cell boxing and the LCM process of installing backlight. The LCD process also includes the production and processing process of Color Fil...

AI Technical Summary

Problems solved by technology

The LCM process is a process of cutting, binding and installing the backlight of the LCD screen, that is, the process of assembly, which does not touch the core technology of liquid crystal display processing. It is relatively simple, and the assembly cost is relatively relatively to the equipment investment cost of the LCD processing process. Therefore, many liquid crystal display panel manufacturers mainly carry out the production and processing of LCM technology, so they need to purchase LCD display screens, usually the large substrates of LCD screens are purchased, and then the cutting, binding and Install the backlight. In this process, after cutting the large substrate of the LCD screen into small screens, it is necessary to conduct a fast electrical test to eliminate unqualified products. This rapid electrical test process is crucial for manufacturers of large LCD screen substrates. It is important, because on the one hand, it will affect the production yield and even cause economic losses, and on the other hand, the specific problem and reason are not clear. At the same time, the quick inspection process is basically operated by personnel for customers, which is time-consuming and laborious

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