Heavy industry technique of light guide plate

Abstract

The present invention relates to the field of liquid crystal display technology, there is provided a light guide plate technology and Heavy Heavy equipment, wherein heavy process comprising the steps of: coating the light guide plate to be reworked on a first detergent; coated with a first cleaning the transmission device of the light guide agent into the brush cleaning means in turn, roller cleaning apparatus for cleaning, and then dried.In the present invention, the use of heavy equipment to replace the existing manual wiping or heavy scrap poor light guide plate directly, not only to avoid damage to the light guide plate in the conventional heavy due to manual wiping caused by dirt entering, and avoid directly with the volatile cleaning agent contacts, greatly improving the work environment, improve production yields and lower production costs.

Description

technical field [0001] The present invention relates to the technical field of liquid crystal display, and more specifically, relates to a rework process of a light guide plate. Background technique [0002] At present, medium and large-sized LGP (Light guide plate, light guide plate) are mainly formed by printing. It uses high-tech materials with high reflectivity and no light absorption (commonly known as ink) to print light-guiding dots on the bottom surface of optical-grade acrylic / PC boards with screen printing technology. Its working principle is: use the optical grade acrylic sheet to absorb the light emitted from the light source, and stay on the surface of the optical grade acrylic sheet. When the light hits each light guide point, it will destroy the total reflection of the light inside the acrylic sheet. The light will diffuse to all angles and be emitted from the front of the light guide plate. The light guide plate can be made to emit light evenly by setting v...

AI Technical Summary

Problems solved by technology

Poor screen dots make the light guide plate unable to emit light evenly, and if it is used in the liquid crystal module, there will be a bad picture

For light guide plates with poor dots, there is no good treatment process in the industry at present, and only manual wiping or scrapping can be used.

After manual wiping, the surface of the acrylic sheet cannot reach the cleanliness before printing, and other defects are prone to occur, such as shadows, bruises, etc.

Especially for large-size TV LGP, due to the large dot area, the probability of defect after rework is higher, that is, the yield rate is very low after rework

Moreover, at present, such solvents are highly volatile organic compounds with a pungent odor and are extremely harmful to the human body.

And because the price of optical pole acrylic sheet is relatively high, about 3.5-4$ / Kg, if it is not reworked and scrapped directly, it will cause a lot of loss

Images