Manufacturing method of optical microstructure, processing machine cabinet and light guide plate die

Abstract

The invention provides a manufacturing method of an optical microstructure, a processing machine cabinet and a light guide plate die. The method is characterized in that a laser beam irradiates a substrate having a melting temperature and one processing temperature of the laser beam meets a condition that C2 is larger than or equal to C1 and is smaller than or equal to (1.1*C1); and when the laser beam bombards the substrate, the substrate is melted down and then is cooled, and thus at least one protrusion part and a recessed part arranged at the peripheral side of the protrusion part are formed on the surface of the substrate. Therefore, the protrusion part can be formed on substrate based on laser processing by controlling the processing temperature. The substrate can be used as a manufacturing die of a light guide plate and coats the outer side of a roller to carry out pressing processing on the light guide plate, so that a recessed microstructure is formed on the surface of the light guide plat by corresponding to the protrusion part and the protrusion part is not easy to crack during the pressing application process. The structure strength is excellent; and the service life of the die can be prolonged.

Description

Technical field [0001] The invention relates to the processing field of light guide plates, in particular to the processing field of manufacturing light guide plates with optical microstructures. Background technique [0002] The light guide plate is a component used in the backlight module to guide light to form a uniform light output. It uses the principle of total reflection to transfer the light incident from the light entrance surface of the light guide plate to the remote end of the light guide plate, and utilizes the plural optical microstructures of the light guide plate The total reflection is destroyed to adjust the light output and the light uniformity to form a uniform surface light source. [0003] The traditional way of forming optical microstructures on the light guide plate is mostly printing. It prints the designed optical microstructure pattern on the light guide plate using the high-dispersion light source material printing material to form dots, and the dots de...

AI Technical Summary

Problems solved by technology

Especially during the embossing process, because the rollers must exert a certain pressure on the light guide plate, after a long period of pressing, the wrinkled dots are prone to cracking due to force. Bending or collapsing and falling into the wrinkled dots, reducing the processing life of the substrate or mold core

Moreover, the shape or size of the optical microstructure on the surface of the light guide plate made by embossing through this kind of substrate will be affected, resulting in a decrease in the processing yield of the optical microstructure of the light guide plate.

[0007] In addition, the corrugated dots formed on the mold core or the substrate through laser processing are in the form of depressions, which limits the shape of the optical microstructure of the light guide plate after being molded by the mold core or the substrate.

With the expansion of the application scope of the light guide plate, a single shape structure can no longer meet the more diverse light guide performance requirements, so how to adjust and improve the shape and processing process of the corrugated dots on the mold core or substrate used to manufacture the light guide plate , and the service life of the mold core or substrate, etc., are one of the subjects that need to be improved at present.

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