Manufacturing method of light source module, optical plate, and master mould and sub-mould of the optical plate

Abstract

The invention discloses a manufacturing method of a light source module, an optical plate, and a master mould and a sub-mould of the optical plate. The optical plate comprises a substrate, a pluralityof first microstructures, a plurality of second microstructures and a plurality of third microstructures. The substrate has a first area, a second area and a third area, and the second area is between the first area and the third area. A plurality of the first microstructures are arranged on a surface of the substrate in the first area at a predetermined spacing. A plurality of the second microstructures are arranged on the surface of the substrate in the second area. A plurality of the second microstructures have paired mutual connection at least, and a connection and the surface of the substrate are coplanar. A plurality of the third microstructures are arranged on the surface of the substrate in the third area, and a plurality of the third microstructures have paired partial superposition at least; wherein, the first microstructures, the second microstructures and the third microstructures have circular arc-shaped tips respectively. The method can help prevent moire generation, provide uniform and concentrated beams and be used for manufacturing a concaved microstructure mould and a convex microstructure mould with circular arc-shaped tips, and the optical plate with high lightextraction efficiency.

Description

Method for manufacturing light source module, optical plate, optical plate and its mother mold and daughter mold Technical field The invention relates to a light source module, a method for manufacturing a master mold and a daughter mold of an optical plate, an optical plate and a manufacturing method thereof, and in particular to a light source module with uniform and concentrated light, and an optical plate with arc-shaped tip microstructures The manufacturing method of the master mold and the daughter mold, and the optical plate with good light extraction rate and the manufacturing method thereof. Background technique In liquid crystal displays, cold cathode fluorescent tubes (CCFT) or light emitting diodes (LEDs) are generally used as light sources, and the light emitted by the light sources is guided to the display screen through the light guide plate. In order to prevent the unevenness of the brightness of the liquid crystal display, it is necessary to use an optical pla...

AI Technical Summary

Problems solved by technology

However, if the multiple microstructures 210 of the optical plate 200' are too close to each other to overlap, as shown in FIG. 2B , at this time, the diamond indenter D will not be able to form normal microstructures 210, but will be deformed instead. Microstructure 210'

It can be seen that the indentation processing method in the known technology cannot produce tightly packed microstructures, so the optical effect of the optical plate will also be limited and cannot be further improved

Images