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 plurality of 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 light extraction efficiency.

Description

technical field [0001] The present invention relates to a light source module, a manufacturing method of a master mold and a sub-mould 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 an arc-shaped tip microstructure A method for manufacturing a master mold and a daughter mold, and an optical plate with good light extraction rate and a method for manufacturing the same. Background technique [0002] In liquid crystal displays, cold cathode fluorescent tubes (Cold Cathode Fluorescent Tube, CCFT) or light emitting diodes (Light Emitting Diode, LED) are generally used as light sources, and then the light emitted by the light sources is guided to the display screen through the light guide plate. In order to prevent the brightness unevenness of the liquid crystal display, it is necessary to use an optical plate to make the brightness of the entire scr...

AI Technical Summary

Problems solved by technology

However, if the plurality of microstructures 210 of the optical plate 200' are too close to each other so as to overlap, then as Figure 2B As shown, at this time, the diamond indenter D will not be able to form a normal microstructure 210, but a deformed 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