Light guide plate and manufacturing method thereof

Abstract

A light guide plate and a manufacturing method thereof are disclosed. The light guide plate includes a substrate, a screen-printed layer, and a light-solidified layer. The substrate has a first surface and a second surface, and the first surface and the second surface are opposite. The screen-printed layer is formed on the first surface of the substrate by a screen-printing process. The light-solidified layer is formed on the second surface of the substrate by a light-solidification and imprinting process. The screen-printed layer has a plurality of screen point patterns. The light-solidified layer has a plurality of micro-structures.

What is claimed is: 
     
         1 . A method of manufacturing a light guide plate, comprising steps of:
 (a) preparing a substrate having a first surface and a second surface, wherein the first surface and the second surface are opposite;   (b) using a screen-printing process to form a first screen-printed layer on the first surface of the substrate, wherein the first screen-printed layer has a plurality of screen point patterns; and   (c) using a light-solidification and imprinting process to form a light-solidified layer on the second surface of the substrate, wherein the light-solidified layer has a plurality of micro-structures.   
     
     
         2 . The method of  claim 1 , wherein the step (b) comprises steps of:
 (b 1 ) using a screen-printing plate to transfer an ink onto the first surface of the substrate; and   (b 2 ) thermally curing the ink to form the first screen-printed layer.   
     
     
         3 . The method of  claim 1 , wherein the step (c) comprises steps of:
 (c 1 ) coating a light-solidified resin on the second surface of the substrate;   (c 2 ) rolling the substrate to make the light-solidified resin coated on the second surface fit with a mold corresponding to the plurality of micro-structures; and   (c 3 ) irradiating UV to the light-solidified resin to form the light-solidified layer having the plurality of micro-structures.   
     
     
         4 . The method of  claim 1 , wherein the step (c) is performed before the step (b), and between the step (c) and the step (b) the method further comprises a step of:
 (d) forming a protection film on the light-solidified layer having the plurality of micro-structures.   
     
     
         5 . The method of  claim 1 , further comprising a step of:
 (e) using the screen-printing process to form a second screen-printed layer on the light-solidified layer.