METHOD FOR MAKING LIGHT GUIDE PLATE

摘要

A method includes having test plate and light source, the test plate having matrix of first pattern-dots and equally divided into blocks. Intersecting surfaces between the first pattern-dots and the first bottom surface have the same radius rx. Detecting a luminous flux ΦX of each block and a total luminous flux Φt of the test plate when light source is activated; calculating an average luminous flux Φave; calculating the radius rx1 of the first pattern-dots in each block assuming that an actual luminous flux of each block is equal to the average luminous flux according to the formula rx1=rx×sqrt (Φave/ΦX). Providing a substrate having the same structure as the base and the substrate being divided into blocks according to the same principle as the test plate. Forming second pattern-dots having the same arrangements as the first pattern-dots and having radius of rx1 in each block.

主权项

1. A method for making a light guide plate comprising:
providing a test plate and a light source, the test plate comprising a base and a plurality of first pattern-dots, the base comprising a first bottom surface, a first light output surface opposite to the first bottom surface, and a first light incident surface interconnected between the first bottom surface and the first light output surface, the first pattern-dots arranged on the first bottom surface in a matrix and equally divided into a number of blocks, intersecting surfaces between the first pattern-dots and the first bottom surface having the same radius rX, X representing a code of each block (X=A, B, C, D, E, F . . . ), the line spacing of the first pattern-dots in each block being equal to the column spacing of the first pattern-dots in the same block; activating the light source and detecting a luminous flux φX of each of the blocks and a total luminous flux φt of the test plate; calculating an average luminous fluxφave according to the formula: φave=φt/n , wherein n represents the number of the blocks and n>2; and calculating the radius rX1 of the first pattern-dots in each block assuming that an actual luminous flux φX0 of each block equals to the average luminous flux φave of the test plate according to the formula:rX1=rXφaveφX; providing a substrate, the substrate having the same structure as the base and divided into the same number of blocks according to the same principle as the test plate; and forming a number of second pattern-dots having the same arrangement as the first pattern-dots and having radius of rX1 in each block on a second bottom surface of the substrate, thereby forming the light guide plate.