Patent ID: 9684118
Date: 2017-06-20
CPC Classifications: G02B,G02F

Claim:
1. A method for improving luminance uniformity of a side-edge curved module by providing a backlight module comprising a light guide plate and a light source in such a way that a surface of the light guide plate comprises dots that are arranged through a process comprising the following steps: (1) dividing a display zone of a curved panel display zone of the side-edge curved module into a plurality of panel grid cells through horizontal lines and vertical lines that are imaginarily provided on the display zone and intersect each other to divide the display zone into a plurality of segments that respectively correspond to and form the plurality of panel grid cells on the display zone, and sequentially marking the plurality of grid cells as panel grid cells (2) dividing the light guide plate that is located exactly under the curved panel display zone into a plurality of light guide plate grid cells through horizontal lines and vertical lines that are imaginarily provided on the light guide plate and intersect each other to divide the light guide plate into a plurality of sections that respectively correspond to the and form the plurality of light guide plate grid cells, wherein the light guide plate grid cells are arranged to respectively correspond to the plurality of the panel grid cells, the dots that are provided on the surface of the light guide plate being such that each of the light guide plate grid cells comprises a number of the dots arranged therein to provide a dot density associated with the light guide plate grid cell, the dot density of the light guide plate grid cell being indicated by Pn, where n is between 1 and N; (3) measuring transmittance of each of the plurality of panel grid cells, the transmittance of each of the plurality of panel grid cells being indicated by tn, where n is between 1 and N; and (4) taking the transmittance tc of a predetermined one of the panel grid cells that is located close to a center of the curved panel display zone as a reference, the predetermined one of the panel grid cells being denoted panel grid cell c, where c is a natural number less than N and the dot density of one of the light guide plate grid cells, denoted light guide plate grid cell c and corresponding to the panel grid cell c is indicated by Pc, wherein the dot density Pn of a light guide plate grid cell n is set between Pcx0.25×tc/tn to Pc×4×tc/tn, where n is between 1 and N.