Side-edge backlight module having non-uniformly sized backlight sections and design method thereof

Abstract

A side-edge backlight module having non-uniformly sized backlight sections includes backlight sections that have relative sizes satisfying the condition that the backlight sections have higher ranks are of greater sizes. Ranking the backlight sections is made by conducting an simulation operation for a process of sectionalized lighting of backlight to display liquid crystal panel signals on the basis of uniformly sized backlight sections and conducting analysis of the number of zones where an interference signal appears and distance of the interference signal when each of backlight sections is lit in the simulation operation on the basis of uniformly sized backlight sections and ranking the backlight sections according to strength of cross-talking caused by the interference signal so that a backlight section having less strong cross-talking is set with a higher rank.

What is claimed is: 
     
         1 . A side-edge backlight module, comprising a number of backlight sections that are arranged side by side in a first direction to collectively define a planar smooth surface having a lateral edge with interfacing lines between the backlight sections located on the planar surface and substantially perpendicular to the lateral edge, the backlight sections receiving light projecting from the lateral edge in a second direction that is substantially perpendicular to the first direction and parallel to the planar surface, the backlight sections being adapted to correspond to and respectively illuminate sections of a display panel that receive image signals to be displayed with the light projecting from the lateral edge in the second direction, the backlight sections being ranked according to a predetermined rule and having non-uniform sizes such that the sizes of the backlight sections respectively correspond to the ranks of the backlight sections, wherein the rank of each specific one of the backlight sections is determined by strength of an interference signal resulting from cross-talking among the display panel sections when the specific one of the backlight sections is lit so that a backlight section has less strong cross-talking is set with a higher rank and the backlight sections are ranked according to the strengths of cross-talking that the backlight sections exhibit,
 wherein the sizes of the backlight sections are each variable and determined according to the ranks of the backlight sections.   
     
     
         2 . The side-edge backlight module as claimed in  claim 1 , wherein the number of backlight sections of the side-edge backlight module comprise first, second, third, fourth, and fifth backlight sections, which are grouped into first group that comprises the third backlight section, a second group that comprises the second and fourth backlight section, and a third group that comprises a first and fifth backlight section, where the backlight sections of the groups have non-uniform sizes, among which the third backlight section of the first group has the greatest size, the second and fourth backlight sections of the second group have the second greatest size, and the first and fifth backlight sections of the third group have the third greatest size. 
     
     
         3 . The side-edge backlight module as claimed in  claim 1 , wherein the number of backlight sections of the side-edge backlight module comprise first, second, third, and fourth backlight sections, among which the second backlight section has the greatest size, the first backlight section has the second greatest size, the third backlight section has the third greatest size, and the fourth backlight section has the fourth greatest size. 
     
     
         4 . The side-edge backlight module as claimed in  claim 1 , wherein the side-edge backlight module is of single short edge incidence. 
     
     
         5 . The side-edge backlight module as claimed in  claim 1 , wherein the side-edge backlight module is of dual short edge incidence. 
     
     
         6 . A side-edge backlight module, comprising a number of backlight sections that are arranged side by side in a first direction to collectively define a planar smooth surface having a lateral edge with interfacing lines between the backlight sections located on the planar surface and substantially perpendicular to the lateral edge, the backlight sections receiving light projecting from the lateral edge in a second direction that is substantially perpendicular to the first direction and parallel to the planar surface, the backlight sections being adapted to correspond to and respectively illuminate sections of a display panel that receive image signals to be displayed with the light projecting from the lateral edge in the second direction, the backlight sections being ranked according to a predetermined rule and having non-uniform sizes such that the sizes of the backlight sections respectively correspond to the ranks of the backlight sections, wherein the rank of each specific one of the backlight sections is determined by strength of an interference signal resulting from cross-talking among the display panel sections when the specific one of the backlight sections is lit so that a backlight section has less strong cross-talking is set with a higher rank and the backlight sections are ranked according to the strengths of cross-talking that the backlight sections exhibit;
 wherein the sizes of the backlight sections are each variable and determined according to the ranks of the backlight sections; 
 wherein the number of backlight sections of the side-edge backlight module comprise first, second, third, fourth, and fifth backlight sections, which are grouped into first group that comprises the third backlight section, a second group that comprises the second and fourth backlight section, and a third group that comprises a first and fifth backlight section, where the backlight sections of the groups have non-uniform sizes, among which the third backlight section of the first group has the greatest size, the second and fourth backlight sections of the second group have the second greatest size, and the first and fifth backlight sections of the third group have the third greatest size; and 
 wherein the side-edge backlight module is of single short edge incidence.