Patent ID: 7901100

Claim:
A backlight module unit, comprising: a first light source; a second light source, spaced apart from the first light source along a first direction to define a first light source interval therebetween; a first optical barrier, spaced apart from the second light source along the first direction to define a first barrier interval therebetween; a third light source, spaced apart from the first light source along a second direction, differing from the first direction, to define a second light source interval therebetween; and a second optical barrier, spaced apart from the third light source along the second direction to define a second barrier interval therebetween; wherein the first barrier interval is substantially shorter than a half of the first light source interval, and the second barrier interval is substantially shorter than a half of the second light source interval; wherein the difference between the first barrier interval and a half of the first light source interval is from 1 millimeter (mm) to 4 millimeter (mm).