Patent ID: 8115890
Filing Date: 2012-02-14
Classification: G02B,G02F

Abstract:
1. A backlight unit, comprising: a plural number of sets of at least one or more of light source(s) and a light guidance plate for guiding lights from said light source(s) to a side of a liquid crystal panel, to be emitted therefrom, wherein said light source(s) is/are disposed on one end side of said light guidance plate, and other set of light source is disposed on a rear surface side of the other end of said light guidance plate opposite to said one end, and a gap or groove is formed mutually between each of the light guidance plates in said plural number of sets, and if assuming that width of said gap or groove is “d”, distance between a light incident surface of said liquid crystal panel and a light emission surface of said light guidance plate, or distance between a light incident surface of an optical member disposed between said liquid crystal panel and said light guidance plate and a light emission surface of said light guidance plate is “h”, and further 2.0 mm>d≧0.1 mm and 10.0 mm>h≧0.4 mm, then the following condition is satisfied: