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公开(公告)号:US07628526B2
公开(公告)日:2009-12-08
申请号:US11312716
申请日:2005-12-21
申请人: Man Hoan Lee , Ji Su Yoon , Sung Keun Lee , Won Taek Moon , Jun Kyu Paik , Young Hun Jeong
发明人: Man Hoan Lee , Ji Su Yoon , Sung Keun Lee , Won Taek Moon , Jun Kyu Paik , Young Hun Jeong
IPC分类号: F21V5/00
CPC分类号: G02B6/0053 , G02B6/0038 , G02B6/0046 , G02B6/0051
摘要: A back light unit is disclosed, which improves condensing efficiency of light and viewing angle characteristics. The back light unit includes at least one lamp generating light, a light guide plate emitting light across a surface thereof using the light generated from the lamp, a diffusion sheet arranged above the light guide plate to diffuse the light passing through the light guide plate, a first condensing sheet condensing the light from the diffusion sheet using a plurality of first elliptical condensing patterns arranged on the diffusion sheet in a first direction, and a second condensing sheet further condensing the light from the first condensing sheet using a plurality of second elliptical condensing patterns arranged on the first condensing sheet in a second direction crossing the first direction.
摘要翻译: 公开了一种背光单元,其提高了光的聚光效率和视角特性。 背光单元包括至少一个发光的灯,使用从灯产生的光发射光的导光板,布置在导光板上方以扩散通过导光板的光的漫射片, 第一聚光片,其使用在第一方向上布置在扩散片上的多个第一椭圆形聚集图案来聚集来自漫射片的光;以及第二聚光片,其进一步使来自第一聚光片的光使用多个第二椭圆冷凝 沿着与第一方向交叉的第二方向布置在第一聚光片上的图案。