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    • 6. 发明申请
    • Backlight unit
    • 背光单元
    • US20090147532A1
    • 2009-06-11
    • US12289426
    • 2008-10-28
    • Masato TayaTokutarou KomatsuYasushi SugimotoTadashi OkudaTeruo Teshima
    • Masato TayaTokutarou KomatsuYasushi SugimotoTadashi OkudaTeruo Teshima
    • F21V5/02
    • G02B6/0053G02B6/0038G02B6/0051
    • A backlight unit includes: light guide plate surrounded by main surfaces and end surfaces, one end surface facing a light source designated as entrance surface, one main surface designated as emitting surface; first prism sheet provided above the light guide plate, having first prism columns on a top surface and second prism columns on a bottom surface, each first prism column has first ridge line parallel or perpendicular to the entrance surface, each second prism column has second ridge line extending in a different direction from the first ridge line; second prism sheet provided above the first prism sheet, having third prism columns abutting each other on a top surface, each third prism column has third ridge line extending in a direction different from the first and second ridge lines; and reflection sheet facing the light guide plate below the light guide plate.
    • 背光单元包括:由主表面和端面包围的导光板,面向被指定为入射面的光源的一个端面,被指定为发射面的一个主表面; 第一棱镜片,其设置在导光板的上方,在顶面上具有第一棱镜柱,在底面上具有第二棱镜柱,每个第一棱镜柱具有与入射面平行或垂直的第一棱线,每个第二棱镜柱具有第二棱 线沿与第一脊线不同的方向延伸; 第二棱镜片,其设置在第一棱镜片的上方,具有在顶面上彼此抵接的第三棱镜柱,每个第三棱镜柱具有沿与第一和第二脊线不同的方向延伸的第三棱线; 以及与导光板相对的导光板的反射片。