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    • 46. 发明公开
    • 로컬 디밍 기능을 갖는 도광판, 이를 구비한 백라이트 유닛, 및 액정표시장치
    • 具有本地调光功能的光导板,包括其的后光单元和液晶显示
    • KR1020120090181A
    • 2012-08-17
    • KR1020110010452
    • 2011-02-07
    • 동우 화인켐 주식회사
    • 이용준
    • F21V8/00H01J17/38G02B6/36G02B6/12
    • G02B6/003G02B6/3612G02B2006/12071H01J17/38
    • PURPOSE: A light guide plate and a backlight unit including the same, and a liquid crystal display are provided to give a local dimming function to an edge type backlight unit by enhancing linearity of light from an LED light source, thereby enhancing contrast ratio of the liquid crystal display. CONSTITUTION: A light guide plate has a light incidence surface(10) on the side. The light incidence surface receives light from a point type light source. The light guide plate has a light emitting surface(20) at the front. The light emitting surface emits the guided light. The light guide plate minimizes dispersion of the light of the point type light source in a backlight unit. The light guide plate selectively controls direction of the light. A plurality of ellipse projection units is formed on one surface or both surfaces of the rear surface(30) which is opposite to the light emitting surface of the light guide plate.
    • 目的:提供导光板和包括该导光板的背光单元和液晶显示器,通过提高来自LED光源的光的线性度,向边缘型背光单元赋予局部调光功能,从而提高了对比度 液晶显示器。 构成:导光板在侧面具有光入射面(10)。 光入射表面接收来自点型光源的光。 导光板在前面具有发光面(20)。 发光面发射引导光。 导光板使点型光源的光在背光单元中的分散最小化。 导光板选择性地控制光的方向。 在与导光板的发光面相反的后表面(30)的一个表面或两个表面上形成多个椭圆投影单元。