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    • 3. 发明公开
    • VIEWING ANGLE SWITCHABLE BACK LIGHT UNIT
    • 查看角度可切换背光单元
    • EP3187922A1
    • 2017-07-05
    • EP16205766.5
    • 2016-12-21
    • LG Display Co., Ltd.Covestro Deutschland AG
    • BANG, HyungseokRYU, SeungmanHYUN, JoobongLEE, YongkuKIM, DongyeonBRUDER, Friedrich-KarlWALZE, Günther
    • G02F1/13G02F1/1335G02B6/00
    • G02B6/0023G02B6/0028G02B6/0068G02F1/1323G02F1/133615
    • The present disclosure relates to a viewing angle switchable back light unit in which the general mode and the privacy mode in a liquid crystal display can be selected. The present disclosure suggests a thin film type back light unit comprising: a light guide film (LGF), a light radiator (VHOE), a first light source (LS1) and a light collimator (WLC). The light guide film (LGF) includes a light entering part (LIN) defined at one side, a light guiding part (LWG) extending from the one side to an opposite side of the one side, and a light radiating part (LOT) defined on one plane surface. The light radiator (VHOE) is disposed on the light radiating part (LOT). The first light source (LS1) is disposed as facing the light entering part (LIN). The light collimator (WLC) is disposed on the light entering part (LIN) as facing the first light source (LS1). The light collimator (WLC) receives an expanding light from the first light source (LS1), converts the expanding light into a collimated light, and provides the collimated light to the light entering part (LIN).
    • 本公开涉及可以选择液晶显示器中的一般模式和隐私模式的可视角度切换背光单元。 本公开提出一种薄膜型背光单元,其包括:导光膜(LGF),光辐射器(VHOE),第一光源(LS1)和光准直器(WLC)。 导光膜(LGF)包括在一侧限定的光进入部分(LIN),从该一侧延伸到该一侧的相反侧的导光部分(LWG)以及限定出的光发射部分(LOT) 在一个平面上。 光辐射器(VHOE)设置在光辐射部分(LOT)上。 第一光源(LS1)被布置为面对光入射部分(LIN)。 光准直器(WLC)设置在入光部分(LIN)上面向第一光源(LS1)。 光准直器(WLC)接收来自第一光源(LS1)的扩展光,将扩展光转换为准直光,并将准直光提供给光入射部(LIN)。
    • 7. 发明公开
    • VIEWING ANGLE SWITCHABLE BACK LIGHT UNIT
    • 美国麻省理工学院麻省理工学院
    • EP3115839A1
    • 2017-01-11
    • EP16176605.0
    • 2016-06-28
    • LG Display Co., Ltd.Covestro Deutschland AG
    • BANG, HyungseokRYU, SeungmanHYUN, JoobongBRUDER, Friedrich-Karl
    • G02F1/1335F21V8/00
    • G02B6/002G02B6/0028G02B6/005G02B6/0055G02B6/0068G02B6/0073G02F1/133615
    • The present disclosure relates to a viewing angle switchable back light unit in which the general mode and the privacy mode in a liquid crystal dissplay can be selected. The present disclosure suggests a thin film type back light unit comprising: a light guide film (LGF) including a light entering part (LIN) disposed at one side, a light changing part (LRE) disposed at another side and a light guiding part (LWG) connecting the light entering part (LIN) and the light changing part (LRE); a light radiating part (LOT) disposed on an upper surface of the light guide film (LGF); and a light source (LS) disposed at the light entering part (LIN) of the light guide film (LGF). The light entering part (LIN) includes a wedge light coupler (WLC) and a light deflection element (SHOE). The light changing part (LRE) includes a light reflecting pattern (RHOE). The light radiating part (LOT) includes a light radiating film (VHOE) providing some of the collimated lights as back lights.
    • 本公开涉及其中可以选择液晶分离器中的一般模式和隐私模式的视角可切换背光单元。 本公开内容提出一种薄膜型背光单元,其包括:导光膜(LGF),其包括设置在一侧的光进入部分(LIN),设置在另一侧的光改变部分(LRE)和导光部分 连接光进入部分(LIN)和光改变部分(LRE)的LWG); 设置在导光膜(LGF)的上表面上的光辐射部(LOT); 以及设置在导光膜(LGF)的光进入部分(LIN)处的光源(LS)。 光进入部分(LIN)包括楔形光耦合器(WLC)和光偏转元件(SHOE)。 光改变部(LRE)包括光反射图案(RHOE)。 光辐射部分(LOT)包括提供一些准直光作为背光的光辐射膜(VHOE)。