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    • 6. 发明申请
    • BACKLIGHT UNIT AND DISPLAY DEVICE
    • 背光单元和显示设备
    • US20140043377A1
    • 2014-02-13
    • US14112327
    • 2012-04-16
    • Shigenori TanakaRyoh ArakiYoshinobu HirayamaToshihiro Yanagi
    • Shigenori TanakaRyoh ArakiYoshinobu HirayamaToshihiro Yanagi
    • F21V8/00G09G5/10
    • G02B6/0091G02B6/0036G02B6/0053G02B6/0061G02B6/0076G02F1/133615G09G5/10
    • A backlight unit (20) includes: light sources (4A, 4B); light guide members (2A, 2B), the light source (4A) being provided to a side surface of the light guide member (2A), the light source (4B) being provided to a side surface of the light guide member (2B), the light sources (4A, 4B) being provided across the light guide members (2A, 2b) in plane view; and an optical path changing member (1) for changing an optical path of light passing through the optical path changing member, the optical path changing member (1) having a light incidence surface (SUF1) for receiving light emitted directly from the light guide member (2A or 2B), and a light exit surface (SUF2) for emitting, directly to a display panel outside of the backlight unit (20), the light thus received via the light incidence surface (SUF1). This configuration makes it possible to large-size a backlight unit without the fear of display quality deterioration, and makes it possible for such a backlight unit to emit light with luminance directivity in different directions.
    • 背光单元(20)包括:光源(4A,4B); 导光构件(2A,2B),光源(4A)设置在导光构件(2A)的侧面,光源(4B)设置在导光构件(2B)的侧面, ,所述光源(4A,4B)在平面图中横跨所述导光部件(2A,2b)设置; 以及用于改变通过光路改变构件的光的光路的光路改变构件(1),具有用于接收从导光构件直接发射的光的光入射表面(SUF1)的光路改变构件(1) (2A或2B),以及用于经由光入射表面(SUF1)直接发射到背光单元(20)外部的显示面板的光出射表面(SUF2)。 该配置使得可以大幅度地降低背光单元,而不用担心显示质量恶化,并且使得这种背光单元能够以不同方向的亮度指向性发光。