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    • 7. 发明申请
    • SURFACE ILLUMINATION APPARATUS AND LIQUID CRYSTAL DISPLAY USING SAME
    • 表面照明装置和使用相同的液晶显示器
    • US20110058122A1
    • 2011-03-10
    • US12919923
    • 2010-04-02
    • Shinichi ShikiiTatsuo ItohHiroyuki FuruyaShinichi Kadowaki
    • Shinichi ShikiiTatsuo ItohHiroyuki FuruyaShinichi Kadowaki
    • G02F1/1335F21V7/22
    • F21V9/14G02B6/0028G02B6/0038G02B6/0046G02B6/0056G02B6/0068G02F1/133536G02F1/13362
    • A surface illumination apparatus has: a plurality of light sources (12a, 12b) which emit lights; a light guiding plate (15) which allows the lights emitted from the light sources to enter through one of the side faces and emits the lights through one principal plane; a polarizing filter (19) which transmits lights in a predetermined polarizing direction and reflects lights in a polarizing direction perpendicular to the predetermined polarizing direction; a polarizing modulation plate (18) which performs predetermined modulation on the polarizing characteristics of the incident lights; and a reflection sheet (17) which regularly reflects the incident light. The polarizing filter and the polarizing modulation plate are disposed near the one principal plane of the light guiding plate, in order of the polarizing modulation plate and the polarizing filter from the light guiding plate side, the reflection sheet is disposed near the other principal plane of the light guiding plate on the opposite side to the one principal plane, at least two out of the lights emitted from the plurality of light sources include linearly polarized lights of which polarizing directions are perpendicular to each other in a stage of the lights entering the light guiding plate, and the polarizing modulation plate has a polarizing modulation cell (18a) which functions as a ½ wavelength plate, and a non-modulation cell (18b) which does not modulate the polarizing characteristics.
    • 表面照明装置具有发光的多个光源(12a,12b) 导光板(15),其允许从光源发射的光通过一个侧面进入,并通过一个主平面发射光; 偏振滤光器(19),其以预定的偏振方向透射光并反射与所述预定偏振方向垂直的偏振方向的光; 对入射光的偏振特性进行预定调制的偏光调制板(18) 以及规则地反射入射光的反射片(17)。 偏振滤光器和偏光调制板以导光板一侧的偏光调制板和偏振滤光器的顺序配置在导光板的一个主面附近,反射片设置在 所述导光板在与所述一个主平面相反的一侧上,从所述多个光源发出的光中的至少两个光包括在进入所述光的阶段中偏振方向彼此垂直的线偏振光 并且偏振调制板具有用作1/2波长板的偏振调制单元(18a)和不调制偏振特性的非调制单元(18b)。
    • 8. 发明授权
    • Surface illumination apparatus and liquid crystal display using same
    • 表面照明装置和使用其的液晶显示器
    • US08233113B2
    • 2012-07-31
    • US12919923
    • 2010-04-02
    • Shinichi ShikiiTatsuo ItohHiroyuki FuruyaShinichi Kadowaki
    • Shinichi ShikiiTatsuo ItohHiroyuki FuruyaShinichi Kadowaki
    • G02F1/1335
    • F21V9/14G02B6/0028G02B6/0038G02B6/0046G02B6/0056G02B6/0068G02F1/133536G02F1/13362
    • A surface illumination apparatus has: a plurality of light sources (12a, 12b) which emit lights; a light guiding plate (15) which allows the lights emitted from the light sources to enter through one of the side faces and emits the lights through one principal plane; a polarizing filter (19) which transmits lights in a predetermined polarizing direction and reflects lights in a polarizing direction perpendicular to the predetermined polarizing direction; a polarizing modulation plate (18) which performs predetermined modulation on the polarizing characteristics of the incident lights; and a reflection sheet (17) which regularly reflects the incident light. The polarizing filter and the polarizing modulation plate are disposed near the one principal plane of the light guiding plate, in order of the polarizing modulation plate and the polarizing filter from the light guiding plate side, the reflection sheet is disposed near the other principal plane of the light guiding plate on the opposite side to the one principal plane, at least two out of the lights emitted from the plurality of light sources include linearly polarized lights of which polarizing directions are perpendicular to each other in a stage of the lights entering the light guiding plate, and the polarizing modulation plate has a polarizing modulation cell (18a) which functions as a ½ wavelength plate, and a non-modulation cell (18b) which does not modulate the polarizing characteristics.
    • 表面照明装置具有发光的多个光源(12a,12b) 导光板(15),其允许从光源发射的光通过一个侧面进入,并通过一个主平面发射光; 偏振滤光器(19),其以预定的偏振方向透射光并反射与所述预定偏振方向垂直的偏振方向的光; 对入射光的偏振特性进行预定调制的偏光调制板(18) 以及规则地反射入射光的反射片(17)。 偏振滤光器和偏光调制板以导光板一侧的偏光调制板和偏振滤光器的顺序配置在导光板的一个主面附近,反射片设置在 所述导光板在与所述一个主平面相反的一侧上,从所述多个光源发出的光中的至少两个光包括在进入所述光的阶段中偏振方向彼此垂直的线偏振光 并且偏振调制板具有用作1/2波长板的偏振调制单元(18a)和不调制偏振特性的非调制单元(18b)。