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    • 8. 发明申请
    • LIQUID CRYSTAL DISPLAY DEVICE
    • 液晶显示装置
    • US20120044440A1
    • 2012-02-23
    • US13260883
    • 2010-03-29
    • Motohiro YamaharaAkiyoshi KanemitsuTomonori Miyamoto
    • Motohiro YamaharaAkiyoshi KanemitsuTomonori Miyamoto
    • G02F1/1335
    • G02F1/133504G02B5/0221G02B5/0242G02B5/0278G02F1/133606G02F2001/133607
    • A liquid crystal display device provided with a back light device can relieve lamp images without lowering the utilization efficiency of the light emitted from the back light device.A liquid crystal display device 100, comprising, in sequence: a back light device 2; a first light diffusing plate 3; prism sheets 4a and 4b; a first polarizing plate 5; a liquid crystal cell 1; a second polarizing plate 6; and a second light diffusing plate 7, wherein the first polarizing plate 5 and the second polarizing plate 6 are arranged so that absorption axes thereof are in crossed Nicol relation, wherein the first light diffusing plate 3 has a characteristic that, when parallel light is made incident from the back face of the first light diffusing plate 3 in the direction of the perpendicular of the back face, the ratio (I20/I0) between the intensity (I20) of the transmitted light emitted in the direction forming an angle of 20° with respect to the direction of the perpendicular, and the intensity (I0) of the transmitted light emitted in the direction forming an angle of 0° with respect to the direction of the perpendicular is 30% or less, and the second light diffusing plate 7 has a light diffusing layer 72 comprising a translucent resin 721 and translucent fine particles 722 dispersed in the translucent resin 721.
    • 设置有背光装置的液晶显示装置可以减轻灯图像而不降低从背光装置发射的光的利用效率。 液晶显示装置100,依次包括背光装置2; 第一光漫射板3; 棱镜片4a和4b; 第一偏振板5; 液晶单元1; 第二偏振板6; 以及第二光扩散板7,其中第一偏振片5和第二偏振片6被布置成使其吸收轴处于正交尼科耳关系,其中第一光漫射板3具有当制成平行光时的特征 从第一光漫射板3的背面沿着背面的垂直方向入射,在形成角度为20°的方向上发射的透射光的强度(I20)之间的比(I20 / I0) 并且相对于垂直方向成为0°角的方向发射的透射光的强度(I0)为30%以下,第二光扩散板7 具有包含半透明树脂721的散光层72和分散在半透明树脂721中的半透明细颗粒722。
    • 10. 发明授权
    • Liquid crystal display device
    • 液晶显示装置
    • US07609336B2
    • 2009-10-27
    • US11934960
    • 2007-11-05
    • Akiyoshi KanemitsuMotohiro YamaharaHiroyuki Kumasawa
    • Akiyoshi KanemitsuMotohiro YamaharaHiroyuki Kumasawa
    • G02F1/1335
    • G02F1/133606G02B5/0242G02B5/0278
    • The present invention provides a liquid crystal display device capable of achieving natural and high-quality color display without reddish color shift, not only when viewed in the normal direction but also when viewed obliquely.A liquid crystal display device 1 of the present invention includes a light diffuser plate 3, a light source 2 disposed on the back side of the light diffuser plate 3, and a liquid crystal panel 30 disposed on the front side of the light diffuser plate 3, wherein the light diffuser plate 3 is constituted by dispersing light diffusing particles in a transparent material, and the absolute value of a difference Δn in the refractive index between the transparent material and the light diffusing particles and a 50% cumulative particle diameter D50 (μm) of the light diffusing particles satisfy a relation 0.01≦Δn×D50≦0.25 or 0.61≦Δn×D50≦0.75.
    • 本发明提供一种液晶显示装置,不仅在从正常方向观察时,而且在倾斜观察时,能够实现无偏色变化的自然色彩和高品质彩色显示。 本发明的液晶显示装置1包括:光漫射板3,设置在光扩散板3的背面的光源2;以及配置在光漫射板3的前侧的液晶面板30 其特征在于,所述光扩散板3通过将透光材料中的光漫射粒子分散,透明材料与光漫射粒子的折射率之差Δttan的绝对值和50%的累积粒径D50 )满足0.01 <= DeltanxD50 <= 0.25或0.61 <= DeltanxD50 <= 0.75的关系。