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    • 9. 发明授权
    • Liquid crystal display module comprising a transparent media layer interposed between a reflection polarizing plate and an optical sheet
    • 液晶显示模块包括介于反射偏光板和光学片之间的透明介质层
    • US08928843B2
    • 2015-01-06
    • US11821725
    • 2007-06-25
    • Kenichi Harada
    • Kenichi Harada
    • G02F1/1335F21V8/00
    • G02B6/0056G02F1/133536G02F1/13362G02F2202/40
    • An object of the present invention is to provide an optical unit and a backlight unit which can markedly enhance utilization efficiency of rays of light and dramatically increase luminance, and which are suited for immediate beneath type liquid crystal display modules and the like. The optical unit of the present invention is a rectangular layered structural member having a reflection polarizing plate, an optical sheet superposed on the back face side of the reflection polarizing plate, and a transparent media layer filled between the reflection polarizing plate and the optical sheet. This optical sheet includes a resin substrate film having an optical anisotropy, and the absolute value of the angle of the crystal orientation of the substrate film with respect to the transmission axial orientation of the reflection polarizing plate is π/8 or greater and 3π/8 or less. The retardation value of the substrate film is preferably 70 nm or greater and 320 nm or less. The optical sheet preferably has an optical layer laminated on one face of the substrate film. The liquid crystal display module of the present invention has a liquid crystal display element, the optical unit, and an immediate beneath type backlight.
    • 本发明的目的是提供一种能够显着提高光线的利用效率并显着提高亮度的光学单元和背光单元,适用于立即下方的液晶显示模块等。 本发明的光学单元是具有反射偏振片,叠置在反射偏振板的背面侧的光学片和填充在反射偏光板和光学片之间的透明介质层的矩形层状结构件。 该光学片包括具有光学各向异性的树脂基板膜,并且基板膜的相对于反射偏光板的透射轴向取向的晶体取向角的绝对值为> / 8以上且3&pgr; / 8以下。 基板膜的延迟值优选为70nm以上且320nm以下。 光学片优选具有层叠在基板膜的一面上的光学层。 本发明的液晶显示模块具有液晶显示元件,光学单元和立即型背光源。