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    • 10. 发明授权
    • Displays with elevated backlight efficiency
    • 显示器具有提升的背光效率
    • US09568772B2
    • 2017-02-14
    • US14684758
    • 2015-04-13
    • Apple Inc.
    • Xinyu ZhuJun QiMeizi JiaoNicholas G. RolandVictor H. YinWei ChenMing XuCheng ChenZhibing Ge
    • G02F1/13363G02F1/1335F21V8/00
    • G02F1/13363G02B6/0053G02B6/0073G02F1/133504G02F1/133536G02F2001/133638G02F2413/01
    • An electronic device may be provided with a display mounted in a housing. The display may include a liquid crystal display module and a reflective polarizer having an in-plane optical axis. The display may also include a backlight unit that includes a light source, a light guide element, and a reflector film coupled to a backside of the light guide element. The display may also include a light retardation layer such as a quarter wave film. The quarter wave film may be arranged between the reflective polarizer and the reflector film of the backlight unit. Partially polarized light that is output from a front side of the light guide element may have a first component parallel to the in-plane optical axis and a second component perpendicular to the in-plane optical axis of the reflective polarizer. The second component may be reflected from the reflective polarizer.
    • 电子设备可以设置有安装在壳体中的显示器。 显示器可以包括液晶显示模块和具有面内光轴的反射偏振器。 显示器还可以包括背光单元,其包括光源,导光元件和耦合到导光元件的背面的反射膜。 显示器还可以包括诸如四分之一波片的光延迟层。 四分之一波片可以布置在反射偏振器和背光单元的反射膜之间。 从导光元件的前侧输出的部分偏振光可以具有平行于面内光轴的第一分量和垂直于反射型偏振器的平面内光轴的第二分量。 第二组分可以从反射偏振器反射。