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    • 2. 发明授权
    • Electronic device and LC shutter for polarization-sensitive switching between transparent and diffusive states
    • 电子设备和LC快门,用于透明和漫射状态之间的偏振敏感切换
    • US08059232B2
    • 2011-11-15
    • US12028084
    • 2008-02-08
    • Jim ZhuangTomohiro IshikawaRobert Polak
    • Jim ZhuangTomohiro IshikawaRobert Polak
    • G02F1/1335
    • G02F1/1336G02F1/133528G02F1/133536G02F2001/133626
    • An electronic device (200) includes a display (202) and an LC shutter (204), at least a portion of which is operatively positioned over the display (202). The LC shutter (204) provides switching between a transparent state and a diffusive state with high image integrity, and high transmission in the transparent state. In one embodiment, the electronic device (200) further includes control logic (206) operatively coupled to the LC shutter (204) to provide control signals (212) to the LC shutter (204) to effect the transparent state. The LC shutter (204) includes a first dichroic polarizer (300), such as a broadband dichroic polarizer, a specular reflective polarizer (302), such as a broadband reflective polarizer, an LC cell (304), and a diffusive reflective polarizer (306). The LC cell (304) is interposed between the first dichroic polarizer (300) and the specular reflective polarizer (302). The diffusive reflective polarizer (306) is interposed between the LC cell (304) and the specular reflective polarizer (302). Related methods are also set forth.
    • 电子设备(200)包括显示器(202)和LC快门(204),其至少一部分可操作地定位在显示器(202)上方。 LC快门(204)提供在透明状态和具有高图像完整性的扩散状态和透明状态下的高透射率之间的切换。 在一个实施例中,电子设备(200)还包括可操作地耦合到LC快门(204)的控制逻辑(206),以向LC快门(204)提供控制信号(212)以实现透明状态。 LC快门(204)包括第一二向色偏振器(300),例如宽带二向色偏振器,镜面反射偏振器(302),例如宽带反射偏振器,LC单元(304)和漫反射偏振器 306)。 LC单元(304)插入在第一二向色偏振器(300)和镜面反射偏振器(302)之间。 扩散反射偏振器(306)介于LC单元(304)和镜面反射偏振器(302)之间。 还介绍了相关方法。
    • 4. 发明申请
    • ELECTRONIC DEVICE AND LC SHUTTER FOR POLARIZATION-SENSITIVE SWITCHING BETWEEN TRANSPARENT AND DIFFUSIVE STATES
    • 电子设备和液晶显示器,用于透明和扩散状态之间的极化感应开关
    • US20090201446A1
    • 2009-08-13
    • US12028084
    • 2008-02-08
    • Jim ZhuangTomohiro IshikawaRobert Polak
    • Jim ZhuangTomohiro IshikawaRobert Polak
    • G02F1/1335
    • G02F1/1336G02F1/133528G02F1/133536G02F2001/133626
    • An electronic device (200) includes a display (202) and an LC shutter (204), at least a portion of which is operatively positioned over the display (202). The LC shutter (204) provides switching between a transparent state and a diffusive state with high image integrity, and high transmission in the transparent state. In one embodiment, the electronic device (200) further includes control logic (206) operatively coupled to the LC shutter (204) to provide control signals (212) to the LC shutter (204) to effect the transparent state. The LC shutter (204) includes a first dichroic polarizer (300), such as a broadband dichroic polarizer, a specular reflective polarizer (302), such as a broadband reflective polarizer, an LC cell (304), and a diffusive reflective polarizer (306). The LC cell (304) is interposed between the first dichroic polarizer (300) and the specular reflective polarizer (302). The diffusive reflective polarizer (306) is interposed between the LC cell (304) and the specular reflective polarizer (302). Related methods are also set forth.
    • 电子设备(200)包括显示器(202)和LC快门(204),其至少一部分可操作地定位在显示器(202)上方。 LC快门(204)提供在透明状态和具有高图像完整性的扩散状态和透明状态下的高透射率之间的切换。 在一个实施例中,电子设备(200)还包括可操作地耦合到LC快门(204)的控制逻辑(206),以向LC快门(204)提供控制信号(212)以实现透明状态。 LC快门(204)包括第一二向色偏振器(300),例如宽带二向色偏振器,镜面反射偏振器(302),例如宽带反射偏振器,LC单元(304)和漫反射偏振器 306)。 LC单元(304)插入在第一二向色偏振器(300)和镜面反射偏振器(302)之间。 扩散反射偏振器(306)介于LC单元(304)和镜面反射偏振器(302)之间。 还介绍了相关方法。