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    Display with optical sensor for brightness compensation
    3.
    发明授权
    Display with optical sensor for brightness compensation 有权

    公开(公告)号：US11145249B1

    公开(公告)日：2021-10-12

    申请号：US16930204

    申请日：2020-07-15

    申请人： Apple Inc.

    发明人： Wanglei Han ,  Akshay Bhat ,  Michael H. Lim ,  Kyung Hoae Koo ,  Jiayi Jin ,  David A. Doyle ,  Tae-Wook Koh ,  Jared S. Price ,  Yifan Zhang ,  Mahdi Nezamabadi

    IPC分类号： G09G3/3225 ,  G09G3/00

    摘要： A display may include pixels (such as light-emitting diode pixels) that are susceptible aging effects (burn-in). To help avoid visible artifacts caused by burn-in during operation of the display, compensation circuitry may be used to compensate image data for the display. An optical sensor may be included behind the pixels to directly measure pixel brightness levels. The optical sensor may provide optical sensor data from testing operations to the compensation circuitry. The optical sensor may gather data during burn-in testing operations. During the burn-in testing operations, pixel groups including both high-usage pixels and low-usage pixels may sequentially emit light while the optical sensor gathers data. Brightness differences between the high-usage pixels and low-usage pixels may be used to characterize pixel aging in the display and compensate image data to mitigate visible artifacts caused by burn-in. The optical sensor may also gather data during global brightness testing operations.

    Electronic devices with display burn-in mitigation
    4.
    发明授权
    Electronic devices with display burn-in mitigation 有权

    公开(公告)号：US10983482B2

    公开(公告)日：2021-04-20

    申请号：US16277842

    申请日：2019-02-15

    申请人： Apple Inc.

    发明人： Tae-Wook Koh ,  Yiqiang Nie ,  Yifan Zhang ,  Giovanni M. Agnoli ,  Paul S. Drzaic ,  David A. Doyle

    IPC分类号： G06F1/00 ,  G04G9/00 ,  G09G3/20 ,  G09G3/3225

    摘要： An electronic device such as a wristwatch device or other device may have a display. The display may be used to continuously display information such as watch face information. A watch face image on the display may contain watch face elements such as watch face hands, watch face indices, and complications. To reduce burn-in risk for watch face elements, control circuitry in the electronic device may impose burn-in constraints on attributes of the watch face elements such as peak luminance constraints, dwell time constraints, color constraints, constraints on the shape of each element, and constraints on element style. These constraints may help avoid situations in which static elements such as watch face indices create more burn-in than dynamic elements such as watch face hands.

    Electronic Devices With Display Burn-in Mitigation
    5.
    发明申请
    Electronic Devices With Display Burn-in Mitigation 审中-公开

    公开(公告)号：US20200218204A1

    公开(公告)日：2020-07-09

    申请号：US16277842

    申请日：2019-02-15

    申请人： Apple Inc.

    发明人： Tae-Wook Koh ,  Yiqiang Nie ,  Yifan Zhang ,  Giovanni M. Agnoli ,  Paul S. Drzaic ,  David A. Doyle

    IPC分类号： G04G9/00 ,  G09G3/20 ,  G09G3/3225

    摘要： An electronic device such as a wristwatch device or other device may have a display. The display may be used to continuously display information such as watch face information. A watch face image on the display may contain watch face elements such as watch face hands, watch face indices, and complications. To reduce burn-in risk for watch face elements, control circuitry in the electronic device may impose burn-in constraints on attributes of the watch face elements such as peak luminance constraints, dwell time constraints, color constraints, constraints on the shape of each element, and constraints on element style. These constraints may help avoid situations in which static elements such as watch face indices create more burn-in than dynamic elements such as watch face hands.

    Burn-in statistics with luminance based aging
    8.
    发明授权
    Burn-in statistics with luminance based aging 有权

    公开(公告)号：US11164540B2

    公开(公告)日：2021-11-02

    申请号：US16711319

    申请日：2019-12-11

    申请人： Apple Inc.

    发明人： Peter F. Holland ,  Mahesh B. Chappalli ,  Yifan Zhang ,  Tae-Wook Koh

    IPC分类号： G09G5/10

    摘要： An electronic device may include an electronic display and a display pipeline. The electronic display may include multiple pixels to display images based at least in part on pixel data. The display pipeline may receive image data and process the image data to determine the pixel data. The display pipeline may include burn-in compensation circuitry to apply gains to the image data based at least in part on burn-in statistics to generate the pixel data. The gain to be applied to the image data for a pixel of the electronic display is determined by the burn-in compensation circuitry, based at least in part on an emission duty cycle of the pixel, to compensate the image data for the pixel for burn-in related aging of the pixel.