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    CONTENT-BASED VCOM DRIVING
    4.
    发明申请
    CONTENT-BASED VCOM DRIVING 有权
    基于内容的VCOM驱动

    公开(公告)号：US20160260407A1

    公开(公告)日：2016-09-08

    申请号：US14640931

    申请日：2015-03-06

    Applicant: APPLE INC.

    Inventor： Fenghua Zheng ,  Howard H. Tang ,  James C. Aamold ,  Sandro H. Pintz ,  Chaohao Wang ,  Paolo Sacchetto

    IPC: G09G3/36 ,  G09G3/00

    CPC classification number: G09G3/3614 ,  G09G3/3655 ,  G09G2320/0223 ,  G09G2320/029 ,  G09G2340/16

    Abstract: Methods and systems for compensating for VCOM variations include determining a voltage change in pixels between frames to be displayed on an electronic display. Based on the determined voltage change, VCOM variation is calculated based on coupling the VCOM to one or more data lines of the electronic display. VCOM compensation is determined and applied to offset for the VCOM variation. Using the VCOM offset, subsequent pixel content for the one or more pixels is written using the compensated VCOM.

    Abstract translation: 用于补偿VCOM变化的方法和系统包括确定要在电子显示器上显示的帧之间的像素中的电压变化。 基于确定的电压变化，基于将VCOM耦合到电子显示器的一个或多个数据线来计算VCOM变化。 VCOM补偿被确定并应用于偏移VCOM变化。 使用VCOM偏移，使用补偿的VCOM写入一个或多个像素的后续像素内容。

    Content-based VCOM driving
    5.
    发明授权
    Content-based VCOM driving 有权

    公开(公告)号：US10395611B2

    公开(公告)日：2019-08-27

    申请号：US15701001

    申请日：2017-09-11

    Applicant: Apple Inc.

    Inventor： Fenghua Zheng ,  Howard H. Tang ,  James C. Aamold ,  Sandro H. Pintz ,  Chaohao Wang ,  Paolo Sacchetto

    IPC: G09G3/20 ,  G09G3/36

    Abstract: Methods and systems for compensating for VCOM variations include determining a voltage change in pixels between frames to be displayed on an electronic display. Based on the determined voltage change, VCOM variation is calculated based on coupling the VCOM to one or more data lines of the electronic display. VCOM compensation is determined and applied to offset for the VCOM variation. Using the VCOM offset, subsequent pixel content for the one or more pixels is written using the compensated VCOM.

    Luminance uniformity correction for display panels
    6.
    发明授权
    Luminance uniformity correction for display panels 有权

    公开(公告)号：US10235936B2

    公开(公告)日：2019-03-19

    申请号：US15064230

    申请日：2016-03-08

    Applicant: Apple Inc.

    Inventor： Johan L. Piper ,  James C. Aamold

    IPC: G09G3/30 ,  G09G3/3233

    Abstract: This application relates to systems, methods, and apparatus for reducing non-uniform luminance of an organic light emitting diode (OLED) display panel. In order to reduce non-uniform luminance, the display panel can compensate for an amount of voltage drop that is occurring across a line of the display panel. The voltage drop can be estimated based on image data provided to the display panel and one or more calibration constants stored by the display panel. The calibration constants can be generated during manufacturing of the display panel in order to equip the display panel with an accurate means for predicting voltage drop across each line of the display panel. During calibration, a predetermined display pattern is output by the display panel. Thereafter, an amount of luminance projected from the display panel is compared with an expected amount of luminance associated with the predetermined display pattern to calculate the calibration constant.

    Luminance uniformity correction for display panels
    7.
    发明授权
    Luminance uniformity correction for display panels 有权

    公开(公告)号：US10134334B2

    公开(公告)日：2018-11-20

    申请号：US15262449

    申请日：2016-09-12

    Applicant: Apple Inc.

    Inventor： Johan L. Piper ,  James C. Aamold ,  Shengkui Gao ,  Hung Sheng Lin ,  Hyunwoo Nho

    IPC: G09G3/36 ,  G09G3/3233

    Abstract: In order to reduce non-uniform luminance and/or chrominance, a display panel can determine, on a pixel-by-pixel basis in at least a row of pixels, a correction for voltage drops in the display panel. The voltage drop can be estimated based on a state of pixels in the display panel corresponding to at least a portion of a current frame of image data and at least a portion of a previous frame of image data. Moreover, based on the correction, the display plane can modify on the pixel-by-pixel basis in at least the row: a supply voltage applied to the display panel; a digital representation of the image data in the current frame that correspond to the pixels; and pixel drive signals corresponding to the image data in the current frame. Furthermore, the correction may be based on a predefined calibration constant and/or may be dynamically calculated.

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