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    CONTENT DEPENDENT COMMON VOLTAGE DRIVER SYSTEMS AND METHODS
    11.
    发明申请
    CONTENT DEPENDENT COMMON VOLTAGE DRIVER SYSTEMS AND METHODS 审中-公开

    公开(公告)号：US20180061355A1

    公开(公告)日：2018-03-01

    申请号：US15667366

    申请日：2017-08-02

    Applicant: Apple Inc.

    Inventor： Fenghua Zheng ,  Howard H. Tang ,  Sandro H. Pintz

    IPC: G09G3/36 ,  H03F1/02 ,  G06T1/20 ,  G09G3/20 ,  G09G5/00

    CPC classification number: G09G3/3685 ,  G06T1/20 ,  G09G3/2092 ,  G09G3/3614 ,  G09G3/3655 ,  G09G5/003 ,  G09G2360/16 ,  H03F1/0211 ,  H03F2200/507 ,  H03F2200/511

    Abstract: Systems and methods are provided for improving displayed image quality of an electronic display with reduced power consumption. In some embodiments, a display pixel in the electronic display includes a pixel electrode and a common electrode. A pixel electrode driver electrically coupled to the first display pixel writes the display pixel by supplying a pixel voltage signal to the pixel electrode. A common electrode driver electrically coupled to the common electrode includes a power amplifier that supplies a common voltage signal to the common electrode to predictively offset net charge accumulation expected in the common electrode; a first power supply rail selectively connectable to the power amplifier based on a target voltage of the common voltage signal; and a second power supply rail selectively connectable to the power amplifier based on the target voltage, in which the first and second power supply rails supply different voltages when connected.

    Multi-zoned variable VCOM control
    14.
    发明授权
    Multi-zoned variable VCOM control 有权

    公开(公告)号：US10380937B2

    公开(公告)日：2019-08-13

    申请号：US15246666

    申请日：2016-08-25

    Applicant: Apple Inc.

    Inventor： Howard H. Tang ,  Paolo Sacchetto ,  Chaohao Wang ,  Szu-Hsien Lee ,  Patrick Bennett ,  Fenghua Zheng

    IPC: G09G3/20 ,  G09G3/36

    Abstract: The disclosure relates to systems and methods for reducing VCOM settling periods. A number of pixels is sub-divided into a plurality of regions. The pixels are configured to transmit light. A common voltage (VCOM) driving circuit is configured to drive a common electrode of the pixels. Moreover, each of a number of VCOM driving circuits includes a variable resistor configured to be driven to a resistance level based at least in part on which region of the plurality of regions includes an active pixel within the region. Furthermore, a resistance level is set and based at least in part on where the active pixel is located.

    CONTENT-BASED VCOM DRIVING
    16.
    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。

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