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    Content-based VCOM driving
    1.
    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.

    Digital compensation for V-gate coupling
    4.
    发明授权
    Digital compensation for V-gate coupling 有权

    公开(公告)号：US10043472B2

    公开(公告)日：2018-08-07

    申请号：US14976853

    申请日：2015-12-21

    Applicant: Apple Inc.

    Inventor： Chaohao Wang ,  Paolo Sacchetto ,  Howard H. Tang

    IPC: G09G3/36

    CPC classification number: G09G3/3655 ,  G09G3/2011 ,  G09G3/3614 ,  G09G3/3648 ,  G09G2300/0426 ,  G09G2300/043 ,  G09G2300/0465 ,  G09G2310/0281 ,  G09G2310/08 ,  G09G2320/0209

    Abstract: A display device may include a source line that provides a data line signal to a pixel of the display device, a gate line that provides a gate signal to a switches associated with the pixel, and a voltage gate line disposed parallel to the source line and coupled to the gate line at a cross point node. The display device may also include a driver circuit that receives a pixel value to provide to the pixel, determines a compensation amount for the pixel value based on an expected kickback voltage present on the pixel due to a coupling effect between the source line and the voltage gate line, generates a compensated data line signal based on the compensation value and the pixel value, and provides the compensated data line signal to the pixel via the source line.

    MULTI-ZONED VARIABLE VCOM CONTROL
    6.
    发明申请
    MULTI-ZONED VARIABLE VCOM CONTROL 审中-公开
    多区可变VCOM控制

    公开(公告)号：US20170061864A1

    公开(公告)日：2017-03-02

    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

    CPC classification number: G09G3/2096 ,  G09G3/3655 ,  G09G3/3666 ,  G09G2300/0426 ,  G09G2310/0291 ,  G09G2320/0223 ,  G09G2320/0233 ,  G09G2320/0257 ,  G09G2320/0266

    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.

    Abstract translation: 本公开涉及用于减少VCOM建立周期的系统和方法。 多个像素被细分为多个区域。 像素被配置为透射光。 公共电压（VCOM）驱动电路被配置为驱动像素的公共电极。 此外，多个VCOM驱动电路中的每一个包括被配置为至少部分地基于该区域中的有源像素的多个区域的哪个区域被驱动到电阻电平的可变电阻器。 此外，设置电阻水平并且至少部分地基于活动像素位于何处。

    V-GATE LAYOUT AND GATE DRIVE CONFIGURATION
    7.
    发明申请
    V-GATE LAYOUT AND GATE DRIVE CONFIGURATION 有权
    V-GATE布局和门驱动配置

    公开(公告)号：US20170061837A1

    公开(公告)日：2017-03-02

    申请号：US14995796

    申请日：2016-01-14

    Applicant: APPLE INC.

    Inventor： Howard H. Tang ,  Wei Chen ,  Paolo Sacchetto ,  Chaohao Wang ,  Chun-Yao Huang ,  Hao-Lin Chiu

    IPC: G09G3/00

    CPC classification number: G09G3/00 ,  G09G3/20 ,  G09G2300/0426 ,  G09G2310/0218 ,  G09G2310/0278 ,  G09G2310/0281 ,  G09G2320/0209 ,  G09G2320/0219

    Abstract: A display device may include a plurality of pixels, a plurality of source lines that may provide a plurality of data line signals to the plurality of pixels, a plurality of gate lines that may provide a plurality of gate signals to a plurality of switches associated with the plurality of pixels, and a plurality of voltage gate lines disposed parallel to the plurality of source lines and coupled to the plurality of gate lines at a plurality of cross point nodes. The plurality of cross point nodes are positioned in a pseudo random order across the display device.

    Abstract translation: 显示装置可以包括多个像素，可以向多个像素提供多条数据线信号的多条源极线，可以向与多个像素相关联的多个开关提供多个栅极信号的多条栅极线 所述多个像素以及与所述多个源极线平行设置并且在多个交叉点节点处耦合到所述多个栅极线的多个电压栅极线。 多个交叉点节点以跨越显示设备的伪随机顺序定位。

    Content dependent common voltage driver systems and methods
    9.
    发明授权
    Content dependent common voltage driver systems and methods 有权

    公开(公告)号：US10311822B2

    公开(公告)日：2019-06-04

    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

    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.

    Pixel signal compensation for a display panel
    10.
    发明授权
    Pixel signal compensation for a display panel 有权

    公开(公告)号：US10276085B2

    公开(公告)日：2019-04-30

    申请号：US14973517

    申请日：2015-12-17

    Applicant: Apple Inc.

    Inventor： Chaohao Wang ,  Paolo Sacchetto ,  Marc Albrecht ,  Christopher P. Tann ,  Shih-Chyuan Fan Jiang ,  Howard H. Tang ,  James E. C. Brown ,  Zhibing Ge

    IPC: G09G3/20

    Abstract: This application relates to systems, methods, and apparatus for compensating voltage for pixels of a display panel based on the location of the pixels within the display panel. An amount of voltage compensation is assigned to each pixel or a group of pixels within the display panel in accordance with a calibration of the display panel. During operation of the display panel, pixel data is generated for a location of the display panel, and the pixel data is modified according to the amount of voltage compensation corresponding to the location. By modifying the pixel data in this way, spatial variations in voltage across the display panel can be mitigated in order to reduce the occurrence of certain display artifacts at the display panel.

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