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    DISPLAY PIXEL LUMINANCE STABILIZATION SYSTEMS AND METHODS
    51.
    发明申请
    DISPLAY PIXEL LUMINANCE STABILIZATION SYSTEMS AND METHODS 审中-公开

    公开(公告)号：US20200335046A1

    公开(公告)日：2020-10-22

    申请号：US16850936

    申请日：2020-04-16

    Applicant: Apple Inc.

    Inventor： Jie Won Ryu ,  Myungjoon Choi ,  Hyunsoo Kim ,  Hyunwoo Nho ,  Chin-Wei Lin ,  Shiping Shen ,  Kingsuk Brahma ,  Chaohao Wang ,  Shinya Ono ,  Alex H. Pai ,  Hassan Edrees

    IPC: G09G3/3291

    Abstract: Techniques for implementing and/or operating an electronic device, which includes a display pixel that emits light to facilitate displaying an image during an emission period and a data driver coupled to the display pixel via a data line. The data driver generates a data line voltage signal based on image data that indicates target luminance of the display pixel in the image and supplies the data line voltage signal to the data line during a non-emission period preceding the emission period to facilitate writing the image to the display pixel. Additionally, the data driver supplies an intermediate voltage greater than a ground voltage to the data line during the emission period in which the image is displayed to facilitate reducing luminance variation in the image resulting from a leakage current flowing between an internal node of the display pixel and the data line during the emission period.

    Electronic devices with displays
    52.
    发明授权
    Electronic devices with displays 有权

    公开(公告)号：US10726811B2

    公开(公告)日：2020-07-28

    申请号：US16326665

    申请日：2017-08-14

    Applicant: Apple Inc.

    Inventor： Sheng Zhang ,  Bennett S. Wilburn ,  Paolo Sacchetto ,  Chaohao Wang ,  Cheng Chen ,  Enkhamgalan Dorjgotov

    IPC: G09G5/36 ,  G06F3/147 ,  G09G5/10 ,  G09G3/3225

    Abstract: An electronic device may have a display such as an organic light-emitting diode display. Electronic devices may also include a number of sensors such as accelerometers and gaze detection sensors. A graphics processing unit (GPU) may render digital pixel values for pixels in the device display. Frames (F2) with long rendering times may cause latency. To reduce latency, an image frame may be displayed for an extended period of time (68) to wait for the subsequent frame (F2) to finish rendering. Once the subsequent image frame (F2) has finished rendering, the subsequent image frame may be displayed without delay. To increase the lifespan of the display, variable persistence may be used. Sensor data and other factors may be used to dynamically determine persistence for minimal motion blur and maximum display lifespan. Sensor data may also be used to determine refresh rates for different portions of the display.

    Common electrode driving and compensation for pixelated self-capacitance touch screen
    53.
    发明授权
    Common electrode driving and compensation for pixelated self-capacitance touch screen 有权

    公开(公告)号：US10534472B2

    公开(公告)日：2020-01-14

    申请号：US15687354

    申请日：2017-08-25

    Applicant: Apple Inc.

    Inventor： Chaohao Wang ,  Wonjae Choi ,  Paolo Sacchetto

    IPC: G06F3/044 ,  G06F3/041

    Abstract: A touch screen is disclosed. A plurality of common electrodes can be configured to operate as display circuitry during a display phase, and to operate as touch sensing circuitry during a touch sensing phase. The plurality of common electrodes can include a first common electrode associated with a first display pixel, and a second common electrode associated with a second display pixel. Circuitry can be configured to update the first display pixel at a first time while driving the first common electrode but not the second common electrode, and update the second display pixel at a second time, after the first time, while driving the second common electrode but not the first common electrode. In some examples, the circuitry can be configured to leave the second common electrode floating while driving the first common electrode, and leave the first common electrode floating while driving the second common electrode.

    Dynamic Image Stabilization Using Motion Sensors
    54.
    发明申请
    Dynamic Image Stabilization Using Motion Sensors 审中-公开

    公开(公告)号：US20190317659A1

    公开(公告)日：2019-10-17

    申请号：US16366503

    申请日：2019-03-27

    Applicant: Apple Inc.

    Inventor： Paul V. Johnson ,  Ahmad Rahmati ,  Chaohao Wang ,  Cheng Chen ,  Graham B. Myhre ,  Jiaying Wu ,  Paolo Sacchetto ,  Sheng Zhang ,  Yunhui Hou ,  Xiaokai Li ,  Tim H. Cornelissen

    IPC: G06F3/0484 ,  G06F3/01 ,  G06F3/0481

    Abstract: An electronic device may include a display for displaying image content to a user and dynamic image stabilization circuitry for dynamically compensating the image content if the device is moving unpredictably to help keep the image content aligned with the user's gaze. The electronic device may include sensors for detecting the displacement of the device. The dynamic image stabilization circuitry may include a usage scenario detection circuit and a content displacement compensation calculation circuit. The usage scenario detection circuit receives data from the sensors and infers a usage scenario based on the sensor data. The content displacement compensation calculation circuit uses the inferred usage scenario to compute a displacement amount by which to adjust image content. When motion stops, the image content may gradually drift back to the center of the display.

    Display pixel charge accumulation compensation systems and methods
    55.
    发明授权
    Display pixel charge accumulation compensation systems and methods 有权

    公开(公告)号：US10410587B2

    公开(公告)日：2019-09-10

    申请号：US15274035

    申请日：2016-09-23

    Applicant: APPLE INC.

    Inventor： Ilie Garbacea ,  Chaohao Wang ,  Chengrui Le

    IPC: G09G3/3291 ,  G09G3/36 ,  G09G3/3225

    Abstract: Systems and methods for improving displayed image quality of an electronic display including a display pixel that displays an image frame based at least in part on an analog electrical signal supplied to the display pixel are provided. In some embodiments, control circuitry instructs the electronic display to display the image frame based at least in part on an expected charge accumulation in the display pixel determined using a charge accumulation model that describes one or more electric fields expected to be present in the display pixel when displaying the image frame and that provides a display pixel state indicative of expected charge accumulation in the display pixel when the image frame is to be displayed based at least in part on the one or more electric fields.

    Content-based VCOM driving
    56.
    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.

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