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    RADIO FREQUENCY SIGNAL EMISSION INDUCED DISPLAY ARTIFACT MITIGATION SYSTEMS AND METHODS
    1.
    发明申请
    RADIO FREQUENCY SIGNAL EMISSION INDUCED DISPLAY ARTIFACT MITIGATION SYSTEMS AND METHODS 审中-公开

    公开(公告)号：US20190311680A1

    公开(公告)日：2019-10-10

    申请号：US16048217

    申请日：2018-07-27

    Applicant: Apple Inc.

    Inventor： Kyung Hoae Koo ,  Weijun Yao ,  Yue Jack Chu ,  Kaige Sun

    IPC: G09G3/3266

    Abstract: Display artifacts, such as muras, may be perceptible on an electronic display when an electronic device includes a radio frequency transceiver that outputs electromagnetic waves during an emission period and a display panel that writes to display pixels during a refresh period. The electronic device may also include a controller that is coupled to the radio frequency transceiver and the display panel and facilitates the reduction and/or elimination of overlap between the emission periods and the refresh periods to decrease the appearance of display artifacts. In particular, the controller may execute instructions to determine the duration of the emission period and determine the duration of the blanking period that occurs between the refresh periods. Further, based on the determined blanking period and emission period durations, the controller may instruct the radio frequency transceiver to adjust the timing of the first emission period, instruct the display panel to adjust the timing of the refresh rate, or both to reduce overlap.

    COLLISION AVOIDANCE SCHEMES FOR DISPLAYS
    2.
    发明申请
    COLLISION AVOIDANCE SCHEMES FOR DISPLAYS 审中-公开

    公开(公告)号：US20190027114A1

    公开(公告)日：2019-01-24

    申请号：US15716708

    申请日：2017-09-27

    Applicant: Apple Inc.

    Inventor： Yue Jack Chu ,  Christopher P. Tann ,  Arthur L. Spence ,  Brad W. Simeral ,  Yafei Bi ,  Jiayi Jin ,  Ruo-Gu Huang ,  Haifeng Li ,  Weijun Yao ,  Chaohao Wang

    IPC: G09G5/00 ,  G06T1/60 ,  G09G5/36

    Abstract: In situations with reduced image changes, display panels, such as the ones disclosed herein, may reduce their power consumption by performing self-refresh cycles, in which they may display locally stored data in the display panel instead of retrieving it from an image buffer. Methods and circuitry for management of the self-refresh cycle may reduce jitter, luminance errors, and/or flickers that may be caused by untimely self-refresh cycles that may occur as a result of latency in the image buffer. In some implementations, the display panel may have a dedicated low latency input that notifies an arrival of an incoming image. In some implementations, the self-refresh cycles of the panel may be managed by a host or a buffer that is responsible for sending the images.

    ELECTRONIC DISPLAY ADAPTIVE TOUCH INTERFERENCE SCHEME SYSTEMS AND METHODS
    6.
    发明申请
    ELECTRONIC DISPLAY ADAPTIVE TOUCH INTERFERENCE SCHEME SYSTEMS AND METHODS 审中-公开

    公开(公告)号：US20200004378A1

    公开(公告)日：2020-01-02

    申请号：US16436756

    申请日：2019-06-10

    Applicant: Apple Inc.

    Inventor： Anshi Liang ,  He Yi ,  Yang Xu ,  Paolo Sacchetto ,  Jun Li ,  Jingyu Huang ,  Marc Joseph DeVincentis ,  Yue Jack Chu

    IPC: G06F3/041 ,  G06F3/044 ,  G06F3/046

    Abstract: Display-to-touch noise may be perceptible when a touch image generated during an active period of an electronic display of an electronic device is used to determine a touch indication on the display. The electronic device may include a display pixel layer including a plurality of display pixels that write display images to the display during a display active period and continue displaying the display image during a display blanking period. The electronic device may also include a touch sense layer including a plurality of touch sense pixels that facilitate generation of a first touch image during a first display active period and generation of a second touch image during a first display blanking period. The electronic device may further include a controller coupled to the display pixel layer and the touch sense layer that facilitates the reduction or elimination of display-to-touch interference. In particular, the controller may determine a first noise metric associated with touch images generated during the first display active period and a second noise metric associated with touch images generated during the first display blanking period. Further, the controller may instruct the touch sense layer to not generate touch images during a second display active period in response to the first noise metric being greater than a noise threshold and the second noise metric not being greater than the noise threshold.

    EMISSION PROFILE TRACKING FOR ELECTRONIC DISPLAYS
    9.
    发明公开
    EMISSION PROFILE TRACKING FOR ELECTRONIC DISPLAYS 审中-公开

    公开(公告)号：US20230197020A1

    公开(公告)日：2023-06-22

    申请号：US17988721

    申请日：2022-11-16

    Applicant: Apple Inc.

    Inventor： Shengkui Gao ,  Jie Won Ryu ,  Kingsuk Brahma ,  Marc J DeVincentis ,  Mohammad Ali Jangda ,  Paolo Sacchetto ,  Weijun Yao ,  Yafei Bi ,  Yang Xu ,  Yue Jack Chu ,  Zhe Hua

    IPC: G09G3/34 ,  G09G3/36

    CPC classification number: G09G3/3426 ,  G09G3/3611 ,  G09G2330/021 ,  G09G2360/16

    Abstract: This disclosure provide various techniques for tracking emission profiles on an electronic display. An emission profile may be applied to the electronic display in order to illuminate certain pixels and deactivate (e.g., turn off) certain pixels in the electronic display to facilitate refreshing (e.g., programming with new image data) the deactivated pixels. A real-time row-based average pixel level or average pixel luminance calculation architecture may track the one or more EM profiles to accurately model EM profile behavior, which may enable accurate calculation of the average pixel level or average pixel luminance of the electronic display at any one point in time. The accurate average pixel level or average pixel luminance calculations effectuated by the EM profile tracking may be used to reduce the IR drop, improve real-time peak-luminance control, and improve the performance of under-display sensors, among other advantages.

    Electronic Devices Having Displays With Compensation for Oxide Transistor Threshold Voltage
    10.
    发明申请
    Electronic Devices Having Displays With Compensation for Oxide Transistor Threshold Voltage 审中-公开

    公开(公告)号：US20200243012A1

    公开(公告)日：2020-07-30

    申请号：US16283481

    申请日：2019-02-22

    Applicant: Apple Inc.

    Inventor： Jiayi Jin ,  David A. Doyle ,  Kyung Hoae Koo ,  Maofeng Yang ,  Michael H. Lim ,  Paolo Sacchetto ,  Timothy M. Johnson ,  Venkatesh Rajendran ,  Weijun Yao ,  Yue Jack Chu

    IPC: G09G3/3258 ,  G09G3/3266

    Abstract: A display may have an array of organic light-emitting diode display pixels. Each display pixel may include a drive transistor coupled in series with one or more emission transistors and a respective organic light-emitting diode (OLED). A semiconducting-oxide transistor may be coupled between a drain terminal and a gate terminal of the drive transistor to help reduce leakage during low-refresh-rate display operations. To compensate for variations in the threshold voltage of the semiconducting-oxide transistor, the magnitude of a high voltage level of a scan control signal provided to the gate terminal of the semiconducting-oxide transistor may be adjusted. Sensing circuitry may be used to sense a display current while displaying a calibration image. The sensed display current may be compared to an expected display current associated with the calibration image. Processing circuitry may update the high voltage level based on the actual display current compared to the expected display current.

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