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    Display With Pixel Dimming For Curved Edges
    11.
    发明申请
    Display With Pixel Dimming For Curved Edges 审中-公开

    公开(公告)号：US20190221177A1

    公开(公告)日：2019-07-18

    申请号：US16368394

    申请日：2019-03-28

    Applicant: Apple Inc.

    Inventor： Jiayi Jin ,  Myung-Je Cho ,  Paolo Sacchetto ,  Weijun Yao

    IPC: G09G3/36 ,  G09G3/20

    CPC classification number: G09G3/3607 ,  G09G3/20 ,  G09G2310/0232 ,  G09G2320/0285 ,  G09G2320/0626

    Abstract: A display may have curved edges such as rounded corners. Pixels in the display may be controlled so that the active area of the display has the desired curved edge shape. In order to maximize the apparent smoothness of the curved edge, the display may include circuitry that dims some of the pixels based on their location relative to a spline for the curved edge. The display circuitry may include a multiplication circuit that receives image data as a first input and dimming factors from a gain table as a second input. The image data may include a brightness level for each pixel in the array of pixels. The multiplication circuit may multiply the brightness level for each pixel by its respective dimming factor. This modified image data may then be supplied to the imaging pixels using display driver circuitry.

    COLLISION AVOIDANCE SCHEMES FOR DISPLAYS
    12.
    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.

    PIXEL CHARGING AND DISCHARGING RATE CONTROL SYSTEMS AND METHODS
    13.
    发明申请
    PIXEL CHARGING AND DISCHARGING RATE CONTROL SYSTEMS AND METHODS 审中-公开
    像素充电和放电率控制系统和方法

    公开(公告)号：US20170024043A1

    公开(公告)日：2017-01-26

    申请号：US14808882

    申请日：2015-07-24

    Applicant: APPLE INC.

    Inventor： Kasra Omid-Zohoor ,  Jie Won Ryu ,  Jiayi Jin ,  Hyunwoo Nho

    IPC: G06F3/041 ,  G09G3/36 ,  G02F1/1333 ,  G06F3/044

    CPC classification number: G06F3/0412 ,  G06F3/044 ,  G06F2203/04103 ,  G09G3/3648 ,  G09G2300/0426 ,  G09G2300/0809 ,  G09G2310/0251

    Abstract: Systems and methods for improving display image quality on electronic displays are provided. One embodiment of an electronic display includes display pixels that share a common electrode. Each of the display pixels includes a first conductive path electrically coupled between a pixel electrode and a data line, in which the first conductive path only enables the data line to charge the pixel electrode; and a second conductive path electrically coupled between the pixel electrode and the data line in parallel with the first conductive path, in which the second conductive path enables the data line to discharge the pixel electrode such that discharge rate of the pixel electrode is approximately equal to charge rate of the pixel electrode. Additionally, the embodiment includes a touch pixel that detects occurrence and position of a touch on a screen of the electronic display using the first common electrode.

    Abstract translation: 提供了用于提高电子显示器上的显示图像质量的系统和方法。 电子显示器的一个实施例包括共享公共电极的显示像素。 每个显示像素包括电耦合在像素电极和数据线之间的第一导电路径，其中第一导电路径仅使得数据线能够对像素电极充电; 以及第二导电路径，与第一导电路径平行地耦合在像素电极和数据线之间，其中第二导电路径使得数据线能够使像素电极放电，使得像素电极的放电速率近似等于 像素电极的充电速率。 此外，该实施例包括使用第一公共电极检测在电子显示器的屏幕上的触摸的发生和位置的触摸像素。

    Electronic devices having displays with compensation for oxide transistor threshold voltage
    19.
    发明授权
    Electronic devices having displays with compensation for oxide transistor threshold voltage 有权

    公开(公告)号：US11081053B2

    公开(公告)日：2021-08-03

    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 ,  H01L29/786

    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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