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    Light sensing display
    85.
    发明授权
    Light sensing display 有权

    公开(公告)号：US11733807B2

    公开(公告)日：2023-08-22

    申请号：US15761603

    申请日：2016-07-18

    Applicant: Apple Inc.

    Inventor： Hung Sheng Lin ,  Chin-Wei Lin ,  Tsung-Ting Tsai

    IPC: G06F3/042 ,  G06F3/041 ,  G09G3/3233 ,  G09G3/36 ,  G09G3/3258

    CPC classification number: G06F3/0421 ,  G06F3/042 ,  G06F3/0412 ,  G09G3/3233 ,  G09G3/3258 ,  G09G3/3659 ,  G09G2310/0297 ,  G09G2320/0295 ,  G09G2360/148

    Abstract: A display may have an array of pixels. The pixels may contain light-emitting diodes. When it is desired to use the display to operate as a light sensor, some of the light-emitting diodes may be forward biased to emit light while some of the light-emitting diodes are reversed biased to detect the emitted light after the emitted light has reflected from an external object. During light sensing operations, one or more areas of the display may be temporarily deactivated so that the light-sensing pixels may measure the reflected light. Vertical lines may serve both as data loading lines and as current sensing lines. Currents may be sensed during drive transistor current compensation and during light sensing. The vertical lines may load signals into the pixels that forward bias the light-emitting diodes to emit light when it is desired to display images for a user.

    Displays with Reduced Temperature Luminance Sensitivity
    88.
    发明申请
    Displays with Reduced Temperature Luminance Sensitivity 有权

    公开(公告)号：US20230080809A1

    公开(公告)日：2023-03-16

    申请号：US17990510

    申请日：2022-11-18

    Applicant: Apple Inc.

    Inventor： Shinya Ono ,  Chin-Wei Lin ,  Zino Lee ,  Chun-Chieh Lin ,  Chen-Ming Chen

    IPC: G09G3/3291 ,  G09G3/3266

    Abstract: A display may include an array of pixels. Each pixel in the array includes an organic light-emitting diode coupled to a drive transistor, a data loading transistor, a first capacitor for storing data charge, and a second capacitor. During a data programming phase, the data loading transistor may be activated to load in a data value onto the first capacitor. After the data programming phase, the second capacitor may be configured to receive a lower voltage, which extends a threshold voltage sampling time for the pixel. Configured and operated in this way, the temperature luminance sensitivity of the display can be reduced.

    Display With Light-Emitting Diodes
    89.
    发明申请
    Display With Light-Emitting Diodes 有权

    公开(公告)号：US20220383817A1

    公开(公告)日：2022-12-01

    申请号：US17884297

    申请日：2022-08-09

    Applicant: Apple Inc.

    Inventor： Chin-Wei Lin ,  Hung Sheng Lin ,  Shih Chang Chang ,  Shinya Ono

    IPC: G09G3/3233 ,  H01L29/786 ,  G09G3/3266 ,  G09G3/3275 ,  H01L27/12

    Abstract: A display may have an array of pixels each of which has a light-emitting diode such as an organic light-emitting diode. A drive transistor and an emission transistor may be coupled in series with the light-emitting diode of each pixel between a positive power supply and a ground power supply. The pixels may include first and second switching transistors. A data storage capacitor may be coupled between a gate and source of the drive transistor in each pixel. Signal lines may be provided in columns of pixels to route signals such as data signals, sensed drive currents from the drive transistors, and predetermined voltages between display driver circuitry and the pixels. The switching transistors, emission transistors, and drive transistors may include semiconducting-oxide transistors and silicon transistors and may be n-channel transistors or p-channel transistors.

    Display gate drivers for generating low-frequency inverted pulses
    90.
    发明授权
    Display gate drivers for generating low-frequency inverted pulses 有权

    公开(公告)号：US11488538B1

    公开(公告)日：2022-11-01

    申请号：US17213041

    申请日：2021-03-25

    Applicant: Apple Inc.

    Inventor： Chin-Wei Lin ,  Shinya Ono ,  Gihoon Choo

    IPC: G09G3/3266

    Abstract: A display is provided that includes an array of display pixels that receive data signals from display driver circuitry and that receive control signals from gate driver circuitry. The gate driver circuitry may include a chain of row driver circuits. Each row driver circuit may include a scan driver circuit and a scan inverter circuit. An enable transistor may be interposed between the scan driver circuit and the scan inverter circuit and may be selectively disabled to decouple the scan inverter circuit from the scan driver circuit to allow the scan inverter circuit to operate independent from the scan driver circuit. The scan inverter circuit may include a transistor that receives a scan pulse signal from the scan driver circuit and may further include additional transistors connected in a negative feedback configuration to reduce a drain-to-source voltage across the transistor to reduce leakage across the transistor during blanking times.

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