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    Display with light-emitting diodes
    12.
    发明授权
    Display with light-emitting diodes 有权

    公开(公告)号：US10997917B2

    公开(公告)日：2021-05-04

    申请号：US16897129

    申请日：2020-06-09

    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 having vertically driven gate and data paths
    14.
    发明授权
    Display having vertically driven gate and data paths 有权

    公开(公告)号：US10950679B1

    公开(公告)日：2021-03-16

    申请号：US16108686

    申请日：2018-08-22

    Applicant: Apple Inc.

    Inventor： Jiayi Jin ,  Chin-Wei Lin ,  Shyuan Yang ,  Weijun Yao

    IPC: H01L27/32 ,  G09G3/3275 ,  G09G3/3225 ,  H01L27/12

    Abstract: A display may have an array of pixels arranged in rows and columns. The pixels may be organic light-emitting diode pixels that each include an organic light-emitting diode and thin-film transistor circuitry for controlling the diode or may be other suitable display pixels. The pixels may form an active area of the display that displays images. Display driver circuitry may be provided in an inactive border area of the display. The display may include vertical gate lines. The display may also include data lines. The data lines may include vertical data line portions and orthogonal horizontal data line portions coupled to the vertical data line portions with vias. During operation, data from the display driver circuitry may be provided to rows of the pixels using the data lines while the vertical gate lines supply control signals to columns of the pixels.

    Electronic devices with low refresh rate display pixels
    15.
    发明授权
    Electronic devices with low refresh rate display pixels 有权

    公开(公告)号：US10854139B2

    公开(公告)日：2020-12-01

    申请号：US16696578

    申请日：2019-11-26

    Applicant: Apple Inc.

    Inventor： Chin-Wei Lin ,  Shyuan Yang ,  Chuang Qian ,  Abbas Jamshidi Roudbari ,  Ting-Kuo Chang

    IPC: G09G3/32 ,  G09G3/3225 ,  G09G3/3233

    Abstract: A display may have an array of organic light-emitting diode display pixels operating at a low refresh rate. Each display pixel may have six thin-film transistors and one capacitor. One of the six transistors may serve as the drive transistor and may be compensated using the remaining five transistors and the capacitor. One or more on-bias stress operations may be applied before threshold voltage sampling to mitigate first frame dimming. Multiple anode reset and on-bias stress operations may be inserted during vertical blanking periods to reduce flicker and maintain balance and may also be inserted between successive data refreshes to improve first frame performance. Two different emission signals controlling each pixel may be toggled together using a pulse width modulation scheme to help provide darker black levels.

    SYSTEMS AND METHODS FOR PERFORMING IN-FRAME CLEANING
    16.
    发明申请
    SYSTEMS AND METHODS FOR PERFORMING IN-FRAME CLEANING 审中-公开

    公开(公告)号：US20200302856A1

    公开(公告)日：2020-09-24

    申请号：US16746325

    申请日：2020-01-17

    Applicant: Apple Inc.

    Inventor： Xin Lin ,  Yun Wang ,  Chin-Wei Lin ,  Majid Gharghi ,  Fan Gui ,  Chen-Ming Chen ,  Jie Won Ryu ,  Hyunwoo Nho ,  Alex H. Pai ,  Kingsuk Brahma ,  Junhua Tan ,  Szu Heng Tseng

    IPC: G09G3/32 ,  G09G3/20

    Abstract: A system includes an electronic display panel that has a plurality of pixels configured to depict frames of image data. The electronic display also includes display driver circuitry configured to, for a first frame of image data representing first image content, modify a gate-to-source voltage of a transistor of a first pixel of the plurality of pixels to a content-dependent first gate-to-source voltage. Additionally, after modifying the gate-to-source voltage to the first gate-to-source voltage, the display driver circuitry is configured to program the first pixel by modifying the gate-to-source voltage to a gate-to-source programming voltage that differs from the first gate-to-source voltage and is based on image data associated with the pixel from the first frame of the image data. Furthermore, the display driver circuitry is configured to cause the plurality of pixels to emit light.

    Electronic Display with Hybrid In-Pixel and External Compensation
    17.
    发明申请
    Electronic Display with Hybrid In-Pixel and External Compensation 审中-公开

    公开(公告)号：US20200226978A1

    公开(公告)日：2020-07-16

    申请号：US16716911

    申请日：2019-12-17

    Applicant: Apple Inc.

    Inventor： Chin-Wei Lin ,  Shinya Ono ,  Zino Lee ,  Yun Wang ,  Fan Gui

    IPC: G09G3/3258 ,  H01L27/32 ,  H01L29/786

    Abstract: A display pixel is provided that is operable to support hybrid compensation scheme having both in-pixel threshold voltage canceling and external threshold voltage compensation. The display may include multiple p-type silicon transistors with at least one n-type semiconducting-oxide transistor and one storage capacitor. An on-bias stress phase may be performed prior to a threshold voltage sampling and data programming phase to mitigate hysteresis and improve first frame response. In low refresh rate displays, a first additional on-bias stress operation can be performed separate from the threshold voltage sampling and data programming phase during a refresh frame and a second additional on-bias stress operation can be performed during a vertical blanking frame. The display pixel may be configured to receive an initialization voltage and an anode reset voltage, either of which can be dynamically tuned to match the stress of the first and second additional on-bias stress operations to minimize flicker.

    Light-Emitting Diode Displays
    18.
    发明申请
    Light-Emitting Diode Displays 审中-公开

    公开(公告)号：US20200219945A1

    公开(公告)日：2020-07-09

    申请号：US16826521

    申请日：2020-03-23

    Applicant: Apple Inc.

    Inventor： Cheng-Ho Yu ,  Chin-Wei Lin ,  Shyuan Yang ,  Ting-Kuo Chang ,  Tsung-Ting Tsai ,  Warren S. Rieutort-Louis ,  Shih-Chang Chang ,  Yu Cheng Chen ,  John Z. Zhong

    IPC: H01L27/32 ,  G09G3/3233 ,  G09G3/3266 ,  G06F3/044

    Abstract: A display may have an array of pixels. Display driver circuitry may supply data and control signals to the pixels. Each pixel may have seven transistors, a capacitor, and a light-emitting diode such as an organic light-emitting diode. The seven transistors may receive control signals using horizontal control lines. Each pixel may have first and second emission enable transistors that are coupled in series with a drive transistor and the light-emitting diode of that pixel. The first and second emission enable transistors may be coupled to a common control line or may be separately controlled so that on-bias stress can be effectively applied to the drive transistor. The display driver circuitry may have gate driver circuits that provide different gate line signals to different rows of pixels within the display. Different rows may also have different gate driver strengths and different supplemental gate line loading structures.

    Display With Light-Emitting Diodes
    20.
    发明申请
    Display With Light-Emitting Diodes 审中-公开

    公开(公告)号：US20200074926A1

    公开(公告)日：2020-03-05

    申请号：US16678148

    申请日：2019-11-08

    Applicant: Apple Inc.

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

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

    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.

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