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    Displays with reduced temperature luminance sensitivity
    1.
    发明授权
    Displays with reduced temperature luminance sensitivity 有权

    公开(公告)号：US11508309B2

    公开(公告)日：2022-11-22

    申请号：US17317128

    申请日：2021-05-11

    申请人： Apple Inc.

    发明人： Chin-Wei Lin ,  Shinya Ono ,  Zino Lee

    IPC分类号： G09G3/3266

    摘要： A display may include an array of pixels. Each pixel in the array may include a drive transistor, emission transistors, a data loading transistor, a gate voltage setting transistor, an initialization transistor, an anode reset transistor, a storage capacitor, and an optional current boosting capacitor. A data refresh may include a initialization phase, a threshold voltage sampling phase, and a data programming phase. The threshold voltage sampling phase can be substantially longer than the data programming phase to decrease a current sampling level during the threshold voltage sampling phase, which helps reduce the display luminance sensitivity to temperature variations.

    Methods and apparatus for accelerating scan signal fall time to reduce display border width
    2.
    发明授权
    Methods and apparatus for accelerating scan signal fall time to reduce display border width 有权

    公开(公告)号：US11348533B1

    公开(公告)日：2022-05-31

    申请号：US16864241

    申请日：2020-05-01

    申请人： Apple Inc.

    发明人： Shinya Ono ,  Chin-Wei Lin ,  Gihoon Choo ,  Shiping Shen ,  Jie Won Ryu ,  Zino Lee ,  Hassan Edrees ,  Ting-Kuo Chang

    IPC分类号： G09G3/3266

    摘要： A display may include an array of pixels, where each pixel in the array includes an organic light-emitting diode coupled to associated thin-film transistors. The thin-film transistors may be controlled using at least first and second horizontal scan line signals. Loading different data values into any given row in the array may cause the scan line signals to exhibit varying rise/fall times, which results in horizontal crosstalk and luminance non-uniformity across the display. The rise and fall times of the second scan line signal are crucial, so the second scan line signal is driven by two separate scan line drivers formed on both sides of the display. Only the fall time of the first scan line signal is crucial, so the first scan line signal is driven by only one peripheral scan line driver and is coupled to an auxiliary pull-down circuit that is only activated during the pull-down transition.

    Display with light-emitting diodes
    5.
    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

    申请人： Apple Inc.

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

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

    摘要： 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.

    High frame rate display
    6.
    发明授权
    High frame rate display 有权

    公开(公告)号：US10984727B2

    公开(公告)日：2021-04-20

    申请号：US16120076

    申请日：2018-08-31

    申请人： Apple Inc.

    发明人： Ting-Kuo Chang ,  Abbas Jamshidi Roudbari ,  Tsung-Ting Tsai ,  Warren S. Rieutort-Louis ,  Shinya Ono ,  Shin-Hung Yeh ,  Chien-Ya Lee ,  Shyuan Yang

    IPC分类号： G09G3/3275 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/20

    摘要： A display may have rows and columns of pixels. Gate lines may be used to supply gate signals to rows of the pixels. Data lines may be used to supply data signals to columns of the pixels. The data lines may include alternating even and odd data lines. Data lines may be organized in pairs each of which includes one of the odd data lines and an adjacent one of the even data lines. Demultiplexer circuitry may be configured dynamically during data loading and pixel sensing operations. During data loading, data from display driver circuitry may be supplied, alternately to odd pairs of the data lines and even pairs of the data lines. During sensing, the demultiplexer circuitry may couple a pair of the even data lines to sensing circuitry in the display driver circuitry and then may couple a pair of the odd data lines to the sensing circuitry.

    Electronic Display with Hybrid In-Pixel and External Compensation
    8.
    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

    申请人： Apple Inc.

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

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

    摘要： 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.

    Display With Light-Emitting Diodes
    10.
    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

    申请人： Apple Inc.

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

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

    摘要： 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.