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    Electronic devices with low refresh rate display pixels
    102.
    发明授权
    Electronic devices with low refresh rate display pixels 有权

    公开(公告)号：US10741121B2

    公开(公告)日：2020-08-11

    申请号：US16379323

    申请日：2019-04-09

    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.

    Electronic Devices With Low Refresh Rate Display Pixels
    103.
    发明申请
    Electronic Devices With Low Refresh Rate Display Pixels 审中-公开

    公开(公告)号：US20200098314A1

    公开(公告)日：2020-03-26

    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: G09G3/3225 ,  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.

    Display with light transmitting windows
    105.
    发明授权
    Display with light transmitting windows 有权

    公开(公告)号：US10381381B1

    公开(公告)日：2019-08-13

    申请号：US15274546

    申请日：2016-09-23

    Applicant: Apple Inc.

    Inventor： Minhyuk Choi ,  Bhadrinarayana Lalgudi Visweswaran ,  Cheng Chen ,  Chin-Wei Lin ,  Meng-Huan Ho ,  Rui Liu ,  Shih Chang Chang ,  Soojin Park ,  Sarfaraz Moh ,  Jungmin Lee ,  John Z. Zhong

    IPC: H01L27/12 ,  H01L31/12

    Abstract: A display may have an array of pixels with light-emitting diodes that emit light to form images. The display may have a substrate with thin-film transistor circuitry for supplying signals to the light-emitting diodes. Anodes may be formed on the thin-film transistor circuitry, emissive material may be formed on the anodes, and a cathode layer may overlap the anodes. During operation, currents may flow between the anodes and the cathode layer to illuminate the diodes. An array of electrical components such as an array of light sensors in an integrated circuit may be mounted under the substrate. An array of corresponding light transmitting windows may be formed in the display each of which may allow light to pass through the display to a corresponding one of the light sensors. Light transmitting windows may be formed by patterning the cathode layer and supplying the windows with antireflection layers.

    High Frame Rate Display
    106.
    发明申请
    High Frame Rate Display 审中-公开

    公开(公告)号：US20190228726A1

    公开(公告)日：2019-07-25

    申请号：US16369319

    申请日：2019-03-29

    Applicant: Apple Inc.

    Inventor： Shinya Ono ,  Zino Lee ,  Gihoon Choo ,  Hassan Edrees ,  Chin-Wei Lin

    IPC: G09G3/36 ,  G09G3/3225

    Abstract: 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 devices with low refresh rate display pixels
    108.
    发明授权
    Electronic devices with low refresh rate display pixels 有权

    公开(公告)号：US10304378B2

    公开(公告)日：2019-05-28

    申请号：US15996366

    申请日：2018-06-01

    Applicant: Apple Inc.

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

    IPC: G09G3/32 ,  G09G3/3225

    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.

    Light-Emitting Diode Displays
    109.
    发明申请
    Light-Emitting Diode Displays 审中-公开

    公开(公告)号：US20190148465A1

    公开(公告)日：2019-05-16

    申请号：US16224607

    申请日：2018-12-18

    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 ,  G09G3/3266 ,  G06F3/044 ,  G09G3/3233

    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.

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