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    Electronic Devices With Low Refresh Rate Display Pixels
    122.
    发明申请
    Electronic Devices With Low Refresh Rate Display Pixels 有权

    公开(公告)号：US20220139315A1

    公开(公告)日：2022-05-05

    申请号：US17576619

    申请日：2022-01-14

    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.

    High Frame Rate Display
    125.
    发明申请
    High Frame Rate Display 有权

    公开(公告)号：US20210210022A1

    公开(公告)日：2021-07-08

    申请号：US17206425

    申请日：2021-03-19

    Applicant: Apple Inc.

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

    IPC: G09G3/3275 ,  G09G3/3233 ,  G09G3/3266

    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
    126.
    发明申请
    Electronic Devices With Low Refresh Rate Display Pixels 有权

    公开(公告)号：US20210043138A1

    公开(公告)日：2021-02-11

    申请号：US17080685

    申请日：2020-10-26

    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 power supply mesh
    127.
    发明授权
    Display with power supply mesh 有权

    公开(公告)号：US10700151B2

    公开(公告)日：2020-06-30

    申请号：US16240552

    申请日：2019-01-04

    Applicant: Apple Inc.

    Inventor： Warren S. Rieutort-Louis ,  Ting-Kuo Chang ,  Chieh-Wei Chen ,  Cheng-Ho Yu

    IPC: H01L27/32 ,  G09G3/3225 ,  H01L51/52

    Abstract: An organic light-emitting diode display may have an array of pixels. The pixels may each have an organic light-emitting diode with a respective anode and may be formed from thin-film transistor circuitry formed on a substrate. A mesh-shaped path may be used to distribute a power supply voltage to the thin-film circuitry. The mesh-shaped path may have intersecting horizontally extending lines and vertically extending lines. The horizontally extending lines may be zigzag metal lines that do not overlap the anodes. The vertically extending lines may be straight vertical metal lines that overlap the anodes. The pixels may include pixels of different colors. Angularly dependent shifts in display color may be minimized by ensuring that the anodes of the differently colored pixels overlap the vertically extending lines by similar amounts.

    Displays with supplemental loading structures
    129.
    发明授权
    Displays with supplemental loading structures 有权

    公开(公告)号：US10360862B2

    公开(公告)日：2019-07-23

    申请号：US15980437

    申请日：2018-05-15

    Applicant: Apple Inc.

    Inventor： Shin-Hung Yeh ,  Abbas Jamshidi Roudbari ,  Ting-Kuo Chang

    IPC: G09G3/36 ,  G02F1/1362 ,  G09G3/00 ,  H01L27/12

    Abstract: A display may have an array of pixels such as liquid crystal display pixels. The display may include short pixel rows that span only partially across the display and full-width pixel rows that span the width of the display. The gate lines coupled to the short pixel rows may extend into the inactive area of the display. Supplemental gate line loading structures may be located in the inactive area of the display to increase loading on the gate lines that are coupled to short pixel rows. The supplemental gate line loading structures may include data lines and doped polysilicon that overlap the gate lines in the inactive area. In displays that combine display and touch functionality into a thin-film transistor layer, supplemental loading structures may be used in the inactive area to increase loading on common voltage lines that are coupled to short rows of common voltage pads.

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