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    Displays with supplemental loading structures
    31.
    发明授权
    Displays with supplemental loading structures 有权

    公开(公告)号：US11594190B2

    公开(公告)日：2023-02-28

    申请号：US17401117

    申请日：2021-08-12

    Applicant: Apple Inc.

    Inventor： Shin-Hung Yeh ,  Abbas Jamshidi Roudbar ,  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.

    Displays with gate driver circuitry having shared register circuits
    34.
    发明授权
    Displays with gate driver circuitry having shared register circuits 有权

    公开(公告)号：US10896642B1

    公开(公告)日：2021-01-19

    申请号：US16828052

    申请日：2020-03-24

    Applicant: Apple Inc.

    Inventor： Chuang Qian ,  Tsung-Ting Tsai ,  Shyuan Yang ,  Cheng-Chih Hsieh ,  Abbas Jamshidi Roudbari ,  Ting-Kuo Chang ,  Shih-Chang Chang

    IPC: G09G3/3233 ,  G09G3/3266 ,  G09G3/3275 ,  G11C19/28

    Abstract: Electronic devices may include displays having organic light-emitting diode pixels, display driver circuitry, and gate driver circuitry. To reduce the amount of space occupied in the inactive area of a display by the gate driver circuitry, one or more of the shift registers in the gate driver circuitry may include register circuits that are shared by multiple rows of pixels. Different drivers may use different clock frequencies to ensure synchronous operation of the display even when some register circuits share pixel rows. For increased flexibility in the arrangement of the register circuits in the shift registers, one or more of the shift registers may be split across the active area of the display. In some cases, one of the emission drivers may be omitted from the gate driver circuitry and a single emission driver may provide multiple emission control signals for the pixels.

    Control circuitry for electronic device displays
    35.
    发明授权
    Control circuitry for electronic device displays 有权

    公开(公告)号：US10438540B2

    公开(公告)日：2019-10-08

    申请号：US15701342

    申请日：2017-09-11

    Applicant: Apple Inc.

    Inventor： Shyuan Yang ,  Abbas Jamshidi Roudbari ,  Ting-Kuo Chang ,  Tsung-Ting Tsai ,  Warren S. Rieutort-Louis

    IPC: G09G3/3266 ,  G09G3/3225 ,  G09G3/20

    Abstract: Aspects of the subject technology relate to display circuitry. The display circuitry includes gate-in-panel (GIP) control circuitry on opposing sides of a display pixel array. The GIP control circuitry can include scan drivers for each pixel row on both sides of that pixel row, the scan drivers on either side configured for enablement or disablement for single-sided reduced-power operations. The GIP control circuitry can include a single scan driver and a single emission controller for each pixel row, in which the scan driver and emission controller for each row are disposed on opposing sides of the row. The scan drivers for a first subset of the pixel rows can be interleaved with the emission controllers for a different subset of the pixel rows.

    Display with integrated pressure sensing utilizing capacitive coupling to circuit elements
    36.
    发明授权
    Display with integrated pressure sensing utilizing capacitive coupling to circuit elements 有权

    公开(公告)号：US10402000B2

    公开(公告)日：2019-09-03

    申请号：US13784509

    申请日：2013-03-04

    Applicant: Apple Inc.

    Inventor： Abbas Jamshidi-Roudbari ,  Shih Chang Chang ,  Cheng-Ho Yu ,  Ting-Kuo Chang

    IPC: G06F3/044 ,  G06F3/041

    Abstract: A touch sensitive device that can detect the amount of pressure being applied to a touch screen from a user or other external object is provided. A spacer of the touch screen can be coated with a layer of conductive material and the change in capacitance between the spacer and various circuit elements of the touch screen can be measured. The change in capacitance can be correlated to the amount of pressure being applied to the touch screen, thus providing a method to determine the pressure being applied. During operation of the device, the system can time multiplex touch, display and pressure sensing operations so as to take advantage of an integrated touch and display architecture.

    Electronic Devices With Low Refresh Rate Display Pixels
    37.
    发明申请
    Electronic Devices With Low Refresh Rate Display Pixels 审中-公开

    公开(公告)号：US20190237010A1

    公开(公告)日：2019-08-01

    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: G09G3/3225 ,  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
    38.
    发明申请
    Display With Power Supply Mesh 审中-公开

    公开(公告)号：US20190189732A1

    公开(公告)日：2019-06-20

    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 ,  H01L51/52 ,  G09G3/3225

    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.

    Light-emitting diode display with reduced leakage
    40.
    发明授权
    Light-emitting diode display with reduced leakage 有权

    公开(公告)号：US10311782B2

    公开(公告)日：2019-06-04

    申请号：US15246345

    申请日：2016-08-24

    Applicant: Apple Inc.

    Inventor： Warren S. Rieutort-Louis ,  Keitaro Yamashita ,  Tsung-Ting Tsai ,  Yun Wang ,  Ting-Kuo Chang ,  Cheng-Ho Yu ,  Shinya Ono

    IPC: G09G3/3233 ,  G09G3/3266

    Abstract: An organic light-emitting diode display may contain an array of display pixels. Each display pixel may have a respective organic light-emitting diode that is controlled by a drive transistor. At low temperatures, it may be necessary to increase the amount of current through an organic light-emitting diode to achieve a desired luminance level. In order to increase the current through the light-emitting diode, the ground voltage level may be lowered. However, this may lead to thin-film transistors within the pixel leaking, which may result in undesirable display artifacts such as bright dots being displayed in a dark image. In order to prevent leakage in the transistors, the transistors may be coupled to separate reference voltage supplies or separate control lines. Additionally, the transistors may be positioned to minimize leakage even at low ground voltage levels.

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