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    Displays With Silicon and Semiconducting Oxide Thin-Film Transistors
    32.
    发明申请
    Displays With Silicon and Semiconducting Oxide Thin-Film Transistors 有权

    公开(公告)号：US20220037374A1

    公开(公告)日：2022-02-03

    申请号：US17502909

    申请日：2021-10-15

    Applicant: Apple Inc.

    Inventor： Vasudha Gupta ,  Jae Won Choi ,  Shih Chang Chang ,  Tsung-Ting Tsai ,  Young Bae Park

    IPC: H01L27/12 ,  G02F1/1362 ,  G02F1/1368 ,  H01L27/32

    Abstract: An electronic device may include a display having an array of display pixels on a substrate. The display pixels may be organic light-emitting diode display pixels or display pixels in a liquid crystal display. In an organic light-emitting diode display, hybrid thin-film transistor structures may be formed that include semiconducting oxide thin-film transistors, silicon thin-film transistors, and capacitor structures. The capacitor structures may overlap the semiconducting oxide thin-film transistors. Organic light-emitting diode display pixels may have combinations of oxide and silicon transistors. In a liquid crystal display, display driver circuitry may include silicon thin-film transistor circuitry and display pixels may be based on oxide thin-film transistors. A single layer or two different layers of gate metal may be used in forming silicon transistor gates and oxide transistor gates. A silicon transistor may have a gate that overlaps a floating gate structure.

    Reducing Border Width Around a Hole in Display Active Area
    33.
    发明申请
    Reducing Border Width Around a Hole in Display Active Area 有权

    公开(公告)号：US20210305350A1

    公开(公告)日：2021-09-30

    申请号：US17145815

    申请日：2021-01-11

    Applicant: Apple Inc.

    Inventor： Warren S. Rieutort-Louis ,  Abbas Jamshidi Roudbari ,  Yuchi Che ,  Tsung-Ting Tsai ,  Jiun-Jye Chang ,  Shih Chang Chang ,  Ting-Kuo Chang

    IPC: H01L27/32 ,  G06F3/041 ,  G09G3/3225

    Abstract: An electronic device may include a display having display pixels formed in an active area of the display. The display further includes display driver circuitry for driving gate lines that are routed across the display. A hole such as a through hole, optical window, or other inactive region may be formed within the active area of the display. Multiple gate lines carrying the same signal may be merged together prior to being routed around the hole to help minimize the routing line congestion around the border of the hole. Dummy circuits may be coupled to the merged segment portion to help increase the parasitic loading on the merged segments. The hole may have a tapered shape to help maximize the size of the active area. The hole may have an asymmetric shape to accommodate multiple sub-display sensor components.

    Displays with Gate Driver Circuitry Having Shared Register Circuits
    34.
    发明申请
    Displays with Gate Driver Circuitry Having Shared Register Circuits 有权

    公开(公告)号：US20210035499A1

    公开(公告)日：2021-02-04

    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 ,  G11C19/28 ,  G09G3/3275

    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.

    Displays with multiple scanning modes
    35.
    发明授权
    Displays with multiple scanning modes 有权

    公开(公告)号：US10546540B1

    公开(公告)日：2020-01-28

    申请号：US16577597

    申请日：2019-09-20

    Applicant: Apple Inc.

    Inventor： Keitaro Yamashita ,  Abbas Jamshidi Roudbari ,  Shin-Hung Yeh ,  Tsung-Ting Tsai ,  Shih-Chang Chang ,  Ting-Kuo Chang ,  Ki Yeol Byun ,  Warren S. Rieutort-Louis

    IPC: G09G3/3266

    Abstract: An electronic device may include a display such as a light-emitting diode display. The electronic device may be a head-mounted device that provides a virtual reality or augmented reality environment to a user. To reduce artifacts in the display, a display may be operable in both a normal scanning mode and a partial scanning mode. In the normal scanning mode, every row of the display may be enabled to emit light in each frame. In the partial scanning mode, only a subset of the rows of the display may be enabled to emit light in each frame. The display may have a higher refresh rate in the partial scanning mode than in the normal scanning mode. To ensure uniform transistor stress across the display, the scanning driver for the display may scan the disabled rows in the partial scanning mode even though the rows will not be used to emit light.

    Light-Emitting Diode Displays
    38.
    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.

    Sensing for compensation of pixel voltages
    39.
    发明授权
    Sensing for compensation of pixel voltages 有权

    公开(公告)号：US10186200B2

    公开(公告)日：2019-01-22

    申请号：US15271115

    申请日：2016-09-20

    Applicant: Apple Inc.

    Inventor： Chin-Wei Lin ,  Tsung-Ting Tsai ,  Vasudha Gupta

    IPC: G09G3/3258 ,  G09G3/3266 ,  G09G3/3291

    Abstract: A display device may include rows of pixels that displays image data on a display. The display device also includes a circuit that performs a progressive scan across the rows of pixels to display the image data using a plurality of pixels. The circuit may then supply test data to at least one pixel of a plurality of pixels that corresponds to a first row of the rows of pixels during the progressive scan, determine one or more sensitivity properties associated with the at least one pixel based on the performance of the at least one pixel when the test data is provided to the at least one pixel, and resume the progressive scan at the at least one pixel to display the image data for the at least one pixel and a remaining portion of the plurality of pixels in the first row and remaining rows of pixels.

    Organic light-emitting diode display with pulse-width-modulated brightness control
    40.
    发明授权
    Organic light-emitting diode display with pulse-width-modulated brightness control 有权

    公开(公告)号：US10186187B2

    公开(公告)日：2019-01-22

    申请号：US14687081

    申请日：2015-04-15

    Applicant: Apple Inc.

    Inventor： Tsung-Ting Tsai ,  Chin-Wei Lin ,  Shih Chang Chang

    IPC: G09G3/20 ,  G09G3/32 ,  G09G3/3266 ,  G09G3/3258 ,  G09G3/3233

    Abstract: A display may have an array of pixels arranged in rows and columns. Display driver circuitry may load data into the pixels via data lines that extend along the columns. The display driver circuitry may include gate driver circuitry that supplies horizontal control signals to rows of the pixels. The horizontal control signals may include emission enable signals for controlling emission enable transistors and scan signals for controlling switching transistors. During an emission phase of operation for the display, the emission enable signal may be pulse-width modulated by the emission control gate driver circuits in the gate driver circuitry to control the output of the light-emitting diodes. The emission control gate driver circuits may be controlled using an emission start signal and a pair of two-phase clocks.

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