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    Touch sensing utilizing integrated micro circuitry
    12.
    发明授权
    Touch sensing utilizing integrated micro circuitry 有权

    公开(公告)号：US11073927B2

    公开(公告)日：2021-07-27

    申请号：US16517513

    申请日：2019-07-19

    Applicant: Apple Inc.

    Inventor： Christian M. Sauer ,  Christoph H. Krah ,  Derek K. Shaeffer ,  Hasan Akyol ,  Henry C. Jen ,  Hopil Bae ,  John T. Wetherell ,  Thierry S. Divel ,  Xiang Lu

    IPC: G06F3/041 ,  G06F3/044 ,  G09G3/32 ,  H01L27/15

    Abstract: An integrated touchscreen can include light emitting diodes or organic light emitting diodes (LEDs/OLEDs), display chiplets and touch chiplets disposed in a visible area of the integrated touch screen. For example, the LEDs/OLEDs, display chiplets and touch chiplets can be placed on a substrate by a micro-transfer tool. The integrated touchscreen can also include electrodes disposed in the visible area of the integrated touch screen. The electrodes can be capable of providing display functionality via the one or more display chiplets during display operation (e.g., operating as cathode terminals of the LEDs during the display operation) and capable of providing touch functionality via the touch chiplets during touch operation (e.g., touch node electrodes can be formed from groups of the electrodes and sensed). In some examples, the touch node electrodes can be formed and coupled to touch chiplets via the display chiplets.

    Shared Components in Pulsed Electronic Displays
    13.
    发明申请
    Shared Components in Pulsed Electronic Displays 有权

    公开(公告)号：US20250095605A1

    公开(公告)日：2025-03-20

    申请号：US18625158

    申请日：2024-04-02

    Applicant: Apple Inc.

    Inventor： Baris Posat ,  John T. Wetherell ,  Hasan Akyol ,  Mahdi Farrokh Baroughi ,  Hopil Bae

    IPC: G09G5/00

    Abstract: Electronic displays may display a frame of image content by controlling emissions of display pixels. To this end, the electronic display may include one or more column drivers that drive the display pixels to emit light. The column drivers may be collectively compensated by common components, such as a single sampling capacitor and/or an analog buffer, which may reduce a size of the column drivers. In another example, the column drivers may include cascode transistors with increased width-to-length ratio and share a common n-well. Each transistor may be compensated by a respective capacitor, however a size of each sampling capacitor may be reduced, thereby reducing a size of the column driver. Moreover, a size of a level shifter may be reduced by operating transistors of the level shifter with sub-threshold voltage. Furthermore, a resolution of the electronic display may be improved by extending a pulse of an emission clock signal.

    Foveated driving for power saving
    15.
    发明授权
    Foveated driving for power saving 有权

    公开(公告)号：US11705037B1

    公开(公告)日：2023-07-18

    申请号：US17408133

    申请日：2021-08-20

    Applicant: Apple Inc.

    Inventor： Omar Hafiz ,  Baris Cagdaser ,  John T. Wetherell ,  Han Zhao

    IPC: G09G3/20

    CPC classification number: G09G3/20 ,  G09G2320/0233 ,  G09G2320/0626 ,  G09G2330/021

    Abstract: In an embodiment, an electronic display includes an active area including a plurality of pixels arranged in columns and a plurality of source drivers driving image data to columns of pixels. The electronic display also includes a first plurality of switches selectively coupling respective source drivers of the plurality of source drivers to one or more columns. Selective coupling enables the respective source drivers to, at different times, drive the image data to: a single column; and multiple columns. In another embodiment, an electronic display includes a display panel configured to operate using a reference voltage received via a resistive path having a routing resistance, a reference voltage source outputting the reference voltage, and a feedback circuit sensing an electrical parameter of the resistive path and producing a compensation voltage that, when added to the reference voltage, causes the reference voltage to remain substantially constant at the display panel.

    ENHANCED SMOOTHNESS DIGITAL-TO-ANALOG CONVERTER INTERPOLATION SYSTEMS AND METHODS
    17.
    发明申请
    ENHANCED SMOOTHNESS DIGITAL-TO-ANALOG CONVERTER INTERPOLATION SYSTEMS AND METHODS 有权

    公开(公告)号：US20220101772A1

    公开(公告)日：2022-03-31

    申请号：US17376131

    申请日：2021-07-14

    Applicant: Apple Inc.

    Inventor： John T. Wetherell ,  Mahdi Farrokh Baroughi ,  Jaeyoung Kang ,  Shingo Hatanaka ,  Hasan Akyol ,  Hopil Bae

    IPC: G09G3/20

    Abstract: An electronic device may include an electronic display panel having multiple display pixels for displaying an image based on analog voltage signals. The electronic device may also include interpolation circuitry to generate the analog voltage signals based on digital image data corresponding to the image. The interpolation circuitry may also receive analog reference voltages and interpolate between sets of the analog reference voltages to generate intermediate voltages, which may be a part of the analog voltage signals. Interpolating between the sets analog reference voltages may include performing a first level interpolation of a first set of the analog reference voltages to generate a first intermediate voltage and performing a second level interpolation of a second set of the analog reference voltages to generate a second intermediate voltage, wherein the first level interpolation is different from the second level interpolation.

    Auto-zero applied buffer for display circuitry
    18.
    发明授权
    Auto-zero applied buffer for display circuitry 有权

    公开(公告)号：US11176888B2

    公开(公告)日：2021-11-16

    申请号：US16905895

    申请日：2020-06-18

    Applicant: Apple Inc.

    Inventor： Shingo Hatanaka ,  Derek Keith Shaeffer ,  John T. Wetherell ,  Nobutaka Shimamura ,  Yuichi Okuda ,  Jaeyoung Kang

    IPC: G09G3/3258 ,  H03F3/30

    Abstract: A system includes a pixel that emits light based on a signal provided to the pixel. The system may also include a buffer circuit having a differential pair stage, a cascade stage, and an output stage. The differential pair stage may receive a common mode voltage signal via a first switch in response to the first switch receiving a first signal that causes the first switch to close. The differential pair stage may couple a capacitor to the output stage via a second switch that operate based on a second signal, such that the capacitor reduces an offset provided by one or more circuit components in the differential pair stage, the cascade stage, the output stage, or any combination thereof. The differential pair stage may output the common mode voltage to the pixel via the output stage in response to the first signal being present.

    Foveated driving for power saving
    19.
    发明授权
    Foveated driving for power saving 有权

    公开(公告)号：US12300139B1

    公开(公告)日：2025-05-13

    申请号：US18328196

    申请日：2023-06-02

    Applicant: Apple Inc.

    Inventor： Omar Hafiz ,  Baris Cagdaser ,  John T. Wetherell ,  Han Zhao

    IPC: G09G3/20

    Abstract: In an embodiment, an electronic display includes an active area including a plurality of pixels arranged in columns and a plurality of source drivers driving image data to columns of pixels. The electronic display also includes a first plurality of switches selectively coupling respective source drivers of the plurality of source drivers to one or more columns. Selective coupling enables the respective source drivers to, at different times, drive the image data to: a single column; and multiple columns. In another embodiment, an electronic display includes a display panel configured to operate using a reference voltage received via a resistive path having a routing resistance, a reference voltage source outputting the reference voltage, and a feedback circuit sensing an electrical parameter of the resistive path and producing a compensation voltage that, when added to the reference voltage, causes the reference voltage to remain substantially constant at the display panel.

    Touch sensing utilizing integrated micro circuitry
    20.
    发明授权
    Touch sensing utilizing integrated micro circuitry 有权

    公开(公告)号：US12080201B2

    公开(公告)日：2024-09-03

    申请号：US18468654

    申请日：2023-09-15

    Applicant: Apple Inc.

    Inventor： Christian M. Sauer ,  Christoph H. Krah ,  Derek K. Shaeffer ,  Hasan Akyol ,  Henry C. Jen ,  John T. Wetherell

    IPC: G06F3/044 ,  G06F3/041 ,  G09G3/32 ,  H01L27/15

    CPC classification number: G09G3/32 ,  G06F3/0412 ,  G06F3/0418 ,  G06F3/044 ,  H01L27/156 ,  G09G2354/00

    Abstract: An integrated touchscreen can include light emitting diodes or organic light emitting diodes (LEDs/OLEDs), display chiplets and touch chiplets disposed in a visible area of the integrated touch screen. For example, the LEDs/OLEDs, display chiplets and touch chiplets can be placed on a substrate by a micro-transfer tool. The integrated touchscreen can also include electrodes disposed in the visible area of the integrated touch screen. The electrodes can be capable of providing display functionality via the one or more display chiplets during display operation (e.g., operating as cathode terminals of the LEDs during the display operation) and capable of providing touch functionality via the touch chiplets during touch operation (e.g., touch node electrodes can be formed from groups of the electrodes and sensed). In some examples, the touch node electrodes can be formed and coupled to touch chiplets via the display chiplets.

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