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    Driving Circuit and Pixel Element
    1.
    发明公开
    Driving Circuit and Pixel Element 审中-公开

    公开(公告)号：US20240355278A1

    公开(公告)日：2024-10-24

    申请号：US18410964

    申请日：2024-01-11

    Applicant: VisionChip Technology Ltd.

    Inventor： Cheng-Hung Lin

    IPC: G09G3/3233 ,  G09G3/32

    CPC classification number: G09G3/3233 ,  G09G3/32 ,  G09G2300/0857 ,  G09G2330/021

    Abstract: A pixel element includes an emissive pixel element; and a driving circuit, coupled to the emissive pixel element, comprising: a memory circuit; a current source circuit; and a modulation circuit, coupled to the memory circuit, the current source circuit and the emissive pixel element, configured to control the current source circuit to inject a modulation current into the emissive pixel element according to modulation signals received from the memory circuit.

    Spatial light modulator
    4.
    发明授权
    Spatial light modulator 有权

    公开(公告)号：US11979688B2

    公开(公告)日：2024-05-07

    申请号：US17408012

    申请日：2021-08-20

    Applicant: DUALITAS LTD

    Inventor： Jamieson Christmas

    IPC: H04N9/31 ,  G03H1/00 ,  G03H1/22 ,  G09G3/00 ,  G09G3/20 ,  G09G3/36

    CPC classification number: H04N9/312 ,  G03H1/0005 ,  G03H1/2294 ,  G09G3/003 ,  G09G3/2022 ,  G09G3/3648 ,  H04N9/3108 ,  G03H2001/0088 ,  G03H2240/61 ,  G09G2300/0857 ,  G09G2310/0286

    Abstract: A liquid crystal on silicon spatial light modulator comprising an array of light-modulating pixels and a controller are disclosed. Each light-modulating pixel of the array comprises liquid crystal and is associated with a respective flip-flop. The controller receives a hologram of an image comprising a plurality of hologram pixels. Each hologram pixel comprises a respective n-bit hologram pixel value. The controller drives each light-modulating pixel in accordance with a respective hologram pixel value of the hologram. There is a one-to-n pixel correlation between the hologram and the light-modulating pixels. The flip-flops of each contiguous group of n light-modulating pixels are connected in series to form a shift register. During operation of the shift register, the n-bit hologram pixel value associated with each contiguous group of n light-modulating pixels is provided to each light-modulating pixel one bit at a time over the course of at least n clock cycles.

    DUAL-VOLTAGE PIXEL CIRCUITRY FOR LIQUID CRYSTAL DISPLAY
    8.
    发明公开
    DUAL-VOLTAGE PIXEL CIRCUITRY FOR LIQUID CRYSTAL DISPLAY 审中-公开

    公开(公告)号：US20230377532A1

    公开(公告)日：2023-11-23

    申请号：US18252462

    申请日：2020-12-10

    Applicant: Snap Inc.

    Inventor： James L. Sanford ,  Howard V. Goetz ,  Stewart S. Taylor

    IPC: G09G3/36

    CPC classification number: G09G3/3696 ,  G09G2300/0838 ,  G09G2300/0857 ,  G09G2300/0828

    Abstract: Systems and methods for a digital pixel circuit for liquid crystal displays are provided. The design includes a dual-voltage pixel design, a two-transistor level-shift circuit design, self-adjusting transistor bias circuitry; and an optional on-chip test-array to determine die-specific design-center values for critical transistor leakage and threshold parameters. Level shift design simplicity, small pixel pitch, and applicability for small display applications such as microdisplays, are among the various benefits and advantages obtained.

    PIXEL, DISPLAY DEVICE REDUCING STATIC POWER CONSUMPTION AND DRIVING METHOD THEREOF
    9.
    发明公开
    PIXEL, DISPLAY DEVICE REDUCING STATIC POWER CONSUMPTION AND DRIVING METHOD THEREOF 审中-公开

    公开(公告)号：US20230290304A1

    公开(公告)日：2023-09-14

    申请号：US17852942

    申请日：2022-06-29

    Applicant: Sapien Semiconductors Inc.

    Inventor： Ji Han Kim ,  Jin Woong Jang ,  Ji Haeng Lee ,  Dae Young Jung ,  Jong Gu Jeon

    IPC: G09G3/3233

    CPC classification number: G09G3/3233 ,  G09G2300/0857 ,  G09G2300/0852 ,  G09G2310/061 ,  G09G2310/08 ,  G09G2330/021

    Abstract: Provided is a pixel driving circuit capable of reducing power consumed for pixel driving by reducing the number of times a capacitor is charged. The pixel driving circuit includes: a video memory configured to store video data related to driving of a plurality of light-emitting devices; a plurality of sub-pixel driving units, respectively corresponding to the plurality of light-emitting devices, configured to supply power to the plurality of light-emitting devices according to the video data stored in the video memory, each of the plurality of sub-pixel driving units having a capacitor unit for charging power required for driving each of the plurality of light-emitting devices; a charge control memory configured to store data related to charging of the capacitor unit; and a charge controller configured to control whether the capacitor unit is charged according to charge control data stored in the charge control memory.

    Display device having touch sensor
    10.
    发明授权
    Display device having touch sensor 有权

    公开(公告)号：US11755147B2

    公开(公告)日：2023-09-12

    申请号：US17632451

    申请日：2019-08-19

    Applicant: ACONIC INC.

    Inventor： Min Jae Lee

    IPC: G06F3/041 ,  G06F3/044 ,  G09G3/3266 ,  G09G3/3275 ,  H10K59/40

    CPC classification number: G06F3/04182 ,  G06F3/044 ,  G06F3/04184 ,  G09G3/3266 ,  G09G3/3275 ,  H10K59/40 ,  G09G2300/0857 ,  G09G2310/027 ,  G09G2310/0278 ,  G09G2320/0276

    Abstract: Provided is a display device having a touch sensor capable of improving touch sensitivity by removing the influence of display noise. The display device includes: a display panel including pixels connected to data lines and scan lines; a scan driver for supplying scan signals to the pixels through the scan lines; a data driver for receiving digital image data, converting the digital image data into an analog data signal, and supplying the analog data signal to the pixels through the data lines; a data variance calculator for calculating a variance in image data for each data channel by using the digital image data, and summing the variance in image data for each data channel to calculate an integrated data variance value; and a plurality of correction value calculators for calculating a touch correction value for each sensing channel by using the integrated data variance value.

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