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    Lighting unit with zonal illumination of a display panel
    11.
    发明授权
    Lighting unit with zonal illumination of a display panel 有权

    公开(公告)号：US12105377B2

    公开(公告)日：2024-10-01

    申请号：US18076223

    申请日：2022-12-06

    Applicant: Meta Platforms Technologies, LLC

    Inventor： Zhimin Shi ,  Jian Xu ,  Yijing Fu

    IPC: G02F1/1335 ,  F21V8/00 ,  G02F1/13357

    CPC classification number: G02F1/133607 ,  G02B6/0006 ,  G02B6/0008 ,  G02F1/133524 ,  G02F1/133621

    Abstract: A lighting unit for a display panel includes a light distribution module, an array of out-couplers, and a beam spot array generation module. The light distribution module includes a plurality of output waveguides for configurably distributing illuminating light between the output waveguides. Each out-coupler is coupled to an output waveguide and configured to out-couple a portion of the illuminating light to propagate towards the display panel. The beam spot array generation module is configured to receive portions of the illuminating light out-coupled by out-couplers of the array of out-couplers and to convert each portion to illuminate a zone of the display panel with an illuminating light field comprising an array of light spots. Each light spot is configured for illuminating an individual pixel or sub-pixel of the zone of the display panel.

    DISPLAY BACKPLANES WITH INTEGRATED ELECTRONICS, PHOTONICS AND COLOR CONVERSION
    12.
    发明公开
    DISPLAY BACKPLANES WITH INTEGRATED ELECTRONICS, PHOTONICS AND COLOR CONVERSION 审中-公开

    公开(公告)号：US20240085740A1

    公开(公告)日：2024-03-14

    申请号：US18464338

    申请日：2023-09-11

    Applicant: Meta Platforms Technologies, LLC

    Inventor： Zhimin Shi ,  Xi Wu ,  James Ronald Bonar ,  Yun Wang ,  Edward Buckley

    IPC: G02F1/1335 ,  F21V8/00

    CPC classification number: G02F1/133614 ,  G02B6/0001

    Abstract: In some examples, an apparatus may include a backlight unit (BLU) including an electronic integrated circuit layer, a photonic integrated circuit layer, a color conversion module, and a display interface layer. In some examples, a BLU may include at least one laser or may be configured to receive laser light from at least one external laser source. Laser light may be transmitted towards a portion of the display interface layer using the photonic integrated circuit. Color conversion modules may be used to convert the laser light into one or more desired colors. Example apparatus may be used in head-mounted devices such as augmented reality and/or virtual reality devices. Other devices, methods, systems, and computer-readable media are also disclosed.

    ZONAL ILLUMINATION WITH PHOTONIC CIRCUITS FOR DISPLAYS
    15.
    发明申请
    ZONAL ILLUMINATION WITH PHOTONIC CIRCUITS FOR DISPLAYS 有权

    公开(公告)号：US20250130447A1

    公开(公告)日：2025-04-24

    申请号：US18405521

    申请日：2024-01-05

    Applicant: Meta Platforms Technologies, LLC

    Inventor： Guohua Wei ,  Peter Topalian ,  Min Chul Shin ,  Risheng Cheng ,  Zhujun Shi ,  Zhaoning Yu ,  Jonathan Robert Peterson ,  Zhimin Shi ,  Giuseppe Calafiore ,  Heqing Huang

    IPC: G02F1/03 ,  G02B27/01 ,  G02F1/035 ,  G02F1/21

    Abstract: In some examples, a device may include a backlight unit configured to illuminate a display. In some examples, a light source may direct light into an active photonic circuit. The active photonic circuit may include optical switches controllable to distribute the light to illuminate display zones. An active photonic circuit may include an arrangement of optical switches configured to allow particular zones to be raster scanned, for example, using light distribution and outcoupling further using a passive photonic circuit. The illumination intensity for each zone may be controlled using the optical switches and/or with variation of the light source intensity. In some examples, the illumination intensity for each zone can be varied based on the displayed content, allowing improved contrast ratios. In some examples, all zones may be illuminated simultaneously with a zonal illumination intensity based on displayed content. Other devices, methods, systems, and computer-readable media are also disclosed.

    Display backplanes with integrated electronics, photonics and color conversion components
    17.
    发明授权
    Display backplanes with integrated electronics, photonics and color conversion components 有权

    公开(公告)号：US12216357B2

    公开(公告)日：2025-02-04

    申请号：US18464338

    申请日：2023-09-11

    Applicant: Meta Platforms Technologies, LLC

    Inventor： Zhimin Shi ,  Xi Wu ,  James Ronald Bonar ,  Yun Wang ,  Edward Buckley

    IPC: G02F1/1335 ,  F21V8/00

    Abstract: In some examples, an apparatus may include a backlight unit (BLU) including an electronic integrated circuit layer, a photonic integrated circuit layer, a color conversion module, and a display interface layer. In some examples, a BLU may include at least one laser or may be configured to receive laser light from at least one external laser source. Laser light may be transmitted towards a portion of the display interface layer using the photonic integrated circuit. Color conversion modules may be used to convert the laser light into one or more desired colors. Example apparatus may be used in head-mounted devices such as augmented reality and/or virtual reality devices. Other devices, methods, systems, and computer-readable media are also disclosed.

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