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    Flare-blocking image sensor
    21.
    发明授权
    Flare-blocking image sensor 有权

    公开(公告)号：US12136637B2

    公开(公告)日：2024-11-05

    申请号：US17963015

    申请日：2022-10-10

    Applicant: OmniVision Technologies, Inc.

    Inventor： Alireza Bonakdar ,  Shinn-Jhy Lian ,  Badrinath Padmanabhan

    IPC: H01L27/146

    Abstract: A flare-blocking image sensor includes large pixels and small pixels, a microlens, and an opaque element. The large pixels and small pixels form a first and second pixel array respectively, each having a pixel pitch Px and Py. The second pixel array is offset from the first pixel array by ½Px and ½Py. A first large pixel of the large pixels is between and collinear with a first and a second small pixel separated by √{square root over (Px2+Py2)} in a first direction and each having a width W less than both pixel pitch Px and Py. The microlens is aligned with the first large pixel. The opaque element is between the first large pixel and the microlens and extends, in the first direction, less than 1 2 ⁢ ( P x 2 + P y 2 - W ) from the first small pixel toward the second small pixel. The opaque element has a width perpendicular to the first direction not exceeding width W.

    Image sensor with reduced petal flare
    25.
    发明授权
    Image sensor with reduced petal flare 有权

    公开(公告)号：US11289523B2

    公开(公告)日：2022-03-29

    申请号：US16563052

    申请日：2019-09-06

    Applicant: OMNIVISION TECHNOLOGIES, INC.

    Inventor： Alireza Bonakdar ,  Zhiqiang Lin

    IPC: H01L27/00 ,  H01L27/146

    Abstract: An image sensor includes a substrate material, an array of the color filters, an array of waveguides and spacers. The substrate material includes a plurality of photodiodes disposed therein. The array of color filters are disposed over the substrate material. The array of waveguides are disposed over the substrate material. The buffer layer is disposed between the substrate material and the arrays of color filters and waveguides. The spacers are disposed between the color filters in the array of color filters. The spacers are disposed between the waveguides in the array of waveguides. Incident light is adapted to be confined between the spacers. The incident light is adapted to be directed through one of the waveguides and through one of the color filters prior to being directed through the buffer layer into one of the photodiodes in the substrate material.

    LIQUID CRYSTAL ON SILICON DEVICE WITH MICROLENS
    28.
    发明申请
    LIQUID CRYSTAL ON SILICON DEVICE WITH MICROLENS 有权

    公开(公告)号：US20210341807A1

    公开(公告)日：2021-11-04

    申请号：US16864890

    申请日：2020-05-01

    Applicant: OmniVision Technologies, Inc.

    Inventor： Alireza Bonakdar ,  Libo Weng ,  Badrinath Padmanabhan

    IPC: G02F1/1362 ,  G02F1/1335 ,  G02F1/1343 ,  G02F1/1337

    Abstract: A liquid crystal on silicon device is described. The liquid crystal on silicon device includes a plurality of mirror electrodes, a transparent electrode, a liquid crystal material, and a plurality of microlenses. The plurality of mirror electrodes are arranged periodically to form an array of pixels, each pixel included in the array of pixels configurable to reflect incident light. The transparent electrode is optically aligned with the plurality of mirror electrodes. The liquid crystal material is disposed between the transparent electrode and the plurality of mirror electrodes. The plurality of microlenses are optically aligned with the plurality of mirror electrodes. Each microlens included in the plurality of microlenses is positioned to focus the incident light on a respective one of the plurality of mirror electrodes.

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