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    Image sensor with subtractive color filter pattern
    1.
    发明授权
    Image sensor with subtractive color filter pattern 有权

    公开(公告)号：US11412190B2

    公开(公告)日：2022-08-09

    申请号：US16983844

    申请日：2020-08-03

    Applicant: OMNIVISION TECHNOLOGIES, INC.

    Inventor： Chen-Wei Lu ,  Yin Qian ,  Eiichi Funatsu ,  Jin Li

    IPC: H04N9/083 ,  H04N9/04 ,  H04N11/20

    Abstract: An image sensor includes a photodiode array and a color filter array optically aligned with the photodiode array. The photodiode array includes a plurality of photodiodes disposed within respective portions of a semiconductor material. The color filter array includes a plurality of color filters arranged to form a plurality of tiled minimal repeating units. Each minimal repeating unit includes at least a first color filter with a red spectral photoresponse, a second color filter with a yellow spectral photoresponse, and a third color filter with a panchromatic spectral photoresponse.

    EDGE REFLECTION REDUCTION
    2.
    发明申请
    EDGE REFLECTION REDUCTION 审中-公开

    公开(公告)号：US20180226447A1

    公开(公告)日：2018-08-09

    申请号：US15945530

    申请日：2018-04-04

    Applicant: OmniVision Technologies, Inc.

    Inventor： Chia-Chun Miao ,  Yin Qian ,  Chao-Hung Lin ,  Chen-Wei Lu ,  Dyson H. Tai ,  Ming Zhang ,  Jin Li

    IPC: H01L27/146

    CPC classification number: H01L27/14623 ,  H01L27/14618 ,  H01L27/14625 ,  H01L27/14685 ,  H01L27/14687

    Abstract: A method of image sensor package fabrication includes providing an image sensor, including a pixel array disposed in a semiconductor material, and a transparent shield adhered to the semiconductor material. The pixel array is disposed between the semiconductor material and the transparent shield. The method further includes removing portions of the transparent shield to form recessed regions in the transparent shield, where lateral bounds of the transparent shield extend beyond lateral bounds of the pixel array, and wherein the recessed regions are disposed in portions of the transparent shield that extend beyond the lateral bounds of the pixel array. The recessed regions are filled with a light blocking layer.

    HALF QUAD PHOTODIODE (QPD) TO IMPROVE QPD CHANNEL IMBALANCE
    6.
    发明公开
    HALF QUAD PHOTODIODE (QPD) TO IMPROVE QPD CHANNEL IMBALANCE 审中-公开

    公开(公告)号：US20230395628A1

    公开(公告)日：2023-12-07

    申请号：US17832399

    申请日：2022-06-03

    Applicant: OMNIVISION TECHNOLOGIES, INC.

    Inventor： Chin Poh Pang ,  Wei Deng ,  Chen-Wei Lu ,  Da Meng ,  Guansong Liu ,  Yin Qian ,  Xiaodong Yang ,  Hongjun Li ,  Zhiqiang Lin ,  Chao Niu

    IPC: H01L27/146

    CPC classification number: H01L27/14627 ,  H01L27/14645

    Abstract: Half Quad Photodiode (QPD) for improving QPD channel imbalance. In one embodiment, an image sensor includes a plurality of pixels arranged in rows and columns of a pixel array that is disposed in a semiconductor material. Each pixel includes a plurality of subpixels. Each subpixel comprises a plurality of first photodiodes, a plurality of second photodiodes and a plurality of third photodiodes. The plurality of pixels are configured to receive incoming light through an illuminated surface of the semiconductor material. A plurality of small microlenses are individually distributed over individual first photodiodes and individual second photodiodes of each subpixel. A plurality of large microlenses are each distributed over a plurality of third photodiodes of each subpixel. A diameter of the small microlenses is smaller than a diameter of the large microlenses.

    Light control for improved near infrared sensitivity and channel separation
    7.
    发明授权
    Light control for improved near infrared sensitivity and channel separation 有权

    公开(公告)号：US10964744B1

    公开(公告)日：2021-03-30

    申请号：US16570920

    申请日：2019-09-13

    Applicant: OMNIVISION TECHNOLOGIES, INC.

    Inventor： Cheng Zhao ,  Chen-Wei Lu ,  Cunyu Yang ,  Ping-Hsu Chen ,  Zhiqiang Lin ,  Chengming Liu

    IPC: G01J5/20 ,  H01L27/14 ,  H01L27/146

    Abstract: Light control for improved near infrared sensitivity and channel separation for an image sensor. In one embodiment, an image sensor includes: a plurality of photodiodes arranged in rows and columns of a pixel array; and a light filter layer having a plurality of light filters configured over the plurality of photodiodes. The light filter layer has a first side facing the plurality of photodiodes and a second side facing away from the first side. The image sensor also includes a color filter layer having a plurality of color filters configured over the plurality of photodiodes. The color filter layer has a first surface facing the second side of the light filter layer and a second surface facing away from the first layer. Individual micro-lenses are configured to direct incoming light through corresponding light filter and color filter onto the respective photodiode.

    Combined visible and infrared image sensor incorporating selective infrared optical filter
    8.
    发明授权
    Combined visible and infrared image sensor incorporating selective infrared optical filter 有权

    公开(公告)号：US10609309B1

    公开(公告)日：2020-03-31

    申请号：US16106373

    申请日：2018-08-21

    Applicant: OmniVision Technologies, Inc.

    Inventor： Tawei Ho ,  Chen-Wei Lu ,  Cheng-ming Liu

    IPC: H04N5/33

    Abstract: A pixel array comprise a green pixel comprising a first green optical filter and a first clear filter, a red pixel comprising a red optical filter and a first special filter, a blue pixel comprising a blue optical filter and a second special filter, and an IR pixel comprising an IR optical filter and one of a second green optical filter and a second clear filter, where the first special filter suppresses a transmission of IR at a stopband centered at 850 nm at a first IR minimum transmission, and the second special filter suppresses a transmission of IR at the stopband centered at 850 nm at a second IR minimum transmission, and where the first minimum IR transmission is different from the second minimum IR transmission.

    Combined visible and infrared image sensor incorporating selective infrared optical filter
    9.
    发明授权
    Combined visible and infrared image sensor incorporating selective infrared optical filter 有权

    公开(公告)号：US10425597B2

    公开(公告)日：2019-09-24

    申请号：US15620757

    申请日：2017-06-12

    Applicant: OmniVision Technologies, Inc.

    Inventor： Chen-Wei Lu ,  Ping-Hsu Chen ,  Yin Qian ,  Eiichi Funatsu

    IPC: H04N5/33 ,  H04N5/225 ,  H04N5/232 ,  H04N9/04

    Abstract: An image sensor system, comprising a pixel array that includes at least a first type pixel and a second type pixel, wherein each first type pixel is configured to sense light of a first optical spectral range; and each second pixel is configured to sense light of a second optical spectral range; an optical filter located above the pixel array, said optical filter configured to pass a third optical spectral range and a fourth optical spectral range that is different from the third optical spectral range, wherein the fourth optical spectral range is less than the second optical spectral range; a light source that emits light in a fifth optical spectral range, wherein the fifth optical spectral range at least overlaps with the fourth optical spectral range; and a controller that controls the image sensor system to selectively operate in a first mode that uses said first optical spectral range, and a second mode that uses said second optical spectral range.

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