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    CMOS IMAGE SENSOR WITH NOISE CANCELLATION
    2.
    发明公开
    CMOS IMAGE SENSOR WITH NOISE CANCELLATION 审中-公开
    噪音消除CMOS图像传感器

    公开(公告)号：EP1452015A1

    公开(公告)日：2004-09-01

    申请号：EP02782274.1

    申请日：2002-11-06

    申请人： Candela Microsystems

    发明人： TAY, Hiok, Nam

    IPC分类号： H04N5/335 ,  H04N5/217

    CPC分类号： G11C11/407 ,  H01L27/14643 ,  H04N1/32358 ,  H04N1/32475 ,  H04N1/32491 ,  H04N1/40 ,  H04N5/3575 ,  H04N5/363 ,  H04N5/378 ,  H04N9/045 ,  H04N9/64 ,  H04N9/642 ,  H04N2201/0081 ,  H04N2201/3292

    摘要： An image sensor (10) that has one or more pixels within a pixel array (12). The pixel array may be coupled to a control circuit (20) and one or more subtraction circuits (56). The control circuit may cause each pixel to provide a first reference output signal and a reset output signal. The control circuit may then cause each pixel to provide a light response output signal and a second reference output signal. The light response output signal corresponds to the image that is to be captured by the sensor. The subtraction circuit may provide a difference between the reset output signal and the first reference output signal to create a noise signal that is stored in memory. The subtraction circuit may also provide a difference between the second reference output signal and the light response output signal to create a normalized light response output signal. The noise signal may then be subtracted from the normalized light response output signal to generate the output data of the sensor. The second reference output signal is the same as the first reference output signal so that the process in essence subtracts the reset noise from the light response signal.

    LIGHT GUIDE ARRAY FOR AN IMAGE SENSOR
    5.
    发明公开
    LIGHT GUIDE ARRAY FOR AN IMAGE SENSOR 有权
    光纤安排光电传感器

    公开(公告)号：EP2449590A1

    公开(公告)日：2012-05-09

    申请号：EP09785981.3

    申请日：2009-07-02

    申请人： CANDELA MICROSYSTEMS (S) PTE. LTD. ,  Tay, Hiok Nam

    发明人： TAY, Hiok, Nam ,  DO, Thanh, Trung

    IPC分类号： H01L27/146

    CPC分类号： H04N5/2254 ,  H01L27/14618 ,  H01L27/14627 ,  H01L27/14629 ,  H01L27/1463 ,  H01L27/14632 ,  H01L27/14643 ,  H01L27/14687 ,  H01L27/14689 ,  H01L31/02162 ,  H01L31/0232 ,  H01L2924/0002 ,  H01L2924/00

    摘要： An image sensor pixel that includes a photoelectric conversion unit (102) supported by a substrate (106) and an insulator (110) adjacent to the substrate. The pixel includes a cascaded light guide (116,130) that is located within an opening of the insulator and extends above the insulator such that a portion of the cascaded light guide has an air interface. The air interface improves the internal reflection of the cascaded light guide. The cascaded light guide may include a self-aligned color filter (114B,114G) having air-gaps (422) between adjacent color filters. Air-gaps may be sealed from above by a transparent sealing film. (500) The transparent sealing film may have a concave surface (510) over the air-gap (422) to diverge light away from the air- gap into adjacent color filters. These characteristics of the light guide eliminate the need for a microlens. Additionally, an anti-reflection stack (230) is interposed between the substrate and the light guide to reduce backward reflection from the image sensor. Two pixels of having different color filters may have a difference in the thickness of an anti-reflection film within the anti-reflection stack.