Dual facing BSI image sensors with wafer level stacking

    公开(公告)号:US11037978B2

    公开(公告)日:2021-06-15

    申请号:US16658355

    申请日:2019-10-21

    IPC分类号: H01L27/146

    摘要: A device includes two BSI image sensor elements and a third element. The third element is bonded in between the two BSI image sensor elements using element level stacking methods. Each of the BSI image sensor elements includes a substrate and a metal stack disposed over a first side of the substrate. The substrate of the BSI image sensor element includes a photodiode region for accumulating an image charge in response to radiation incident upon a second side of the substrate. The third element also includes a substrate and a metal stack disposed over a first side of the substrate. The metal stacks of the two BSI image sensor elements and the third element are electrically coupled.

    Image sensor device and method
    10.
    发明授权

    公开(公告)号:US10748948B2

    公开(公告)日:2020-08-18

    申请号:US15610034

    申请日:2017-05-31

    IPC分类号: H01L27/146

    摘要: A system and method for forming pixels in an image sensor is provided. In an embodiment, a semiconductor device includes an image sensor including a first pixel region and a second pixel region in a substrate, the first pixel region being adjacent to the second pixel region. A first anti-reflection coating is over the first pixel region, the first anti-reflection coating reducing reflection for a first wavelength range of incident light. A second anti-reflection coating is over the second pixel region, the second anti-reflection coating reducing reflection for a second wavelength range of incident light that is different from the first wavelength range.