3DIC STRUCTURE AND METHODS OF FORMING
    1.
    发明公开

    公开(公告)号:US20230154898A1

    公开(公告)日:2023-05-18

    申请号:US18156848

    申请日:2023-01-19

    摘要: A structure and a method of forming are provided. The structure includes a first dielectric layer overlying a first substrate. A first connection pad is disposed in a top surface of the first dielectric layer and contacts a first redistribution line. A first dummy pad is disposed in the top surface of the first dielectric layer, the first dummy pad contacting the first redistribution line. A second dielectric layer overlies a second substrate. A second connection pad and a second dummy pad are disposed in the top surface of the second dielectric layer, the second connection pad bonded to the first connection pad, and the first dummy pad positioned in a manner that is offset from the second dummy pad so that the first dummy pad and the second dummy pad do not contact each other.

    Techniques for wafer stack processing

    公开(公告)号:US11127635B1

    公开(公告)日:2021-09-21

    申请号:US16866685

    申请日:2020-05-05

    摘要: The present disclosure relates to a method for forming a multi-dimensional integrated chip structure. In some embodiments, the method may be performed by bonding a second substrate to an upper surface of a first substrate. A first edge trimming cut is performed along a first loop and extends into a first peripheral portion of the second substrate. A second edge trimming cut is performed along a second loop and extends into a second peripheral portion of the second substrate and into the first substrate. A third edge trimming cut is performed along a third loop and extends into a third peripheral portion of the first substrate.

    IMAGE SENSOR SCHEME FOR OPTICAL AND ELECTRICAL IMPROVEMENT

    公开(公告)号:US20210225919A1

    公开(公告)日:2021-07-22

    申请号:US17219960

    申请日:2021-04-01

    IPC分类号: H01L27/146

    摘要: The present disclosure, in some embodiments, relates to an integrated chip. The integrated chip includes a photodetector arranged within a substrate. The substrate has surfaces defining one or more protrusions arranged along a first side of the substrate over the photodetector. One or more isolation structures are arranged within one or more trenches defined by sidewalls of the substrate arranged on opposing sides of the photodetector. The one or more trenches extend from the first side of the substrate to within the substrate. The one or more isolation structures respectively include a reflective medium configured to reflect electromagnetic radiation.

    Deep trench isolation shrinkage method for enhanced device performance

    公开(公告)号:US10964746B2

    公开(公告)日:2021-03-30

    申请号:US16405102

    申请日:2019-05-07

    摘要: Some embodiments of the present disclosure relate to a method in which a functional layer is formed over an upper semiconductor surface of a semiconductor substrate, and a capping layer is formed over the functional layer. A first etchant is used to form a recess through the capping layer and through the functional layer. The recess has a first depth and exposes a portion of the semiconductor substrate there through. A protective layer is formed along a lower surface and inner sidewalls of the recess. A second etchant is used to remove the protective layer from the lower surface of the recess and to extend the recess below the upper semiconductor surface to a second depth to form a deep trench. To prevent etching of the functional layer, the protective layer remains in place along the inner sidewalls of the recess while the second etchant is used.

    IMAGE SENSOR SCHEME FOR OPTICAL AND ELECTRICAL IMPROVEMENT

    公开(公告)号:US20190067355A1

    公开(公告)日:2019-02-28

    申请号:US15688077

    申请日:2017-08-28

    IPC分类号: H01L27/146

    摘要: The present disclosure relates to an image sensor integrated chip having a deep trench isolation (DTI) structure having a reflective element. In some embodiments, the image sensor integrated chip includes an image sensing element arranged within a substrate. A plurality of protrusions are arranged along a first side of the substrate over the image sensing element and one or more absorption enhancement layers are arranged over and between the plurality of protrusions. A plurality of DTI structures are arranged within trenches disposed on opposing sides of the image sensing element and extend from the first side of the substrate to within the substrate. The plurality of DTI structures respectively include a reflective element having one or more reflective regions configured to reflect electromagnetic radiation. By reflecting electromagnetic radiation using the reflective elements, cross-talk between adjacent pixel regions is reduced, thereby improving performance of the image sensor integrated chip.

    Method for forming trench liner passivation

    公开(公告)号:US10204822B2

    公开(公告)日:2019-02-12

    申请号:US15884304

    申请日:2018-01-30

    IPC分类号: H01L21/02 H01L21/762

    摘要: In a method for fabricating a semiconductor device, a trench is etched in a semiconductor substrate having a top surface, and a lining oxide layer is formed conformal to the trench. A negatively-charged liner covering the lining oxide layer and conformal to the trench is formed. The trench is partially filled with a flowable oxide to a level below the top surface of the semiconductor substrate, and the flowable oxide in the trench is cured. The negatively-charged liner above the cured flowable oxide is optionally removed. A silicon oxide is deposited in the remaining portion of the trench, and a planarization process is performed to remove excess portions of the silicon oxide over the top surface of the semiconductor substrate.