REDUCING IN-PLANE DISTORTION FROM WAFER TO WAFER BONDING USING A DUMMY WAFER

    公开(公告)号:US20190304784A1

    公开(公告)日:2019-10-03

    申请号:US15943551

    申请日:2018-04-02

    Abstract: Embodiments of the present disclosure describe techniques for reducing in-plane distortion from wafer to wafer bonding using a dummy wafer. One embodiment is an apparatus formed using a dummy wafer, the apparatus comprising: a device layer fusion bonded to a first side of a carrier wafer, wherein the dummy wafer comprises a first wafer and the carrier wafer comprises a second wafer that is different than the first wafer; wherein the device layer comprise a portion of a third wafer that is different than the second wafer; and wherein a second opposite side of the carrier wafer includes: a removal process artifact, wherein a distortion signature present in the portion of the second wafer is indicative of the use of the dummy wafer fusion bonded to the second side of the carrier wafer, or a remainder of the dummy wafer. Other embodiments may be disclosed and/or claimed.

    STRESS COMPENSATION FOR WAFER TO WAFER BONDING

    公开(公告)号:US20200303191A1

    公开(公告)日:2020-09-24

    申请号:US16356402

    申请日:2019-03-18

    Abstract: Embodiments herein describe techniques for bonded wafers that includes a first wafer bonded with a second wafer, and a stress compensation layer in contact with the first wafer or the second wafer. The first wafer has a first stress level at a first location, and a second stress level different from the first stress level at a second location. The stress compensation layer includes a first material at a first location of the stress compensation layer that induces a third stress level at the first location of the first wafer, a second material different from the first material at a second location of the stress compensation layer that induces a fourth stress level different from the third stress level at the second location of the first wafer. Other embodiments may be described and/or claimed.

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