Semiconductor devices having cutouts in an encapsulation material and associated production methods

    公开(公告)号:US11145563B2

    公开(公告)日:2021-10-12

    申请号:US16447610

    申请日:2019-06-20

    Abstract: A method comprises providing a least one semiconductor component, wherein each of the at least one semiconductor component comprises: a semiconductor chip, wherein the semiconductor chip comprises a first main surface and a second main surface opposite the first main surface, and a sacrificial layer arranged above the opposite second main surface of the semiconductor chip. The method further comprises encapsulating the at least one semiconductor component with an encapsulation material. The method further comprises removing the sacrificial material, wherein above each of the at least one semiconductor chip a cutout is formed in the encapsulation material. The method further comprises arranging at least one lid above the at least one cutout, wherein a closed cavity is formed by the at least one cutout and the at least one lid above each of the at least one semiconductor chip.

    Method for producing packaged MEMS assemblies at the wafer level, and packaged MEMS assembly

    公开(公告)号:US10793429B2

    公开(公告)日:2020-10-06

    申请号:US16748087

    申请日:2020-01-21

    Abstract: A production method includes providing a semiconductor substrate with a wiring layer stack having cutouts on a first main surface region of the semiconductor substrate at which MEMS components are arranged in an exposed manner in the cutouts and projecting through contact elements are arranged at metallization regions of the wiring layer stack; applying a b-stage material layer cured in an intermediate stage on the wiring layer stack, such that the cutouts are covered by the b-stage material layer and the vertically projecting through contact elements are introduced into the b-stage material layer; curing the b-stage material layer to obtain a cured b-stage material layer; thinning the cured b-stage material layer; and applying a redistribution layer (RDL) structure on the thinned, cured b-stage material layer to obtain an electrical connection between the wiring layer stack and the RDL structure via the through contact elements.

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