Method for the electrical bonding of semiconductor components

    公开(公告)号:US11362061B2

    公开(公告)日:2022-06-14

    申请号:US16906387

    申请日:2020-06-19

    IPC分类号: H01L23/00

    摘要: A method is disclosed for electrically bonding a first semiconductor component to a second semiconductor component, both components including arrays of contact areas. In one aspect, prior to bonding, layers of an intermetallic compound are formed on the contact areas of the second component. The roughness of the intermetallic layers is such that the intermetallic layers include cavities suitable for insertion of a solder material in the cavities, under the application of a bonding pressure, when the solder is at a temperature below its melting temperature. The components are aligned and bonded, while the solder material is applied between the two. Bonding takes place at a temperature below the melting temperature of the solder. The bond can be established only by the insertion of the solder into the cavities of the intermetallic layers, and without the formation of a second intermetallic layer.

    METHOD FOR BONDING SEMICONDUCTOR COMPONENTS

    公开(公告)号:US20210159207A1

    公开(公告)日:2021-05-27

    申请号:US17102249

    申请日:2020-11-23

    申请人: IMEC vzw

    IPC分类号: H01L23/00 B23K1/008

    摘要: A method of bonding semiconductor components is described. In one aspect a first component, for example a semiconductor die, is bonded to a second component, for example a semiconductor wafer or another die, by direct metal-metal bonds between metal bumps on one component and corresponding bumps or contact pads on the other component. In addition, a number of solder bumps are provided on one of the components, and corresponding contact areas on the other component, and fast solidified solder connections are established between the solder bumps and the corresponding contact areas, without realizing the metal-metal bonds. The latter metal-metal bonds are established in a heating step performed after the soldering step. This enables a fast bonding process applied to multiple dies bonded on different areas of the wafer and/or stacked one on top of the other, followed by a single heating step for realizing metal-metal bonds between the respective dies and the wafer or between multiple stacked dies. The method allows to improve the throughput of the bonding process, as the heating step takes place only once for a plurality of dies and/or wafers.

    METHOD FOR BONDING AND INTERCONNECTING MICRO-ELECTRONIC COMPONENTS

    公开(公告)号:US20240203965A1

    公开(公告)日:2024-06-20

    申请号:US18538422

    申请日:2023-12-13

    申请人: IMEC VZW

    摘要: A method for bonding and interconnecting micro-electronic components is provided. In one aspect, two substrates are bonded to form a 3D assembly of micro-electronic components. Both substrates include first cavities open to the respective bonding surfaces, and at least one substrate includes a second cavity that is larger than the first cavities in terms of its in-plane dimensions, and possibly also in terms of its depth. An electrically conductive layer is produced on each substrate. The layer is patterned in the second cavity, and a micro-electronic device is fabricated in the second cavity. The bonding surfaces are planarized, removing the conformal layer from the bonding surfaces, and the substrates are bonded to form the assembly, where the first cavities of both substrates are brought into mutual contact to form an electrical connection. Device in the large cavities may be contacted through TSV connections or back end of line interconnect levels.