METHODS OF THINNING SILICON ON EPOXY MOLD COMPOUND FOR RADIO FREQUENCY (RF) APPLICATIONS

    公开(公告)号:US20210090905A1

    公开(公告)日:2021-03-25

    申请号:US16579723

    申请日:2019-09-23

    Abstract: Embodiments of methods for processing a semiconductor substrate are described herein. In some embodiments, a method of processing a semiconductor substrate includes removing material from a backside of a reconstituted substrate having a plurality of dies to expose at least one die of the plurality of dies; etching the backside of the reconstituted substrate to remove material from the exposed at least one die; and depositing a first layer of material on the backside of the reconstituted substrate and the exposed at least one die.

    Methods and apparatus for semiconductor package processing

    公开(公告)号:US10515927B2

    公开(公告)日:2019-12-24

    申请号:US15634012

    申请日:2017-06-27

    Abstract: A fan-out process using chemical mechanical planarization (CMP) reduces the step-height between a semiconductor die and the surrounding overmolding of a reconstituted wafer. The reconstituted wafer is formed by overmolding a back side of at least one die that is placed with an active side facing down. The reconstituted wafer is then oriented to expose the die and the active side. A polymer layer is then formed over the reconstituted wafer. A CMP process then removes a portion of the polymer layer until a certain thickness above the die surface is obtained, reducing the step-height between the polymer layer on top of the die surface and the polymer layer on the adjacent mold compound surface. The CMP process can also be performed after a subsequent redistribution layer is formed on the reconstituted wafer.

    Diffusion layers in metal interconnects

    公开(公告)号:US11901225B2

    公开(公告)日:2024-02-13

    申请号:US17474394

    申请日:2021-09-14

    Abstract: Exemplary methods of plating are described. The methods may include contacting a patterned substrate with a plating bath in a plating chamber. The patterned substrate includes at least one metal interconnect with a contact surface that is exposed to the plating bath. The metal interconnect is made of a first metal characterized by a first reduction potential. The methods further include plating a diffusion layer on the contact surface of the metal interconnect. The diffusion layer is made of a second metal characterized by a second reduction potential that is larger than the first reduction potential of the first metal in the metal interconnects. The plating bath also includes one or more ions of the second metal and a grain refining compound that reduces the formation of pinhole defects in the diffusion layer.

    Methods of thinning silicon on epoxy mold compound for radio frequency (RF) applications

    公开(公告)号:US11355358B2

    公开(公告)日:2022-06-07

    申请号:US16579723

    申请日:2019-09-23

    Abstract: Embodiments of methods for processing a semiconductor substrate are described herein. In some embodiments, a method of processing a semiconductor substrate includes removing material from a backside of a reconstituted substrate having a plurality of dies to expose at least one die of the plurality of dies; etching the backside of the reconstituted substrate to remove material from the exposed at least one die; and depositing a first layer of material on the backside of the reconstituted substrate and the exposed at least one die.

    METHODS AND APPARATUS FOR SEMICONDUCTOR PACKAGE PROCESSING

    公开(公告)号:US20180308822A1

    公开(公告)日:2018-10-25

    申请号:US15634012

    申请日:2017-06-27

    Abstract: A fan-out process using chemical mechanical planarization (CMP) reduces the step-height between a semiconductor die and the surrounding overmolding of a reconstituted wafer. The reconstituted wafer is formed by overmolding a back side of at least one die that is placed with an active side facing down. The reconstituted wafer is then oriented to expose the die and the active side. A polymer layer is then formed over the reconstituted wafer. A CMP process then removes a portion of the polymer layer until a certain thickness above the die surface is obtained, reducing the step-height between the polymer layer on top of the die surface and the polymer layer on the adjacent mold compound surface. The CMP process can also be performed after a subsequent redistribution layer is formed on the reconstituted wafer.

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