LASER ABLATION SYSTEM FOR PACKAGE FABRICATION

    公开(公告)号:US20230282498A1

    公开(公告)日:2023-09-07

    申请号:US18195234

    申请日:2023-05-09

    Abstract: The present disclosure relates to systems and methods for fabricating semiconductor packages, and more particularly, for forming features in semiconductor packages by laser ablation. In one embodiment, the laser systems and methods described herein can be utilized to pattern a substrate to be utilized as a package frame for a semiconductor package having one or more interconnections formed therethrough and/or one or more semiconductor dies disposed therein. The laser systems described herein can produce tunable laser beams for forming features in a substrate or other package structure. Specifically, frequency, pulse width, pulse shape, and pulse energy of laser beams are tunable based on desired sizes of patterned features and on the material in which the patterned features are formed. The adjustability of the laser beams enables rapid and accurate formation of features in semiconductor substrates and packages with controlled depth and topography.

    SUBSTRATE STRUCTURING METHODS
    4.
    发明申请

    公开(公告)号:US20220278248A1

    公开(公告)日:2022-09-01

    申请号:US17747408

    申请日:2022-05-18

    Abstract: The present disclosure relates to methods and apparatus for structuring a semiconductor substrate. In one embodiment, a method of substrate structuring includes applying a resist layer to a substrate optionally disposed on a carrier. The resist layer is patterned using ultraviolet radiation or laser ablation. The patterned portions of the resist layer are then transferred onto the substrate by micro-blasting to form desired features in the substrate while unexposed or un-ablated portions of the resist layer shield the rest of the substrate. The substrate is then exposed to an etch process and a de-bonding process to remove the resist layer and release the carrier.

    LASER ABLATION FOR PACKAGE FABRICATION

    公开(公告)号:US20210346983A1

    公开(公告)日:2021-11-11

    申请号:US16871302

    申请日:2020-05-11

    Abstract: A method of fabricating a frame to enclose one or more semiconductor dies includes forming one or more features including one or more cavities and one or more through-vias in a substrate by a first laser ablation process, filling the one or more through-vias with a dielectric material, and forming a via-in-via in the dielectric material filled in each of the one or more through-vias by a second laser ablation process. The one or more cavities is configured to enclose one or more semiconductor dies therein. In the first laser ablation process, frequency, pulse width, and pulse energy of a first pulsed laser beam to irradiate the substrate are tuned based on a depth of the one or more features. In the second laser ablation process, frequency, pulse width, and pulse energy of a second pulsed laser beam to irradiate the dielectric material are tuned based on a depth of the via-in-via.

    STICTION-FREE DRYING PROCESS WITH CONTAMINANT REMOVAL FOR HIGH-ASPECT RATIO SEMICONDUCTOR DEVICE STRUCTURES

    公开(公告)号:US20190287823A1

    公开(公告)日:2019-09-19

    申请号:US16422477

    申请日:2019-05-24

    Abstract: Embodiments of the present disclosure generally relate to a method of cleaning a substrate. More specifically, embodiments of the present disclosure relate to a method of cleaning a substrate in a manner that reduces or eliminates the negative effects of line stiction between semiconductor device features. In an embodiment, a method of cleaning a substrate includes exposing a substrate having high aspect ratio features formed thereon to a first solvent to remove an amount of a residual cleaning solution disposed on a surface of the substrate, exposing the surface of the substrate to a second solvent to remove the first solvent disposed on the surface of the substrate, exposing the surface of the substrate to a supercritical fluid to remove the second solvent disposed on the surface of the substrate, and exposing the surface of the substrate to electromagnetic energy.

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