Via blocking layer
    8.
    发明授权

    公开(公告)号:US09899255B2

    公开(公告)日:2018-02-20

    申请号:US15528427

    申请日:2014-12-23

    申请人: INTEL CORPORATION

    摘要: Techniques are disclosed for insulating or electrically isolating select vias within a given interconnect layer, so a conductive routing can skip over those select isolated vias to reach other vias or interconnects in that same layer. Such a via blocking layer may be selectively implemented in any number of locations within a given interconnect as needed. Techniques for forming the via blocking layer are also provided, including a first methodology that uses a sacrificial passivation layer to facilitate selective deposition of insulator material that form the via blocking layer, a second methodology that uses spin-coating of wet-recessible polymeric formulations to facilitate selective deposition of insulator material that form the via blocking layer, and a third methodology that uses spin-coating of nanoparticle formulations to facilitate selective deposition of insulator material that form the via blocking layer. Harmful etching processes typically associated with conformal deposition processes is avoided.

    PATTERNING BASED ON IN-SITU FORMATION OF BLOCK COPOYLMER THROUGH DEPROTECTION

    公开(公告)号:US20240222119A1

    公开(公告)日:2024-07-04

    申请号:US18147107

    申请日:2022-12-28

    申请人: Intel Corporation

    IPC分类号: H01L21/027 H01L21/02

    摘要: In-situ formation of a block copolymer through deprotection can provide patterns with flexible pitches. A layer of a protected polymer including a protecting group is formed. One or more portions of the layer may be exposed to light. The exposed portion(s) may be baked after the light exposure. The protecting group is removed after the light exposure or bake so that the protected polymer becomes a deprotected polymer in the exposure portion(s). The deprotected polymer is bonded with the protected polymer in the unexposed portion(s) of the layer but has a different solubility from the protected polymer so that phases of the block copolymer are separated. The phase separation can provide a periodic pattern with various pitches. The solution and roughness of the pattern can be enhanced by using CARs formed with a protected, cross-linked polymer that includes a protective group and a function group with a ratio of 50:50.