公开(公告)号：US20210280463A1

公开(公告)日：2021-09-09

申请号：US16809905

申请日：2020-03-05

Applicant: INTEL CORPORATION

Inventor： Jeremy Ecton ,  Brandon C. Marin ,  Leonel Arana ,  Matthew Tingey ,  Oscar Ojeda ,  Hsin-Wei Wang ,  Suddhasattwa Nad ,  Srinivas Pietambaram ,  Gang Duan

IPC: H01L21/768 ,  H01L23/528 ,  H01L23/532

Abstract: A conductive route for an integrated circuit assembly may be formed using a sequence of etching and passivation steps through layers of conductive material, wherein the resulting structure may include a first route portion having a first surface, a second surface, and at least one side surface extending between the first surface and the second surface, an etch stop structure on the first route portion, a second route portion on the etch stop layer, wherein the second route portion has a first surface, a second surface, and at least one side surface extending between the first surface and the second surface, and a passivating layer abutting the at least one side surface of the second route portion.