Invention Grant
- Patent Title: Selective recessing to form a fully aligned via
-
Application No.: US17571814Application Date: 2022-01-10
-
Publication No.: US11837501B2Publication Date: 2023-12-05
- Inventor: Benjamin D. Briggs , Jessica Dechene , Elbert Huang , Joe Lee , Theodorus E. Standaert
- Applicant: Adeia Semiconductor Solutions LLC
- Applicant Address: US CA San Jose
- Assignee: TESSERA LLC
- Current Assignee: TESSERA LLC
- Current Assignee Address: US CA San Jose
- Agency: HALEY GUILIANO LLP
- The original application number of the division: US15229470 2016.08.05
- Main IPC: H01L21/768
- IPC: H01L21/768 ; H01L23/522 ; H01L23/528 ; H01L23/532

Abstract:
A method of forming a semiconductor device having a vertical metal line interconnect (via) fully aligned to a first direction of a first interconnect layer and a second direction of a second interconnect layer in a selective recess region by forming a plurality of metal lines in a first dielectric layer; and recessing in a recess region first portions of the plurality of metal lines such that top surfaces of the first portions of the plurality of metal lines are below a top surface of the first dielectric layer; wherein a non-recess region includes second portions of the plurality of metal lines that are outside the recess region.
Public/Granted literature
- US20220181205A1 SELECTIVE RECESSING TO FORM A FULLY ALIGNED VIA Public/Granted day:2022-06-09
Information query
IPC分类: