Invention Grant
- Patent Title: Thin film resistor methods of making contacts
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Application No.: US15446079Application Date: 2017-03-01
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Publication No.: US10347710B2Publication Date: 2019-07-09
- Inventor: Purakh Raj Verma , Kemao Lin
- Applicant: GLOBALFOUNDRIES Singapore Pte. Ltd.
- Applicant Address: SG Singapore
- Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
- Current Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
- Current Assignee Address: SG Singapore
- Agency: Ditthavong & Steiner, P.C.
- Main IPC: H01L49/02
- IPC: H01L49/02 ; H01L21/768 ; H01L21/3205 ; H01L23/522 ; H01L23/532

Abstract:
A method for forming a thin film resistor (TFR) without via penetration and the resulting device are provided. Embodiments include forming a first ILD over a substrate; forming a second ILD over the first ILD; forming a first metal layer in the second ILD; forming a first nitride layer over the second ILD and the first metal layer; forming a third ILD over the first nitride layer; forming vias through the third ILD and the first nitride layer, coupled to the first metal layer; forming a TFR layer over two of the vias and the third ILD between the two vias; forming a second nitride layer over the TFR layer and the third ILD; forming a fourth ILD over the second nitride layer; and forming a second metal layer in the fourth ILD and the second nitride layer.
Public/Granted literature
- US20180254315A1 THIN FILM RESISTOR METHODS OF MAKING CONTACTS Public/Granted day:2018-09-06
Information query
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