Invention Grant
- Patent Title: On-chip inductors
- Patent Title (中): 片上电感
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Application No.: US09754806Application Date: 2001-01-02
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Publication No.: US07173318B2Publication Date: 2007-02-06
- Inventor: Q Z Liu , Bin Zhao , David Howard
- Applicant: Q Z Liu , Bin Zhao , David Howard
- Applicant Address: US CA Newport Beach
- Assignee: Newport Fab, LLC
- Current Assignee: Newport Fab, LLC
- Current Assignee Address: US CA Newport Beach
- Agency: Farjami & Farjami LLP
- Main IPC: H01L29/00
- IPC: H01L29/00

Abstract:
Method for fabrication of on-chip inductors and related structure are disclosed. According to one embodiment, inductors are formed by patterning conductors within a certain dielectric layer in a semiconductor die. Thereafter, the entire dielectric layer in the semiconductor die is subjected to a blanket implantation or sputtering of high permeability material. According to another embodiment, a first area in a semiconductor die is covered, for example, with photoresist. A second area in the semiconductor die includes a patterned conductor which is to be used as an inductor. The patterned conductor is also covered, for example, with photoresist. The second area, excluding the covered patterned conductor, is subjected to implantation or sputtering of high permeability material. According to yet another embodiment, a first area of a semiconductor die is covered, for example, with photoresist. A second area in the semiconductor area includes a patterned conductor which is to be used as an inductor. This second area, including the patterned conductor, is subjected to implantation or sputtering of high permeability material. The implantation or sputtering of high permeability materials result in the inductors having much higher inductance values than they would otherwise have.
Public/Granted literature
- US20020011646A1 On-chip inductors Public/Granted day:2002-01-31
Information query
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