← Back to Patent Explorer
US5272369A Expired / Lapsed US ⏱️ 0.0 years remaining

Circuit element with elimination of kink effect

Assignee: Imec
•
Filing: 1992-05-29
•
Granted: 1993-12-21
•
Expires: 2012-05-29
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A circuit element which includes a source region of a first conductance type provided with a source terminal, an intermediate region of the first conductance type separated from the source region by a first volume, a first channel region portion of a second conductance type provided with a first gate terminal and occupying the first volume, a drain region of the first conductance type provided with a drain terminal and separated from the intermediate region by a second volume, a second channel region portion of the second conductance type provided with a second gate terminal conductively connected to the first gate terminal and occupying said second volume, and an oxide layer. The first channel region portion, the intermediate region, and the second channel region portion are deposited on one face of the oxide layer. The design of the circuit element reduces adverse consequences of the so-called Kink effect, to which other circuit elements have been subject.

Inventors

  • 👤 Jean P. Colinge
  • 👤 Ming H. Gao

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 10:09
CPC Classifications
H; H10; H10D; H10D30/00; H10D30/60; H10D30/67; H10D30/6729; H10D30/673; H10D30/6733; H10D30/6704; H10D30/6708; H10D30/6734; H10D30/674

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 145 words
A circuit element comprising: a source region of a first conductance type, provided with a source terminal; an intermediate region of the first conductance type, separated from the source region by a first volume; a first channel region portion of a second conductance type opposed to the first conductance type, provided with a first gate terminal, and occupying the first volume; a drain region of the first conductance type provided with a drain terminal, and separated from the intermediate region by a second volume; a second channel region portion of the second conductance type provided with a second gate terminal conductively connected to the first gate terminal, and occupying said second volume; and an oxide layer having a first face, wherein the first channel region portion, the intermediate region, and the second channel region portion, are deposited on the first face of the oxide layer.
Claim 2
Dependent Claim 145 words
A circuit element comprising: a source region of a first conductance type, provided with a source terminal; an intermediate region of the first conductance type, separated from the source region by a first volume; a first channel region portion of a second conductance type opposed to the first conductance type, provided with a first gate terminal, and occupying the first volume; a drain region of the first conductance type provided with a drain terminal, and separated from the intermediate region by a second volume; a second channel region portion of the second conductance type provided with a second gate terminal conductively connected to the first gate terminal, and occupying said second volume; and an oxide layer having a first face, wherein the first channel region portion, the intermediate region, and the second channel region portion, are deposited on the first face of the oxide layer.
Claim 3
Dependent Claim 27 words
A circuit element as claimed in claim 1, wherein the second channel region portion has a channel length greater than that of the first channel region portion.
Claim 4
Dependent Claim 37 words
A circuit element as claimed in claim 1, wherein the width-to-length ration, W/L, of the first channel region portion is substantially equal to 50/2 and that of the second channel region portion is substantially equal to 50/1.
Claim 5
Dependent Claim 33 words
The circuit element of claim 1, wherein the oxide layer has a second face opposite the first face, and also including a control terminal connected to the second face of the oxide layer.
Claim 6
Dependent Claim 25 words
A circuit element as claimed in claim 1, wherein each of the first channel region portion and the second channel region portion comprises an n-channel.
Claim 7
Dependent Claim 25 words
The circuit element of claim 5, wherein the second channel region portion has a channel length greater than that of the first channel region portion.

References Cited (Backward Citations)

US3328601A Cited
US3427514A Cited
US3436622A Cited
US3658586A Cited
US3872491A Cited
US4635088A Cited
JPS5887875A Cited
US4748485A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1996-12-20 1997-06-21 1997-12-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2000-12-20 2001-06-21 2001-12-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2004-12-20 2005-06-21 2005-12-21 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag