Semiconductor device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 28, 2017
Issued Date -
N/A
app pub date -
Feb 20, 2015
filing date -
Feb 20, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Provided is a semiconductor apparatus includes: a gate electrode disposed inside a trench and opposedly facing a p type base region with a gate insulating film interposed therebetween on a portion of a side wall; a shield electrode disposed inside the trench and positioned between the gate electrode and a bottom of the trench; an electric insulating region disposed inside the trench, the electric insulating region expanding between the gate electrode and the shield electrode, and further expanding along the side wall and the bottom of the trench so as to separate the shield electrode from the side wall and the bottom; a source electrode electrically connected to an n+ type source region and the shield electrode, wherein the shield electrode has a high resistance region positioned on an n+ drain region side, and a low resistance region positioned on a gate electrode side.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2015 Application Filing Year
- H01L Class
- 25498 Applications Filed
- 22451 Patents Issued To-Date
- 88.06 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- H01L Class
- 0 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | May 28, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 28, 2029 |
