PATENT CLAIM ANALYSIS

Application Number: 16066777
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2019-01
Patent Classification: ["257", "077000"]

Abstract:
A silicon carbide semiconductor device includes: an n-type drift layer 2 provided within an SiC layer  30;  a plurality of p-type well regions  3;  a JFET region JR serving as a part of the drift layer  2  sandwiched between the well regions  3;  and a gate insulating film  6  and a gate electrode  7  at least covering the JFET region JR. The gate insulating film  6  and the gate electrode  7  include a different-element-containing region  10  containing an element that is different from elements constituting the gate insulating film  6  and the gate electrode  7.

Claim (Index 19):
A method for manufacturing a silicon carbide semiconductor device comprising:\n forming a drift layer of a first conductivity type in a silicon carbide layer; selectively forming a plurality of well regions of a second conductivity type in an upper layer part of the silicon carbide layer, the second conductivity type being different from the first conductivity type; selectively forming a source region of the first conduction type within each of the plurality of well regions; forming an insulating film on the silicon carbide layer so as to cover a JFET region serving as a part of the drift layer sandwiched between the plurality of well regions; forming an electrode on the insulating film so as to cover the JFET region; and ion-implanting, into the electrode, a different element that is different from elements constituting the insulating film and the electrode, wherein the different element is ion-implanted into a part above the JFET region in the electrode and is not ion-implanted into a part above a channel region.

Metadata:
- Claim Count in Document: 8.0
- Percentile: 94.0
- Lexical Diversity: 1.80357
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['16307184', '16307088', '15768251', '15766424', '14650718']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9281625697793714
- 35 USC 102 Novelty (BERT): 0.5235841100689391
- Combined Prediction Score: 0.8877047238083281
- Mean Citation Score: 315.52239
- Max Citation Score: 347.4639
- Similarity Product: 284.18937832582003

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test