PATENT CLAIM ANALYSIS

Application Number: 15749190
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-08
Patent Classification: ["257", "077000"]

Abstract:
A silicon carbide semiconductor device includes: a drift layer in contact with a first main surface and having a first conductivity type; a body region located in the drift layer, in contact with the first main surface, and having a second conductivity type; and a protruding portion having the second conductivity type and connected to a bottom of the body region. A manufacturing method includes forming, in the drift layer of a silicon carbide substrate, by ion implantation, the body region, the protruding portion, a JTE region, and at least one guard ring region, each having the second conductivity type.

Claim (Index 1):
A silicon carbide semiconductor device comprising\n a silicon carbide substrate having a first main surface and a second main surface located opposite to the first main surface, the silicon carbide substrate including\n a first impurity region in contact with the first main surface and having a first conductivity type, \n a second impurity region located in the first impurity region, in contact with the first main surface, and having a second conductivity type different from the first conductivity type, \n a third impurity region having the second conductivity type and connected to a bottom of the second impurity region, \n an electric field relaxing region having the second conductivity type, located adjacent to the second impurity region, and having an impurity concentration lower than an impurity concentration in the third impurity region, and \n at least one guard ring region having the second conductivity type, located opposite to the second impurity region with the electric field relaxing region interposed therebetween, and having an impurity concentration lower than the impurity concentration in the third impurity region, \n the silicon carbide semiconductor device further comprising: an oxide film located on the first main surface of the silicon carbide substrate, and having an opening to expose the second impurity region; a first electrode electrically connected to the second impurity region through the opening; and a second electrode electrically connected to the second main surface of the silicon carbide substrate.

Metadata:
- Claim Count in Document: 18.0
- Percentile: 86.0
- Lexical Diversity: 2.375
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14946465', '14692458', '14651985', '14638497', '14439612']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9288191654456012
- 35 USC 102 Novelty (BERT): 0.5165491027955064
- Combined Prediction Score: 0.8875921591805918
- Mean Citation Score: 314.636492
- Max Citation Score: 331.9625200000001
- Similarity Product: 286.09044919847264

Labels:
- Claim Label 101: 1
- Claim Label 102: 0
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 0
- Label 101 Adjusted: 1

Dataset: test