PATENT CLAIM ANALYSIS

Application Number: 15974043
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-12
Patent Classification: ["257", "330000"]

Abstract:
A semiconductor device includes: an n-type drift region; a p-type base region above the drift region; a gate electrode disposed inside a trench above the drift region with a gate insulating film between the trench and the gate electrode; an n-type source region above the base region; a source electrode connected to the source region; an n-type drain region below the drift region; a drain electrode connected to the drain region; a p-type protective layer that is disposed inside the drift region and below the trench, the protective layer protruding beyond a trench width of the trench; and a p-type conductive path formation layer that is disposed between the protective layer and a bottom of the trench and protrudes beyond the trench width, the conductive path formation layer having protruding regions of which an impurity concentration therein is set so that an inversion layer is formed during ON.

Claim (Index 1):
A semiconductor device, comprising:\n a drift region of a first conductivity type made of semiconductor; a base region of a second conductivity type made of semiconductor, disposed above the drift region, wherein a trench is provided penetrating the base region and reaching the drift region; a gate insulating film disposed inside of the trench; a gate electrode embedded inside the trench with the gate insulating film interposed between the trench and the gate electrode; a first high-impurity region of the first conductivity type disposed above the base region; a second high-impurity region of the first conductivity type disposed below the drift region; a protective layer of the second conductivity type that is disposed inside the drift region below a bottom of the trench, the protective layer protruding laterally beyond a width of the trench on both sides; and a conductive path formation layer of the second conductivity type that is disposed between, and in contact with, the protective layer and the bottom of the trench, the conductive path formation layer having protruding regions that protrude laterally beyond the width of the trench on both sides, an impurity concentration of the protruding regions being such that an inversion layer is formed therein when the semiconductor device is turned on to form an inversion layer in a portion of the base region opposing to the gate electrode.

Metadata:
- Claim Count in Document: 6.0
- Percentile: 93.0
- Lexical Diversity: 2.80702
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15569636', '15560204', '15109962', '15766424', '15206884']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9281798237380724
- 35 USC 102 Novelty (BERT): 0.5048782623310365
- Combined Prediction Score: 0.8858496675973688
- Mean Citation Score: 303.874248
- Max Citation Score: 310.15298
- Similarity Product: 287.5703366143763

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