PATENT CLAIM ANALYSIS

Application Number: 16360775
Application Type: Utility
Filing Date: 2019-03
Publication Date: 2019-07
Patent Classification: ["257", "077000"]

Abstract:
A semiconductor device of the present invention includes a gate electrode buried in a gate trench of a first conductivity-type semiconductor layer, a first conductivity-type source region, a second conductivity-type channel region, and a first conductivity-type drain region formed in the semiconductor layer, a second trench selectively formed in a source portion defined in a manner containing the source region in the surface of the semiconductor layer, a trench buried portion buried in the second trench, a second conductivity-type channel contact region selectively disposed at a position higher than that of a bottom portion of the second trench in the source portion, and electrically connected with the channel region, and a surface metal layer disposed on the source portion, and electrically connected to the source region and the channel contact region.

Claim (Index 30):
A semiconductor device comprising:\n a semiconductor layer of a first conductivity type formed with a first trench; a gate electrode buried in the first trench via an insulating film; a source region of the first conductivity type disposed in a manner exposed on a surface of the semiconductor layer and contacting a first part of a side face of the first trench; a channel region of a second conductivity type disposed on the source region on a back surface side relative to the semiconductor layer, in a manner contacting the source region and a second part of the side face of the first trench; a drain region of the first conductivity type disposed on the channel region on the back surface side relative to the semiconductor layer, in a manner contacting the channel region and a bottom face of the first trench; an active region that forms a channel in the channel region to perform a transistor operation; an outer peripheral region disposed around the active region, and a surface insulating film disposed above the semiconductor layer, and the surface insulating film has a first portion that is disposed in the active region and a second portion that is disposed in the outer peripheral region, and the first portion of the surface insulating film is thinner than the second portion of the surface insulating film, wherein in the surface insulating film, a contact hole that selectively exposes the source region is formed substantially over the entire surface of the semiconductor layer.

Metadata:
- Claim Count in Document: 29.0
- Percentile: 99.0
- Lexical Diversity: 3.06522
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14768116', '15726026', '14771457', '15412785', '14771399']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.930384901265444
- 35 USC 102 Novelty (BERT): 0.531084690039306
- Combined Prediction Score: 0.8904548801428303
- Mean Citation Score: 340.75697
- Max Citation Score: 367.68768
- Similarity Product: 355.0872027484132

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