PATENT CLAIM ANALYSIS

Application Number: 15971130
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-11
Patent Classification: ["257", "335000"]

Abstract:
A first comb portion of an n-type well region and a second comb portion of a p −  drift region mesh with each other in plan view. A pn junction of the n-type well region and the p −  drift region thus has a zigzag shape in plan view. The pn junction formed of the n-type well region and the p −  drift region extends from a main surface toward a bottom surface of the isolation trench along a source-side wall surface of an isolation trench.

Claim (Index 1):
A semiconductor device comprising:\n a semiconductor substrate having a main surface, the main surface having an isolation trench; a source region of first conductivity type which is disposed in the main surface of the semiconductor substrate; a drain region of first conductivity type which is disposed in the main surface and sandwiches the isolation trench between the source region and the drain region; a drift region of first conductivity type which is disposed below the isolation trench and has an impurity concentration lower than an impurity concentration of the drain region; and a well region of second conductivity type which is disposed in the main surface between the source region and the isolation trench and forms a pn junction together with the drift region, the pn junction formed of the well region and the drift region extending from the main surface toward a bottom surface of the isolation trench along a lateral surface of the isolation trench on a side of the source region.

Metadata:
- Claim Count in Document: 10.0
- Percentile: 93.0
- Lexical Diversity: 2.06977
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15847342', '14403225', '15727400', '13965559', '14605027']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8970844510134942
- 35 USC 102 Novelty (BERT): 0.5189514819922523
- Combined Prediction Score: 0.85927115411137
- Mean Citation Score: 221.29619
- Max Citation Score: 312.14893
- Similarity Product: 258.8738293837917

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