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 10):
A method of manufacturing a semiconductor device, comprising:\n forming a drift region of first conductivity type and a well region of second conductivity type in a main surface of a semiconductor substrate, the drift region and the well region forming a pn junction; forming an isolation trench in the main surface of the semiconductor substrate; and forming a source region of first conductivity type and a drain region of first conductivity type in the main surface, the source region sandwiching the well region between the isolation trench and the source region and forming a pn junction together with the well region, the drain region sandwiching the isolation trench between the source region and the drain region and having an impurity concentration higher than an impurity concentration of the drift region, the isolation trench being formed such that the pn junction formed of the well region and the drift region extends 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): 0.8969841127358283
- 35 USC 102 Novelty (BERT): 0.5213526662200954
- Combined Prediction Score: 0.859420968084255
- Mean Citation Score: 221.29619
- Max Citation Score: 312.14893
- Similarity Product: 242.7045480913568

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