PATENT CLAIM ANALYSIS

Application Number: 16022633
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2019-01
Patent Classification: ["257", "077000"]

Abstract:
In a termination structure region, a first semiconductor layer of a first conductivity type, with an impurity concentration lower than that of a semiconductor substrate, is provided on the substrate of the first conductivity type. A second semiconductor layer of a second conductivity type is provided on a first side of the first semiconductor layer, opposite to a second side facing the substrate. Trenches penetrate the second semiconductor layer. At the first side in the first semiconductor layer, a first semiconductor region of the second conductivity type, with an impurity concentration higher than that of the second semiconductor layer, is provided at a side closer to an active region, contacting the second semiconductor layer. A second semiconductor region of the first conductivity type is provided in the second semiconductor layer, outside and adjacent to one of the trenches that is disposed at a farthest position from the active region.

Claim (Index 7):
A method of manufacturing a semiconductor device having an active region through which current flows, and a termination structure region disposed outside the active region and in which a termination structure is formed, the method comprising:\n forming a first semiconductor layer of a first conductivity type on a front surface of a semiconductor substrate of the first conductivity type, the first semiconductor layer having an impurity concentration lower than an impurity concentration of the semiconductor substrate; forming a first semiconductor region of a second conductivity type at the termination structure region, the first semiconductor region being formed in the first semiconductor layer at a first side thereof, the first side being opposite to a second side of the first semiconductor layer, the second side facing the semiconductor substrate; forming a second semiconductor layer of the second conductivity type on the first side of the first semiconductor layer; forming a second semiconductor region of the first conductivity type in the second semiconductor layer at the termination structure region, at a position separated from the active region, the first semiconductor region being formed at a position closer to the active region than is the second semiconductor region; and forming a trench in a region in which the first semiconductor region is not formed, the trench penetrating the second semiconductor layer.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 94.0
- Lexical Diversity: 3.32653
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15669168', '15800884', '15581021', '16022606', '15846040']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9348281064034576
- 35 USC 102 Novelty (BERT): 0.5356375500382983
- Combined Prediction Score: 0.8949090507669416
- Mean Citation Score: 367.742286
- Max Citation Score: 382.24800000000016
- Similarity Product: 328.37024909591685

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