PATENT CLAIM ANALYSIS

Application Number: 15888944
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-10
Patent Classification: ["257", "077000"]

Abstract:
In a vertical power MOSFET having a superjunction structure, the withstand voltage of the power MOSFET can be ensured even if the aspect ratios of an n-type column region and a p-type column region are increased so as to vary the impurity concentration of the p-type column region. P-type semiconductor regions PR 1  are formed on the sides of an n-type column NC 1  adjacent to a p-type column region PC 1 . In this configuration, the p-type semiconductor region PR 1  is formed from the upper end of the n-type column region NC 1  to about a half depth of a height from the upper end to the lower end of the side of the n-type column region NC 1 . This inclines the sides of the overall p-type column region including the p-type semiconductor regions PR 1  and the p-type column region PC 1.

Claim (Index 10):
The method of manufacturing a semiconductor device according to  claim 8 , further comprising the step of:\n (b2) after the step (a), forming a third semiconductor region of the second conductivity type over the side of the first groove by implanting the impurity of the second conductivity type opposite to the first conductivity type to the side of the first groove diagonally at a third angle with respect to the top surface of the semiconductor layer before the step (c),\n wherein the first angle is closer to a right angle with respect to the top surface of the semiconductor layer than the third angle, \n wherein the third semiconductor region has a larger depth than the first semiconductor region, and \n wherein the third semiconductor region has a larger width than the first semiconductor region in a first direction along which the first and second pillars are arranged.

Metadata:
- Claim Count in Document: 13.0
- Percentile: 88.0
- Lexical Diversity: 2.41935
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15869023', '14965899', '14826075', '15640375', '15355469']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.921679817165328
- 35 USC 102 Novelty (BERT): 0.5012556249308722
- Combined Prediction Score: 0.8796373979418823
- Mean Citation Score: 249.31818
- Max Citation Score: 261.54218
- Similarity Product: 193.6568246729421

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