PATENT CLAIM ANALYSIS

Application Number: 15983060
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-09
Patent Classification: ["257", "331000"]

Abstract:
To provide a semiconductor device having a structure capable of forming a superjunction with less thermal history, a semiconductor device is provided, the semiconductor device including a contact trench formed between two gate trenches, penetrating through a source region, and including its lower end arranged in a base region, and a second conductivity-type protruding portion formed protruding toward a lower side from the lower end of the base region in a region opposite to the lower end of the contact trench, wherein the depth from the upper end of the source region to a lower end of the protruding portion is 3 μm or more, and a carrier concentration Nd in a first conductivity-type region adjacent to the protruding portion in a lateral direction perpendicular to a depth direction and a carrier concentration Na of the protruding portion satisfy a predetermined equation.

Claim (Index 5):
The method according to  claim 1 , further comprising implanting impurities from the lower end of the gate trench into the drift region to form a first conductivity-type region adjacent to the lower end of the gate trench and the protruding portion, having an impurity concentration higher than that of the drift region.

Metadata:
- Claim Count in Document: 9.0
- Percentile: 93.0
- Lexical Diversity: 2.23881
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15974043', '15505267', '14909407', '11819677', '15252623']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9170287964264344
- 35 USC 102 Novelty (BERT): 0.5012511732532836
- Combined Prediction Score: 0.8754510341091192
- Mean Citation Score: 226.103238
- Max Citation Score: 237.21175
- Similarity Product: 156.71798989829418

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test