PATENT CLAIM ANALYSIS

Application Number: 15936425
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-08
Patent Classification: ["257", "143000"]

Abstract:
A semiconductor device of the present invention is structured such that in a surface layer of a first principal surface of a semiconductor substrate, an n-type drift layer, a p-type base layer, a p-type floating layer, an n-type emitter layer, an emitter electrode, and a trench in which a gate electrode is embedded with a gate insulating film is disposed therebetween are formed from a front surface side. Further, in a surface layer of a second principal surface of the semiconductor substrate, a p-type collector layer and a collector electrode contacting the-type collector layer are formed, and in a direction from the p-type collector layer toward a surface, an n-type selenium-doped field stop layer and an n-type proton doped field stop layer are formed, whereby IGBT turn OFF oscillation, oscillation at diode reverse recovery, and increases in leak voltage can be suppressed, and electrical loss can be reduced.

Claim (Index 3):
The semiconductor device according to  claim 2 , wherein\n doping concentration distribution of the first field stop layer is adjusted so as to intersect the doping concentration of selenium in the second field stop layer, at a position indicating a doping concentration that is lower than 0.5 Np, which is half of a highest doping concentration Np.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 90.0
- Lexical Diversity: 2.24658
- Patent Class: 257.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15173763', '14079072', '15084549', '14260490', '15070429']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9306827020788796
- 35 USC 102 Novelty (BERT): 0.5171186385059395
- Combined Prediction Score: 0.8893262957215855
- Mean Citation Score: 277.269488
- Max Citation Score: 329.392
- Similarity Product: 297.85209621620174

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

Dataset: test