PATENT CLAIM ANALYSIS

Application Number: 15906889
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-07
Patent Classification: ["257", "143000"]

Abstract:
To achieve a semiconductor device equipped with a low ON voltage and high load short circuit withstand trench gate IGBT. A collector region on a back surface of a semiconductor substrate is comprised of a relatively lightly-doped P +  type first collector region and a relatively heavily-doped P ++  type second collector region. The P ++  type second collector region includes, in plan view, interfaces between a first trench having therein a first linear trench gate electrode and an N +  type emitter region formed on the side surface of the first trench and between a second trench having therein a second linear trench gate electrode and an N +  type emitter region formed on the side surface of the second trench. This enables electrons injected from the surface side of the semiconductor substrate to reach the P ++  type second collector region and offset, with them, holes injected from the back surface side of the semiconductor substrate.

Claim (Index 4):
The method of manufacturing a semiconductor device according to  claim 1 ,\n wherein by grinding in the step (g), the thickness of the semiconductor substrate is reduced to from 30 to 200 \u03bcm.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 88.0
- Lexical Diversity: 2.47761
- Patent Class: 257.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15180988', '14715648', '15138687', '15798209', '15390491']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9323785574679494
- 35 USC 102 Novelty (BERT): 0.5671366474211282
- Combined Prediction Score: 0.8958543664632673
- Mean Citation Score: 394.932166
- Max Citation Score: 481.6934
- Similarity Product: 319.89097493447065

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