PATENT CLAIM ANALYSIS

Application Number: 15754599
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-08
Patent Classification: ["257", "330000"]

Abstract:
A semiconductor device in which an interlayer insulation film covers striped gate electrodes with a thickness larger than a thickness of a gate oxide film. The interlayer insulation film includes first contact holes outside each striped trench, and second contact holes inside the striped trench. In a plan view, striped active regions and striped contact regions both extending in a longitudinal direction exist. The striped active regions and the striped contact regions are alternately and repeatedly disposed in a direction perpendicular to the longitudinal direction. In each of the striped active regions, the source electrode is connected to a source region through the first contact hole. In each of the striped contact regions, the source electrode is connected to a protective diffusion layer through the second contact hole.

Claim (Index 23):
A semiconductor device, comprising:\n a drift layer of a first conductivity type; a base region of a second conductivity type formed on the drift layer; a source region of the first conductivity type formed on the base region, the source region being separated from the drift layer by the base region; a plurality of striped trenches each having, in a cross-sectional view, a pair of sidewalls penetrating the source region and the base region to reach the drift layer, the plurality of striped trenches extending in stripes in a plan view; a protective diffusion layer of the second conductivity type formed at a bottom of each of the striped trenches, the protective diffusion layer being in contact with the drift layer; a gate insulating film formed adjacent to the pairs of the sidewalls of the striped trenches to cover the base region and the source region; striped gate electrodes each having a first side surface, a second side surface, and an upper surface in each of the striped trenches, the first side surface being adjacent to the base region through the gate insulating film, the second side surface being opposite to the first side surface, and the upper surface connecting the first side surface to the second side surface; an interlayer insulation film covering the second side surfaces and the upper surfaces of the striped gate electrodes with a thickness larger than a thickness of the gate oxide film, the interlayer insulation film including first contact holes connected to the source region and the base region outside each of the striped trenches, and second contact holes connected to the protective diffusion layer inside the striped trenches; and a source electrode connected to the source region, the base region, and the protective diffusion layer, wherein in the plan view, a plurality of striped active regions and a plurality of striped contact regions both extending in a longitudinal direction exist, and a striped pattern is provided by alternately and repeatedly disposing the striped active regions and the striped contact regions in a direction perpendicular to the longitudinal direction, the striped active regions and the striped contact regions being partitioned by the striped gate electrodes, the source electrode is connected to the source region and the base region through the first contact holes of the interlayer insulation film in each of the striped active regions, and each of the striped gate electrodes forms a switchable channel with the first side surface being adjacent to the base region through the gate insulating film in a corresponding one of the striped trenches, the source electrode is connected to the protective diffusion layer through the second contact holes of the interlayer insulation film in each of the striped contact regions, a first row and a second row in each of which the striped active regions and the striped contact regions are alternately and repeatedly disposed exist, the striped active regions in the first row are facing the striped contact regions in the second row in the longitudinal direction, and the striped contact regions in the first row are facing the striped active regions in the second row in the longitudinal direction.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 88.0
- Lexical Diversity: 2.3
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15569636', '12257175', '15505508', '14930373', '13992574']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9133344584653088
- 35 USC 102 Novelty (BERT): 0.5103358000701032
- Combined Prediction Score: 0.8730345926257882
- Mean Citation Score: 293.929656
- Max Citation Score: 305.0639
- Similarity Product: 279.4528815832198

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