PATENT CLAIM ANALYSIS

Application Number: 15936723
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-10
Patent Classification: ["257", "139000"]

Abstract:
A semiconductor device having a first surface formed at a first height and a second surface formed at a second height on a semiconductor substrate includes: a base region formed in the semiconductor substrate; a trench formed from the first surface and the second surface into the semiconductor substrate; a gate insulating film covering an inner side of the trench; a gate electrode embedded to a third height; an insulating film formed on the gate electrode; a first region which has the first surface and in which a base contact region is formed; and a second region which has the second surface and in which a source region is formed, the first region and the second region being alternately arranged in the trench extension direction to prevent a reduction in channel formation density.

Claim (Index 1):
A semiconductor device, comprising:\n a semiconductor substrate having a first surface formed at a first height and a second surface formed at a second height different from the first height; a first electrode formed on the first surface and the second surface in a contact manner; and a second electrode formed on a back surface of the semiconductor substrate in a contact manner, the semiconductor substrate comprising:\n a back surface semiconductor electrode layer of a first conductivity type formed so as to have a predetermined thickness from the back surface of the semiconductor substrate; \n a base region of a second conductivity type formed on the back surface semiconductor electrode layer; \n a trench having a depth from the first surface and the second surface to an upper surface of the back surface semiconductor electrode layer; \n a gate insulating film formed on a side surface and a bottom surface of the trench below a third height positioned between the second surface and the bottom surface of the trench; \n a gate electrode embedded into the trench to the third height along the gate insulating film; \n an insulating film formed on the gate insulating film and the gate electrode inside the trench, and having an upper surface positioned at any higher position of the first height and the second height; and \n a first region and a second region alternately arranged along the trench and have the first surface and the second surface, respectively, \n the first region having a base contact region of the second conductivity type which includes a portion in contact with the base region and a portion in contact with the first electrode, and which has a concentration higher than a concentration of the base region, the second region having a source region which includes a portion in contact with the base region, a portion along an outer side surface of the trench from the second surface to the third height, and a portion in contact with the first electrode.

Metadata:
- Claim Count in Document: 11.0
- Percentile: 90.0
- Lexical Diversity: 2.67925
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15874342', '15825896', '15816481', '15226913', '14768116']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9235117315266186
- 35 USC 102 Novelty (BERT): 0.4983112477486031
- Combined Prediction Score: 0.880991683148817
- Mean Citation Score: 254.812524
- Max Citation Score: 285.3052
- Similarity Product: 247.0344413203001

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