PATENT CLAIM ANALYSIS

Application Number: 15927693
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-07
Patent Classification: ["257", "330000"]

Abstract:
Devices, structures, and methods thereof for providing a Schottky or Schottky-like contact as a source region and/or a drain region of a power transistor are disclosed. A power transistor structure comprises a substrate of a first dopant polarity, a drift region formed on or within the substrate, a body region formed on or within the drift region, a gate structure formed on or within the substrate, a source region adjacent to the gate structure, a drain region formed adjacent to the gate structure. At least one of the source region and the drain region is formed from a Schottky or Schottky-like contact substantially near a surface of the substrate, comprising a silicide layer and an interfacial dopant segregation layer. The Schottky or Schottky-like contact is formed by low-temperature annealing a dopant segregation implant in the source and/or drain region.

Claim (Index 18):
A vertical trench power transistor structure, comprising:\n a substrate of a first dopant polarity including a conducting layer; a drift region of a first dopant polarity formed on or within the substrate; a body region of a second dopant polarity formed within the drift region; a vertical gate structure in the substrate; a gate dielectric film on the sidewall of the vertical gate structure; a gate structure abutting the gate dielectric film; a source region outside the gate structure; a drain region formed within or on a top surface or a bottom surface of the substrate; wherein the source region is a Schottky or Schottky-like contact formed substantially near a surface of the substrate to reduce or eliminate snapback of the vertical trench power transistor structure for immunity of failures under unclamped inductive switching events; wherein the Schottky or Schottky-like contact is a rectifying barrier junction between the substrate and the conducting layer.

Metadata:
- Claim Count in Document: 65.0
- Percentile: 90.0
- Lexical Diversity: 2.51667
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15581768', '12014581', '13196324', '12213628', '12213629']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.912859071381584
- 35 USC 102 Novelty (BERT): 0.5947261956204508
- Combined Prediction Score: 0.8810457838054706
- Mean Citation Score: 351.04381
- Max Citation Score: 520.41315
- Similarity Product: 437.1976244073987

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