PATENT CLAIM ANALYSIS

Application Number: 15919475
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2019-09
Patent Classification: ["257", "476000"]

Abstract:
A Schottky device includes a plurality of mesa structures where one or more of the mesa structures includes a doped region having a multi-concentration dopant profile. In accordance with an embodiment, the Schottky device is formed from a semiconductor material of a first conductivity type. Trenches having sidewalls and floors are formed in the semiconductor material to form a plurality of mesa structures. A doped region having a multi-concentration impurity profile is formed in at least one trench, where the impurity materials of the doped region having the multi-concentration impurity profile are of a second conductivity type. A Schottky contact is formed to at least one of the mesa structures having the dope region with the multi-concentration impurity profile.

Claim (Index 18):
A method for manufacturing a semiconductor material, comprising:\n providing a semiconductor material of a first conductivity type having first and second major surfaces; forming first, second, and third trenches in the semiconductor material, wherein a first portion of the semiconductor material is between the first and second trenches and a second portion of the semiconductor material is between the second and third trenches; forming a first dielectric material in the first trench, a second dielectric material in the second trench, and a third dielectric material in the third trench; forming a first polysilicon over the first dielectric material in the first trench, a second polysilicon over the first dielectric material in the second trench, and a third polysilicon over the third dielectric material in the third trench; forming first doped region of a second conductivity type in a first portion of the semiconductor material, the first portion of the semiconductor material between the first trench and the second trench; performing a blanket doping of the first portion of the semiconductor material and a second portion of the semiconductor material with an impurity material of the second conductivity type, the second portion of the semiconductor material between the second trench and the third trench to form a first multi-concentration doped region from the first portion of the semiconductor material; removing at least a portion of the semiconductor material that is between the second trench and the third trench, wherein removing the at least a portion of the semiconductor material between the second trench and the third trench removes a portion of the impurity material of the second conductivity type that is between the second trench and the third trench; forming a first silicide layer from the first multi-concentration doped region that is between the first trench and the second trench; forming a second silicide layer from the portion of the semiconductor material between the second trench and the third trench; forming a third silicide layer from the first polysilicon in the first trench; and forming a first electrically conductive layer over the first silicide layer, the second silicide layer, and the third silicide layer, the first electrically conductive layer having a first portion that contacts the first silicide layer, a second portion that contacts the second silicide layer, and a third portion that contacts the third silicide layer wherein the first silicide layer and the first portion of the first electrically conductive layer form a first multi-concentration contact portion that has electrical properties between a conventional Schottky contact and a conventional Ohmic contact without being a conventional Schottky contact or a conventional Ohmic contact, the second portion of the first electrically conductive layer and the second silicide layer form a Schottky contact, and the third portion of the electrically conductive layer form a first Ohmic contact portion.

Metadata:
- Claim Count in Document: 41.0
- Percentile: 90.0
- Lexical Diversity: 2.47059
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15657286', '14160273', '15040650', '14181207', '12206570']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9327317629774572
- 35 USC 102 Novelty (BERT): 0.5424900376793789
- Combined Prediction Score: 0.8937075904476492
- Mean Citation Score: 357.07805
- Max Citation Score: 396.50867
- Similarity Product: 363.0180508489508

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

Dataset: test