PATENT CLAIM ANALYSIS

Application Number: 16505411
Application Type: Utility
Filing Date: 2019-07
Publication Date: 2019-10
Patent Classification: ["257", "329000"]

Abstract:
A VFET device with a dual top spacer to prevent source/drain-to-gate short, and techniques for formation thereof are provided. In one aspect, a method of forming a VFET device includes: etching vertical fin channels in a substrate; forming a bottom source and drain in the substrate beneath the vertical fin channels; forming a bottom spacer on the bottom source and drain; depositing a gate dielectric and gate conductor onto the vertical fin channels; recessing the gate dielectric and gate conductor to expose tops of the vertical fin channels; selectively forming dielectric spacers on end portions of the gate dielectric and gate conductor adjacent to the tops of the vertical fin channels; depositing an encapsulation layer onto the vertical fin channels; recessing the encapsulation layer with the dielectric spacers serving as an etch stop; and forming top source and drains. A VFET device formed using the present techniques is also provided.

Claim (Index 13):
A VFET, comprising:\n vertical fin channels extending partway through a substrate; a bottom source and drain in the substrate beneath the vertical fin channels; a bottom spacer on the bottom source and drain; a conformal gate dielectric along sidewalls the vertical fin channels; a conformal gate conductor on the conformal gate dielectric; a metal protection layer on the conformal gate conductor; dielectric spacers on end portions of the conformal gate dielectric and the conformal gate conductor adjacent to tops of the vertical fin channels, wherein the metal protection layer and the dielectric spacers form a dual spacer on the end portions of the conformal gate dielectric and the conformal gate conductor; an encapsulation layer over the conformal gate dielectric, the conformal gate conductor and the dielectric spacers; and top source and drains on the tops of the vertical fin channels.

Metadata:
- Claim Count in Document: 4.0
- Percentile: 100.0
- Lexical Diversity: 2.41176
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15791095', '15843318', '15833543', '15863000', '15994720']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9377221235230369
- 35 USC 102 Novelty (BERT): 0.613927935537388
- Combined Prediction Score: 0.905342704724472
- Mean Citation Score: 461.10919400000006
- Max Citation Score: 629.39825
- Similarity Product: 482.62632102246585

Labels:
- Claim Label 101: 1
- Claim Label 102: 0
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 0
- Label 101 Adjusted: 1

Dataset: test