PATENT CLAIM ANALYSIS

Application Number: 15986622
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2019-11
Patent Classification: ["257", "190000"]

Abstract:
Techniques for forming VTFET devices with tensile- and compressively-strained channels using dummy stressor materials are provided. In one aspect, a method of forming a VTFET device includes: patterning fins in a wafer; forming bottom source and drains at a base of the fins; forming bottom spacers on the bottom source and drains; growing at least one dummy stressor material along sidewalls of the fins above the bottom spacers configured to induce strain in the fins; surrounding the fins with a rigid fill material; removing the at least one dummy stressor material to form gate trenches in the rigid fill material while maintaining the strain in the fins by the rigid fill material; forming replacement gate stacks in the gate trenches; forming top spacers on the replacement gate stacks; and forming top source and drains over the top spacers at tops of the fins. A VTFET device is also provided.

Claim (Index 17):
The method of  claim 15 , wherein the gate conductor comprises a workfunction setting metal selected from the group consisting of: titanium nitride (TiN), tantalum nitride (TaN), aluminum (Al)-containing alloys, titanium aluminide (TiAl), titanium aluminum nitride (TiAlN), titanium aluminum carbide (TiAlC), tantalum aluminide (TaAl), tantalum aluminum nitride (TaAlN), tantalum aluminum carbide (TaAlC), tungsten (W), and combinations thereof.

Metadata:
- Claim Count in Document: 41.0
- Percentile: 93.0
- Lexical Diversity: 2.38235
- Patent Class: 257.0
- Transitional Phrase Type: closed
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15960078', '15866851', '15863000', '15862930', '14951726']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9319611019510602
- 35 USC 102 Novelty (BERT): 0.5711672886973534
- Combined Prediction Score: 0.8958817206256895
- Mean Citation Score: 337.345372
- Max Citation Score: 457.59933
- Similarity Product: 385.2721007319206

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