PATENT CLAIM ANALYSIS

Application Number: 15920748
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2019-09
Patent Classification: ["257", "329000"]

Abstract:
Disclosed is a semiconductor structure that includes a vertical field effect transistor (VFET) with a U-shaped semiconductor body. The semiconductor structure can be a standard VFET or a feedback VFET. In either case, the VFET includes a lower source/drain region, a semiconductor body on the lower source/drain region, and an upper source/drain region on the top of the semiconductor body. Rather than having an elongated fin shape, the semiconductor body folds back on itself in the Z direction so as to be essentially U-shaped (as viewed from above). Using a U-shaped semiconductor body reduces the dimension of the VFET in the Z direction without reducing the end-to-end length of the semiconductor body. Thus, VFET cell height can be reduced without reducing device drive current or violating critical design rules. Also disclosed is a method of forming a semiconductor structure that includes such a VFET with a U-shaped semiconductor body.

Claim (Index 2):
The semiconductor structure of  claim 1 ,\n wherein the lower source/drain region and the upper source/drain region have a same type conductivity, and wherein the vertical field effect transistor further comprises:\n a gate structure positioned laterally adjacent to sidewalls of the three segments of the semiconductor body so as to define a single channel region within the three segments of the semiconductor body; \n a lower spacer electrically isolating the gate structure from the lower source/drain region; \n an upper spacer electrically isolating the gate structure from the upper source/drain region; and \n a dielectric sidewall spacer positioned laterally immediately adjacent to the upper source/drain region and further above and immediately adjacent to the upper spacer wherein the dielectric sidewall spacer, the upper spacer, and the gate structure have essentially aligned vertical surfaces.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 90.0
- Lexical Diversity: 2.0625
- Patent Class: 257.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['15676219', '15490255', '15661058', '15709500', '15873156']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9419621351122552
- 35 USC 102 Novelty (BERT): 0.5403177407195336
- Combined Prediction Score: 0.9017976956729832
- Mean Citation Score: 369.801494
- Max Citation Score: 392.51923
- Similarity Product: 296.9596101003075

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