PATENT CLAIM ANALYSIS

Application Number: 16234985
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-05
Patent Classification: ["257", "190000"]

Abstract:
After forming a gate structure over a semiconductor fin that extends upwards from a semiconductor substrate portion, a sigma cavity is formed within the semiconductor fin on each side of the gate structure. A semiconductor buffer region composed of an un-doped stress-generating semiconductor material is epitaxially growing from faceted surfaces of the sigma cavity. Finally, a doped semiconductor region composed of a doped stress-generating semiconductor material is formed on the semiconductor buffer region to completely fill the sigma cavity. The doped semiconductor region is formed to have substantially vertical sidewalls for formation of a uniform source/drain junction profile.

Claim (Index 1):
A method of forming a semiconductor structure comprising:\n forming a gate structure over a semiconductor fin that extends upwards from a semiconductor substrate portion, wherein the gate structure comprises a gate stack straddling a channel portion of the semiconductor fin and a gate spacer present on sidewalls of the gate stack; forming a sigma cavity within the semiconductor fin on each side of the gate structure, wherein the sigma cavity comprises a horizontal tip region extending beneath the gate spacer and a bottom region extending towards the semiconductor substrate portion; epitaxially growing a semiconductor buffer region from faceted surfaces of the sigma cavity, wherein the semiconductor buffer region completely fills the horizontal tip region and the bottom region of the sigma cavity, wherein an unfilled portion of the sigma cavity has substantially vertical sidewalls; and epitaxially growing a doped semiconductor region from the semiconductor buffer region, wherein the doped semiconductor region completely fills the unfilled portion of the sigma cavity and has substantially vertical sidewalls.

Metadata:
- Claim Count in Document: 15.0
- Percentile: 98.0
- Lexical Diversity: 1.92593
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15808405', '15619923', '14954166', '14841033', '14951660']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.927641879382104
- 35 USC 102 Novelty (BERT): 0.5606035476138639
- Combined Prediction Score: 0.8909380462052798
- Mean Citation Score: 340.279592
- Max Citation Score: 449.40308
- Similarity Product: 370.2612619544315

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

Dataset: test