PATENT CLAIM ANALYSIS

Application Number: 15755490
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-12
Patent Classification: ["257", "195000"]

Abstract:
Monolithic FETs including a channel region in a first semiconductor material disposed over a substrate. While a mask, such as a gate stack or sacrificial gate stack, is covering a channel region, a semiconductor spacer of a semiconductor material with a band offset relative to the channel material is grown, for example on at least a drain end of the channel region to introduce at least one charge carrier-blocking band offset between the channel semiconductor and a drain region of a third III-V semiconductor material. In some N-type transistor embodiments, the carrier-blocking band offset is a conduction band offset of at least 0.1 eV. A wider band gap and/or a blocking conduction band offset may contribute to reduced gate induced drain leakage (GIDL). Source/drain regions couple electrically to the channel region through the semiconductor spacer, which may be substantially undoped (i.e. intrinsic) or doped. In some embodiments, the semiconductor spacer growth is integrated into a gate-last, source/drain regrowth finFET fabrication process.

Claim (Index 33):
A CMOS integrated circuit (IC), comprising:\n a silicon substrate; an n-type III-V-channeled fin field effect transistor (FET) disposed over a first region of the substrate, the finFET further including:\n a gate stack disposed over a channel region comprising a first III-V semiconductor material; \n a source region and a drain region, each comprising a second III-V semiconductor material having a band gap no wider than the first III-V semiconductor material; and \n a first semiconductor spacer disposed between the semiconductor channel region and at least the semiconductor drain region, the first semiconductor spacer comprising a third III-V semiconductor material having a charge carrier-blocking conduction band offset from the first III-V semiconductor material; and \n a p-type finFET disposed over a second region of the substrate.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 88.0
- Lexical Diversity: 1.97802
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15755450', '15574820', '15755489', '15579180', '15755448']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9245239549633476
- 35 USC 102 Novelty (BERT): 0.5264737117868065
- Combined Prediction Score: 0.8847189306456936
- Mean Citation Score: 297.367328
- Max Citation Score: 356.32983
- Similarity Product: 310.99770660993937

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