PATENT CLAIM ANALYSIS

Application Number: 16112640
Application Type: Utility
Filing Date: 2018-08
Publication Date: 2018-12
Patent Classification: ["257", "190000"]

Abstract:
A structure of SiGe source/drain and a preparation method thereof are disclosed in the present invention. Firstly, providing a semiconductor single crystal silicon substrate. Secondly, etching the semiconductor single crystal silicon substrate to form recesses on both sides of the gate. Thirdly, epitaxially growing a SiGe seed layer and a SiGe bulk layer in the recesses in turn. Fourthly, subjecting the SiGe bulk layer to a crystal plane treatment with a mixed-gases. Fifthly, epitaxially growing a lattice change layer on the SiGe bulk layer. Finally, epitaxially growing a cap layer on the lattice change layer. The preparation method of the present invention can greatly improve the morphology of the SiGe epitaxy in the incomplete Un-tuck structure, and promote the formation of the subsequent metal silicide (NiSi), so that problems such as abnormal resistance and leakage of active area (AA leakage) can be effectively prevented.

Claim (Index 3):
The structure according to  claim 1 , wherein the material of the lattice change layer is SiGe.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 96.0
- Lexical Diversity: 2.0
- Patent Class: 257.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15390528', '13914442', '10845984', '12201681', '11539775']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9343097955345672
- 35 USC 102 Novelty (BERT): 0.5598198224526144
- Combined Prediction Score: 0.8968607982263718
- Mean Citation Score: 279.369804
- Max Citation Score: 431.06757000000016
- Similarity Product: 394.04710965104

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