PATENT CLAIM ANALYSIS

Application Number: 15981921
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2019-10
Patent Classification: ["257", "347000"]

Abstract:
Provided are a silicon-on-insulator structure having bipolar stress and a manufacturing method therefor. The manufacturing method comprises providing a composite substrate, wherein the composite substrate has a silicon substrate layer, a buried oxide layer and a silicon-on-insulator layer sequentially from bottom to top, epitaxially growing a silicon germanium layer on an upper surface of the silicon-on-insulator layer; depositing a hard mask layer to cover a portion of the silicon germanium layer corresponding to an N-type MOS transistor region; depositing a surface oxide layer to cover the silicon germanium layer and the hard mask layer; performing a high temperature annealing treatment so that a portion of the silicon-on-insulator layer corresponding to a P-type MOS transistor region is converted into a silicon-germanium-on-insulator layer, and the portion corresponding to the N-type MOS transistor region is converted into a tensile stress silicon-on-insulator layer.

Claim (Index 4):
The manufacturing method of  claim 1 , wherein the removing step further comprises: removing the silicon germanium layer, the hard mask layer and the surface oxide layer by using wet processes, wherein\n the surface oxide layer is removed using diluted hydrofluoric acid; the hard mask layer is removed using phosphoric acid; and the silicon germanium layer is removed using a mixed solution of nitric acid, hydrofluoric acid, acetic acid and water.

Metadata:
- Claim Count in Document: 8.0
- Percentile: 93.0
- Lexical Diversity: 2.34921
- Patent Class: 257.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['12869978', '15191369', '13762677', '12980519', '13443133']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.927897894839994
- 35 USC 102 Novelty (BERT): 0.5033206142571419
- Combined Prediction Score: 0.8854401667817087
- Mean Citation Score: 253.906402
- Max Citation Score: 271.02127
- Similarity Product: 206.97115988451603

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

Dataset: test