PATENT CLAIM ANALYSIS

Application Number: 16459067
Application Type: Utility
Filing Date: 2019-07
Publication Date: 2019-10
Patent Classification: ["438", "591000"]

Abstract:
A semiconductor wafer serving as a treatment target has a stack structure in which a high-dielectric-constant gate insulating film is formed on a silicon base material with an interface layer film of silicon dioxide sandwiched therebetween, and a metal gate electrode containing fluorine is further formed thereon. A heat treatment apparatus radiates flash light from a flash lamp to the semiconductor wafer in an atmosphere containing hydrogen to carry out heating treatment for an extremely short period of time of 100 milliseconds or less. As a result, diffusion of nitrogen contained in the metal gate electrode is inhibited, at the same time, only the fluorine is diffused from the high-dielectric-constant gate insulating film to an interface between the interface layer film and the silicon base material to reduce an interface state, and reliability of the gate stack structure can be improved.

Claim (Index 1):
A manufacturing method of a semiconductor device of forming a high-dielectric-constant gate insulating film on a silicon substrate with an interface layer film sandwiched therebetween, the manufacturing method comprising following steps of:\n (a) forming the high-dielectric-constant gate insulating film on a surface of said substrate with the interface layer film of silicon dioxide sandwiched therebetween; (b) forming a metal gate electrode containing fluorine on said high-dielectric-constant gate insulating film; and (c) subjecting said substrate to heating treatment of 100 milliseconds or less in a gas atmosphere of one selected from a group consisting of hydrogen, ammonia, nitrogen trifluoride, and fluorine to diffuse the fluorine to said high-dielectric-constant gate insulating film and said interface layer film.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 100.0
- Lexical Diversity: 1.8625
- Patent Class: 438.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['13914698', '15798743', '13607892', '14975992', '15380000']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8435554368140736
- 35 USC 102 Novelty (BERT): 0.466612381628078
- Combined Prediction Score: 0.8058611312954741
- Mean Citation Score: 155.678654
- Max Citation Score: 162.84018
- Similarity Product: 126.01699279586076

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