PATENT CLAIM ANALYSIS

Application Number: 15913297
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-09
Patent Classification: ["257", "316000"]

Abstract:
A semiconductor device and a fabrication method are provided. The fabrication method includes providing a gate structure on a substrate and a first protective layers on the gate structure; forming an initial sidewall spacer on a sidewall of each of the gate structure and the first protective layer; forming a first sidewall spacer on a sidewall of the initial sidewall spacer, the first and initial sidewall spacers being made of different materials; forming a second sidewall spacer by removing a portion of the initial sidewall spacer, leaving a trench formed above the second sidewall spacer and between the first sidewall spacer and the first protective layer; and forming a second protective layer in the trench, the second protective layer and the first sidewall spacer being made of a same material. The second sidewall spacer has a top surface higher than or level with a top surface of the gate structure.

Claim (Index 12):
The method according to  claim 1 , wherein:\n removing the portion of the initial sidewall spacer includes a dry etching process, including: an etching gas including NF 3  and NH 3 , a total flow of the etching gas being in a range of about 50 sccm\u02dcabout 600 sccm, a source RF power in the range of about 10 W\u02dcabout 500 W, and a chamber pressure in the range of about 3 mtorr\u02dcabout 200 mtorr.

Metadata:
- Claim Count in Document: 17.0
- Percentile: 90.0
- Lexical Diversity: 2.85714
- Patent Class: 257.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14970881', '14070645', '15059635', '15645013', '14968108']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9270638804559248
- 35 USC 102 Novelty (BERT): 0.5011366681834463
- Combined Prediction Score: 0.8844711592286768
- Mean Citation Score: 235.77663
- Max Citation Score: 248.71288
- Similarity Product: 177.48030538339614

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