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 8):
The method according to  claim 4 , wherein:\n when forming the contact hole, an etching selectivity ratio of the interlayer dielectric layer relative to the third sidewall spacer or an etching selectivity ratio of the interlayer dielectric layer relative to the first sidewall spacer is a first ratio; when forming the contact hole, an etching selectivity ratio of the interlayer dielectric layer relative to the second sidewall spacer is a second ratio; the second ration is less than the first ratio; and the second sidewall spacer is made of a material having an electrical isolation performance stronger than the first sidewall spacer and the third sidewall spacer.

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): 0.9267407505717438
- 35 USC 102 Novelty (BERT): 0.5065103149425068
- Combined Prediction Score: 0.88471770700882
- Mean Citation Score: 235.77663
- Max Citation Score: 248.71288
- Similarity Product: 163.51588774821286

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