PATENT CLAIM ANALYSIS

Application Number: 15964306
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2019-10
Patent Classification: ["257", "751000"]

Abstract:
A semiconductor structure includes a conductive feature, a first metal-based etch-stop layer over the underlying structure, a metal-free etch-stop layer over the first metal-based etch-stop layer, a second metal-based etch-stop layer over the metal-free etch-stop layer, an interlayer dielectric layer over the second metal-based etch-stop layer, and an interconnect structure extending through the first metal-based etch-stop layer, metal-free etch-stop layer, and the second metal-based etch-stop layer, wherein a bottom portion of the conductive interconnect structure directly contacts the conductive feature. The first metal-based etch-stop layer may include a first metallic component having one of aluminum, tantalum, titanium, or hafnium, and the second metal-based etch-stop layer may include a second metallic component the same as or different from the first metallic component. The first metal-based etch-stop layer and the second metal-based etch-stop layer may both be free of silicon.

Claim (Index 20):
The method of  claim 16 , wherein the forming of the etch-stop layer includes forming the first metal-containing sub-layer by a first deposition process, forming the metal-free sub-layer over the first metal-containing sub-layer by a spin-coating process, and forming the second metal-containing sub-layer over the metal-free sub-layer by a second deposition process similar to the first deposition process, the first and the second deposition process each including one of chemical vapor deposition, physical vapor deposition, and atomic layer deposition.

Metadata:
- Claim Count in Document: 23.0
- Percentile: 91.0
- Lexical Diversity: 3.0
- Patent Class: 257.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['13343771', '14222295', '15063358', '14621221', '15920727']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.920256875995122
- 35 USC 102 Novelty (BERT): 0.4819639043421508
- Combined Prediction Score: 0.8764275788298249
- Mean Citation Score: 181.120064
- Max Citation Score: 183.54839
- Similarity Product: 132.98046949208856

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