PATENT CLAIM ANALYSIS

Application Number: 15888906
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-06
Patent Classification: ["257", "774000"]

Abstract:
A structure and a formation method of a semiconductor device structure are provided. The semiconductor device structure includes a semiconductor substrate and a conductive feature over the semiconductor substrate. The semiconductor device structure also includes a dielectric layer over the conductive feature and the semiconductor substrate and a via hole in the dielectric layer. The via hole has an oval cross section. The semiconductor device structure further includes a trench in the dielectric layer, and the via hole extends from a bottom portion of the trench. The trench has a trench width wider than a hole width of the via hole. In addition, the semiconductor device structure includes one or more conductive materials filling the via hole and the trench and electrically connected to the conductive feature.

Claim (Index 21):
A method for forming a semiconductor device, comprising:\n providing a semiconductor substrate having a conductive feature disposed thereon; depositing a dielectric layer over the semiconductor substrate and conductive feature; depositing a hard mask layer over the dielectric layer, wherein the hard mask layer has a first opening over the conductive feature; forming a mask layer over the hard mask layer, wherein the mask layer has a second opening above the first opening; etching an exposed region of the dielectric layer to form a via hole, wherein the exposed region is defined by an overlap of the first opening and the second opening; filling the via hole with a protective material; etching the hard mask layer after filling the via hole with the protective material, wherein the etching the hard mask layer enlarges the first opening to provide an enlarged first opening; and etching the dielectric layer through the enlarged first opening.

Metadata:
- Claim Count in Document: 8.0
- Percentile: 88.0
- Lexical Diversity: 2.72
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15633992', '15808184', '15593214', '15668216', '14658525']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9139137775518454
- 35 USC 102 Novelty (BERT): 0.4648694795600798
- Combined Prediction Score: 0.8690093477526688
- Mean Citation Score: 195.064376
- Max Citation Score: 199.01926
- Similarity Product: 180.05505768999103

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