PATENT CLAIM ANALYSIS

Application Number: 16134976
Application Type: Utility
Filing Date: 2018-09
Publication Date: 2019-05
Patent Classification: ["438", "689000"]

Abstract:
A method of self-aligned double patterning is disclosed in the present invention, which includes the step of forming multiple mandrels on a hard mask layer and spacers at two sides of each mandrel, forming a protection layer filling between the spacers, removing the mandrels to expose the hard mask layer, and performing an anisotropic etch process using the spacers and the protection layer as an etch mask to remove a portion of hard mask layer, so that a thickness of hard mask layer exposed between the spacers equals to a thickness of hard mask layer under the protection layer.

Claim (Index 3):
The method of self-aligned double patterning of  claim 1 , wherein the steps of forming said spacers comprises:\n forming a conformal spacer layer on said mandrels and said hard mask layer; and performing a second anisotropic etch process to said spacer layer, so that said spacer layer self-alignedly transforms into said spacers at two sides of each said mandrel and forming said first trenches exposing said hard mask layer between said spacers, wherein said second anisotropic etch process concurrently remove a portion of said hard mask layer exposed from said first trenches.

Metadata:
- Claim Count in Document: 9.0
- Percentile: 97.0
- Lexical Diversity: 1.98113
- Patent Class: 438.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15900764', '15623862', '14014906', '15889043', '15972223']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8844672014641844
- 35 USC 102 Novelty (BERT): 0.5197557157699354
- Combined Prediction Score: 0.8479960528947595
- Mean Citation Score: 287.1913
- Max Citation Score: 328.9244
- Similarity Product: 271.8307447404861

Labels:
- Claim Label 101: 1
- Claim Label 102: 0
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 0
- Label 101 Adjusted: 1

Dataset: test