PATENT CLAIM ANALYSIS

Application Number: 16069757
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2019-03
Patent Classification: ["216", "067000"]

Abstract:
A method of selectively etching a first region R 1  made of silicon oxide with respect to a second region R 2  made of silicon nitride by performing a plasma processing upon a processing target object is provided. The processing target object has the second region R 2  forming a recess; the first region R 1  configured to fill the recess; and a mask MK provided on the first region R 1 . The method includes a first process of generating plasma of a processing gas containing a fluorocarbon gas, and a second process of etching the first region with radicals of fluorocarbon contained in a deposit. In the second process, a high frequency power contributing to the generating of the plasma is applied in a pulse shape, and these processes are repeated.

Claim (Index 4):
The etching method of  claim 1 ,\n wherein, in the second process, the high frequency power of the pulse shape is generated by applying a first high frequency power for plasma generation to an upper electrode provided above the processing target object within the processing vessel; applying a second high frequency power for ion attraction to a lower electrode provided under the processing target object; and performing a modulation of alternately switching a period during which the first high frequency power and the second high frequency power are ON and a period during which the first high frequency power and the second high frequency power are OFF.

Metadata:
- Claim Count in Document: 14.0
- Percentile: 95.0
- Lexical Diversity: 2.20312
- Patent Class: 216.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14995269', '14995552', '15527360', '14995392', '15184049']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8147790265971805
- 35 USC 102 Novelty (BERT): 0.5161027360878729
- Combined Prediction Score: 0.7849113975462498
- Mean Citation Score: 320.627042
- Max Citation Score: 332.36383
- Similarity Product: 265.5532803538597

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

Dataset: test