PATENT CLAIM ANALYSIS

Application Number: 15988215
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-11
Patent Classification: ["438", "714000"]

Abstract:
An etching method includes a loading step of loading into a chamber a target substrate in which a mask film is laminated on an organic film; a first etching step of etching the organic film below the mask film by plasma of a processing gas in which a flow rate ratio of a second gas containing sulfur to a first gas containing oxygen is set to a first flow rate ratio; and a second etching step of further etching the organic film by plasma of a processing gas in which a flow rate ratio of the second gas to the first gas is set to a second flow rate ratio different from the first flow rate ratio. The first etching step and the second etching step are alternately performed multiple times.

Claim (Index 10):
An etching apparatus comprising:\n a chamber into which a target substrate having an organic film and a mask film laminated on the organic film is loaded; a gas supply unit configured to supply a first gas containing oxygen and a second as containing sulfur into the chamber; an etching processing unit configured to etch the organic film below the mask film by plasma of processing gas supplied into the chamber; and control unit configured to control a flow rate ratio of the second gas to the first gas, wherein the control unit is configured to perform: a first etching step in which the gas supply unit is controlled to set the flow rate ratio to a first flow rate and the etching processing unit is controlled to etch the organic film by plasma of the processing gas having the first flow rate ratio; and a second etching step in which the supply unit is controlled to set the flow rate ratio to a second flow rate ratio different from the first flow rate ratio and the etching processing unit is controlled to further etch the organic film by plasma of the processing gas having the second flow rate ratio, wherein the first etching step and the second etching step are alternately repeated multiple times in etching the organic film.

Metadata:
- Claim Count in Document: 16.0
- Percentile: 93.0
- Lexical Diversity: 2.7551
- Patent Class: 438.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14125363', '11691804', '11374124', '14316082', '13809624']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.861217129365807
- 35 USC 102 Novelty (BERT): 0.4883829277699171
- Combined Prediction Score: 0.823933709206218
- Mean Citation Score: 228.37808
- Max Citation Score: 243.38039
- Similarity Product: 196.88523739958228

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