PATENT CLAIM ANALYSIS

Application Number: 16116267
Application Type: Utility
Filing Date: 2018-08
Publication Date: 2019-02
Patent Classification: ["216", "069000"]

Abstract:
An etching method includes loading, first and second supplying, removing and etching steps. In the loading step, a target object is loaded into a chamber. In the first supply step, a first gas containing carbon, hydrogen and fluorine is supplied into the chamber. In the modification step, plasma of the first gas is generated to modify a surface of a mask film and a surface of an organic film which is not covered with the mask film. In the second supply step, a second gas for etching the organic film is supplied into the chamber. In the removal step, a modified layer formed on the surface of the organic film is removed by applying a first high frequency bias power. In the etching step, the organic film below the modified layer is etched by applying a second high frequency bias power lower than the first high frequency bias power.

Claim (Index 11):
An etching apparatus comprising:\n a chamber; a stage, provided in the chamber, configured to mount thereon a target object including a base film, a first organic film and a mask film that are laminated; a first supply unit configured to supply a first gas containing carbon, hydrogen and fluorine into the chamber; a second supply unit configured to supply a second gas for etching the first organic film into the chamber; a plasma generation unit configured to generate plasma of the first gas or the second gas in the chamber; and a control unit configured to control the first supply unit, the second supply unit and the plasma generation unit, wherein the control unit executes: a first supply step of supplying the first gas into the chamber in a state where the target object is mounted on the stage; a modification step of generating plasma of the first gas in the chamber and modifying a surface of the mask film and a surface of the first organic film which is not covered with the mask film; a second supply step of supplying a second gas into the chamber; a removal step of removing a modified layer formed on the surface of the first organic film which is not covered with the mask film by applying a first high frequency bias power to the stage and generating plasma of the second gas in the chamber; and an etching step of etching the first organic film below the removed modified layer by applying a second high frequency bias power lower than the first high frequency bias power to the stage and generating plasma of the second gas in the chamber.

Metadata:
- Claim Count in Document: 2.0
- Percentile: 96.0
- Lexical Diversity: 2.66129
- Patent Class: 216.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14603579', '15988215', '10860152', '14995269', '15137095']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7644797408030132
- 35 USC 102 Novelty (BERT): 0.4693292027686269
- Combined Prediction Score: 0.7349646869995745
- Mean Citation Score: 212.68276
- Max Citation Score: 223.64774
- Similarity Product: 194.6455192645621

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