PATENT CLAIM ANALYSIS

Application Number: 15769828
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2019-10
Patent Classification: ["438", "717000"]

Abstract:
An etching method is provided for etching a silicon-containing layer into a pattern of a mask that is formed by etching—from a block copolymer layer that includes a first polymer and a second polymer, that is layered on the silicon-containing layer of a process-target object via an intermediate layer, and that is enabled to be self-assembled—a region including the second polymer and the intermediate layer right under the region. The method includes forming a protective film on the mask by arranging upper and lower electrodes facing each other, by applying a negative DC voltage to the upper electrode in a processing chamber of a plasma processing apparatus in which the process-target object is provided, by applying high-frequency power to the upper or lower electrode, and by supplying a process gas including a hydrogen gas and an inert gas into the processing chamber to generate plasma.

Claim (Index 1):
An etching method for etching a silicon-containing layer into a pattern of a mask that is formed by etching,\n from a block copolymer layer\n that includes a first polymer and a second polymer, \n that is layered on the silicon-containing layer of an object to be processed via an intermediate layer, and \n that is enabled to be self-assembled, \n a region including the second polymer and the intermediate layer right under the region, the etching method comprising: forming a protective film on the mask\n by arranging an upper electrode and a lower electrode facing each other, \n by applying a negative DC voltage to the upper electrode in a processing chamber of a plasma processing apparatus in which the object to be processed is provided, \n by applying high-frequency power to the upper electrode or the lower electrode, and \n by supplying a process gas including a hydrogen gas and an inert gas to the inside of the processing chamber to generate plasma; and \n etching the silicon-containing layer after the forming of the protective film.

Metadata:
- Claim Count in Document: 11.0
- Percentile: 91.0
- Lexical Diversity: 2.08219
- Patent Class: 438.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15770264', '15117052', '14131704', '14125363', '15007420']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8558248761368242
- 35 USC 102 Novelty (BERT): 0.5040087799251111
- Combined Prediction Score: 0.820643266515653
- Mean Citation Score: 221.448804
- Max Citation Score: 294.53885
- Similarity Product: 252.4402626439333

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

Dataset: test