PATENT CLAIM ANALYSIS

Application Number: 16069995
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2019-01
Patent Classification: ["438", "723000"]

Abstract:
A method for selectively etching a first region made of silicon oxide with respect to a second region made of silicon nitride or another material different from that of the first region. The method includes a first step for generating, in a processing container housing a workpiece to be treated, a plasma of a treatment gas including a fluorocarbon gas, an oxygen-containing gas, and an inert gas, and forming a deposit including fluorocarbon on the object to be treated; and a second step for etching the first region with radicals of the fluorocarbon included in the deposit. The first step and the second step are executed repeatedly.

Claim (Index 5):
A method comprising:\n (a) providing a workpiece including a first region and a second region, in which the first region is made of a silicon-containing material and the second region is made of a material other than the silicon-containing material of the first region, in which the second region defines a recess, the first region fills the recess and covers the second region, and in which a mask is above the recess and the mask has an opening with an opening width larger than an opening width of the recess; and (b) selectively etching the first region with respect to the second region with a first sequence comprising:\n (i) a first step of generating plasma from a processing gas containing a fluorocarbon gas, an oxygen-containing gas, and an inert gas in a processing chamber accommodating the workpiece to form a deposit containing fluorocarbon on the workpiece; \n (ii) a second step of etching the first region with fluorocarbon radicals contained in the deposit; and \n wherein the first sequence is repeatedly executed.

Metadata:
- Claim Count in Document: 34.0
- Percentile: 95.0
- Lexical Diversity: 2.07143
- Patent Class: 438.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15184049', '14995269', '16069757', '14995392', '15090726']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.877673177520673
- 35 USC 102 Novelty (BERT): 0.5311473075465489
- Combined Prediction Score: 0.8430205905232606
- Mean Citation Score: 321.008136
- Max Citation Score: 368.17603
- Similarity Product: 340.96005861084353

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