PATENT CLAIM ANALYSIS

Application Number: 15894152
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2019-02
Patent Classification: ["156", "345470"]

Abstract:
A plasma processing apparatus includes a chamber, a first electrode disposed in the chamber configured to receive a substrate loaded on the first electrode. A second electrode disposed in the chamber is opposed to the first electrode, and an RF power source is configured to switch between an on-state and an off-state. The RF power source supplies a source RF power to the first or the second electrode and supplies a bias RF power to the first electrode in the on-state. A first DC voltage supply alternately supplies a first DC voltage of negative polarity and a second DC voltage of negative polarity to the second electrode depending status of the first RF power source. The second DC voltage supply is turned on between first and second cycles where the first DC voltage is output to supply a third DC voltage of positive polarity to the first electrode.

Claim (Index 17):
A method for manufacturing a semiconductor device performed by a plasma processing apparatus, the apparatus comprising a chamber, a first electrode disposed in the chamber, wherein a substrate is loaded on the first electrode, a second electrode disposed in the chamber to oppose to the first electrode, a RF power source configured to supply a source RF power to the first electrode or the second electrode and to supply a bias RF power to the first electrode when it is turned on to generate an RF electric field between the first electrode and the second electrode that excites a gas in the chamber into a plasma state, a first DC voltage supply configured to supply a first DC voltage or a second DC voltage of negative polarity to the second electrode, wherein an absolute value of the second DC voltage is greater than an absolute value of the first DC voltage, and a second DC voltage supply configured to supply a third DC voltage of positive polarity to the first electrode when it is turned on,\n wherein the method comprises: supplying the first DC voltage to the second electrode from the first DC supply and turning on the RF power source from a first time to a second time, to etch the substrate to form a contact hole or a trench therein having a first depth; turning off the RF power source, supplying the second DC voltage to the second electrode from the first DC voltage supply from the second time to a third time, and turning on the second DC voltage supply between the second time and the third time to migrate anions and electrons in the chamber into the contact hole or the trench; and supplying the first DC voltage to the second electrode from the first DC voltage supply and turning on the RF power source from the third time to a fourth time, to etch the substrate so that the contact hole or the trench becomes deeper the first depth.

Metadata:
- Claim Count in Document: 36.0
- Percentile: 88.0
- Lexical Diversity: 3.03922
- Patent Class: 156.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['12692913', '13396181', '15368486', '15290846', '11156559']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9025880292441686
- 35 USC 102 Novelty (BERT): 0.4919540518267435
- Combined Prediction Score: 0.8615246315024262
- Mean Citation Score: 245.63092200000003
- Max Citation Score: 252.35262000000003
- Similarity Product: 198.2771144394422

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

Dataset: test