The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 04, 2024
Filed:
Jan. 26, 2021
Applicant:
Samsung Electronics Co., Ltd., Suwon-si, KR;
Inventors:
Assignee:
SAMSUNG ELECTRONICS CO., LTD., Suwon-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 37/32 (2006.01);
U.S. Cl.
CPC ...
H01J 37/32174 (2013.01); H01J 37/32128 (2013.01); H01J 37/32146 (2013.01); H01J 37/32091 (2013.01); H01J 37/32577 (2013.01);
Abstract
A wafer processing apparatus includes a chamber, and a voltage waveform generator configured to accelerate plasma ions of the chamber, the voltage waveform generator includes: a pulse circuit configured to apply a chamber voltage, which is a pulse voltage, to the chamber by adjusting a chamber current applied to the chamber; and a slope circuit configured to generate a slope in an on-duty of the chamber voltage, which is the pulse voltage, and the pulse circuit includes a first inductive element configured to store a first internal current.