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:
Aug. 07, 2018
Filed:
Jan. 23, 2017
Seiko Epson Corporation, Tokyo, JP;
Akira Abe, Nagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A drive circuit includes a control signal generator configured to generate a control signal based on a drive signal and a source drive signal, and an amplifier including a high-side transistor and a low-side transistor controlled based on the control signal. The amplifier is configured to output the drive signal from an output terminal to drive a capacitive load during a first period in which a voltage of the drive signal changes to be higher than or equal to a first voltage per unit time and a second period in which the voltage changes to be lower than the first voltage or does not change per unit time. The first period includes a period in which one of the high-side and the low-side transistors performs a switching operation. The second period includes a period in which the one of the high-side and the low-side transistors performs a linear operation.