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:
May. 23, 2006
Filed:
Jan. 27, 2003
Masahiko Aiba, Nara, JP;
Takasumi Wada, Nara, JP;
Hirokazu Fujita, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A capacitive load driving circuit () for charging and discharging a capacitive load () is provided with a voltage divider () for dividing a power supply voltage (VH) into a plurality of different voltages (V–V), a plurality of condensers () to which the voltages (V–V) are respectively charged as terminal voltages, and a switch () for switching connections between the capacitive load () and the condensers (), the switch () sequentially connecting the condensers () in an ascending order of the terminal voltages so that electrostatic energy is supplied to the capacitive load () when the capacitive load () is charged, the switch () sequentially connecting the condensers () in a descending order of the terminal voltages so that electrostatic energy is collected from the capacitive load () when the capacitive load () is discharged. With this, it is possible to provide a capacitive load drive circuit having a simple circuit configuration and capable of efficiently collecting and reusing energy accumulated in the capacitive load, and a capacitive load driving method.