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:
Sep. 14, 2004
Filed:
Nov. 19, 2002
Applicant:
Inventors:
Chin-Wen Chou, Hsin-Tien, TW;
Eddie Cheng, Hsin-Tien, TW;
Assignee:
Shin Jiuh Corp., , TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 4/1107 ;
U.S. Cl.
CPC ...
H01L 4/1107 ;
Abstract
A piezoelectric transformation driving apparatus for driving elements or products to be driven by a high or a low voltage includes a pulse-width modulation (PWM) control unit, a plurality of driving units, a plurality of transformation units, a plurality of piezoelectric units, and a plurality of loads. The PWM control unit outputs signals of the same phase and frequency to drive synchronously the driving units, the transformation units, the piezoelectric units and the loads to operate synchronously.