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:
Mar. 23, 2010
Filed:
Aug. 20, 2007
Wen-ting Chu, Kaohsiung, TW;
Yong-shiuan Tsair, Tainan, TW;
Kuo-wei Chu, Taipei, TW;
Cheng-hsiung Kuo, Jhubei, TW;
Jih-chen Wang, Hsinchu, TW;
Wen-Ting Chu, Kaohsiung, TW;
Yong-Shiuan Tsair, Tainan, TW;
Kuo-Wei Chu, Taipei, TW;
Cheng-Hsiung Kuo, Jhubei, TW;
Jih-Chen Wang, Hsinchu, TW;
Taiwan Semiconductor Manufacturing Company, Ltd., Hsin-Chu, TW;
Abstract
A charge pump circuit is provided which includes at least two charge pump stages connected in series with a front charge pump stage having a first transistor for receiving an input voltage and a last charge pump stage having a second transistor for providing an output voltage. The first transistor is configured to operate at a first threshold voltage and the second transistor is configured to operate at a second threshold voltage different than the first threshold voltage.