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:
Feb. 21, 2012
Filed:
Mar. 23, 2010
Shao-chang Huang, Hsinchu, TW;
Wei-yao Lin, Hsinchu County, TW;
Tang-lung Lee, Taipei County, TW;
Kun-wei Chang, Taipei County, TW;
Lin-fwu Chen, Hsinchu County, TW;
Wen-hao Lee, Hsinchu County, TW;
Luan-yi Yen, Ping-Tung County, TW;
Yu-chun Chang, Yun-Lin County, TW;
Shao-Chang Huang, Hsinchu, TW;
Wei-Yao Lin, Hsinchu County, TW;
Tang-Lung Lee, Taipei County, TW;
Kun-Wei Chang, Taipei County, TW;
Lin-Fwu Chen, Hsinchu County, TW;
Wen-Hao Lee, Hsinchu County, TW;
Luan-Yi Yen, Ping-Tung County, TW;
Yu-Chun Chang, Yun-Lin County, TW;
eMemory Technology Inc., Hsinchu Science Park, Hsin-Chu, TW;
Abstract
A high-voltage selecting circuit generates an output voltage with no voltage drop by means of an auxiliary NMOS transistor turning on the corresponding selecting PMOS transistor of the high-voltage selecting circuit when the voltage levels of a first input voltage and a second input voltage are equal. In addition, when one of the first input voltage and the second input voltage is higher than the other one, the high-voltage selecting circuit avoids the leakage current by means of an auxiliary PMOS transistor turning off the corresponding selecting PMOS transistor of the high-voltage selecting circuit. In this way, the high-voltage selecting circuit can correctly generate the output voltage according to the first input voltage and the second input voltage, and avoid the leakage current at the same time.