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:
Apr. 24, 2012
Filed:
Jan. 04, 2010
Chen-jung Chuang, Hsinchu, TW;
Chin-yuan Tu, Taoyuan County, TW;
Cheng-chung Huang, Hsinchu, TW;
Hong-jun Hsiao, Hsinchu, TW;
Chen-Jung Chuang, Hsinchu, TW;
Chin-Yuan Tu, Taoyuan County, TW;
Cheng-Chung Huang, Hsinchu, TW;
Hong-Jun Hsiao, Hsinchu, TW;
NOVATEK Microelectronics Corp., Hsinchu Science Park, Hsin-Chu, TW;
Abstract
A voltage generator capable of preventing latch-up is disclosed. The voltage generator includes a positive charge pump unit, a negative charge pump unit, a second stage charge pump unit, and a control unit. The positive charge pump unit is utilized for generating a positive charge pump voltage according to a first enable signal. The negative charge pump is utilized for generating a negative charge pump voltage according to a second enable signal. The second stage charge pump unit is utilized for generating a gate-on voltage and a gate-off voltage according to a third enable signal and a fourth enable signal. The control unit is utilized for generating the first enable signal, the second enable signal, the third enable signal, and the fourth enable signal and make the second stage charge pump unit generate the gate-on voltage (or the gate-off voltage) in a successively-increasing (or decreasing) manner.