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:
Jul. 26, 2005
Filed:
Oct. 23, 2003
Chaung-ming Chiu, Taoyuan, TW;
Chaung-Ming Chiu, Taoyuan, TW;
Abstract
A voltage level shifter includes a front stage circuit periodically generating a first control signal and a second control signal in response to a first input clock signal and a second input clock signal complementary to the first input clock signal; a switch circuit including two PMOS transistors connected between a maximum voltage and a minimum voltage in series, wherein a third control signal is outputted from a conjunction of the two PMOS transistors, and the first and second control signals are coupled to the gate electrodes of the two PMOS transistors, respectively; and a driving circuit receiving the third control signal and outputting an output clock signal having a peak-to-peak value larger than a peak-to-peak value of the input clock signal. The voltage level shifter is implemented by essentially PMOS transistors.