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. 07, 2009
Filed:
Feb. 16, 2007
Ming-chun Tseng, Tainan, TW;
Hong-ru Guo, Tainan, TW;
Chienh-siang Huang, Sinying, TW;
Chi Mei Optoelectronics Corporation, Tainan, TW;
Chi Mei EL Corporation, Tainan, TW;
Abstract
A logic circuit includes a logic unit, a driving unit, and a voltage level adjuster. The logic unit includes an output node having a logic state, the logic unit being coupled to a first voltage reference. The driving unit includes an input node, the driving unit being coupled to a second voltage reference, the driving unit and the first logic unit being constructed from a single type of transistor. The voltage level adjuster provides a control signal that causes the driving unit to reduce a current flowing through the driving unit when the output node of the first logic unit has a first logic state, and causes the driving unit to drive an output node of the logic circuit to a voltage level substantially equal to that of the second voltage reference when the output node of the first logic unit has a second logic state.