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. 10, 2012
Filed:
Jul. 31, 2009
Kouichi Nishimura, Kanagawa, JP;
Kouichi Nishimura, Kanagawa, JP;
Renesas Electronics Corporation, Kawasaki-shi, Kanagawa, JP;
Abstract
Provided is a display panel driver with an improved driving characteristic by use of an amplifier output having excellent symmetry of an output characteristic. The display panel driver according to the present invention includes a first input differential stage circuit, a first output stage circuit, a second output stage circuit, and a first switch circuit. The first input differential stage circuit outputs two first input stage output signals according to one of a positive voltage and a negative voltage. The first switch circuit selects one of the first and second output stage circuits, and connects the selected circuit to the first input differential stage circuit. The output stage circuit connected to the first input differential stage circuit outputs a single-ended signal based on the two first input stage output signals from the first input differential stage circuit.