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:
Mar. 06, 2012
Filed:
Nov. 17, 2009
Manabu Nishimizu, Oita, JP;
Yuushi Shutou, Oita, JP;
Hideaki Hasegawa, Ibaraki, JP;
Koji Higuchi, Ibaraki, JP;
Manabu Nishimizu, Oita, JP;
Yuushi Shutou, Oita, JP;
Hideaki Hasegawa, Ibaraki, JP;
Koji Higuchi, Ibaraki, JP;
Oki Semiconductor Co., Ltd., Tokyo, JP;
Abstract
The present disclosure provides a display panel driving apparatus that can make the circuit layout surface area smaller, and prevent circuit damage. The display panel driving apparatus includes a source amplifier, a sink amplifier, a switch and the like. The source amplifier includes a first output circuit, a second output circuit and the like, and a guard transistor is provided between the first output circuit and the second output circuit to prevent an output signal voltage of the first output circuit from becoming less than an intermediate voltage. The sink amplifier includes a first output circuit and a second output circuit, and a guard transistor is provided between the first output circuit and the second output circuit to prevent an output signal voltage of the first output circuit from exceeding an intermediate voltage.