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:
Nov. 08, 2005
Filed:
Jun. 24, 2002
Takeshi Yano, Nara, JP;
Noriyuki Kajihara, Nara, JP;
Yukihisa Orisaka, Nabari, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
In a display driving apparatus of the present invention and a liquid display apparatus using the same, a DC current is supplied to a reference voltage generating circuit from both ends of a resistance of the resistance divided circuit, via a bypass circuit, which is a bypass other than a route from a power source. This arrangement allows the reference voltage generating circuit itself to compensate current supply ability of a reference voltage supplied from the power source, even if an output circuit is omitted from the arrangement, thereby preventing a waveform of a gradation display voltage from having non-sharp rising and falling edges, or preventing variation in voltage due to charging and discharging of a pixel capacitor. This ensures an accurate gradation display voltage.