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:
May. 06, 2008
Filed:
Mar. 16, 2005
Hajime Washio, Sakurai, JP;
Shinya Takahashi, Funabashi, JP;
Yuhiehiroh Murakami, Matsusaka, JP;
Seijirou Gyouten, Matsusaka, JP;
Shigeto Yoshida, Nabari, JP;
Hajime Washio, Sakurai, JP;
Shinya Takahashi, Funabashi, JP;
Yuhiehiroh Murakami, Matsusaka, JP;
Seijirou Gyouten, Matsusaka, JP;
Shigeto Yoshida, Nabari, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A driving device of a display device includes: a data signal line driving circuit including a shift register which has (i) multiple stages of flip-flops each of which operates in synchronism with a source clock signal and (ii) a level shifter for boosting the source clock signal whose amplitude is smaller than a driving voltage of each of the flip-flops so as to apply the driving voltage to the flip-flop, said data signal line driving circuit causing a sampling circuit to sample the image display data signal based on an output from the shift register so as to output the image display data signal to the data signal line; and control means for causing a frequency of the source clock signal in case of displaying an image to be higher than a frequency of the source clock signal in case of normal display in which multi-gradation display is performed in a full-color mode. Thus, it is possible to provide a driving device of a display device, a display device, and a driving method of the display device, whereby it is possible to reduce power consumption caused by an invalid current of the level shifter.