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:
Jan. 23, 2007
Filed:
Jul. 29, 2003
Mitsuru Goto, Chiba, JP;
Yuichi Numata, Mobara, JP;
Masato Sawahata, Ichihara, JP;
Yoshinori Aoki, Mobara, JP;
Youichi Ooki, IMobara, JP;
Mitsuru Goto, Chiba, JP;
Yuichi Numata, Mobara, JP;
Masato Sawahata, Ichihara, JP;
Yoshinori Aoki, Mobara, JP;
Youichi Ooki, IMobara, JP;
Hitachi Displays, Ltd., Mobara, JP;
Hitachi Device Engineering Co., Ltd., Mobara, JP;
Abstract
A display device used in a miniaturized portable equipment is capable of driving two display panels, consisting of main and sub-display panels. The display device includes a main display panel, a sub-display panel and a drive circuit. The drive circuit can simultaneously drive the main display panel and the sub-display panel. Output terminals are provided to the main display panel, and signals are transmitted to the sub-display panel from the output terminals. Further, the drive circuit includes a power source circuit which is capable of outputting proper common voltages to the main display panel and the sub-display panel.