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:
Jan. 11, 2001
Haruo Tanaka, Kyoto, JP;
Takashi Nakamura, Kyoto, JP;
Haruo Tanaka, Kyoto, JP;
Takashi Nakamura, Kyoto, JP;
Rohm Co. Ltd., Kyoto, JP;
Abstract
For example, a display element () formed by an organic EL element and a control element formed by a MOS transistor () are connected in series between a driving line () to be driven with a voltage or a current and a ground. A gate of the MOS transistor () is connected to a control line () through a nonvolatile data holding section such as a ferroelectric capacitor (), and control data of the MOS transistor () can be held in a floating state. As a result, the ON/OFF data of each pixel are held in the floating state, and display data are rewritten to only a pixel to be changed in a display state of ON/OFF or the like and held data are displayed on a pixel which is not changed in the display data. Consequently, it is possible to obtain a nonvolatile display device capable of reducing power consumption and operating with a small battery.