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. 04, 2014
Filed:
Feb. 22, 2011
Hideharu Kawachi, Kobe, JP;
Shin Ukegawa, Kyotanabe, JP;
Yoshinori Tsuzuki, Kyoto, JP;
Tadasi Nisimura, Kyoto, JP;
Hiroyuki Hirose, Nishinomiya, JP;
Masanao Okawa, Nara, JP;
Hideharu Kawachi, Kobe, JP;
Shin Ukegawa, Kyotanabe, JP;
Yoshinori Tsuzuki, Kyoto, JP;
Tadasi Nisimura, Kyoto, JP;
Hiroyuki Hirose, Nishinomiya, JP;
Masanao Okawa, Nara, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A display deviceincludes light emitting sectionsof different luminous colors disposed between anode and cathode electrodes, current control unitsfor controlling currents supplied to the light emitting sectionsto desired current levels, respectively, and an emergency power supply for supplying a current to the current control unitsin an emergency in which a commercial power source does not perform a desired function. When operated by the emergency power supply, the current control units turn on and off the light emitting sectionsof different luminous colors such that they are turned on during different periods of time. When the emergency power supply is used, the display devicecontrols turning on of the planar light emitting element using an organic EL light emitting element depending on luminous colors thereof, thereby suppressing the power consumption of the emergency power supply.