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:
Apr. 30, 2013
Filed:
Sep. 24, 2008
Hirofumi Takaki, Aichi, JP;
Shin Ukegawa, Kyoto, JP;
Minoru Maehara, Osaka, JP;
Hirofumi Konishi, Osaka, JP;
Masanao Okawa, Nara, JP;
Hirofumi Takaki, Aichi, JP;
Shin Ukegawa, Kyoto, JP;
Minoru Maehara, Osaka, JP;
Hirofumi Konishi, Osaka, JP;
Masanao Okawa, Nara, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A light control apparatus and a lighting appliance using the same enable increased luminous efficiency in light control and elongated operative life of a light source. The lighting appliance includes a light source and a light control apparatus. The light control apparatus comprises an electric current output circuit that outputs a constant electric current for lighting to a light source configured of an organic electroluminescence device, and a light control circuit that performs light control of the light source by intermittently supplying the constant electric current outputted from the electric current output circuit. The light control apparatus also comprises an electric discharge prevention circuit (diode) that prevents electric discharge of an electric charge charged in a capacitive component of the organic electroluminescence device.