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:
Sep. 13, 2011
Filed:
Oct. 28, 2008
Applicant:
Nobuyuki Ito, Kashiwa, JP;
Inventor:
Nobuyuki Ito, Kashiwa, JP;
Assignee:
Dai Nippon Printing Co., Ltd., Shinjuku-ku, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 51/50 (2006.01); H01L 51/52 (2006.01); H05B 33/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A light-emitting device comprising a pair of baseplates respectively having surfaces facing each other, each surface having an electrode formed thereon, and a light-emitting layer sandwiched between the two baseplates. The light-emitting layer contains an ionic liquid and a light-emitting material dissolved in the ionic liquid. Since the light-emitting device is made without using any organic solvent, it is highly safe, does not deteriorate in emission characteristics, and requires a decreased number of constituent materials.