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:
May. 30, 2017
Filed:
Apr. 04, 2013
Sumitomo Chemical Company, Limited, Chuo-ku, Tokyo, JP;
Kyoko Yamamoto, Tsukuba, JP;
Yoshinobu Ono, Niihama, JP;
SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo, JP;
Abstract
Organic electroluminescent element capable of conveniently and precisely establishing the emission color of the element. The organic electroluminescent element includes a pair of electrodes and a light-emitting layer provided between the electrodes and presents an emission color at the coordinate Ao (Xo, Yo) in CIE 1931 chromaticity coordinate system. The light-emitting layer contains in the same layer, a light emitting material A1 that presents an emission color at the coordinate A1 (x1, y1) in the CIE 1931 chromaticity coordinate system and a light emitting material A2 that presents an emission color at the coordinate A2 (x2, y2) in the CIE 1931 chromaticity coordinate system; a distance Lbetween the coordinates Ao (Xo, Yo) and A1 (x1, y1) in the CIE 1931 chromaticity coordinate system satisfies L≦0.20; and a distance Lbetween the coordinates A1 (x1, y1) and A2 (x2, y2) in the CIE 1931 chromaticity coordinate system satisfies 0.13≦L≦0.35 s.