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:
Jul. 28, 2015
Filed:
Oct. 08, 2010
Ryo Naraoka, Sodegaura, JP;
Hitoshi Kuma, Sodegaura, JP;
Hiroyuki Saito, Sodegaura, JP;
Chishio Hosokawa, Sodegaura, JP;
Ryo Naraoka, Sodegaura, JP;
Hitoshi Kuma, Sodegaura, JP;
Hiroyuki Saito, Sodegaura, JP;
Chishio Hosokawa, Sodegaura, JP;
IDEMITSU KOSAN CO., LTD., Tokyo, JP;
Abstract
A top-emission organic electroluminescence device () includes in order a first electrode (), one or more organic layers (B) including a blue-emitting layer (B), a second electrode (), and a capping layer (), wherein the capping layer () is formed of a material that satisfies the expression 'n(λ=430 nm)−n(λ=460 nm)>0.08' (where, n(λ=x nm) indicates a refractive index at a wavelength of x nm) and has an extinction coefficient of 0.1 or less at a wavelength of 430 to 500 nm.