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:
Jan. 01, 2013
Filed:
Mar. 17, 2011
Takayuki Sumida, Mobara, JP;
Shoji Sudo, Kawasaki, JP;
Naoyuki Ito, Yokohama, JP;
Takayuki Ito, Mobara, JP;
Takayuki Sumida, Mobara, JP;
Shoji Sudo, Kawasaki, JP;
Naoyuki Ito, Yokohama, JP;
Takayuki Ito, Mobara, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In a display apparatus including pixels, each of which has organic EL elements which emit red, green, and blue (RGB) colors and a refractive index-control layer, an electrode at a light extraction side of each organic EL element is a silver layer in contact with a charge transport layer, the refractive index-control layer is arranged on the silver layer in common with the organic EL elements which emit RGB colors, and an effective refractive index (n) represented by the following formula is in a range of 1.4 to 2.3.=0.7×+0.3×In the above formula, nindicates the refractive index of the refractive index-control layer, and nindicates the refractive index of the charge transport layer