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:
Jun. 19, 2007
Filed:
Mar. 07, 2003
Hitoshi Kuma, Sodegaura, JP;
Mitsuru Eida, Sodegaura, JP;
Chishio Hosokawa, Sodegaura, JP;
Kenichi Fukuoka, Sodegaura, JP;
Hitoshi Kuma, Sodegaura, JP;
Mitsuru Eida, Sodegaura, JP;
Chishio Hosokawa, Sodegaura, JP;
Kenichi Fukuoka, Sodegaura, JP;
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Abstract
An organic EL element () emits light containing a blue component (B) and a component (θ) with a peak in 500 to 600 nm. A red converting member () has an excitation spectrum with a peak in 500 to 600 nm. The red converting member receives light from the organic EL element () and converts the blue component (B) to a red component (R). At this time, the luminance of the red component (R) is enhanced since the member () is strongly excited by the component (θ). As a result, the white balance of three colors is improved. Therefore a color emission device () can be provided where the intensity of red light is enhanced.