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:
Apr. 24, 2007
Filed:
Feb. 13, 2004
Applicants:
Naoyuki Ueda, Kanagawa, JP;
Yasunori Kuima, Tokyo, JP;
Shinichiro Tamura, Kanagawa, JP;
Inventors:
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 33/26 (2006.01);
U.S. Cl.
CPC ...
Abstract
A light-emitting device comprises a layer including an emission region and provided between an anode and a cathode wherein the anode has a visible light (with a wavelength of 380 to 780 nm) transmittance ranging from 35 to 75%, and the anode has a work function of 3.0 to 7.0 eV whereby the device has an improved contrast characteristic while keeping high luminance.
Ueda, Naoyuki. (2007). Light-emitting device and its use (U.S. Patent No. 7208868). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7208868
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile