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. 31, 2011
Filed:
Aug. 04, 2008
Applicants:
Yu-han Chien, Hsinchu, TW;
Shih-chieh Hsu, Hsinchu, TW;
Yu-yang Chang, Hsinchu, TW;
Cheng-chung Lee, Hsinchu, TW;
Inventors:
Yu-Han Chien, Hsinchu, TW;
Shih-Chieh Hsu, Hsinchu, TW;
Yu-Yang Chang, Hsinchu, TW;
Cheng-Chung Lee, Hsinchu, TW;
Assignee:
Industrial Technology Research Institute, Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 51/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An electroluminescent device includes a first electrode layer, a phosphor layer on the first electrode layer, a layer with permanent accumulated charges on the phosphor layer, and a second electrode layer on the layer with permanent accumulated charges. By the addition of the layer with permanent accumulated charges, an external driving voltage applied to the luminescent device can be reduced.