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. 08, 2004
Filed:
Nov. 28, 2001
Chishio Hosokawa, Sodegaura, JP;
Demitsu Kosan Co., Ltd., , JP;
Abstract
An organic EL display device including first electrodes and second electrodes to which a voltage is applied; conductive color changing layers capable of being electrically connected to the first electrodes; and an organic luminescent medium placed between the second electrodes and the color changing layers. When a voltage is applied between the first and second electrodes, an electric field is generated between the second electrodes and the color changing layers in contact with the first electrodes. As a result, the organic luminescent medium emits light therebetween. Because no or little light interference exists between the first and second electrodes, chromaticity does not change even if a viewing angle is changed. Because the color changing layers can be placed in contact with or very close to the organic luminescent medium, a color mixture due to changes in viewing angle hardly occurs.