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:
Jul. 15, 2003
Filed:
Feb. 28, 2002
Kazuhiko Hayashi, Tokyo, JP;
Takashi Fukuchi, Tokyo, JP;
Shinnzo Tsuboi, Tokyo, JP;
Atsushi Oda, Tokyo, JP;
NEC Corporation, , JP;
Abstract
An organic light-emitting device is provided, which increases the proportion of available light as much as possible and which produces higher brightness with less input power. The light-emitting device comprises: (a) a base having a surface; (b) a first electrode and a second electrode formed on the surface of the base; the first and second electrodes being located to be opposite to each other; (c) a light-emitting material layer located between the first and second electrodes; the light-emitting material layer having a first part and a second part; the first part being inclined with respect to the surface of the base at an inclination angle within a range from 45° to 90°; the second part being approximately parallel to the surface of the base; and (d) a carrier-blocking layer formed between the first electrode and the second part of the light-emitting material layer; the carrier-blocking layer having a function of blocking carriers emitted from the first electrode into the light-emitting material layer. The first part of the light-emitting material layer forms as a light-emitting region while the second part of the light-omitting material layer forms a non-light-emitting region. The output light is emitted from the light-emitting material layer by way of the base or the second electrode.