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. 03, 2018
Filed:
Jul. 07, 2016
Pioneer Corporation, Kawasaki-shi, Kanagawa, JP;
Tohoku Pioneer Corporation, Tendo-shi, Yamagata, JP;
Shuichi Seki, Yonezawa, JP;
Shigehiro Umetsu, Yonezawa, JP;
Hiroki Tan, Yonezawa, JP;
Katsuhiro Kanauchi, Yonezawa, JP;
PIONEER CORPORATION, Tokyo, JP;
TOHOKU PIONEER CORPORATION, Yamagata, JP;
Abstract
A light-emitting device () includes a first light-emitting region () and a second light-emitting region (). The first light-emitting region () emits a light ray having a first color by making a first light-emitting layer group including at least two or more kinds of light-emitting layers emit light. In addition, the second light-emitting region () emits a light ray having the first color (for example, daylight color, natural white color, white color, warm white color, or incandescent color) by making a second light-emitting layer group including at least two or more kinds of light-emitting layers emit light. In addition, at least one kind of light-emitting layer included in the second light-emitting layer group emits a light ray having a different spectrum peak from all of the light-emitting layers included in the first light-emitting layer group. Therefore, the color-rendering properties of light emitted from the light-emitting device () are improved.