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:
Dec. 29, 2020
Filed:
Feb. 09, 2018
Applicant:
Lumiotec Inc., Yonezawa, JP;
Inventor:
Junichi Tanaka, Yonezawa, JP;
Assignee:
LUMIOTEC INC., Yamagata, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 51/52 (2006.01); H01L 51/50 (2006.01);
U.S. Cl.
CPC ...
H01L 51/5278 (2013.01); H01L 51/504 (2013.01); H01L 51/5056 (2013.01);
Abstract
An organic electroluminescent device having a white light, obtained by light emission from a plurality of light emission units, that comprises red light, green light, and blue light. Among the distribution characteristics of light emitted inside a substrate, the brightness of the white light has a maximum value within an angle range of 0-15° from an axis perpendicular to the planar direction of the substrate and the spectral radiance of the blue light at the maximum emission wavelength has a maximum value within the angle range of 0-20° from the axis perpendicular to the planar direction of the substrate.