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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.:

US 10050209 B1

PDFFull Text
Date of Patent:
Aug. 14, 2018

Filed:

May. 18, 2016

Light-emitting element, light-emitting device, authentication device, and electronic apparatus

Applicant:

Seiko Epson Corporation, Tokyo, JP;

Inventors:

Yuiga Hamade, Fujimi, JP;

Tetsuji Fujita, Chino, JP;

Assignee:

Seiko Epson Corporation, , JP;

Attorney:

Harness, Dickey & Pierce, P.L.C.

Primary Examiner:

Eli Mekhlin

Int. Cl.
CPC ...
B32B 9/00 (2006.01); B32B 19/00 (2006.01); H01L 51/00 (2006.01); C09K 11/06 (2006.01); C09K 11/02 (2006.01); H05B 33/14 (2006.01); H05B 33/20 (2006.01); H01L 51/50 (2006.01);
U.S. Cl.
CPC ...
H01L 51/0061 (2013.01); C09K 11/025 (2013.01); C09K 11/06 (2013.01); H01L 51/0052 (2013.01); H01L 51/0058 (2013.01); H01L 51/0071 (2013.01); H01L 51/0072 (2013.01); H01L 51/5004 (2013.01); H05B 33/14 (2013.01); H05B 33/20 (2013.01); C09K 2211/1007 (2013.01); C09K 2211/1014 (2013.01); C09K 2211/1081 (2013.01); H01L 51/0054 (2013.01); H01L 51/0059 (2013.01); H01L 51/508 (2013.01); H01L 51/5012 (2013.01); H01L 2251/556 (2013.01);
Abstract

A light-emitting element includes an anode, a cathode, a light-emitting layer which is provided between the anode and the cathode and emits light in a wavelength range of 700 nm or more by conducting electricity between the anode and the cathode, and an electron transport layer which is provided between the light-emitting layer and the cathode, and includes a first electron transport layer located on the cathode side and a second electron transport layer located on the light-emitting layer side, wherein organic materials contained in the light-emitting layer, a hole injection layer, the first electron transport layer, and the second electron transport layer have a glass transition temperature Tg of 135° C. or higher or do not have a glass transition temperature.

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