logo

For the Inventor, By the Inventor

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 10367148 B1

PDFFull Text
Date of Patent:
Jul. 30, 2019

Filed:

May. 26, 2015

Light-emitting device, electronic apparatus, and inspection method

Applicant:

Seiko Epson Corporation, Tokyo, JP;

Inventors:

Tetsuji Fujita, Chino, JP;

Yuiga Hamade, Fujimi-machi, JP;

Assignee:

Seiko Epson Corporation, , JP;

Attorney:

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

Primary Examiner:

Huy Q Phan

Assistant Examiner:

Raul J Rios Russo

Int. Cl.
CPC ...
G01R 31/00 (2006.01); H01L 51/00 (2006.01); C07D 513/04 (2006.01); C09K 11/06 (2006.01); H01L 51/50 (2006.01); C07F 5/02 (2006.01); C09K 11/02 (2006.01); G01R 31/44 (2006.01);
U.S. Cl.
CPC ...
H01L 51/0061 (2013.01); C07D 513/04 (2013.01); C07F 5/022 (2013.01); C09K 11/025 (2013.01); C09K 11/06 (2013.01); G01R 31/44 (2013.01); H01L 51/008 (2013.01); H01L 51/0058 (2013.01); H01L 51/0072 (2013.01); H01L 51/50 (2013.01); C07F 5/02 (2013.01); C09K 2211/1007 (2013.01); C09K 2211/1014 (2013.01); C09K 2211/1022 (2013.01); C09K 2211/1081 (2013.01); H01L 51/0071 (2013.01); H01L 51/5012 (2013.01); H01L 51/5072 (2013.01); H01L 2251/533 (2013.01); H01L 2251/558 (2013.01);
Abstract

To provide a light-emitting element which emits light in a near-infrared region and has high efficiency and long life, and a light-emitting device, an authentication device, and an electronic apparatus, each of which includes this light-emitting element. A light-emitting deviceof the invention includes a light-emitting elementA including an anode, a cathode, and a light-emitting layerwhich is provided between the anodeand the cathodeand emits light in a near-infrared region by applying a current between the anodeand the cathode, wherein the device emits visible light with a luminance of 5 cd/mor more when a current is applied between the anodeand the cathodeat a current density of 300 A/cmor less.

Find Patent Forward Citations

Loading…