IP Library › Granted Patent US 9,666,826
Granted Patent B2
US 9,666,826 · App. 11/412,676 · Granted May 30, 2017

Electroluminescent device including an anthracene derivative

View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 9,666,826
App. No.
11/412,676
Granted
May 30, 2017
Kind
B2
Abstract

An electroluminescent device comprises a cathode, an anode, and has therebetween a light emitting layer (LEL), the device further containing an electron transport layer (ETL) comprising an anthracene compound on the cathode side of the LEL and an organic electron injection layer (EIL) between the ETL and the cathode comprising a phenanthroline compound, wherein the thickness of the EIL and LEL are such that the ratio of the thickness of the EIL to LEL is greater than 0.125.

Claims (17)

1. An electroluminescent device comprising

a cathode, an anode, and having therebetween a light emitting layer (LEL),

wherein the LEL comprises a dopant and an anthracene host;

the device further containing an electron transport layer (ETL) comprising an anthracene compound on the cathode side of the LEL, and

an organic electron injection layer (EIL) between the ETL and the cathode, the EIL comprising a phenanthroline compound,

wherein the thickness of the EIL and LEL are such that the ratio of the thickness of the EIL to LEL is greater than 0.15, but not greater than 0.75,

wherein the ETL is disposed adjacent to the LEL, wherein the thickness of the ETL and LEL are such that the ratio of the thickness of the ETL to LEL is at least 0.625, but not greater than 1.63, and

wherein the phenanthroline compound in the EIL is

and wherein the anthracene compound in the ETL is

2. An electroluminescent device comprising

a cathode, an anode, and having therebetween a light emitting layer (LEL),

wherein the LEL comprises a dopant and an anthracene host;

the device further containing an electron transport layer (ETL) comprising an anthracene compound on the cathode side of the LEL, and

an organic electron injection layer (EIL) between the ETL and the cathode, the EIL comprising a phenanthroline compound,

wherein the thickness of the EIL and LEL are such that the ratio of the thickness of the EIL to LEL is greater than 0.15, but not greater than 0.75,

wherein the phenanthroline compound in the EIL is

and wherein the anthracene compound in the ETL is

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 11, 2010
From: EASTMAN KODAK COMPANY
To: GLOBAL OLED TECHNOLOGY LLC
Reel/Frame 024068/0468 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 27, 2006
From: KONDAKOV, DENIS Y.; CONLEY, SCOTT R.; KLUBEK, KEVIN P.
To: EASTMAN KODAK COMPANY
Reel/Frame 017836/0576 →