IP Library › Granted Patent US 7,615,777
Granted Patent B2
US 7,615,777 · App. 11/082,891 · Granted Nov 10, 2009

Organic electroluminescence device including at least one of a hole injection layer and a hole transport layer

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 7,615,777
App. No.
11/082,891
Granted
Nov 10, 2009
Kind
B2
Abstract

The present invention provides an organic electroluminescence device, by which high brightness is provided in a manner of forming a hole injection or transport layer using a material that lowers an energy barrier. The present invention includes an organic emitting layer between a cathode and an anode and a hole injection and/or transport layer between the anode and the organic emitting layer, wherein at least one of the hole injection and transport layers has a configuration of Formula 1, wherein each of the R1 to R8 is selected from an independently substituted or non-substituted aromatic group, a heterocyclic group, an aliphatic group and hydrogen.

Claims (5)

1. An organic electroluminescence device comprising:

an organic emitting layer between a cathode and an anode; and

a hole injection and/or transport layer between the anode and the organic emitting layer, wherein at least one of the hole injection and transport layers has a configuration of Formula 1,

wherein each of the R1 to R8 is selected from an independently substituted or non-substituted aromatic group, a heterocyclic group, an aliphatic group, wherein at least one of the R1 to R8 is selected from the group consisting of substituted or non-substituted pyridyl, quinolyl, isoquinolyl, fluorenyl, terphenyl, anthryl, phenanthryl, cyclohexyl, phenoxy, tolyloxy, and cyano.

2. The organic electroluminescence device of claim 1 , wherein at least one of the hole injection and transport layers has at least one of the following configurations: