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US 7,354,661 B2Granted
Electroluminescent devices
AssigneeOled-T Limited
InventorPoopathy Kathirgamanathan
Life of this patent
Estimating the term…
Abstract
An electroluminescent device has, as the electroluminescent layer, a metal compound selected from organic complexes of non rare earth metals.
Claims17
An electroluminescent device comprising:
- (i) a first electrode;
- (ii) a second electrode;
- and
- (iii) a layer of an electroluminescent material positioned between said first and second electrodes, wherein said electroluminescent material contains a blue light-emitting metal compound selected from the group consisting of chemical compounds having one of the following formulas
1 more element
An electroluminescent device comprising:
- (i) a first electrode;
- (ii) a second electrode;
- (iii) a layer of an electroluminescent material positioned between said first and second electrodes, wherein said electroluminescent material contains a blue light-emitting metal compound having one of the following formulas
- (iv) a layer of a hole transmitting material between the first electrode and the layer of electroluminescent material;
- and
- (v) a layer of an electron transmitting material between the second electrode and the layer of electroluminescent material.
3 more elements
An electroluminescent device comprising:
- (i) a first electrode;
- (ii) a second electrode;
- (iii) a layer of an electroluminescent material positioned between said first and second electrodes, wherein said electroluminescent material contains a blue light-emitting metal compound having one of the following formulas
- (iv) a layer of a hole transmitting material between the first electrode and the layer of electroluminescent material, wherein the layer of hole transmitting material comprises N,N′-diphenyl-N,N′-bis(3-methylphenyl)-1,1′-biphenyl-4,4′-diamine (TPD);
- and
- (v) a layer of an electron transmitting material between the second electrode and the layer of electroluminescent material, wherein the layer of electron transmitting material comprises aluminum quinolate or lithium quinolate.
3 more elements
An electroluminescent device comprising:
- (i) a first electrode;
- (ii) a second electrode;
- and
- (iii) a layer of an electroluminescent material positioned between said first and second electrodes, wherein said electroluminescent material contains a blue light-emitting metal compound having the following formula
1 more element
Dependencies are inferred from the claim text.