US 7,002,294 B2Granted

Method of protecting organic optoelectronic devices

AssigneeUniversal Display Corporation

InventorsStephen Forrest, Paul Burrows

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Abstract

The present invention is directed to an organic optoelectronic device, such as an OLED device, provided with a vacuum deposited conformal composite coating for protecting the device from environmental elements such as moisture and oxygen. The present invention is also directed to a method for vacuum depositing a conformal composite coating directly onto an organic optoelectronic device, such as an OLED device, on a substrate. According to one embodiment, the invention provides a protected OLED device comprising a substrate; an active region positioned on said substrate; a first protective layer disposed over the active region; and a second protective layer disposed over the first protective layer, wherein said second protective layer comprises multiple sub-layers that further comprise an alternating series of two or more first polymeric sub-layers and two or more first high density sub-layers.

Claims15

Dependent claims

A method for protecting an OLED device comprising:

(a) providing an OLED device on a substrate, said OLED device having an active region, said active region comprising an anode layer, a cathode layer, and a light-emitting layer disposed between the anode layer and the cathode layer;
(b) depositing a first protective layer of a first material over the active region, said first material comprising an organometallic material;
(c) depositing a second protective layer over the first protective layer, the second protective layer comprising multiple sub-layers that further comprise an alternating series of two or more first polymeric sub-layers and two or more first high density sub-layers, wherein said multiple sub-layers comprise at least one sub-layer of a second material and at least one sub-layer of a third material, and wherein said first, second and third materials differ from one another
wherein the first protective layer protects the active region from damage caused by direct application of the second protective layer.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 10/863,182Filed 8 Jun 2004 · division
Priority: 20 Dec 2001
Published: US 2004/0242116 A12 Dec 2004
Granted: 21 Feb 2006
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

H10K 59/8731
Encapsulations: multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers
H10K 85/311
Coordination compounds: phthalocyanine
H10K 85/324
Metal complexes comprising a group IIIA element, e.g. Tris gallium [Gaq3]: comprising aluminium, e.g. Alq3
H10K 85/631
Organic compounds having low molecular weight: amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine

Family

Application10/028,465Parent of this division · filed 20 Dec 2001
US 2004/0242116 A1Pre-grant publication · published 2 Dec 2004
US 6,765,351 B2Parent of this division
US 2003/0117068 A1Published application
US 7,002,294 B2This patent

From the US filing history. Foreign family members aren’t listed.