Environmental barrier material for organic light emitting device and method of making
First Claim
1. A flexible environmental barrier for an organic light emitting device, comprising:
- (a) a foundation having;
(i) a top of a first polymer layer, a first ceramic layer on the first polymer layer, and a second polymer layer on the first ceramic layer;
whereupon (b) said organic light emitting device is constructed on the second polymer layer of the top; and
(c) a cover of a third polymer layer with a second ceramic layer thereon and a fourth polymer layer on said second ceramic layer, said cover deposited on said organic light emitting device, the foundation and cover encapsulating the organic light emitting device as said flexible environmental barrier.
2 Assignments
0 Petitions
Accused Products
Abstract
The present invention is an environmental barrier for an OLED. The environmental barrier has a foundation and a cover. Both the foundation and the cover have a top of three layers of (a) a first polymer layer, (b) a ceramic layer, and (c) a second polymer layer. The foundation and/or the cover may have a at least one set of intermediate barrier each having (a) an intermediate polymer layer with (b) an intermediate ceramic layer thereon. In a preferred embodiment, the foundation has a substrate upon which at least a top is deposited. An OLED is constructed upon the top, opposite the substrate. The cover of at least a top then placed over the OLED. The placement may be by gluing or preferably by vacuum deposition. For use as a display, it is preferred that either the ceramic layer(s) in the foundation, cover or both is substantially transparent to the light emitted by the OLED. Each layer of the foundation and the cover is preferably vacuum deposited. Vacuum deposition includes monolayer spreading under vacuum, plasma deposition, flash evaporation and combinations thereof. It is further preferred that all layers are deposited and cured between rolls or rollers to avoid the defects that may be caused by abrasion over a roll or roller.
-
Citations
30 Claims
-
1. A flexible environmental barrier for an organic light emitting device, comprising:
-
(a) a foundation having;
(i) a top of a first polymer layer, a first ceramic layer on the first polymer layer, and a second polymer layer on the first ceramic layer;
whereupon(b) said organic light emitting device is constructed on the second polymer layer of the top; and
(c) a cover of a third polymer layer with a second ceramic layer thereon and a fourth polymer layer on said second ceramic layer, said cover deposited on said organic light emitting device, the foundation and cover encapsulating the organic light emitting device as said flexible environmental barrier. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method of making a flexible environmental barrier for an organic light emitting device, comprising the steps of:
-
(a) assembling a foundation by (i) providing a substrate;
(ii) vacuum depositing a top by vacuum depositing a first polymer layer on the substrate, followed by vacuum depositing a first ceramic layer on the first polymer layer, then vacuum depositing a second polymer layer on the first ceramic layer;
(b) constructing said organic light emitting device on the second polymer layer;
(c) forming a cover by vacuum depositing a third polymer layer followed by vacuum depositing a second ceramic layer on the third polymer layer, then vacuum depositing a fourth polymer layer on the second ceramic layer; and
(d) encapsulating said organic light emitting device by placing said cover over said organic light emitting device thereby forming said flexible environmental barrier encapsulating said organic light emitting device. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
-
-
27. A flexible environmental barrier for an organic light emitting device, comprising:
-
(a) a foundation having (i) at least one intermediate barrier having (a) a first intermediate polymer layer with (b) a first intermediate ceramic layer thereon;
(ii) a top of a first top polymer layer on the substrate, a top ceramic layer on the first top polymer layer, and a second top polymer layer on the top ceramic layer;
whereupon(b) said organic light emitting device is constructed on the second top polymer layer of the top; and
(c) a cover having (i) at least one intermediate barrier on said organic light emitting device, each intermediate barrier having (a) a second intermediate polymer layer with (b) a second intermediate ceramic layer thereon;
(ii) a first cover polymer layer on said at least one intermediate barrier with a second ceramic layer thereon and a second cover polymer layer on said second ceramic layer.
-
-
28. A method of making an environmental barrier for an organic light emitting device, comprising the steps of:
-
(a) constructing a foundation by (i) vacuum depositing at least one intermediate barrier on a substrate each intermediate barrier having (a) a first intermediate polymer layer with (b) a second intermediate ceramic layer thereon onto the substrate;
(ii) vacuum depositing a top of a first top polymer layer on the substrate, a first ceramic layer on the first polymer layer, and a second top polymer layer on the first ceramic layer;
whereupon(b) constructing said organic light emitting device on the second top polymer layer of the top; and
(c) constructing a cover by (i) vacuum depositing at least one intermediate barrier on said organic light emitting device, each intermediate barrier having (a) a second intermediate polymer layer with (b) a second intermediate ceramic layer thereon; and
(ii) vacuum depositing a first cover polymer layer on said at least one intermediate barrier with a second ceramic layer thereon and a second cover polymer layer on said second ceramic layer.
-
-
29. An environmental barrier for an OLED, comprising:
-
(a) a first environmental barrier; and
(b) a second environmental barrier having a first polymer layer with a ceramic layer thereon and a second polymer layer on the ceramic layer;
wherein(c) said OLED is encased between said first environmental barrier and said second environmental barrier; and
(d) either or both of said first and second environmental barrier comprises a top. - View Dependent Claims (30)
-
Specification