Protected organic optoelectronic devices
First Claim
1. An OLED device comprising:
- (a) a substrate;
(b) an active region positioned over said substrate, wherein said active region comprises an anode layer, a cathode layer and a light-emitting layer disposed between the anode layer and the cathode layer;
(c) a composite barrier layer disposed over said active region, over a surface of said substrate or both over said active region and over a surface of said substrate, said composite barrier layer comprising an alternating series of one or more polymeric planarizing sublayers and one or more high-density sublayers;
(d) a thin carbon layer disposed between at least one polymeric planarizing sublayer and a region of said OLED device selected from the group consisting of said substrate, an adjacent high-density sublayer, and said active region.
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Accused Products
Abstract
Disclosed are protected OLED devices comprising (a) a substrate; (b) an active region positioned on the substrate, wherein the active region comprises an anode layer, a cathode layer and a light-emitting layer disposed between the anode layer and the cathode layer; (c) a composite barrier layer disposed over the active region and/or over a surface of the substrate, the composite barrier layer comprising an alternating series of one or more polymeric planarizing sublayers and one or more high-density sublayers; and, (d) a thin carbon layer disposed between at least one polymeric planarizing sublayer and a region of the OLED device that is selected from the group consisting of the substrate, an adjacent high-density sublayer, and the active region. The composite barrier layer is provided to protect the active region of the OLED device from environmental elements such as oxygen and moisture. The thin carbon layer is provided to improve adhesion between adjacent layers. In other embodiments, the present invention provides an OLED device in which a surface of the substrate and/or a surface of a polymeric planarizing sublayer has been roughened by a plasma or chemical etching treatment to improve adhesion thereto.
140 Citations
34 Claims
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1. An OLED device comprising:
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(a) a substrate;
(b) an active region positioned over said substrate, wherein said active region comprises an anode layer, a cathode layer and a light-emitting layer disposed between the anode layer and the cathode layer;
(c) a composite barrier layer disposed over said active region, over a surface of said substrate or both over said active region and over a surface of said substrate, said composite barrier layer comprising an alternating series of one or more polymeric planarizing sublayers and one or more high-density sublayers;
(d) a thin carbon layer disposed between at least one polymeric planarizing sublayer and a region of said OLED device selected from the group consisting of said substrate, an adjacent high-density sublayer, and said active region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An OLED device comprising:
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(a) a substrate;
(b) an active region positioned over said substrate, wherein said active region comprises an anode layer, a cathode layer and a light-emitting layer disposed between the anode layer and the cathode layer;
(c) a composite barrier layer disposed over said active region, over a surface of said substrate or both over said active region and over a surface of said substrate, said composite barrier layer comprising an alternating series of one or more polymeric planarizing sublayers and one or more high-density sublayers;
wherein a surface of said substrate or of at least one of said polymeric planarizing sublayers has been subjected to a plasma treatment or chemical etching treatment to provide a roughened surface.- View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. An OLED device comprising:
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(a) a transparent flexible polymeric substrate;
(b) an active region positioned over said transparent flexible substrate, wherein said active region comprises an anode layer, a cathode layer and a light-emitting layer disposed between the anode layer and the cathode layer;
(c) one or more composite barrier layers disposed over said active region and over a surface of said transparent flexible substrate, said composite barrier layers comprising an alternating series of one or more polymeric planarizing sublayers and one or more high-density sublayers; and
(d) a thin carbon layer having a thickness of from about 3 to about 500 Å
disposed between a polymeric planarizing sublayer and a surface of said substrate.
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Specification