Organic light emitting device having a protective barrier
AssigneeInternational Display Systems, Inc.
InventorsChung J. Lee, Chieh Chen, Atul Kumar
Life of this patent
Estimating the term…
Abstract
A method of forming a protective barrier in an organic light emitting device is disclosed, wherein the organic light emitting device is formed on a substrate and includes a plurality of layers of materials, the plurality of layers of materials including an organic light emitting layer. The method includes forming an inorganic layer and a semi-crystalline parylene-based polymer layer over an underlying layer, wherein the semi-crystalline parylene-based polymer layer is formed via transport polymerization of a reactive intermediate species. Organic light emitting devices having barriers are also disclosed.
Claims36
A method of forming a protective barrier for an organic light emitting device, wherein the organic light emitting device is formed on a substrate and includes a plurality of layers of materials, the plurality of layers of materials including an organic light emitting layer, the method comprising:
- forming a semi-crystalline parylene-based polymer layer and an inorganic layer over an underlying layer, wherein the semi-crystalline parylene-based polymer layer is formed via transport polymerization of a reactive intermediate species, and wherein the substrate has a temperature below a melting temperature of the reactive intermediate species during transport polymerization.
A method of forming a protective barrier in an organic light emitting device;
- the organic light emitting device including a plurality of layers of materials formed on a substrate, the plurality of layers of materials including an organic light-emitting layer, the method comprising:
- forming an inorganic layer and a parylene-based polymer layer over an underlying layer;
- and annealing the parylene-based polymer layer.
A method of protecting an organic light emitting device from environmental degradation, the organic light emitting device including a plurality of device layers formed on a substrate, the method comprising:
- forming a protective barrier layer over the organic light emitting device under a reduced pressure environment, thereby encapsulating the organic light emitting device between a substrate and a protective barrier layer to form an encapsulated organic light emitting device, wherein the protective barrier layer includes a first semi-crystalline parylene-based polymer layer, an inorganic layer, and a second semi-crystalline parylene-based polymer layer;
- transferring the temporary encapsulated organic light emitting device out of the reduced pressure environment;
- and
- sealing a protective structure over the protective barrier layer under atmospheric conditions.
Dependencies are inferred from the claim text.