Method for producing an organic light-emitting component and organic light-emitting component

The use of perhydropolysilazane or polysilazane as a planarization layer in organic light-emitting components addresses adhesion and permeability issues, resulting in a robust and transparent device suitable for automotive use.

DE102016106847B4Active Publication Date: 2026-03-19PICTIVA DISPLAY INT LTD
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Patent Information

Application Number
DE102016106847
Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
Filing Date
2016-04-13
Publication Date
2026-03-19
Estimated Expiration
2036-04-13

AI Technical Summary

Technical Problem

Current methods for manufacturing organic light-emitting components using organic polymers for planarization, encapsulation, or insulation result in poor adhesion, high permeability to water and oxygen, and significant outgassing, making them unsuitable for demanding environments like the automotive industry.

Method used

A method involving the application of perhydropolysilazane or polysilazane using wet chemical processes to create a planarization layer between electrodes, which is then cured to form a silicon oxynitride or silicon dioxide-like material, providing improved adhesion and barrier properties against moisture and oxygen.

Benefits of technology

The method produces a cost-effective, flexible, and robust organic light-emitting device with reduced permeability to water and oxygen, suitable for automotive applications, maintaining transparency and stability under temperature stress.

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Abstract

Method for the production of an organic light-emitting device (100) comprising the steps: A) Providing a substrate (1), B) Applying a first electrode (2) to the substrate (1), C) Application of at least one organic functional layer stack (5) designed to emit radiation and arranged at least above the first electrode (2), D) Applying a second electrode (6) over the organic functional layer stack (5), and E) Application of perhydropolysilazane (4) by wet chemical processes and curing of perhydropolysilazane (4) to produce at least one planarization layer (3) arranged between the first electrode (2) and the substrate (1), wherein a layer structure with at least one layer pair (10) is produced, wherein each layer pair (10) is formed from the planarization layer (3) and a layer (9) produced by atomic layer deposition or chemical vapor deposition, wherein the layer (9) produced by atomic layer deposition or chemical vapor deposition completely surrounds both the surface and the side faces of the planarization layer (3), wherein at least one layer pair (10) is followed by a further planarization layer (31), wherein the further planarization layer (31) surrounds both the side faces and the surfaces of the layer (9) produced by atomic layer deposition or chemical vapor deposition in a form-fitting and material-bonded manner, and wherein the first electrode (2) and metallizations (8) are arranged above the planarization layer (3).
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