OLED Composite Silicone Network for High-Resolution Patterning
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Solution Overview
Problem
Current technologies face challenges in implementing ultra-high-resolution RGB patterns for organic light-emitting diodes (OLEDs) due to the low durability of organic light-emitting materials, which limits the application of advanced patterning methods like photolithography and dry etching.
Innovation Solution
The development of an organic light-emitting composite with a silicone (—Si—O—Si—) network, integrated with a curable phosphorescent host, a curable phosphorescent dopant, and an organic silica precursor, which enhances chemical resistance and etching resistance through a simultaneous curing reaction or cross-curing reaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If photolithography and dry etching methods are applied to organic light-emitting materials, then ultra-high-resolution patterns can be implemented, but the materials lack the necessary durability to withstand the physical and chemical damage during these processes
Solution Approach 1:
The patent creates a composite material system consisting of a phosphorescent host material, a phosphorescent dopant, and a silicone network. The silicone network is integrated into the host material structure to provide mechanical strength and chemical resistance, enabling the organic light-emitting material to withstand photolithography and dry etching processes while maintaining its light-emitting functionality and achieving ultra-high-resolution patterns.
2Reliability
If cross-linking functional groups are introduced into phosphorescent dopant materials to improve chemical resistance, then solvent resistance is secured, but photolithography and dry etching methods cannot be applied due to insufficient etching resistance
Solution Approach 1:
The patent develops a composite material where the phosphorescent host material contains cross-linking functional groups that form a three-dimensional silicone network. This network structure provides both chemical resistance to solvents and etching resistance to fluorine-based etchants, making the material compatible with both photolithography and dry etching processes while maintaining phosphorescent emission properties.
Solution Approach 2:
The patent modifies the molecular structure of the phosphorescent host material by introducing cross-linking functional groups (such as silane groups) that can form a three-dimensional network. This structural parameter change transforms the material properties from simple solution-processable organic compound to a durable cross-linked network that resists both chemical solvents and physical etching, enabling advanced patterning techniques.
3Manufacturing precision
If polymer semiconductor materials are used to achieve high-resolution patterns through photolithography, then pattern implementation is enabled, but the technology has low industrial applicability as it is limited to polymer materials rather than small-molecule organic luminants
Solution Approach 1:
The patent changes the molecular weight parameter of the phosphorescent host material, using small-molecule organic compounds instead of polymer semiconductors. By introducing cross-linking functional groups to these small molecules, the patent achieves the necessary durability for photolithography and dry etching processes, thereby enabling high-resolution patterning with small-molecule materials that are more suitable for industrial OLED manufacturing.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables the direct application of photolithography and dry etching methods to OLEDs, allowing for the implementation of ultra-fine patterns while maintaining high luminescence efficiency and excellent operating lifespan.
Implementation Method 1
an organic silica precursor forming a silicone (—Si—O—Si—) network together with the curable phosphorescent host and the curable phosphorescent dopant
Implementation Method 2
a simultaneous curing reaction or cross-curing reaction between the curable phosphorescent host and the curable phosphorescent dopant and the organic silica precursor
Implementation Method 3
enhances chemical resistance and etching resistance through a simultaneous curing reaction or cross-curing reaction
Implementation Method 4
enhances chemical resistance and etching resistance through a simultaneous curing reaction or cross-curing reaction
Implementation Method 5
maintaining high luminescence efficiency and excellent operating lifespan
Data Source
AI summary
Disclosed are an organic light-emitting composite, a high-resolution patterning method for an organic light-emitting thin film including the same, an organic light emitting composition including the organic light-emitting composite, and an organic light-emitting device including the organic light emitting composition. More particularly, the organic light-emitting composite includes a curable phosphorescent host; a curable phosphorescent dopant; and an organic silica precursor forming a silicone (—Si—O—Si—) network together with the curable phosphorescent host and the curable phosphorescent dopant, wherein the curable phosphorescent host and the curable phosphorescent dopant include a cross-linking functional group.