Anti-Reflection Coating Composition Using Hollow Inorganic Oxide Particles
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for preparing anti-reflection coatings using hollow particles are complex, expensive, and impractical for industrial production due to the need for high-temperature treatments and strong acids or bases, leading to issues with particle agglomeration and non-uniform distribution.
Innovation Solution
A coating composition comprising hollow inorganic oxide particles dispersed in an adhesive with a hydrophobic organic solvent, where the particles are chemically bonded to the adhesive, allowing for normal temperature processing and simplified preparation, suitable for industrial mass production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hollow particles are prepared using conventional template methods, then hollow particles can be obtained, but the preparation process becomes complex and expensive due to high-temperature calcination or strong acid/base corrosion
Solution Approach 1:
The invention extracts and removes the template material from the composite particles through dissolution in water, separating the hollow particles from the template without requiring high-temperature calcination or strong acid/base corrosion. This simplifies the preparation process while maintaining hollow particle quality.
Solution Approach 2:
The invention changes the removal method parameter from thermal/chemical degradation (high-temperature calcination or strong acid/base) to simple water dissolution, fundamentally altering the process conditions to be milder and more cost-effective while achieving the same hollow particle formation.
2Ease of operation
If hollow particles are mixed with adhesive and solvent, then coating can be applied, but hollow particles easily agglomerate during mixing due to collision and cannot retain dimensional stability
Solution Approach 1:
The invention performs preliminary action by pre-forming the hollow particles with stable structures before mixing with adhesive and solvent. The hollow particles are prepared in advance with controlled shell thickness and uniform morphology, which prevents agglomeration during subsequent mixing and coating processes.
Solution Approach 2:
The invention uses composite material structure where a shell material forms a protective layer around the hollow core, creating structurally stable hollow particles that resist deformation and agglomeration during mixing and coating operations.
3Use of energy by moving object
If hollow particles are used in anti-reflection coating, then light transmittance is improved, but the refractive index control is limited when using solid particles
Solution Approach 1:
The invention applies local quality by creating hollow particles with controlled internal void spaces, where the empty interior provides different optical properties compared to solid particles. This local structural differentiation enables precise refractive index control for optimal anti-reflection performance.
Solution Approach 2:
The invention uses porous material structure of hollow particles, where the internal voids and shell structure create effective refractive index values between the solid material and air, enabling fine-tuned optical properties for anti-reflection coatings.
4Reliability
If high-temperature treatment is used to remove template, then template can be removed, but common plastic substrates such as PET, PC and PMMA cannot withstand the treatment
Solution Approach 1:
The invention changes the template removal parameter from high-temperature treatment to water-based dissolution at lower temperatures, making the process compatible with heat-sensitive plastic substrates like PET, PC, and PMMA while still achieving effective template removal.
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
The solution achieves high dispersibility and uniform distribution of hollow particles, improving light transmittance and reducing reflection loss, making it suitable for industrial applications in fields like displays and solar energy.
Implementation Method 1
hollow particles are dispersed in the adhesive and are chemically bonded with the adhesive
Implementation Method 2
a gradient variation of the refractive index is generated between the substrate (for a glass substrate, the refractive index is about 1.52) and the air (the refractive index is about 1), so as to reduce the reflected light loss
Implementation Method 3
hollow particles are dispersed in the adhesive and are chemically bonded with the adhesive
Data Source
AI summary
The present invention relates to an anti-reflection coating composition containing hollow particles, an adhesive, and a hydrophobic organic solvent, wherein the weight ratio of the hollow particles to the solids content of the adhesive is in the range of 1:2 to 1:20. The present invention also provides a method for producing the anti-reflection coating composition.