Low Refractive Layer Hollow Particles Display Color Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing low refractive layers in electronic devices, such as those with quantum dots, require high-temperature processes to form pores, which can damage display elements and limit the use of continuous processes, necessitating the development of a low-temperature method for forming a low refractive layer.
Innovation Solution
A color control member with a low refractive layer composed of a base resin and hollow particles of varying diameters dispersed within, allowing for a low-temperature continuous process, replacing the need for porogen and high-temperature processes, and enhancing reflectivity characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a high-temperature process is used to form pores in the low refractive layer, then the reflectivity characteristics are improved, but the display elements are damaged
Solution Approach 1:
The patent changes the temperature parameter from high-temperature (conventional) to low-temperature (below 100°C) process to form the low refractive layer, thereby preventing damage to display elements while still achieving the desired reflectivity characteristics through the hollow particle structure
Solution Approach 2:
The patent uses a composite structure consisting of a base resin combined with hollow particles (such as hollow glass beads or porous particles) to create the low refractive layer, achieving both the low refractive index for improved reflectivity and compatibility with low-temperature processing
2Ease of manufacture
If a high-temperature process is used to form pores, then the low refractive layer is formed, but continuous processing is limited
Solution Approach 1:
The patent changes the temperature parameter to below 100°C, which enables continuous processing methods such as slot-die coating or spray coating to be used, thereby improving ease of manufacture and continuous production capability
3Loss of energy
If hollow particles with different diameters are used, then light recirculation is improved, but the device complexity increases
Solution Approach 1:
The patent applies local quality by using hollow particles with different diameters (e.g., first hollow particles of 1-10 μm and second hollow particles of 0.1-1 μm) to create different light interaction zones within the low refractive layer, improving light recirculation and energy efficiency without requiring complex external structures
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 low-temperature process prevents damage to display elements, enables a continuous formation method, and improves light efficiency by recirculating light through the use of hollow particles with different diameters, resulting in a refractive index suitable for effective color control in display devices.
Implementation Method 1
improves light efficiency by recirculating light through the use of hollow particles with different diameters
Implementation Method 2
a low refractive layer between the color control layer and the color filter layer, wherein the low refractive layer includes a base resin and a plurality of sets of hollow particles dispersed in the base resin
Data Source
AI summary
A color control member includes a color control layer including a quantum dot and a color filter layer on the color control layer, wherein a low refractive layer may be between the color control layer and the color filter layer. The low refractive layer includes a base resin and a plurality of sets of hollow particles dispersed in the base resin, and each of the hollow particles of each set of the sets of hollow particles may have a spherical shape. The sets of hollow particles may have respective average diameters, and a ratio of two average diameters of the respective average diameters of the sets of hollow particles is about 2:1 to about 60:1, and the low refractive layer including the hollow particles may be formed through a continuous process at a low temperature.