Color Change Member Protective Layers for Solvent Diffusion
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Solution Overview
Problem
The reliability of color filters in display devices is compromised due to low heat resistance, leading to adverse effects from residual solvents and degassed components, which can cause mixing and deterioration, especially during thermal curing processes.
Innovation Solution
A color change member is designed with a first protective layer on the light incident surface and a second protective layer on at least a part of the side surface, preventing diffusion of residual solvents and degassed components and enhancing the reliability by encapsulating them within a defined space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If color filters are made of organic material and thermally cured at high temperature, then curing completeness is improved, but components with low heat resistance deteriorate
Solution Approach 1:
The invention divides the protective structure into multiple segments: a first protective layer covering the light incident surface, a second protective layer covering at least part of the side surface, and optionally a third protective layer covering the light emission surface. This segmented approach allows each layer to perform specific protective functions, enabling complete thermal curing of the color filter while protecting heat-sensitive components through the barrier provided by these protective layers.
2Temperature
If color filters are not sufficiently cured, then heat resistance is maintained, but residual solvents and degassed components cause mixing and deterioration
Solution Approach 1:
The protective layers are formed in advance before the thermal curing process. This preliminary protective action creates a barrier that prevents residual solvents and degassed components from causing mixing between adjacent color filters during the subsequent high-temperature curing process, allowing complete curing without compromising reliability.
3Reliability
If protective layers are added to prevent diffusion, then reliability is improved, but device complexity increases
Solution Approach 1:
The protective layers are applied selectively to specific surfaces of the color filter structure - the light incident surface, side surfaces, and/or light emission surface - rather than uniformly throughout. This local application approach provides targeted protection where diffusion risks exist while minimizing unnecessary structural complexity in regions where protection is not required.
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 configuration effectively suppresses the deterioration caused by residual solvents and degassed components, ensuring improved reliability and performance of the color filters by preventing mixing and peeling, even when high-temperature curing is challenging.
Implementation Method 1
the first protective layer is provided on the light incident surface of the color change layer, and the second protective layer is provided on at least a part of the side surface of the color change layer. Accordingly, the color change layer is prevented from mixing with adjacent color change layers due to diffusion of residual solvents and degassed components in the color change layer.
Data Source
AI summary
A color change member includes: a color change layer that has a light incident surface, a light emission surface, and a side surface; a first protective layer that is provided on the light incident surface of the color change layer; and a second protective layer that is provided on at least a part of the side surface of the color change layer.