Color Filter Partition Wall for Quantum Dot Luminance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing color filters using pigments or dyes in liquid crystal displays face reduced light transmission efficiency, leading to lower image quality and luminance, while quantum dot-based filters suffer from instability and reduced luminous efficiency due to crystal formation, necessitating improved manufacturing techniques for enhanced luminance and power efficiency.
Innovation Solution
A color filter design incorporating a partition wall in a unitary form for both the color layer and quantum dot layer, formed using a photosensitive resin composition, which simplifies the manufacturing process and enhances external light suppression, thereby improving luminous efficiency and aperture ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If quantum dots are used as light-emitting material in color filter, then high color realization capability and superior luminance characteristics are achieved, but crystal formation occurs on surface reducing luminous efficiency
Solution Approach 1:
An encapsulation layer comprising a first encapsulation layer and a second encapsulation layer is introduced as an intermediary between the quantum dot layer and external environment. The first encapsulation layer directly contacts the quantum dot layer, while the second encapsulation layer contacts the first, creating a protective barrier that prevents crystal formation without compromising the quantum dots' light-emitting properties
Solution Approach 2:
The encapsulation structure uses composite material design with at least two different materials forming the first and second encapsulation layers. This composite structure provides enhanced protection against crystal formation while maintaining optical transparency and preventing direct contact between quantum dots and potentially harmful environmental factors
2Ease of manufacture
If conventional pigment dispersion process is used for color filter manufacturing, then manufacturing is simplified, but light transmission efficiency decreases leading to lower luminance
Solution Approach 1:
The invention transitions from using pigments or dyes as colorants to using quantum dots as the light-emitting material. This parameter change in material composition fundamentally alters the optical properties, enabling high luminance and superior color realization capability while maintaining manufacturing feasibility through the encapsulation protection mechanism
3Loss of energy
If quantum dot stability is improved to prevent crystal formation, then luminous efficiency is maintained, but manufacturing complexity increases
Solution Approach 1:
The encapsulation layers are formed preliminarily to protect the quantum dot layer before any crystal formation can occur. By establishing this protective barrier in advance during the manufacturing process, the quantum dots are shielded from environmental factors that would otherwise cause instability and crystal formation, maintaining luminous efficiency without requiring complex post-processing
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 results in improved luminous efficiency, high luminance, and reduced power consumption, enabling the production of high-quality images with enhanced color representation and contrast ratios.
Implementation Method 1
forming a partition wall on a base substrate, forming a color layer having at least one color on the base substrate having the partition wall, and forming a quantum dot layer on the color layer
Data Source
AI summary
The present invention relates to a color filter including a color layer having at least one color, a quantum dot layer, and a partition wall in a unitary form for the color layer and the quantum dot layer, a method of manufacturing the color filter, and an image display device including the color filter. The color filter is capable of exhibiting a superior external light suppression effect, thereby improving luminous efficiency, and moreover, it is possible to simplify the process of manufacturing the color filter, thereby improving productivity. In addition, the image display device including the color filter can exhibit improved luminance to thus realize a high-quality image.