Light Blocking Member Grooves for Color Conversion Substrates
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Solution Overview
Problem
Existing display devices face issues with impurity penetration, such as moisture and external air, which degrade display quality by entering through the refractive layer.
Innovation Solution
A color conversion substrate with a light blocking member featuring pattern grooves and a refractive layer that minimizes the distance between the light blocking member and the refractive layer, reducing the exposure of the refractive layer to the outside and thus preventing impurity ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the refractive layer is exposed to the outside, then light extraction efficiency is improved, but impurity penetration increases
Solution Approach 1:
The light blocking member is segmented into multiple layers (first, second, and third light blocking layers) with pattern grooves formed between them. This segmentation allows the refractive layer to be positioned closer to the display area for improved light extraction while the multi-layer light blocking structure prevents impurity penetration paths.
Solution Approach 2:
The pattern grooves extend in the thickness direction (third direction) of the display device, creating a vertical barrier structure. This dimensional approach blocks impurities from penetrating horizontally through the refractive layer while maintaining the refractive layer's exposure for light extraction efficiency.
2Object-affected harmful factors
If the light blocking member is positioned closer to the display area, then impurity penetration is prevented, but manufacturing complexity increases
Solution Approach 1:
The light blocking member is divided into three separate layers (first, second, third light blocking layers) that can be manufactured and positioned independently. This segmentation simplifies the manufacturing process compared to creating a single complex structure, while still achieving the goal of preventing impurity penetration through the pattern groove configuration.
Solution Approach 2:
The pattern grooves are formed in advance between the light blocking layers during the manufacturing process. This preliminary action of creating the grooved structure before final assembly simplifies the overall manufacturing complexity by integrating the impurity barrier function into the existing layer structure rather than adding separate components.
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 design effectively prevents impurities from entering the display device, enhancing display quality by maintaining the integrity of the internal layers and improving luminous efficiency.
Implementation Method 1
a refractive layer facing both the color filter layer and the light blocking member. A portion of the refractive layer fills the pattern groove
Data Source
AI summary
A color conversion substrate includes a base substrate including a display area and a non-display area which is adjacent to the display area in a first direction, a color filter layer in the display area, a light blocking member in the non-display area, extending in the first direction and defining a pattern groove of the light blocking member, the pattern groove being in the non-display area, and a refractive layer facing the base substrate with both the color filter layer and the light blocking member therebetween. The refractive layer extends into the pattern groove of the light blocking member and fills the pattern groove.