Color Converter Layer Structure for Pixel Light Leakage Blocking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing color converter layers suffer from reduced light efficiency due to thickness limitations of the black matrix, leading to light leakage between adjacent pixel regions, which hinders brightness improvement and color gamut enhancement.
Innovation Solution
A color converter layer design featuring a first light blocking member with a second light blocking member extending with a greater thickness than the first, partitioning pixel regions to prevent light leakage, and an intermediate layer to secure thickness and spacing, along with a method of patterning and applying color converters using a dispenser nozzle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the thickness of the black matrix is increased to prevent light leakage, then light blocking performance is improved, but manufacturing complexity and device structure complexity increase
Solution Approach 1:
The light blocking function is segmented into two distinct members: a first light blocking member (black matrix) at the bottom and a second light blocking member (bank) extending upward from the substrate. This segmentation allows each member to have optimized thickness independently, with the bank providing the primary light blocking barrier without requiring excessive thickness in the black matrix layer.
Solution Approach 2:
The solution transitions from a single-layer vertical thickness approach to a two-dimensional light blocking structure. The second light blocking member extends in the vertical dimension from the substrate, creating a stepped configuration that blocks light leakage without requiring excessive thickness in any single layer, thereby reducing manufacturing complexity.
2Illumination intensity
If the thickness of the color converter layer is increased to improve color gamut, then color reproduction is improved, but light efficiency decreases due to greater light absorption
Solution Approach 1:
The light blocking structure is segmented to create distinct functional zones: the first light blocking member defines pixel regions and the second light blocking member prevents light leakage. This segmentation allows the color converter layer to be positioned optimally within the first pixel regions with controlled thickness, improving color gamut while maintaining light efficiency by preventing leakage losses.
3Object-affected harmful factors
If the thickness of the second light blocking member is increased to prevent light leakage, then light blocking performance is improved, but manufacturing precision requirements increase
Solution Approach 1:
Different regions of the light blocking structure have different thickness characteristics optimized for their specific functions. The second light blocking member (bank) has greater thickness at the light blocking interface to prevent leakage, while the first light blocking member (black matrix) has controlled thickness for pixel definition. This local quality differentiation allows each region to meet its specific performance requirements without excessive overall thickness control precision requirements.
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 enhances light efficiency, prevents light leakage, and improves brightness and color gamut by securing the thickness of the color converter layer, thereby optimizing display performance.
Implementation Method 1
a first color converter disposed in the first pixel region and configured to convert incident light into a first color and emit the incident light in the first color
Implementation Method 2
a second color converter disposed in the second pixel region and configured to convert the incident light into a second color that is different from the first color, and to emit the incident light in the second color
Implementation Method 3
a second light blocking member that extends with a preset thickness and is formed on a surface of the first light blocking member, and is configured to block transmission of the incident light into an adjacent pixel region
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A color converter layer is provided. The color converter layer includes a first light blocking member in which a plurality of pixel regions comprising a first pixel region and a second pixel region are disposed to be spaced apart from each other, a first color converter disposed in the first pixel region for converting and emitting incident light into a first color, a second color converter disposed in the second pixel region for converting and emitting the incident light into a second color different from the first color, and a second light blocking member that extends with a preset thickness and is formed on a surface of the first light blocking member, and blocks transmission of the incident light into an adjacent pixel region by partitioning the first pixel region and the second pixel region. The preset thickness may be greater than the thickness of the first light blocking member.