Display Panel Partition Walls and Color Control Layers
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Solution Overview
Problem
Current display panel fabrication processes face challenges in reducing pixel defects and simplifying the manufacturing process while maintaining effective color control and light management.
Innovation Solution
The display panel design incorporates an upper and lower substrate with partition walls and color control layers, including quantum dots, to manage light and color, and a method that involves forming partition walls and color control layers on the substrate to prevent color mixing and enhance light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If partition walls are added to separate pixel areas and color control layers are introduced, then color accuracy and light management are improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The pixel area is divided into multiple sub-regions using partition walls that extend from the base substrate through the color control layer. Each partition wall creates separate compartments that isolate different color control layers (red, green, blue quantum dots) and prevent color mixing between adjacent pixel areas, thereby improving color accuracy while providing structured organization
Solution Approach 2:
Different color control layers with specific quantum dot compositions are placed in different regions defined by the partition walls. The first color control layer contains red quantum dots, the second contains green quantum dots, and the third contains blue quantum dots, allowing each region to have optimized local properties for its specific color function
2Manufacturing precision
If partition walls and color control layers are added to prevent color mixing, then color accuracy is improved, but the fabrication process becomes more complex
Solution Approach 1:
The partition walls are formed first on the base substrate before depositing the color control layers. This preliminary structuring creates predefined compartments that guide the subsequent deposition process, ensuring that each color control layer is deposited only in its designated region and preventing color mixing during fabrication
Solution Approach 2:
The fabrication process is segmented into distinct stages: first forming partition walls, then sequentially depositing different color control layers in the compartments created by the partition walls. This segmentation of the manufacturing process makes the complex task of preventing color mixing more manageable and controllable
3Adaptability or versatility
If multiple color control layers with quantum dots are introduced, then color conversion capability is improved, but device complexity increases
Solution Approach 1:
The color control layers utilize quantum dots as composite materials, where semiconductor nanoparticles with specific sizes and compositions provide tailored color conversion properties. Red quantum dots, green quantum dots, and blue quantum dots are used in different regions, allowing the display to convert blue backlight into full-color images with high color accuracy
Solution Approach 2:
The color conversion function is segmented across three separate color control layers, each containing quantum dots optimized for a specific color wavelength. This segmentation allows independent optimization of each color channel while maintaining overall system functionality through the structured arrangement defined by the partition walls
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 approach reduces pixel defects and simplifies the fabrication process, improving color accuracy and light management by effectively partitioning regions for distinct color emission and transmission.
Implementation Method 1
the first color control layer may include a first quantum dot to convert the blue light into red light
Implementation Method 2
the second color control layer may include a second quantum dot to convert the blue light into green light
Implementation Method 3
each of the first, second, and third display elements may include a first electrode, a second electrode, and a light emitting layer between the first electrode and the second electrode, and the light emitting layers of the first, second, and third display elements may have an integrated shape to generate blue light
Data Source
AI summary
A display panel includes an upper display substrate and a lower display substrate. The upper display substrate includes a base substrate, a first partition wall on the base substrate, overlapping the light blocking area, and configured to define first, second, and third internal regions corresponding to the first, second, and third pixel areas, a second partition wall extending from the first partition wall, overlapping at least one area of the first, second, and third pixel areas, and configured to partition a region corresponding to the at least one area into partial regions, and first, second, and third color control layers respectively located in the first, second, and third internal regions.