Quantum Dot Resin Layering for High-Resolution Displays
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Solution Overview
Problem
Conventional quantum dot display manufacturing methods are complex, result in material waste, and struggle to achieve high-resolution, large-size displays with poor reproducibility and color gamut performance.
Innovation Solution
A quantum dot display apparatus with a color filter substrate and array substrate configuration, utilizing surface-modified quantum dots in resin composition layers with alkali-soluble resins and solvents, and a manufacturing method involving coating, pre-baking, and developing processes to form sophisticated patterns with reduced material waste and low production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If quantum dot material is mixed with color photoresist to form quantum dot patterns, then color saturation and color gamut are improved, but the process becomes more complicated and uniform dispersion of quantum dots in photoresist is difficult to achieve
Solution Approach 1:
The patent extracts quantum dots from the photoresist mixture approach and uses them as a separate resin composition layer. The quantum dots are applied as a distinct material layer rather than being mixed with photoresist, simplifying the process while maintaining color quality.
Solution Approach 2:
The patent segments the quantum dot application into separate red and green quantum dot resin composition layers, with blue sub-pixels using transparent photoresist. This segmentation allows each layer to be processed independently, improving uniformity and simplifying the overall process.
2Manufacturing precision
If transfer printing or screen printing methods are used to produce quantum dot patterns, then material waste increases and process reproducibility deteriorates, but pattern formation is achieved
Solution Approach 1:
The patent replaces mechanical printing methods (transfer printing, screen printing) with a coating-based approach using spin coating or bar coating. This substitution eliminates material waste associated with printing processes while achieving high-resolution patterns through controlled coating and subsequent development.
3Manufacturing precision
If conventional quantum dot mixing methods are used, then production cost increases and material waste occurs, but quantum dot patterns are formed
Solution Approach 1:
The patent uses a universal coating process (spin coating or bar coating) that can apply multiple quantum dot layers uniformly. This multi-functional approach replaces multiple specialized printing steps, reducing material waste and simplifying the manufacturing process while maintaining high pattern resolution.
Solution Approach 2:
The patent uses photoresist patterns as templates to define the quantum dot regions. The transparent photoresist in blue sub-pixels copies the pixel pattern structure, eliminating the need for separate quantum dot patterning steps and reducing material waste.
4Stability of the object's composition
If quantum dots are evenly dispersed in color photoresist, then color uniformity is improved, but the dispersion process becomes difficult and time-consuming
Solution Approach 1:
The patent extracts quantum dots from the photoresist mixture and applies them as a separate resin composition layer. This eliminates the time-consuming dispersion process while achieving uniform color distribution through controlled coating and development.
Solution Approach 2:
The patent changes the physical state and composition parameters by using a dedicated quantum dot resin composition with specific solvents and resins. This allows for better flow and uniform distribution during coating, achieving color uniformity without extended dispersion time.
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 color saturation and color gamut while simplifying the manufacturing process, enabling high-resolution displays with reduced material waste and lower production costs, suitable for mass production.
Implementation Method 1
The quantum dots due to quantum the confinement effect exists, the original continuous band discrete into energy level structure, which can emit visible light by the external excitation
Implementation Method 2
a red photoresist layer provided on the first quantum dot red resin composition layer; the green sub-pixel region including a second quantum dot resin composition layer provided on the lower substrate and a green photoresist layer provided on the second quantum dot green resin composition layer
Data Source
AI summary
The present disclosure provides a quantum dot display apparatus. By adding quantum dot display technology of the present disclosure can provide sophisticated quantum dot patterns in the color filter layer and have higher resolution, color saturation and color gamut of the display apparatus, the well structure and manufacture is simple. The disclosure also provides a manufacturing method of a quantum dot display apparatus, the methods includes exposure, coating, developing process of the existing color filter to contain the surface modified red and green quantum dot resin composition with more sophisticated patterns, and making high resolution, color saturation and color gamut quantum dot display apparatus, the material preparation and fabrication process of this manufacturing method is simple, less waste of materials, low production cost, suitable for mass production.