Quantum Dot Filter Reflective Structure for Light Leakage Control
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Solution Overview
Problem
Existing display technologies face challenges in enhancing light emission efficiency and preventing light leakage of quantum dot filter layers, which affects the overall display effect and light intensity under frontal view conditions.
Innovation Solution
A filter structure is designed with a reflective structure surrounding the quantum dot filter layer, where the distance between the reflective structure and the base substrate is greater than or equal to the distance between the quantum dot filter layer and the base substrate, along with color filters and a protective layer, to improve light emission and exit efficiency while preventing light leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a reflective structure is added to surround the quantum dot filter layer, then light emission efficiency and light exit efficiency are improved, but device complexity increases
Solution Approach 1:
The reflective structure converts scattered light that would otherwise be lost into useful light by reflecting it back to the quantum dot filter layer, thereby improving light emission efficiency and light exit efficiency while utilizing what would be harmful light leakage
Solution Approach 2:
The reflective structure is divided into multiple segments including a first reflective structure above the quantum dot filter layer and a second reflective structure extending from the first reflective structure to the base substrate, allowing optimized light reflection paths without requiring a completely complex monolithic structure
2Use of energy by moving object
If the reflective structure is positioned closer to the quantum dot filter layer, then light reflection efficiency improves, but light leakage increases
Solution Approach 1:
The reflective structure extends in multiple dimensions - vertically above the quantum dot filter layer and laterally surrounding it - creating a three-dimensional light reflection path that efficiently reflects light back while preventing lateral light leakage through the surrounding reflective barriers
3Manufacturing precision
If the distance between reflective structure and base substrate is increased, then light scattering is reduced, but device volume increases
Solution Approach 1:
The reflective structure is positioned at different distances from the base substrate at different locations - closer above the quantum dot filter layer for efficient reflection, and extending laterally to surround and contain the light, creating localized optical zones that optimize both light scattering control and device volume
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 emission efficiency, light exit efficiency, and display effect by reflecting scattered light back to the quantum dot filter layers, ensuring uniform light intensity across different colors and reducing crosstalk between adjacent layers.
Implementation Method 1
a reflective structure whose orthographic projection on the base substrate surrounds an orthographic projection of the quantum dot filter layer
Data Source
AI summary
A filter structure and a method for manufacturing the same, and a display device. The filter structure includes a base substrate and a plurality of filter units positioned on the base substrate, at least part of the filter units including a quantum dot filter layer. The filter units further include a reflective structure whose orthographic projection on the base substrate surrounds the orthographic projection of the quantum dot filter layer on the base substrate. A distance between a plane of the reflective structure away from the base substrate and the base substrate is greater than a distance between a plane of the quantum dot filter layer close to the base substrate and the base substrate.