Quantum Dot Optical Member for Thin Display Efficiency
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Solution Overview
Problem
Current display apparatuses face challenges in achieving high optical efficiency and color reproduction characteristics while maintaining a thin thickness, often requiring multiple optical members that complicate assembly and increase thickness.
Innovation Solution
A thin, highly reliable optical member is developed, incorporating a base substrate with a quantum dot unit and a low refraction layer, which functions as both a light guide and light conversion member, simplifying the display apparatus structure and improving optical performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple optical members are added to improve optical characteristics, then optical efficiency and color reproduction are improved, but device thickness and structural complexity increase
Solution Approach 1:
The patent combines multiple optical functions (light guiding, light conversion, and optical characteristic enhancement) into a single integrated optical member. This member includes a light guide portion for directing light and a color conversion portion with quantum dots for wavelength transformation, eliminating the need for separate optical components while maintaining excellent optical efficiency and color reproduction.
Solution Approach 2:
The optical member is designed to perform multiple functions simultaneously: it guides light from the light source, converts wavelengths using quantum dots, and provides structural support. This multi-functional design reduces the total number of components needed in the display apparatus while achieving superior optical performance.
2Reliability
If multiple optical members are added to improve optical characteristics, then optical efficiency and color reproduction are improved, but assembly complexity increases
Solution Approach 1:
The patent integrates light guiding and color conversion functions into a single optical member, reducing the number of discrete components that need to be assembled. This integration simplifies the assembly process while maintaining excellent optical efficiency and color reproduction characteristics.
3Reliability
If quantum dots are dispersed in a binder, then color conversion efficiency is improved, but manufacturing complexity increases
Solution Approach 1:
The patent uses a composite material system where quantum dots are dispersed in a binder resin to form the color conversion portion. This composite structure enables efficient color conversion while the binder provides structural integrity and facilitates manufacturing processes such as coating and curing.
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 optical member enhances optical efficiency and color reproduction, reduces the overall thickness of the display apparatus, and simplifies assembly by integrating light guiding and conversion functions into a single structure.
Implementation Method 1
a quantum dot layer (321) including first quantum dots (PT1) and second quantum dots (PT2)
Implementation Method 2
a base substrate (310) allowing light incident on a bottom surface of the base substrate to propagate toward a top surface of the base substrate
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
An optical member including a base substrate, a quantum dot layer disposed on the base substrate and having a first top surface including a lower wrinkle, the quantum dot layer including a medium layer and a plurality of quantum dots dispersed in the medium layer, a lower barrier layer disposed between the base substrate and the quantum dot layer, and an upper barrier layer covering the quantum dot layer, in which the upper barrier layer has a second top surface with an upper wrinkle corresponding to the lower wrinkle of the quantum dot layer.