Quantum Dot Light Conversion Member with Dual Shells
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Solution Overview
Problem
Current light conversion members for liquid crystal display apparatuses are costly and thick due to the use of multiple barrier layers to protect quantum dots from external oxygen and water, which affects their light conversion efficiency.
Innovation Solution
A light conversion member is designed with a base substrate and two light conversion layers, where the first light conversion layer includes quantum dots with an organic shell and an inorganic outer shell, and the second light conversion layer includes quantum dots with an organic core and inorganic shells, reducing the need for additional barrier layers by using the shells to protect the quantum dots from external factors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple barrier layers are used to protect quantum dots from external oxygen and water, then reliability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines the protection function into the quantum dot structure itself by adding shells directly to the quantum dots. The core quantum dot is surrounded by an organic material shell and an inorganic material shell, creating an integrated protective structure that eliminates the need for separate barrier layers while maintaining protection against oxygen and water
Solution Approach 2:
The quantum dots are designed to be self-protecting through their multi-shell structure. The organic material shell and inorganic material shell work together to protect the core quantum dot from external environmental factors, making the protection intrinsic to the quantum dot rather than requiring external barrier layers
2Reliability
If multiple barrier layers are used to protect quantum dots, then reliability is improved, but thickness increases
Solution Approach 1:
The protective function is merged into the quantum dot structure through the organic and inorganic shells that directly surround the core. This integration eliminates the need for additional thick barrier layers, maintaining thin overall device profile while providing effective protection
Solution Approach 2:
The organic material shell and inorganic material shell form thin protective films around the quantum dot core. These shells provide effective protection against oxygen and water penetration while maintaining a thin overall structure that does not significantly increase device thickness
3Reliability
If quantum dots are protected from external oxygen and water, then light conversion efficiency is improved, but manufacturing cost increases due to multiple barrier layers
Solution Approach 1:
The protection function is combined into the quantum dot structure itself through the organic and inorganic shells. This eliminates the need for separate barrier layers, reducing manufacturing steps and material costs while maintaining the light conversion efficiency that requires protection from oxygen and water
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 configuration reduces manufacturing costs and thickness by eliminating unnecessary barrier layers while effectively protecting the quantum dots, thereby enhancing light conversion efficiency and maintaining image display quality.
Implementation Method 1
a first light conversion layer disposed on the base substrate and including a plurality of first quantum dots which converts first light into light with a first color
Implementation Method 2
a second light conversion layer disposed between the base substrate and the first light conversion layer, and including a plurality of second quantum dots which converts the first light into light with a second color
Data Source
AI summary
A light conversion member includes a base substrate, a first light conversion layer disposed on the base substrate and including a plurality of first quantum dots that converts first light into light with a first color, a second light conversion layer disposed between the base substrate and the first light conversion layer and including a plurality of second quantum dots that converts the first light into light with a second color. Each of the first quantum dots includes a first core that converts the first light into light with the first color; a first shell surrounding the first core and including an organic material; and a second shell surrounding the first shell and including an inorganic material.