Graphene Protection Layer for Quantum Dot Lighting
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Solution Overview
Problem
Conventional lighting technologies face challenges in resisting gas and humidity, and they often have low light-emitting efficiency and environmental concerns, such as incandescent lamps' inefficiency, electric discharge lamps' high cost and voltage, and fluorescent lamps' mercury usage.
Innovation Solution
A lighting apparatus featuring a housing with a light-emitting unit and a light conversion unit comprising a substrate with a quantum dot layer and a protection layer made of graphene, which enhances resistance to gas and humidity while maintaining stable optical properties and improving light-emitting efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If quantum dot layer is used for light conversion, then light-emitting efficiency is improved, but resistance against gas and humidity deteriorates
Solution Approach 1:
A protection layer comprising a porous layer and a non-porous layer is introduced as an intermediary between the quantum dot layer and the external environment. The porous layer allows for adhesion and integration, while the non-porous layer provides the gas and humidity barrier, thus protecting the quantum dot layer without compromising its light-emitting efficiency.
Solution Approach 2:
The protection layer is constructed using composite materials with different properties: a porous layer for adhesion and integration with the quantum dot layer, and a non-porous layer for providing gas and humidity resistance. This composite structure enables simultaneous achievement of both light-emitting efficiency and environmental resistance.
2Ease of manufacture
If conventional light sources are used, then manufacturing cost is reduced, but light-emitting efficiency deteriorates
Solution Approach 1:
The invention changes the material parameters of the protection layer, specifically using a porous layer combined with a non-porous layer, to achieve both cost-effectiveness and high light-emitting efficiency. This parameter change allows the system to move away from conventional single-material structures to a multi-layer composite structure that optimizes both manufacturing and performance.
3Reliability
If protection layer is added to protect quantum dot layer, then resistance against gas and humidity is improved, but device complexity increases
Solution Approach 1:
The protection layer is segmented into two distinct functional layers: a porous layer for adhesion and integration with the quantum dot layer, and a non-porous layer for providing the gas and humidity barrier. This segmentation allows each layer to perform its specific function efficiently while maintaining overall structural simplicity.
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 provides enhanced resistance to gas and humidity, stable optical properties, and improved light-emitting efficiency, reducing the vulnerability of quantum dot layers and enabling a more reliable and efficient lighting system.
Implementation Method 1
a light conversion unit comprising a substrate arranged in front of the light emitting unit, a quantum dot layer formed on the substrate
Implementation Method 2
a protection layer which surrounds the quantum dot layer. Here, the protection layer may be formed of grapheme
Data Source
AI summary
A lighting apparatus and a display device including the same are disclosed. The present invention relates to a lighting apparatus, which can enhance resistance against gas or humidity and which can present a stable optical property and which can enhance light-emitting efficiency, and a display device including the lighting apparatus.