Quantum Dot LED Structure With GaN Sealing Against Moisture Damage
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Solution Overview
Problem
Existing light emitting diodes, particularly quantum dot-based technologies, face challenges with optical and electrical consistency due to the impact of water vapor and oxygen, as well as high-temperature damage, which affects their performance and lifespan.
Innovation Solution
A light emitting diode structure comprising a first-type gallium nitride layer, a quantum dot light emitting layer, and a second-type gallium nitride layer with a low temperature deposition process, where the second-type layer provides sealing and protects the quantum dot layer from water vapor and oxygen, while ensuring the quantum dot's optical and electrical consistency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If quantum dot light emitting layer is used, then color quality and efficiency are improved, but optical and electrical consistency deteriorates due to water vapor and oxygen impact
Solution Approach 1:
The patent employs gallium nitride layers as protective barriers that create an inert environment around the quantum dot light emitting layer, preventing water vapor and oxygen from reaching and degrading the quantum dots, thus maintaining optical and electrical consistency while preserving color quality
Solution Approach 2:
The patent uses thin gallium nitride films to encapsulate the quantum dot layer, providing a protective shell that isolates the quantum dots from harmful environmental factors while maintaining the structural integrity and optical performance of the device
2Ease of manufacture
If conventional sealing methods are used, then manufacturing simplicity is maintained, but sealing performance deteriorates due to high-temperature damage
Solution Approach 1:
The patent changes the temperature parameter by using low-temperature deposition processes for gallium nitride layers, avoiding high-temperature damage to the quantum dot layer while achieving effective sealing, thus maintaining manufacturing simplicity without compromising sealing performance
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 the optical and electrical consistency of the light emitting diode, improves its sealing performance, and extends its service life by preventing erosion from water vapor and high-temperature damage.
Implementation Method 1
a light emitting layer, where the light emitting layer includes a quantum dot
Implementation Method 2
a first-type substrate is provided, where the first-type substrate includes a base and a first-type layer, and the first-type layer includes a first-type gallium nitride
Data Source
AI summary
Disclosed are a light emitting diode and a method for manufacturing a light emitting diode. The light emitting diode includes a first-type layer, a light emitting layer, a second-type layer and an electrode layer; the first-type layer includes a first-type gallium nitride; the light emitting layer is located on the first-type layer; the light emitting layer includes a quantum point; the second-type layer is located on the light emitting layer; the second-type layer includes a second-type gallium nitride; and the electrode layer is located on the second-type layer.