QLED Light Irradiation Curing for Faster Efficiency Gain
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing post-processing methods for quantum dot light-emitting diodes (QLEDs) are time-consuming and do not significantly improve the efficiency of the devices, leading to prolonged production periods and suboptimal performance.
Innovation Solution
A post-processing method involving energizing the cathode and anode of a QLED and subjecting it to light irradiation treatment, using a light source with specific wavelengths and illuminance levels, either in a sealed cavity with reflective materials or with a transparent electrode configuration, to accelerate the curing process and enhance external quantum efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a long time energization curing process is performed on the QLED device after the preparation of each functional layer, then the stability and efficiency of the QLED device are improved, but the production period of the QLED device is significantly prolonged
Solution Approach 1:
The patent applies parameter changes by introducing light irradiation as an additional energization parameter during the curing process. By combining light irradiation with traditional electrical energization, the curing process achieves better stability and efficiency improvements in shorter time periods, thus resolving the contradiction between improving device quality and reducing production time.
2Reliability
If a long time energization curing process is performed on the QLED device, then the efficiency of the device is improved, but the effect on improving efficiency is not obvious
Solution Approach 1:
The patent implements continuous useful action by performing energization and light irradiation treatment simultaneously and continuously during the curing process. This continuous dual-mode treatment ensures that the functional layers achieve optimal curing efficiency and device performance in a more efficient manner, addressing the issue of diminishing returns from prolonged single-mode 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
This method reduces the curing time by at least 50% and improves the external quantum efficiency of QLEDs, achieving a luminous efficiency of up to 6.6%, while shortening the production period and maintaining device performance.
Implementation Method 1
performing a light irradiation treatment on the quantum dot light-emitting diode
Implementation Method 2
high quantum yield of electroluminescence
Implementation Method 3
quantum dots have excellent optical properties such as high quantum yield, large molar extinction coefficient, good optical stability, narrow half-peak width, wide excitation spectrum and controllable emission spectrum
Data Source
AI summary
A post-processing method of a quantum dot light-emitting diode, which includes the following steps: providing a quantum dot light-emitting diode, the quantum dot light-emitting diode includes a cathode and an anode arranged oppositely, and a quantum dot light-emitting layer arranged between the cathode and the anode; energizing the cathode and anode of the quantum dot light-emitting diode, and performing a light irradiation treatment on the quantum dot light-emitting diode.