Stability Study of Quantum Dot Color Converted Mini/Micro-LED Displays

The implementation of quantum dot color conversion (QDCC) technology in mini/micro-LED display applications has attracted considerable interest due to its remarkable fabrication yield and superior optical performance. However, the stability problems of the QDCC devices need to be addressed as they can lead to a significant decrease in light output. This study explores the stability of QDCC film under thermal heat and moisture conditions, particularly at <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">85∘C/5% RH</tex> and <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">85∘C/85%RH</tex> . The results of our study demonstrate that the QDCC film is susceptible to degradation from moisture. Moreover, our investigation reveals that the QDCC film with a protection coating exhibits a much better stability compared to the sample lacking such a coating.