4‐5: Quantum Dot Design Criteria for Color Conversion in MicroLED Displays

Abstract

Published absorption values of common types of colloidal quantum dots have been used to calculate the loading requirements in a thin polymer film for application in color- converted microLED displays. The loading requirements as a function of the QD material and design are explored and discussed, with the goal of maximizing blue photon absorption for conversion to red and green in a model layer 5 microns thick.

64‐3: Invited Paper: High Optical Density Quantum Dot Pixel Color Conversion Films for Displays

“…Where I 0 is the intensity count of the excitation beam integrated from 460 nm to 489 nm and I is the intensity count of the transmitted peak integrated from 460 nm to 489 nm. Furthermore, the OD of the QD film is studied from the perspective of a model presented by Osiniski et al [12] in which the OD of a QD film as a function of thickness is calculated assuming that the path of light traveled is the thickness of the film. The OD model used is shown in Equation (2).…”

Micro-light-emitting diodes with quantum dots in display technology

“…81 with permission from John Wiley and Sons and d ref. 83 with permission from RSC Publishing absorption of blue light with a QD film thickness of 5 µm and a certain volume fraction 90 . Additionally, it was reported that an inkjet-printed InP/ZnS QD film absorbs more than 95% of blue light when the film thickness is 10 µm 91 .…”

Active matrix monolithic micro‐LED full‐color micro‐display

“…Alternatively, with potential process scalability, monochromatic micro‐LED micro‐displays with extremely high pixel density can be fabricated monolithically and extended to full‐color displays using color down conversion technology. Highly‐emissive CdSe/ZnS quantum dots (QDs) have been adopted to convert desirable colors from monochromatic micro‐LEDs 11,12 . We and other researchers have reported full‐color micro‐displays by jet printing of red, green, and blue QDs on a monolithically fabricated UV micro‐LED array 13,14 .…”