Quantum‐dot technology is bringing wide color gamut to LCDs, giving them a leg up on another advantage that once belonged to OLEDs.

Quantum dot color conversion layers have the potential to greatly improve the efficiency and color performance of displays including and beyond liquid crystal displays. To fully realize these improvements, the quantum dots must be deposited and patterned at high resolution. One promising method for achieving this is through inkjet printing. In this paper we report on the fabrication and characterization of quantum dot inks, as well as films made from inkjet deposition of these materials.

Quantum dots (QDs) have already been shown to achieve >90% BT.2020 color gamut in LCD displays using (QDEF®) Quantum Dot Film technology. In this paper, we report that by further engineering of the quantum dot materials, >90% BT.2020 is possible in a RoHS‐compliant package. This is possible by using a combination of cadmium‐free and low‐cadmium quantum dots.

No abstract

Moving the light conversion by quantum dots (QDs) from the backlight to the front of the LCD has the potential to further improve both the overall efficiency and color gamut of the display. In order to accomplish this change of architecture, the QDs have to be patterned at the sub‐pixel pitch of the display. This requires the QDs to be integrated into a photoresist at high concentration in order to produce pixels of the required size and optical density. Here we report on our fabrication and characterization of red and green QD photoresist, as well as how we model its performance in displays.