Flexibility

Researchers from Korea's Daegu Gyeongbuk Institute of Science and Technology (DGIST) developed a stretchable QD color conversion layer, that can be used in stretchable microLED displays. These QD films use a technology developed at DGIST that enables the direct linkage of quantum dots.

The researchers say that the color-conversion layer delivers high color reproducibility while maintaining performance even when stretched by more than 50%.  The color-conversion layer fabricated with this technology achieved a high resolution of 313 PPI.

Researchers from Seoul National University developed an ultrathin QLED device, that can be folded just like a paper. The researchers demonstrated a 3D foldable QLED, which can be produced in customized 3D structures.

To produce the device, the researchers developed a new fabrication process, that can partially etch the epoxy film deposited on the QLED surface without damaging the underlying QLED. This changes the QLED film from a planar shape to the 3D foldable shape.

Last year, Poland-based Ergis Group launched an OLED encapsulation film platform called Ergis noDiffusion®. The company is currently testing its film solutions at customer sites in Asia, the EU and the US, and it is now starting to offer the same platform for the protection of quantum dot films (QD films) used in display and lighting applications.

These new films can be tuned to fit specific needs. Ergis can deploy its films on several substrate types, with varying film thickness, and the barrier properties can be tuned to be between 10-6 to 10-3. This means that custom films can be created to suit the specific sensitivity of the QDs for water vapor and to achieve specific product lifetime or other required properties.