KAIST researchers developed a stress-relief substrate for stretchable OLED displays

Korea's KAIST institute researchers developed a new stress-relief substrate that is suitable for the creation of stretchable OLEDs that can maintain their performance under high-strain deformation.

Stress-relief substrate for stretchable OLEDs (KAIST)

The researchers say that the new stress-relief substrates have a unique structure and is made from a patterned "upper substrate" with bridges on top of pillars that decentralize the stress on the device.

SimBeyond and SCM to develop a fully integrated multi-scale OLED simulation tool

SimBeyond and Software for Chemistry & Materials (SCM) announced a collaboration to develop novel OLED simulation software, with support from the Dutch agency of enterprises.

Simbeyond/SCM OLED integrated multi-scale OLED simulation image

SCM and SimBeyond will develop the first fully integrated multi-scale simulation pipeline for OLEDs that will provide material researchers with an easy-to-use solution that will help predict the performance of any combination of materials and stack architectures, under a wide range of operational conditions.

Kopin developed a double-stack OLED architecture for higher brightness OLED microdisplays

Kopin Corporation announced that the company developed a new double-stack OLED architecture that enables brighter microdisplays with longer lifetime.

Kopin Lightning OLED microdisplay photo

Kopin 1" 2k x 2k OLED Lightning microdisplay

Last week Kopin announced a new 1.3" 2560x2560 OLED microdisplay, and the company now reveals that this display uses the new double-stack architecture and achieves brightness of over 1,000 nits. Kopin also says that this display was co-developed with Panasonic and Lakeside Optoelectronic.

Researchers develop a novel memory device based on an OLED coupled with an MOS capacitor

Researchers from TU Dresden developed a novel memory device that is based on a combination of an OLED emitter and a metal-oxide semiconductor (MOS) capacitor.

pinMOS memory structure (TU Dresden)

The so-called pinMOS device is a non-volatile memory-capacitor with high repeatability and reproducibility. pinMOS devices can store several states, since charges can be added or removed in controllable amounts. This device can also be controlled (read and write) both electrically and optically.

Holst Center researchers use sALD to create IGZO OLED display backplanes on PEN foils

Researchers from the Holst Center has applied spatial atomic layer deposition (sALD) to create both the semiconductor and dielectric layer in a thin-film transistor (TFT) Oxide-TFT (IGZO) display backplane - for the first time ever.

Holst sALD QVGA OLED prototype photo

The researchers created a 200 PPI QVGA OLED display prototype on a thin PEN foil. This shows how TFTs can be produced in a low temperature process (below 200 degrees Celsius) using sALD on a cheap transparent plastic foil. The TFTs achieved a mobility of 8 cm2/V2 with channel lengths down to 1 um.

The Fraunhofer suggests using bidirectional OLEDs to create smart antibacterial surfaces

The Fraunhofer first demonstrated its bi-directional OLED microdisplays in 2009 - these display use photodetectors embedded between the OLED pixels to enable unique applications such as eye-tracking and more.

Fraunhofer BiClean OLED bidirectional display project photo

The Fraunhofer now suggests a new use for such displays. The BiClean project looked into the possibility of embedding bi-directional OLED microdisplays in solar panels or pipes, to detect contamination in early stages. The display project light at different colors, and the photodetectors can sense the surface status in real time - and so it is possible to know whether it is necessary to clean the surface.

Researchers from RUDN University developed OLED emitter compounds based on silver and copper doping

Researchers from RUDN University in Russia have synthesized new OLED emitter compounds. These compounds seem to be phosphorescent emitters, based on copper and silver atoms.

Copper and Silver OLED emitter compounds (RUDN University)

The researchers say that the compound platform they created can lead to efficient and cost-effective OLED emitters, and also offer a special molecular geometry that can enable freedom-of-design for developers.

Researchers develop a method to 3D Print transparent OLED displays

Researchers from Korea's Yonsei University has developed a 3D printing technique that can be used to deposit transparent OLED displays on any shape. The new technique 3D prints both the support structure and the 3D screen electronics.

OLED 3D printing stack scheme (Yonsei University)

The method is based in Digital Light Processing (DLP) system that prints the transparent plastic frames, and then uses an electrohydrodynamic jet (e-jet) printer to create the OLED layers as seen in the image above.

Early-stage startup Noctiluca to commercialize new TADF OLED compounds

A new company has recently been launched in Poland, to commercialize a new family of TADF OLED compounds. Noctiluca, which takes its name from a bio-luminescent marine creature, was established a few months ago with aims to be the world's first company to produce a commercial-ready blue TADF emitter.

Noctiluca Synthex materials photo

Noctiluca's story begins with an innovative organic DSSC solar cell platform that was developed at Synthex, an organic chemistry development platform company based in Toruń, Poland. A few years ago the researchers turned their attention to light emitting materials (which are quite similar to the light harvesting materials used in solar panels) and intensive research culminated in a promising family of new TADF compounds - which was then spun-off as Noctiluca,

Researchers from MPI-P propose a new way to design efficient OLED materials without unipolar charge transport

Researchers from the Max-Planck-Institute for Polymer Research (MPI-P) have built upon new understanding on organic electronic material defects to suggest ways to design higher efficiency OLED materials.

 Charges in organic semiconductors, trapped by oxygen and water molecules (MPI-P)

The researchers explain that they have discovered that clusters of water inside organic semiconductors can function as hole traps, and oxygen clusters can capture electrons in hole-dominated organic semiconductors. Even a small number of such water and oxygen defects can cause highly unipolar charge transport and harm the efficiency of the materials.

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