Technical / Research - Page 14

An interesting Microsoft research project looks at under-the-OLED cameras

OLED producers are looking at under-the-OLED cameras - this is a great technology that could enable complete bezel-less smartphone displays without any pop-up selfie cameras. Samsung, in 2018, announced it is working on several behind-the-OLED sensors, including a camera. But China's Visionox is the first company that actually launched such a technology commercially.

Microsoft research - behind the OLED cameras photo

Microsoft recently published an interesting research project (led by Sehoon Lim) that discusses the potential use cases of under-the-OLED camera and its advantages, and also the challenges - with AI technologies that could assist in solving these issues.

Read the full story Posted: Jul 25,2020

Korean researchers develop a highly-efficient deep-blue phosphorescent OLED emitter

Researchers from Korea's Pusan National University have developed an efficient deep-blue phosphorescent OLED emitter. The researcher say that their new materials has an EQE of 24% while the color point is CIE (0.149, 0.085).

According to the Korean press, the main achievement in this research was the adjustment of the doping concentration of a novel dopant (mer ‐Ir1) to optimize the balance of electron and holes in the light emitting layer.

Read the full story Posted: Jun 14,2020

Researchers fabricate an efficient flexible OLED that uses Mxene electrodes

Researchers from Seoul National University developed a flexible green OLED device that uses 2D titanium carbide MXene as a flexible and transparent electrode. The display achieved an efficiency of 100 cd/A, comparable to ITO-based devices, while showing good bending stability.

The researchers say that the MXene electrodes are much more flexible than ITO electrodes and this material could hold the key towards highly flexible transparent conductive display electrodes.

Read the full story Posted: Jun 01,2020

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.

Read the full story Posted: Mar 01,2020

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.

Read the full story Posted: Jan 08,2020

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.

Read the full story Posted: Jan 08,2020

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.

Read the full story Posted: Dec 03,2019

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.

Read the full story Posted: Nov 18,2019

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.

Read the full story Posted: Nov 14,2019