The OLED-Info newsletter (March 21, 2023)

Researchers from Korea's Pusan National University have developed a new low-cost hole injection layer (HIL) material for solution-processed OLEDs, achieving higher efficiency and lifetime compared to the current state-of-the-art.

The new material is solvent-resistant (>99%) and thermally cross-linkable. The researchers used this material to create a solution-procssed red phosphorescent OLED device. The researchers placed the material between the ITO electrode and the HTL material, thus achieving photo-crosslinking of (poly-TPD) as HTL on top of crosslinked HIL. 

Samsung Display started producing laptop OLED displays a while back, and now we are happy to offer one of these panels at the OLED Marketplace.

The display is a 15.6" 4K (3840x2160) laptop AMOLED, with an LVD interface. It is possible to add a touch layer.

Researchers at the University of St Andrews and the University of Cologne developed a polariton-based OLED device that offers angle-independent narrowband emission.

Polariton-Exciton quasiparticles are created when an OLED material is inserted into a high-quality microcavity. The researchers explain that by sandwiching the OLED device between two "mirrors", strong coupling and hybridization of light and matter can occur. This leads to the creation of the polariton particles. 

In 2019, following tensions between Japan and Korea, Japan's government decided to restrict some material exports to South Korea, including fluorinated polyimide, resist and high-purity hydrogen fluoride, materials required for OLED production.

The relations between the two countries are warming up now, and a few days ago the Japanese government decided to lift those restrictions, and the sale of these materials to Korean companies are now possible.

Review web site Rtings.com has performed an extensive accelerated longevity test for over three months, testing the latest QD-OLED and WOLED TVs.y 

Rtings reports that both QD-OLED displays (Samsung S95B OLED and the Sony A95K) showed signs of image retention, and it seems in general that the QD-OLED displays suffer from worse problems compared to LG's WOLED. Some of Sony's WOLED TVs also showed signs of image retention.

Samsung Display launched a new web site, called OLED Finder, in which you can choose your phone model to see whether it uses an OLED produced by Samsung Display.

This is a marketing play by SDC, that aims to establish the superiority of Samsung's own OLED panels, over competing panels made by LGD, BOE, Visionox, etc. The website does not include all phones though that use OLED displays - for example it does not include any of Apple's iPhones. 

LG Display announced that its 65-inch OLED TV panel received Carbon Trust's Carbon Footprint Certification. 

LG says that its OLED TV panel meets the global standard (PAS 2050) on GHG (Greenhouse Gas) emissions throughout the entire product life cycle.