Kyulux, established in Japan in 2015, develops next generation materials for OLED displays and lighting.
Based on exclusively-licensed technology from Kyushu University, Kyulux develops hyperfluorescence TADF emitters that will enable cost-effective, durable and efficient OLEDs that do not rely on rare metals. Kyulux’s first aim is to develop commercial red, green and yellow hyperfluorescence emitter/host combinations, to replace the 2nd-Gen phosphorescent emitters currently used in OLED displays and lighting panels.
The latest Kyulux news:
TADF, or Thermally Activated Delayed Fluorescence, is a relatively new class of OLED emitter materials that promise efficient and long-lifetime performance without any heavy metals. TADF research started at around 2012, originally at Kyushu University in Japan and today many academic groups and several commercial companies are developing TADF materials.
The main reason companies are interested in TADF emission is that it could lead to an efficient and long-lasting blue OLED emitter - something that hasn't been yet achieved by other means (mainly - UDC's Phosphorescent OLED emitter technology). In recent years companies initiated commercial development of red, green and yellow TADF emitters as these can offer a lower cost alternative to UDC's PHOLEDs materials.
Wisechip announced that it launched the world's first Hyperfluorescence OLED display - a 2.7" monochrome yellow 128x64 PMOLED. The brightness of this display reaches 220 nits - which is 2.5 times the brightness of Wisechip's fluorescent yellow PMOLED. The lifetime of this display is 50,000 hours.
Hyperfluorescence OLED emitters represent the 4th-generation of OLED emitter systems. HF is an actually a system that combines fluorescence emitters (1st-gen) with TADF (3rd-gen) hosts - to achieve a high efficiency , long lifetimes and narrow-spectrum emission.
TADF and Hyperfluorescence developer Kyulux announced that it finalized its Series B financing round, having raised ¥1.5 billion ($31.8 million USD) from several companies and VCs. Kyulux says it will use the funds to further accelerate product development and strengthen its IP.
A couple of months ago Kyulux updated on its latest TADF device that achieves 200 hours of lifetime (LT95 at 1000 nits) and an EQE of 22% (at 1000 nits). The color point is 470 nm (which is not deep-blue, note). Kyulux also says that Wisechip is now ready to start producing the yellow HF PMOLED and is seeking customers.
TADF, or Thermally Activated Delayed Fluorescence, is a relatively new class of OLED emitter materials that promise efficient and long-lifetime performance without any heavy metals. TADF was discovered 10 years ago, and the 4th International TADF Workshop will mark the event.
The TADF Workshop will cover a diverse range of topics in TADF, excitonic materials, physics and devices - including a special focus on device architectures, up-conversion mechanisms, radical (doublet) emitters and perovskite emitters.
In June 2018 Kyulux and Wisechip unveiled a PMOLED display that uses Kyulux’s Hyperfluorescence yellow emitter. Kyulux updated today that Wisechip is now ready to start producing the HF panel and is seeking customers.
Wisechip eventually settled on a large panel - 73.00 x 41.86 mm (2.7") with a resolution of 128x64. Wisechip says that the power consumption of its HF display is almost half of its regular fluorescent yellow PMOLED.
The first day of the OLED Korea 2019 conference is almost over - with some interesting lectures and talks by leading OLED companies and professionals. Here are some of the things under discussion today (highlights only):
- Some believe there will be a real market for >$2,000 foldable OLED devices, and some call for cost reductions before real adoption could take place
- LG Display is optimistic regarding the future of OLED TVs
- Samsung will not commit yet to its QD-OLED technology
- Both Cynora and Kyulux are rapidly progressing towards a long lasting TADF/HF blue - but it seems there's still work to be done
- Idemitsu Kosan is increasing its fluorescent OLED emitter efficiency
- Universal Display's RGBB architecture is back on the table - and the company now highlights the architecture's low blue light emission. UDC seems more optimistic then ever regarding blue PHOLED commercialization
- Equipment maker's focus is shifting to China as Korean OLED makers will not increase capacity in the near future
Kyulux signs JDA agreements with both SDC and LGD - aims to have commercial ready TADF/HF emitters ready by mid 2019
Kyulux announced that it has signed joint-development agreements (JDAs) with both LG Display and Samsung Display. The LGD agreement was signed in January 2018 while the SDC one was recently signed. Both agreements focus on deep blue Hyperfluoresence / TADF emitters.
Kyulux hopes that by collaborating with the two leading OLED producers, it will be able to accelerate its material development - and it aims to have commercial red, green and blue HF/TADF emitters ready by mid 2019.
An interview with Cynora's CMO Dr. Andreas Haldi - talking about TADF, lifetime, color points and more
German TADF developer Cynora presented its latest blue TADF material in May 2018 - with a CIEy of 0.14, EQE of 20% and a lifetime of 20 hours LT97 at 700 nits. Cynora expects to have blue material in the mass production by 2020.
Cynora's Chief Marketing Offer, Dr. Andreas Haldi was kind enough to answer a few questions we had regarding TADF emitters, the differences between next-generation emitter technologies, lifetime, color points and more.
Kyulux announced that it has developed a new blue Hyperfluoresence/TADF OLED emitter. Kyulux managed to extend the lifetime of the material and reached 100 hours at LT95 (@ 750 cd/m2) while maintaining a high EQE of 26% - 22% at 1,000 cd/m2. The emission wavelength is 470 nm.
Kyulux says that its blue Hyperfluorescence emitter is the world’s top performing material at the moment. Kyulux now aims to work together with OLED panel makers to improve the systems further by optimizing the device structure and the rest of the OLED stack in pilot production lines.
Kyulux and Wisechip unveiled a flexible PMOLED display that uses Kyulux’s Hyperfluoresence yellow emitter. Wisechip says that the power consumption of this display is almost half of Wisechip's regular fluorescent yellow PMOLED.
The first flexible HF PMOLED is a 1.71″ 256x64 display, that is now ready to be produced (Wisechip says this will enter mass production before the end of 2018). Wisechip originally aimed to introduce its first glass-based HF yellow emitter PMOLED by the end of 2017, but it seems they decided to jump straight to a flexible panel.