Developing blue-emitting quantum dots is highly challenging, and researchers from the University of Tokyo says that using a new bottom-up design strategy and self-organizing chemistry they have managed to create a high purity blue-emitting QD material (with a narrow emission spectrum).

The new QDs are made from special chemical composition that combines both organic and inorganic substances, such as lead perovskite, malic acid, and oleylamine. The materials self-aligned into a cube of 64 lead atoms. The lead researcher, Professor Eiichi Nakamura, says that "it took over a year of methodically trying different things to find that malic acid was a key piece of our chemical puzzle".

In the next two weeks, Toray Research Center (TRC) is hosting online webinars focused on display technologies. TRC, who supplies technical analysis and support for R&D and manufacturing, invites you to attend the online lectures at no cost, to learn more about QD, microLED and OLED technologies.

The webinars include recorded presentations, which will be available online up until to November 22. You can register for the webinars here.

BOE Technology Group unveiled a 55" 8K AMQLED device, which is said to be the world's first such display. The display is based on QD emitters, and uses an active-matrix Oxide-TFT backplane.

BOE says that all functional layers, except the cathode, were deposited using inkjet printing.

UK-based OTFT-developer SmartKem and QD pioneer Nanosys announced a joint-development project to work on low-cost printed QD displays, that will combine SmartKem's printed organic TFT with Nanosys' quantum dots emitter platform.

Nanosys now refers to its emissive (electroluminescent) QD technology as nanoLED. Both technology platforms, the OTFT backplane and the NanoLED frontplane are solution-based, which could indeed result in a low-cost production process.

Market Analysts from UBI Research say that following an analysis of 160 patents filed by Samsung Display related to its quantum dot nanorod LED (QNED) technology, it has come to the conclusion that SDC has has completed the development of the QNED display structure.

UBI says that Samsung still needs to find a way to maintain the number of aligned nanorod LEDs within each pixels, though, so the development is not finished yet.

China-based BOE shows its latest emissive-QD display (AMQLED) at SID Displayweek 2021:

The 55-inch display offers a 3840x2160 (4K) resolution, a contrast ratio of 1,000,000 : 1 and a wide color gamut (90% BT2020). BOE says that all the functional layers of this display (HIL, HTL, QD and ETL) were ink-jet printed which enable BOE to achieve a material utilization rate of over 90%.