QuantumDots-Info: the QD experts

QuantumDots-Info is a knowledge hub focused on the Quantum Dots industry and markets, with a focus on quantum dots for displays.

Recent Quantum Dots News

MSI to launch an ultra-wide QD-OLED Monitor in early 2023

MSI says it will launch an "super ultra wide" QD-OLED monitor in early 2023 (during the CES conference). The company did not disclose much - beyond saying that it will offer a 240Hz refresh rate, and that its current name is Project 491C.

Samsung is the only QD-OLED Panel maker, and it does not offer a 240Hz panel yet (the only monitor-sized QD-OLED is a curved 34-inch 175Hz 3440x1440) - so it seems as if MSI is using a panel that hasn't entered production yet. This will be interesting to watch!

Read the full story Posted: Nov 27,2022

Samsung said to increase QD-OLED capacity to produce 27-inch monitor panels for Apple

According to a report from Korea, Samsung Display has decided to increase its QD-OLED production capacity, and start making panels for monitors, with sizes of around 27-inch (currently the smallest QD-OLED panel in production is 34-inch). Samsung aims to supply these panels to Apple.

Samsung Display QD-OLED panels at CES 2022

It is said that SDC debated whether to adopt RGB (direct-emission) OLED displays for its future monitor panels, but the lower cost of producing QD-OLED panels led Samsung to this decision. It will continue to produce RGB OLEDs for its tablet and laptop displays.

Read the full story Posted: Nov 10,2022

Researchers from the University of Japan develop a narrow-spectrum blue QD emitter

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".

Read the full story Posted: Nov 08,2022

Toray Research Center to host a QD, OLED and MicroLED technology webinar

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.

Toray Research Center TRC banner

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

Read the full story Posted: Nov 08,2022

Samsung's QD-OLED TVs may be forced to reduce brightness due to new EU energy-saving regulations

According to reports in Korea, following the EU's stricter energy-saving requirements from televisions may restrict Samsung Electronics from selling its latest QD-OLED TVs in Europe.

Samsung Display QD-OLED panels at CES 2022

The reports suggests that Samsung is looking into reducing the brightness of its QD-OLED TVs in order to remain within the safe zone of the new regulations, which will be enforced in March 2023.

Read the full story Posted: Oct 21,2022

Meta announces the Quest Pro XR headset with QD-enhanced LCD displays

Meta announced its latest VR headset - which is actually a mixed-reality device (AR or MR/XR) as it allows pass-through video feed. The device is based on QD-enhanced LCD displays and also features a Qualcomm Snapdragon XR2 Plus, and several cameras from the inside (eye and face tracking) and outside.

The Meta Quest Pro costs $1,500 - and will ship before the end of October 2022.

Read the full story Posted: Oct 13,2022

QuantumDots and microLEDs: Selected Technology Highlights by TechBlick

This is an article by TechBlick, organizers of the upcoming QuantumDots Displays virtual event. QuantumDots-Info readers get a 100 Euro discount.

In this article, using select technology slides, we highlight several interesting advancements in MicroLED and/or QD displays. More specifically, we cover 3600PPI “Silicon” Displays | Gravure printed microbumps | Electrohydrodynamically printed QD color converters | Laser LLO and Transfer for MicroLEDs | QD vs Phosphors | Energy saving credentials of microLED

“Silicon” Displays with an incredible 3600ppi full color using microLED and QD technology?

Sharp (HIRANO Yasuakie et al) has developed this technology.

As shown in the slide below, first blue-only uLEDs are formed on a sapphire substrate. Here, one LED array contains 352 x 198 micro LED dies of 24 um x 8 um in size. In parallel, an LSI chip containing the driving circuitry is formed on a silicon wafer. Here, the cathode (N-type electrode) and anode (P-type electrode) are fabricated for each micro LED die to apply driving voltage independently to each die. The Au bump electrodes are fabricated in accordance with the pitch of the LED dies. The two substrates are flip-chip bonded using Au-Au bonding. Here one can already see the parallel to the silicon and optoelectronic industry (vs. the traditional thin film display industry!). Next, the sapphire layer is removed via laser lift off. Finally, Cd-free quantum dots (green and red) are deposited atop the microLED dies to enable R G color conversion. This way one achieves RGB colors

The device architecture is shown in slide 2- here one can see the location of GaN uLED dies, Au bumps, as well as light shielding walls and quantum dots (QDs). This way, a full color 1,053 ppi display is formed.

Read the full story Posted: Sep 21,2022