Quantum Dots - Page 4

MicroLED-Info and Perovskite-Info are happy to announce the 2023 edition of The Perovskite Handbook. This book is a comprehensive guide to perovskite materials, applications and industry, and it is now updated to January 2023 and lists recent developments and new companies, initiatives and research activities.

Perovskites are an exciting class of materials that feature a myriad of exciting properties. Perovskites are now entering the display market, with applications in quantum dots, LEDs, lasers and more.

Reading this book, you'll learn all about:

• Different perovskite materials, their properties and structure
• How perovskites can be made, tuned and used
• What kinds of applications perovskites are suitable for
• Perovskites Quantum Dots
• Perovskite solar cells, their merits and challenges
• Perovskites-based LEDs
• The state of the perovskite market, potential and future
   

The book also provides: a history of perovskite research, a guide to perovskite companies and developers, information on leading collaboration and development projects, a comprehensive list of perovskite companies and much more!

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 microLED, OLED and QD technologies.

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

Hong Kong based microLED microdisplay developer Raysolve Technology announced its first demonstration of a microLED microdisplay - a full-color 0.39" display.

The display is based on blue LEDs and a photolithographic QD color conversion layer. Raysolve is using a unique process, which is semiconductor process compatible, to create a novel optical design and material structure that achieves higher contrast, improved colors and a more efficient display.

QustomDot announced an agreement with France-based 3D GaN LED developer Aledia to co-develop a full-color microLED displays, based on Aledia's high-efficiency Gan-on-Silicon 3D Nanowire LEDs grown on 300 mm wafers coupled with QustomDot's high performance quantum dots color conversion technology.

QustomDot developed a patented method to produce high-quality and stable QD materials suitable for microLEDs, that are heavy metal free. A few months ago the company announced it is co-developing microLED displays with MICLEDI.

TechBlick will soon host its virtual microLED and QD event, and here is a good preview of some of the technologies and advances that will be detailed during the event. MicroLED-Info readers enjoy a special discount to this interesting upcoming industry event.

We highlight important advancements in MicroLED and/or QD displays in this article using technology slides. These advancements of the art will be presented at TechBlick’s 2-day global conference on “Mini- & Micro-LED Displays: Markets, Manufacturing Innovations, Applications, Promising Start-ups” taking place online in TechBlick’s ‘in-person virtual’ platform on 30 Nov - 1 Dec 2022.

The agenda includes the likes of Samsung, Sharp, AUO, Coherent, ASMPT, Komori, CEA, Micledi, 3D Micromac, Allows Semiconductors, and many more. Full agenda can be seen here.

This conference is supported by the MicroLED Association.

In May 2021 Quantum Dots developer Nanosys acquired 3D Nanowire microLED display developer Glo. The company today announced that it is selling its GaN MicroLED fab and its related engineering team to Avicena, a startup that develops microLED-based optical interconnects. Nanosys received an equity stake in Avicena.

Avicena will use the fab and team to develop and produce high-speed GaN microLEDs optimized for parallel multi-Tbps interconnects. Before the agreement, Avicena was using the Nanosys fab for the development of its microLEDs.

This is an article by TechBlick, organizers of the upcoming MicroLED Displays virtual event. MicroLED-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.

We're happy to announce an update to our Perovskite for the Display Industry Market Report. This market report, brought to you by the world's leading perovskite and MicroLED industry experts, is a comprehensive guide to next-generation perovskite-based solutions for the display industry that enable efficient, low cost and high-quality display devices. The report is now updated to September 2022, with all the latest commercial and research activity.

Reading this report, you'll learn all about:

• Perovskite materials and their properties
• Perovskite applications in the display industry
• Perovskite QDs for color conversion
• Prominent perovskite display related research activities

The report also provides a list of perovskite display companies, datasheets and brochures of pQD film solutions, an introduction to perovskite materials and processes, an introduction to emerging display technologies and more.

QustomDot and MICLEDI announced a joint  development program to develop color microLED microdisplays using QustomDot's color conversion technology. The companies will demonstrate a microdisplay that offers a new architecture tailored for high-efficiency color conversion using stable RoHS-compliant QD materials. The displays will be produced using a high-throughput QD transfer and patterning techniques on micron-sized pixels.

QustomDot developed a patented method to produce high-quality and stable QD materials suitable for microLEDs. MICLEDI is producing its microdisplays on 300 mm wafers, and the company developed a new pixel architecture that has been optimized for high-aperture (>60% aperture at a 3μm pixel pitch) which the company says is a key requisite to achieve a high brightness with quantum dots.