Quantum Dots - Page 6

Helio Display Materials, based in the UK, was spun-off from both Oxford and Cambridge University, to commercialize photoluminescent and electroluminescent perovskite-based materials for the display industry - with solutions for the OLED, LCD and Micro-LED markets.

Our sister site, Perovskite-Info, posted an interview with Helio's CEO, Simon B. Jones, discussing the company's technology and business.

The local government of China's Guangzhou province announced that it now offers large subsidies (up to $285 million USD per company) to encourage emerging technology production in the province.

The government announced a list of emerging display technologies - which include OLEDs, quantum dot displays, e-paper displays, graphene enhanced display technologies - and microLED displays.

The Fraunhofer IAP and Korea Electronics Technology Institute (KETI) have launched a joint research project to develop ink-jet printed quantum dots color filters for microLED displays.

The five-years CoCoMe (Color Converting MicroLeds) project aims to develop materials and processes to achieve high brightness microLEDs using quantum based color filters.

HDTVTest posted an interesting interview with Cadmium-Free QD developer Nanosys CEO and president Jason Hartlove. In this long interview Jason discusses the company's technology and recent achievements.

Jason explains that producing an RGB Micro-LED has many challenges as each color micro-LED chip is different - and different color LEDs need slightly different voltages and drive currents. The mechanical placement of these chips is also much more difficult for three colors. Using single-color (blue) Micro-LED chips and color-converting them using QDs makes a lot of sense for such displays - with easier manufacturing, longer lifetime, less differential aging (burn-in) and a wider color gamut.

UK-based GaN-on-Si MicroLED developer Plessey Semiconductor announced a partnership with Quantum Dots developer Nanoco. Plessey aims to integrate Nanoco's cadmium-free quantum dots into its micro-LED displays.

Using a quantum-dot coating, Plessey will be able to use only blue micro-LEDs in its microdisplays, and convert the blue light to red and green to create full-color displays (in a similar way to today's QD-enhanced LCD displays). Plessey says that this design will enable it reduce its pixel pitch from 30 μm to just 4 μm, a reduction of 87%. The QD-enhanced micro-LEDs will also have a wide color gamut and will be more energy efficient compared to Plessey's current phosphor-based architecture.

The MicroLED-Info team takes pleasure in recommending our new book - The Perovskite Handbook. This book gives a comprehensive introduction to perovskite materials, applications and industry. Perovskites offer a myriad of exciting properties and has great potential for the display industry.

We believe that any display professional would find that perovskite materials are an area of focus that should not be ignored. The promising perovskite industry is currently at a tipping point and on the verge of mass adoption and commercialization and the first display-related perovskites are already reaching the market.

Samsung already announced that it plans to ship its first Micro-LED TV, the 146" modular Wall TV, in August 2018, and today the company says it will reveal the prices of these TVs in June 2018. Prices are expected to over >$100,000 for the 146" model.

Samsung's Visual Display Business VP, Han Jong-hee, also revealed that the company has an R&D project that aims to use quantum-dots in Micro-LED arrays. The basic idea is to convert blue micro-LEDs to white light, which will enable easier production processes as the whole TV will use a single LED color.

Researchers from Fudan University, Shanghai develop a high-bandwidth white-light based system made from a blue gallium nitride (GaN) micro-LED with a yellow-emitting perovskite quantum dots. This system could be a way to enable high-speed real-time visible light communication (VLC).

The researchers used a 80 x 80 um blue-emitting micro-LED that has a modulation bandwidth of about 160 MHz and a peak emission wavelength of ~445 nm. The white-light system (following the perovskite QD conversion) achieves 85 Mhz - which means a maximum data rate of 300 Mbps.

Following Samsung's unveiling of its 146" Micro-LED TV prototype, LG Display's CEO said that LGD is also developing Micro-LED technologies for large >150" panels.

LG Display sees several technical challenges ahead before it could launch such a display commercially - and it also has concerns regarding the production costs of huge MicroLED TVs. In the meantime the company is focused on its OLED TV technologies.