MicroLED-Info.com: the Micro-LED experts

Researchers from the University of Sheffield a new fabrication process for green InGaN microLEDs that achieves high brightness compact microLED arrays.

Today most green InGaN microLEDs are produced by combining a standard photolithography technique with subsequent dry-etching processes on a standard III-nitride LED wafer. The researchers found a way to avoid the dry-etching processes which damage the surface the resulting LEDs. In the new process, the InGaN stack is direectly grown within pre-patterned micro-hole arrays through a thin (500nm) SiO₂ layer serving as a GaN template over the epitaxial wafer.

Rohinni demonstrated its latest technology and prototypes at CES 2020, and this interesting video shows the company's booth and provides an interview with the company's CEO.

On display you can see some flexible lighting prototypes, an LCD display backlighting unit that uses mini LEDs, automotive solutions developed by the Rohinni and Magma JV, keyboard backlights from its Luumii JV and finally some microLED display prototypes made by the BOE Pixey JV.

In June 2019, AR developer Mojo Vision announced that it developed a 14k sub-pixel PPI Micro-LED microdisplay, to power its upcoming AR platform. The company now revealed that its technology actually embeds the microLED microdisplay in a contact lens.

Mojo Vision has been in stealth mode until now - as the company finally revealed its technology and demonstrated a lens mounted to a handheld stick that you can peer through to see a demo loop comprised of green text overlaid on real world objects.

MicroLED-Info and Perovskite-Info are happy to announce the 2020 edition of The Perovskite Handbook. This book is a comprehensive guide to perovskite materials, applications and industry, and it is now updated to January 2020 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
  
  

UK-based GaN-On-Si MicroLED microdisplay developer Plessey Semiconductor demonstrated several new microLED technologies at CES 2020. First up we have a Head Up Display (HUD) for automotive applications, that is based on a 0.7" blue monochrome MicroLED display:

This same display was demonstrated at SID DisplayWeek 2019, and uses JDC's silicon backplane. The next display is a native red InGaN microLED. This is the first time this display was demonstrated:

iBeam Materials announced that it had successfully demonstrated the ability to produce high-performance GaN Field-Effect Transistors (FETs) directly on thin, flexible and rollable metal foil substrates.

This new technology complements iBeam's microLED deposition technology (demonstrated in the video above), and these FETs can be integrated with microLED chips in a side-by-side architecture. Both FETs and MicroLEDs are deposited on the flexible substrate without any transfer process.

MicroLED-Info is proud to present The MicroLED Handbook. This book is a comprehensive guide to MicroLED display technology, industry and market. MicroLED displays are thin, efficient, bright and flexible and are on track to revolutionize the display industry.

Reading this book, you'll learn all about:

• MicroLED technology, materials and production processes
• How MicroLEDs compare to LCDs and OLEDs
• What are the challenges towards commercial production
• LED technology and manufacturing processes
• MicroLED driving and full-color architectures
• The MicroLED displays currently on the market

The MicroLED-Info team is excited to announce its attendance at the Mobile World Congress 2020 on February 24-27 in Barcelona, Spain. The Mobile World Congress (MWC) is the world's largest gathering for the mobile industry, organized by the GSMA. It features a large exhibition, conference programme and networking opportunities.

We are looking forward for a great event and great new microLED prototypes and technologies on display.

Shanghai-based Micro-LED microdisplay developer JBD unveiled two new Micro-LED microdisplay prototypes. First up is the JBD5UM720P-G, a 0.31" 720p (1780x720, 5,000 PPI) display that features a typical brightness of 3 million nits (!). This is a monochrome green (530 nm) display.

The second display, the JBD25UMFHD-B is a higher density display, at 10,000 PPI it achieves a 2560x1440 resolution in the same 0.31" size. This is a monochrome blue (455 nm) display that has a brightness of 150,000 nits. The display's refresh rate is 360Hz.

Taiwan's Industrial Technology Research Institute (ITRI) demonstrated a 16.7" microLED display "module" that was produced by directly mass transferring micro-LED chips onto a PCB backplane.

ITRI developed its own mass transfer tech, and uses microLEDs provided by PlayNitride, PCB backplanes provided by Unimicron and drivers and assembly by Macroblock. The 16.7" display is made by tiling 15 modules 6x10 cm each (45,000 LEDs). The microLEDs are <100um in pitch.