Additive and Green PCBs, Perovskite QD, Pick-and-Place for Flexible Hybrid Electronics, Nanscale printing, MicroLED Interconnects, Red GaNs, and more

venessa50
Jul 9
3 min read

In this newsletter we cover the following

Is additive manufacturing of PCBs more environmentally friendly than traditional subtractive processes? | Lina Kadura from CEA-Liten
Pick and place machines for Flexible Hybrid Electronics? | Irving Rodriquez, Essemtec
Print nanoscale structures with varying or gradient material compositions? | Gauthier Briere, Atlant 3D
Microdispensing in microLED interconnect production? | XTPl
Can perovskite QDs be used as color conversion in microLED displays? | CEA Leti's Prof. François Templier
How can the LED industry adapt to the needs of microLED displays? | ALLOS Semiconductor
How will perovskite panels perform in the 'real world'? | Microquanta's Yang Chen
Are microLEDs really more efficient than OLED displays? | UCSB, Prof. DenBaars

We cover these points by sharing short (1min or so) handpicked snippets from their live recent talks at TechBlick and MicroLED Connect conferences and exhibitions

Is additive manufacturing of PCBs more environmentally friendly than traditional subtractive processes?

Lina Kadura from CEA-Liten presented at TechBlick Innovation Day in April 2025, showing that life cycle analysis (LCAs) demonstrate that the GWP index - the Global Warming Potential - can be reduced by 50% just by switching to additive, without even changing substrates away from FR5!

This clearly demonstrates that additive electronics and printed electronics can make electronics more sustainable and greener

Pick and place machines for Flexible Hybrid Electronics?

Irving Rodriguez from Essemtec presented recently at the TechBlick Innovation Day, showcasing their all-in-one system able to achieve pick-and-place, solder as well as glue jetting a single machine with a footprint less than 1 square meter and with the ability to change the printing value in less than 30 seconds.

Here you can also see the machine for flexible hybrid electronics where the special vacuum table holds down the foil (substrate), allowing the placement of 0.1 or 0.2 mm up to 109 mm components on flexible hybrid electronics!

The pick and place is often a critical challenge in realising printed hybrid systems and this machine offers a powerful solution.

Print nanoscale structures with varying or gradient material compositions?

Direct Atomic Layer Processing (DALP) can enable multi-material direct micron- or nano-scale atomic layer deposition or printing! Here the lateral feature size is determined by the microreactor, while the vertical feature size is controlled by the ALD process itself. This allows for highly controlled and repeatable patterning of materials like metals, oxides, and nitrides.

Here Gauthier Briere, formerly at Atlant3D, showcases a unique ability of this technology, namely the ability to print ultrafine structure with varying metal gradients / material compositions and heights. This is an ability that almost no other method can match

Microdispensing in microLED interconnect production?

Tiled microLED displays usually use electrodes deposited on the edges of the tiles, as these need to connect seamlessly.

In December 2024, during our Display Innovation Day, XTPL presented their solution for high-performance Edge-Type conductive interconnect deposition. Here 10um wide lines with 15um spacing using highly conductive and dense silver paste is printed directly around the edges connecting the front and back

Can perovskite QDs be used as color conversion in microLED displays?

Perovskite quantum dots are highly promising materials, with excellent potential in display applications, especially for color conversion in microLED displays.

In December 2024, during our Display Innovation Day, CEA Leti's Prof. François Templier presented the latest research results, including their ability to achieve densities of 1 micron or even less, thanks to the perovskite materials.

How can the LED industry adapt to the needs of microLED displays?

The LED industry is not optimized for producing microLED for display applications. What kind of changes will the industry adopt in order to mass produce low-cost and high-performance microLED chips?

In September 2024, during our flagship 2024 MicroLED-Connect event, ALLOS Semiconductor explained the required manufacturing systems for successful microLED production, and gave an introduction to the company's GaN-On-Silicon 300 mm production technology and expertise.

Are microLEDs really more efficient than OLED displays?

And how will vertically-stacked LEDs increase performance?

In September 2024, during MicroLED-Connect's flagship event in Eindhoven, UCSB's Prof. DenBaars presented the latest state-of-the-art LED research results, detailed the lab's work on tunnel-junction technology that enables single-chip full color solutions, and explained why native red microLEDs are still a big challenge.

How will perovskite panels perform in the 'real world'?

Perovskite solar panels are highly promising, but people still wonder just how perovskite panels will perform in the 'real world'.

In April 2025, during our Perovskite Innovation Day, Microquanta's Yang Chen details the latest performance of the company's perovskite panels - showing how they generate more electricity than silicon in harsh environments.