Introducing the MicroLED-Connect 2025 program: mass transfer, microLED growth and full-color architectures

Mass transfer – lasers, fluids and chip-first processing

The first theme we will discuss is mass transfer. In most MicroLED production platforms, there is at least one transfer process – from epiwafer to final display, and usually at least two such processes are involved: from epiwafer to an interposer substrate (temporary holder)  and then from interposer to final display. Performing this transfer in a cost-efficient and reliable manner is still one of the major challenges the industry is facing.

At MicroLED-Connect 2025, Coherent will discuss its new turn-key last system that achieves a breakthrough in industrial microLED manufacturing, and provides a holistic solution that covers the fast and precise handling of donor wafers and receiver panels that could be backplanes or temporary carriers. Coherent’s solution offers high throughput, yield and flexibility – and can handle extremely small microLED chips.

The Holst Centre have developed an innovative and proprietary release stack that enables the rapid release of microcomponents with adaptive pitch and high selectivity using a low-cost laser source. We will hear from the holst about this new technology and its latest achievement – a transfer precision of less than 0.5 microns for InP coupons that are only a few micrometers thick, with aspect ratios of up to 10.

Korea’s Advanced View Technology will discuss its high-accuracy electrofluidic assembly technology that is used to transfer InGaN-based blue-emitting nano-LEDs. The company will discuss how this technology addresses the current technical limitations of OLED and microLED microdisplays.

Finally, UK-based Smartkem will update on its unique Chip-First OTFT backplane process. The company’s low-temperature OTFT process enables a process in which the backplane is deposited on the LEDs (rather than the other way around), thus enabling a new production paradigm for microLED displays.

MicroLED Growth: GaN Growth, 3D Nanowires and Nanopyramids

The microLED devices are the basic building block of any microLED display. There are many different methods used to create microLEDs, and during MicroLED-Connect we will hear from technology developers that detail unique processes and equipment used to create microLED chips.

NS Nanotech, a University of Michigan spin-out, commercializes an MBE method of creating 3D Nanowire based microLED devices.  These devices have the unique ability to maintain high efficiencies as the LED size becomes quite small, contrary to conventional thin-film LEDs. The company will detail its latest green (>25% EQE) and red (>8% EQE) microLEDs which are competitive with the best direct green and InGaN red LEDs ever fabricated – despite being sub-micron in size.

France’s CEA-Leti will discuss its latest research into the growth of monolithic RGB InGaN nanopyramids of diameter less than 1 µm by metal organic vapor phase epitaxy (MOVPE). The nanopyramids are obtained by nanoselective area growth using an in situ patterned epitaxial graphene on SiC as an embedded mask. The researchers will present the nanoscale optical and structural properties of these RGB nanopyramids and their high performance. 

US-based Veeco is one of the world’s leading suppliers of MOCVD machines, used to grow microLED devices. The company will present how its equipment can enable the deposition of the world’s smallest microLED emitters, and its latest achievements.

Finally, Two Photon Research Inc. will present a novel simulation tool based on the kinetic Monte Carlo Method. The company will demonstrate how this tool can model selective area growth of Gallium Nitride into Nano-columns, enabling deeper insights into the process thus helping microLED developers produce the world’s highest performance microLED devices.

Full color architectures – QDs, native Red, 3D Nanowires and color-tunable LEDs

There are several possible pathways and architectures towards full-color microLED displays: native RGB, color conversion, color tunable LEDs and more. At microLED Connect, we will learn of the latest advances in each of these possible full-color tracks.

Quantum Dots are highly promising materials for microLED color conversion. QNA Technology will present its UV-CC architecture, in which UV LEDs are used as the light generation device, and QDs are used to convert the UV light into red, green and blue. UV conversion is highly efficient, and there’s no visible crosstalk between pixels. The company will present the latest performance of its materials.

Panasonic Production Engineering will detail its high-resolution inkjet printing technology, suitable for the deposition of quantum dots on microLEDs. Panasonic uses a novel inkjet head design compatible with higher ink viscosity and with an ink circulation system to avoid particle aggregation. The company is introducing a multi restrictor inside the head to minimize ink fluid pumping pulsations on the print head, and a drive-per-nozzle technology with individual nozzle waveform control. The company will share the latest results from its research and demonstrate how it successfully fabricated color converter-type QDs on microLED dies.

China-based Raysolve Optoelectronics will detail its recent advances in single-chip integration technology, that paved the way for wafer-level full-color Micro-LED micro-display chips using quantum dots for color conversion. Raysolve have demonstrated a 0.13” 0.18cc 320x240 full-color microLED microdisplay, that achieves a peak brightness of 500,000 nits while maintaining low power consumption.

Innovation Semiconductors will present its monolithic solution that enables color tunable emission from a single MicroLED emitter, allowing fabrication and integration to occur on a single wafer. This approach leverages engineered crystal growth techniques, specifically exploiting the variations in Indium incorporation across different crystal planes. By carefully designing the LED structure using V-groove geometries and semi-polar facets, the company achieved lateral color tunability, facilitating red, green, and blue emissions from a single device.

Aledia, one of the keynote speakers at MicroLED-Connect, will update us on the company’s GaN sub-micrometer rod technology (3D nanowires), which enable the production of efficient red, green and blue emitters from the same material system, as the size of the company’s NanoLEDs can be used to tune the emission wavelength. Aledia will update on its latest performance, roadmap and achievements.

Hexagem is an early stage company that develops a bottom-up technology for producing dislocation-free, strain-relaxed InGaN microLEDs in the form of sub-micron scale hexagonal platelets. The company will update on its latest achievements that enable microLEDs with emission tunable from blue to deep red. These platelets do not suffer from plasma induced damage and exhibit internal quantum efficiency values up to 60% for deep red emitting quantum wells. 

Finally, Ingantec will update on its latest results in enabling efficient InGaN-based red LEDs through novel material techniques, especially at the extremely small die sizes. This not only provides a solution to the "green gap" problem in small red microLEDs, but also eliminates the requirement of producing full-color RGB displays utilizing LEDs from different material systems.

MicroLED-Connect 2025: time to reserve your ticket now!

These are just three sample themes from our exciting world-class agenda, that includes a range of display makers, AR developers, supply chain companies, investors and many more. MicroLED-Connect will be an excellent choice to learn the latest innovations, experience microLED displays, connect with the industry and understand the future of the display industry. Reserve your ticket before August 15 to enjoy our discounted pricing!

MicroLED-Connect 2025 – the Exhibition

The MicroLED-Connect exhibition is the key place where you can find partners across the entire value chain, including equipment manufacturers, material makers, display makers and more.

You can see our floor plan and exhibitors here. We have a few spots are still available, if you want an opportunity to exposure your technology, products or services to the microLED industry, contact us today!