MicroLED Transfer (Pick and place) - Page 4

Specialized Korea-based LED developer Lumens announced that it has developed a Monolithic RGB epitaxial wafers for micro-LED display production. The new technology stacks the three color LEDs on on top of the other on the wafer.

A comparison between Lumen's stacked RGB transfer process (bottom) and the standard process (top)

A stacked microLED architecture improves the performance, while also making the transfer process more productive. The company says that its design will offer a dramatic reduction in the production costs - especially the transfer process, which is reduced to a third (in terms of number of transfer steps), while also doing all the process from a single wafer.

We're happy to interview eLux, as part of our new series of interviews with MicroLED Industry Association members. eLux was established in 2016 in the USA as a spin-out from Sharp Labs of America. eLux expertise and intellectual property development focus on the massively parallel assembly processes that enable low cost manufacturing of microLED displays.

Q: Hello! Can you introduce your company and technology?

eLux, Inc. was founded in 2016 as a spin-out from Sharp Laboratories of America. eLux's objective is to develop direct emission displays based on microLED technology targeting large format displays for video wall and television applications. Core personnel of eLux, including Jong-Jan Lee (President and CEO) and Paul Schuele (CTO), had extensive experience in display development working at Sharp Labs.

A 2X8 tiled microLED display made in collaboration with a large display company shown at Touch Taiwan 2022

The work done at company headquarters in Vancouver, Washington consists of development of fundamental microLED assembly technology and characterization of display performance and reliability. Direct emission display development involves extensive collaboration with microLED suppliers and manufacturers of display backplanes, so significant effort is involved in prototype fabrication, which takes place in Taiwan.

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.

We're happy to interview ASMPT, as part of our new series of interviews with MicroLED Industry Association members. ASMPT (formerly ASM Pacific Technology Ltd.) was founded in 1975 and is a leading global supplier of hardware and software solutions for the manufacture of semiconductors and electronics. 

Q: Hello! Can you introduce your company and technology?

We are a leading global supplier of hardware and software solutions for the manufacture of semiconductors and electronics. ASMPT is the only company in the world that offers high-quality solutions for all major steps in the electronics manufacturing process: from equipment to multi-factory-level automation concepts for smart manufacturing. From carrier for chip interconnection, to chip assembly and packaging, to Surface Mount Technology (SMT), ASMPT’s offerings encompass wafer deposition and laser grooving, to the various solutions that shape, assemble and package delicate electronic and optical components into a vast range of end-user devices; these include electronics, mobile communications, computing, automotive, industrial, LED & displays.

We have participated in Mini and Micro LED development since 2016. Our core technologies in Micro LED, mass transfer and mass bonding for Micro LED, have been well developed and successfully performing in customer sites worldwide.

Today we published a new edition of our MicroLED Transfer Process Market Report, with all the latest information. The new edition includes news from related companies, new in-depth details on two transfer processes and more.

Reading this report, you'll learn all about:

• All known microLED transfer processes
• The current industry and market status
• Advantages and disadvantages of transfer technologies
• Future technologies and roadmaps

The report package also provides:

• An introduction to microLED production processes
• Over 20 presentations, brochures and technical papers
• MicroLED chip-level market estimates and forecasts
• Free updates for a year

This microLED display transfer process report provides a comprehensive look into current and future LED transfer technologies processes used for the production of microLED displays. The report covers everything you need to know about the current status of the industry.

Researchers from Xerox PARC have developed a new micro-transfer printing technique that can be used to mass-transfer microLED devices. This technology offers high performance, simple and robust structure, and high process scalability and flexibility.

The new technology uses thermally induced adhesion modulation of shape memory polymer (SMP) materials. The idea is to use a print head that uses an individually-addressable micro-fabricated resistive heater array, which locally delivers heat for transfer of single microLED devices.

Kulicke and Soffa Industries (K&S) announced that it has received two purchase orders, from two separate customers, for its LUMINEX, a disruptive laser-based mini and micro LED die-transfer solution.

K&S says that its highly flexible system is capable of single die transfer, multi-die transfer and mass transfer, supporting sorting, mixing, re-pitching and placement process steps. The broad flexibility of this system addresses the growing advanced display value chain and supports needs of LED, OSAT, panel and display suppliers.

MicroLED developer VueReal announced that it has raised $14.4 million in its latest (series B) funding round, led by Cycle Capital VC and joined by TDK, Vitro, Economic Development Canada and BDC Capital. VueReal says it will use the funds to enhance its production facility, expand the team, and gain new customers.

VueReal says that the new financing round will also enable it to offer a broader range of custom display products, for AR, smartwatches, smartphones, automotive, signage and transparent displays. Last year VueReal demonstrated high-brightness and high-transmittance transparent microLED displays which it is now offering to customers.

Today we published new versions of our market reports - that cover different segments of the microLED industry. MicroLED-Info provides comprehensive niche MicroLED market reports, and our reports cover everything you need to know about the niche market, and can be useful if you want to understand how the MicroLED industry works and what this technology can provide for your own industry. The reports are now updated to April 2022.

The MicroLED Transfer Process Report:

• Different transfer technologies and process
• Information on all companies involved in this industry
• Future technologies and roadmaps
• Information on transfer-less production

The report package also provides a complete list of microLED transfer process developers and their current (and future) products, and over 15 presentations and papers. Read more here!