MicroLED inspection

Rayleigh Vision's CEO gives us the latest updates and his views on the microLED industry, towards his upcoming talk at MicroLED-Connect

Rayleigh Vision was established in 2023 in Hong Kong, to developed stacked microLED microdisplay technologies. The company's technology enables the stacking of LEDs on top of each other, to create high-density displays. The company's founder and CEO, Prof. Jr-Hau HE, will give a talk at the upcoming MicroLED-Connect startup showcase event on February 2024, and was kind enough to answer a few questions we had regarding the company's status, technology, and his views on the microLED industry and market.

Hello Prof. Jr-Hau, Can you tell us a bit your company, and technology, and your next steps?

Rayleigh Vision is a company that specializes in disruptive MicroLED technology, with a focus on solutions for full-color microdisplays. Our team includes pioneers in MicroLED technology, who have over a decade of experience in this field.

Although we've seen significant advancements in MicroLED technology, challenges remain. These include developing a full-color solution for microdisplays, improving mass transfer efficiency, and enhancing process yields. From the perspective of microdisplays, achieving a full-color display with a high Field of View (FOV) and Pixels per Degree (PPD) is crucial for an immersive Extended Reality (XR) experience. However, no product currently on the market meets these specifications. 

Read the full story Posted: Dec 27,2023

Time to reserve your ticket now for the MicroLED-Connect startup showcase in February!

MicroLED-Connect is a hybrid event series, a year-long program of virtual and onsite events, all focused on the microLED industry. The first online 2-day webinar was hosted successfully last month, with over 25 lectures (all recordings accessible for pass holders). The next event is a startup showcase, that will be hosted on February 22, 2024.

MicroLED Connect banner

The startup showcase includes lectures from 8 leading microLED startup companies, covering topics such as microdisplays, AR headset development, microLED production, transfer processes and microLED inspection.

Now is a great time to reserve your ticket and make sure you stay updated with the latest innovation from the following startup companies: Rayleigh Vision, Inziv, Comptek Solutions, QustomDot, Terecircuits, iBeam Materials, Kura Vision and NS Nanotech. You can read the complete agenda here.

Read the full story Posted: Dec 20,2023

Exaddon launches 20um 3D printed probes for microLED testing

Exaddon developed a unique micro 3D Printing technology that enables it to produce probes that can access and test pads and bumps with pitches of less than 20 micron. The company says that this unique method halves the current limit of fine-pitch probing, enabling microLED developers testing options that haven't been available before.

Exaddon's μ3D printing technology delivers high quality printed metal with micrometer resolution. Exaddon’s initial microLED test array is 3D printed directly on prepatterned traces with a pitch of less than 20 μm; This demonstrator validates Exaddon’s process on microPCBs for mounting on current probe heads. With 128 probes, the array gives microLED testers a 64x increase in efficiency.

Read the full story Posted: Nov 22,2023

Researchers from the University of Strathclyde develop a continuous roller microLED transfer-printing process

Researchers from the UK-based University of Strathclyde, led by Dr. Eleni Margariti, developed a new microLED transfer process, based on a continuous, single shot roller transfer printing process.

The researchers say that this process can enable large-scale integration of microLEDs. The system they developed can transfer an array of 320x240 pixels (over 75,000 microLEDs) in a single shot, with sub-micron relative position accuracy. The transfer printing process preserves the array geometry with pixel spatial location error less than 1 µm deviation from the as-designed layout. 

The researchers also employed an automated sub-micron precision metrology system based on simple optical microscopy, to asses such large device populations and allow the assessment of yield.

Read the full story Posted: Jul 15,2023

InZiv launches an industrial-level high-speed wafer-level microLED inspection system

InZiv announced a new industrial-level microLED inspection system, called the REL. The company says that this new system provides unprecedented speed wafer-level EL testing of microLEDs. The REL system can rapidly obtain EL measurements on a microLED wafer, with up to 6 million LEDs in 1 hour.

The company's unique technology offers repeatable, high- accuracy measurements, with no damage to the device. The system is fully compatible with both vertical and flip-chip designs. InZiv says that the REL offers the most critical and reliable microLED inspection on the market, enabling the advancement of all microLED applications. The company is already working on its next-generation system, which will double the output.

Read the full story Posted: May 09,2023

A spotlight on InZiv: a MicroLED Industry Association member

We're happy to interview InZiv, as part of our series of interviews with MicroLED Industry Association members. InZiv develops testing and inspection equipment for display makers focusing mostly on MicroLED displays (but also QLED and OLED).

Q: Can you introduce your company and technology?

InZiv is a leader in display testing and inspection, providing high-resolution testing and inspection equipment to today’s foremost advanced display developers and manufacturers. InZiv’s proprietary nano-optical technology specializes in microLED displays, but also extends to QLED and OLED. With the size of pixels now reaching the single-micron scale, our testing equipment provides comprehensive data and nanometric resolution, empowering display manufacturers to improve their manufacturing processes, lower production costs, and enable greater access to the use of these displays by all consumers. Based in Israel, the company was founded in 2018, and counts a number of the world’s leading display manufacturers among its customers.

Read the full story Posted: Feb 27,2023

High Throughput Micro-LED Test Probe and Solution

This is a sponsored post by STAr Technologies

With more and more mature technology for Mini- and Micro-LEDs fabrication, manufacturers are gearing up for the production phase and critically looking for more test efficiency and fast testing for the optical devices. STAr Technologies, as the leading Mini- and Micro-LEDs tester supplier continuously develops measurement technology to enhance optical testing capabilities and parallel test efficiency and to achieve cost-effective high-volume production.

Image: STAr Unicorn-LAIT II Tester Equipped EMI Shielded Test Environment

STAr’s Unicorn-LAIT II tester is designed to meet diverse industry requirements and to ensure accurate and reliable measurement results in the shortest amount of test time, based on an integrated parallel test architecture. The tester is ideal for electrical, optical measurement, driver functionality, RGB testing, etc. The tester is equipped with high efficient Dark and EMI Shield test environment dedicated to LED and Laser Applications. The system can be upgradeable with an autoloader for a fully automatic test with a cassette.

Read the full story Posted: Nov 28,2022

Spotlight on Radiant Vision Systems: a Microled Industry Association member

Today we're starting a new series, of interviews with MicroLED Industry Association members. The first company we interview is Radiant Vision Systems, and we have Shaina Warner, Radiant''s Marketing Program Manager.

Q: Can you introduce your company and technology?

Radiant develops and manufactures test & measurement solutions that are used to evaluate the visual quality of displays, backlit components, LEDs, other light sources. Using photometric and colorimetric imagers calibrated to a model of human visual perception, Radiant offers the most sophisticated inspection technology for ensuring light-emitting products meet customer expectations for quality and performance.

Leaders in consumer electronics, virtual & augmented reality, automotive, aerospace manufacturing, and beyond rely on Radiant to ensure accuracy, automate quality control, reduce costs, and improve efficiency. We have over 30 years of proven production experience with thousands of cameras testing millions of lights and displays worldwide. We’re also happy to be a global organization, offering direct local access to products and support that help equip our customers for success.

Q: Can you say why you joined the microLED association and what it is you hope to achieve?

Read the full story Posted: Sep 20,2022

Applied Materials Baccini Cell Systems provides advanced screen printing solutions for microLED production

This is a sponsored post by Applied Materials

Applied Materials Baccini Cell Systems provides advanced screen-printing solutions and systems for a wide range of applications - including for MicroLED production.

Here is an interview we conducted with Applied Materials' Director of Global Product Marketing, Daniel Hada, who details the company's solutions for MicroLED production and R&D.

Q: Can you tell us a little bit about Applied Materials' Baccini systems? What kind of systems are you offering?

We provide advanced screen-printing solutions for both R&D applications and high volume manufacturing. All Baccini systems are built for sheet-to-sheet printing, either on flexible or rigid substrates. In addition to our screen-printing capabilities, we also provide customers with different drying and curing solutions, in-line inspection systems to monitor the quality of the print immediately after the print, and fully automated print lines to enable low cost, and high volume manufacturing. Utilizing Baccini’s Esatto technology which provides high accuracy and high print repeatability, we developed the Double Print technology years ago, to allow print on print capability for printing narrow lines/small features with high aspect ratios and to minimize interruptions in the printed lines.

 

Read the full story Posted: Dec 20,2021