Researchers from Korea University, with colleagues from Shivaji University and Gyeongsang National University, have developed a transparent resistive memory device designed to drive individual microLED pixels, offering an alternative to the thin-film-transistor-and-capacitor circuits used in conventional active-matrix backplanes.

This research targets a persistent problem in transparent microLED displays, where the driving element must combine low off-state current, stable multilevel switching, and high optical transmittance. The researchers say that oxide-based transparent memories tend to exchange oxygen with the indium tin oxide (ITO) electrodes, producing high leakage and unstable switching, while nitride-based devices are more stable at the interface but usually switch abruptly between two states because of deep nitrogen-vacancy traps, making reliable grayscale operation difficult.

Visionox's microLED spin-off, Vistar (also known as Chenxing Optoelectronics), announced that it has successfully raised its Series B funding round, led by CICC Capital's Sichuan Advanced Manufacturing Guide Fund. Other participants include CCB Investment, Source Code Capital, and Chengdu Science and Technology Investment.

Vistar did not disclose the actual raised amount, but we know that the funding round totaled "hundreds of millions of Yuan", so it is likely to be in the range of $30 million to $130 million  USD. The company says the funds will be used to accelerate its microLED ramp-up towards mass production. 

Microled-Info, together with TechBlick, invites the community to join the upcoming Innovations Festival, a free-to-attend online event taking place on July 10, 2026 (14:00–20:00 CET).

The event will bring together engineers, researchers, entrepreneurs, display makers, and industry stakeholders working across MicroLEDs, AR/VR, advanced displays, and next-generation electronics. MicroLED technologies will be a central theme, featured alongside adjacent developments that are critical for future display ecosystems, from advanced materials to novel integration and manufacturing approaches.

In 2019 San'an Optoelectronics announced that it is planning to build a $1.78 billion miniLED and microLED production site in Hubei. The plans, originally, was to start production in March 2021. The construction was delayed, though, due to the Covid-19 pandemic, and a few years later San'an delayed its plans and aimed to start producing LEDs in Hubei in 2026.

Today San'an announced that it is delaying the production of miniLED and microLED at the Hubei plant - to June 2028. San'an said that the decision to delay was due to macroeconomic volatility, sluggish markets and slower-than-expected progress in critical microLED processes. So far the company invested 51% of the $1.78 billion, and as it "aims to avoid premature capacity buildup amid market uncertainty".

We’re pleased to feature Sundiode, stacked-RGB microLED microdisplays developer, in our latest MicroLED Industry Association spotlight series.

We spoke with James Kim, Sundiode's CEO and co-founder, to learn more about the company's technology, business, achievements and goals.

Can you introduce your company and technology?

Sundiode is a company in Silicon Valley developing microLED technologies. Sundiode uniquely focuses on utilizing 3D fabrication of LED devices that allows vertical stacking of LEDs, where the resultant multiple junctions advantageously lend themselves to next generation microLED pixel technology. Applied to displays, the technology allows full-color RGB microdisplays with ultra-high resolution and exquisite display quality. Sundiode is a fabless company and has been developing the Stacked MicroLED device technology in Campbell, CA, in the US and is commencing making commercial successes.

Researchers from China's Fudan University, in collaboration with researchers from Peking University, have developed high-performance microLED arrays, on diamond substrates, suitable for optical I/O.

The research combines several enabling technologies, including long-wavelength InGaN epitaxy, three-quantum-well active region design, diamond heterogeneous integration, transfer printing and two-photon fabricated microlenses. This resulted in highly efficient microLEDs, with very low drive currents and excellent energy efficiency. The researchers say that the diamond substrates effectively suppress self-heating, enabling high-speed operation while significantly improving thermal management compared with conventional glass substrates.

Taiwan-based MicroLED developer PlayNitride held its Q1 2026 earnings call, during which CEO Charles Li detailed the company's progress on its tandem (stacked) microLED chips and its full-color monolithic microdisplays for AI glasses, and reaffirmed PlayNitride's position as the only vertically-integrated microLED maker that has mastered epitaxy, chip manufacturing and mass transfer in production. The company also shared its latest financial results.

The main technology highlight was PlayNitride's next-generation tandem stacked microLED microdisplay. Li said the architecture, which has been in development for around two years, started shipping to customers for use in end products in 2026, and delivers a 50% to 80% improvement in light efficiency. Li said that PlayNitride is currently the only company that can stably mass-produce these increasingly complex microLED devices.

Ennostar and Saphlux have signed a strategic partnership to accelerate the commercialization of Saphlux's semi-polar microLED technologies, for both AR microdisplays and optical I/O solutions.

This collaboration will combine Saphlux's proprietary semi-polar GaN material platform with Ennostar's large-scale manufacturing capabilities.

Following our earlier listing of the MOCVD microLED R&D and production equipment being sold by an East-Coast U.S. company — headlined by a new, almost never-used 200 mm Veeco Propel GaN MOCVD system — we wanted to share a brief update. The listing has drawn interest from a number of companies, labs and research institutes, and conversations with potential buyers are underway.

The seller has let us know that it expects to reach a decision on the buyer (or buyers) within roughly the next four weeks. Anyone who has been weighing this equipment may therefore want to make their interest known before then.

Microled-Info, together with TechBlick, invites the community to join the upcoming Innovations Festival, a free-to-attend online event taking place on July 10, 2026 (14:00–20:00 CET).

The event will bring together engineers, researchers, entrepreneurs, display makers, and industry stakeholders working across MicroLEDs, AR/VR, advanced displays, and next-generation electronics. MicroLED technologies will be a central theme, featured alongside adjacent developments that are critical for future display ecosystems, from advanced materials to novel integration and manufacturing approaches.