PPI

Korea's ETRI demonstrated a 4,000 PPI 720x540 monochrome microLED display, produced using its proprietary SITRAB bonding technology. The researchers at ETRI says that this demonstration showcases a scalable alternative to hybrid bonding for ultra-high-resolution integration.

1 µm Solder Bumps at 4 µm Pitch, enabling a 4000 PPI microLEDF

The device was fabricated by bonding microLED chips to a silicon backplane using a Cu pillar / Sn solder cap structure with approximately 1 µm bump diameter and 4 µm bump pitch. 

Innolux will be showcasing its latest microLED display technologies at CES 2026. It released some initial information, which we detail below, hopefully next week we will be able to share more.

First up, Innolux is showing a new transparent microLED display, that it calls a MicroLED Display Window. Innolux did not share any technical details, but it says that the display offers high clarity, high transmittance, high brightness, and high resolution.

China-based microLED microdisplay developer JBD launched a new color projector module, branded as Roadrunner I. The company says that this new product achieves smaller pixel size and increased optical efficiency compared to its earlier generation products, translating into a substantial advantage in overall form factor and image performance for full-color AR smart glasses.

The Roadrunner I projector utilizes JBD's latest 10,160 PPI (2.5 um pitch) Hummingbird monochrome microLED microdisplay, that JBD announced two months ago. The display module offers a 25-degrees field of view (FOV) and achieves an angular resolution of up to 32 pixels per degree (PPD), delivering an increase of over 20% relative to previous products from JBD. The Roadrunner I can operate at 480 Hz, an ultra-high refresh rate. 

TCL CSOT is showing a new single-chip full-color microLED microdisplay at its Global Display Tech-Ecosystem Conference (DTC 2025) in Suzhou, China.

The display is a 0.28" 1280x720 panel (5131 PPI) which TCL says is the world's highest resolution single-chip full-color microLED microdisplay. It's not clear if TCL means that it's the world's highest-res single-panel full-color microLED display, or that the display is based on a blue microLED with QD color conversion (and hence single-chip).

During the K-Display 2025 conference, Samsung Display unveiled a new flexible wearable microLED display. This new panel offers a brightness of 6,000 nits, and a density of 326 PPI. 

Samsung says that this new display has 700,000 microLED chips, each 30 um in size. This means the resolution is likely to be 640×360. The size, in that case, will be about 2.25 inch diagonal, which is quite large for a smartwatch.

At Displayweek 2025, TCL CSoT demonstrated several new microLED displays. The most interesting one seems to be the world's smallest microLED microdisplay at 0.05-inch. The display offers a density of 5080 PPI, and a brightness of 4 million nits. This is the first time TCL shows a microLED microdisplay.

OLEDs and MicroLEDs by TCL CSoT, SID Displayweek 2025

TCL also showed a large format display, a 219-inch 5760x1440 120Hz tiled display. The company did not disclose any technical specifications. The company also showed a microLED display designed for automotive HUD applications, that offers a brightness of up to 45,000 nits and a wide FOV.

In August 2023, China-based BOE HC Semitek started building its $700 million microLED epiwafer production line in Jinwan District, Zhuhai, China. In October 2024, the company announced that it started producing sample wafers.

A few days ago the company held a ceremony as it is starting to mass produce 6-inch microLED wafers, as the project enters its commercial stage. BOE now has a full microLED industry chain, from epiwafers to modules and applications.

HKC unveiled its first microLED display prototype, a 6.67" 100 PPI (roughly 580 × 325) panel that offers 1,000 nits of brightness, and a 99% DCI-P3 color gamut. 

HKC's display is produced on the company's high mobility oxide (HMO) backplane. The company says that its HMO material offers an electron mobility that is 20 to 50 times higher than that of amorphous Silicon (a-Si).

Researchers from the Chemnitz University of Technology have combined several new technologies to enable high density high-brightness microLED displays. The researchers demonstrated a 3400 PPI 1080x780 monochrome green display with a brightness of over 10,000,000 nits.

To achieve this high performance display, the researchers used wafer-scale high-quality epitaxial growth, sidewall passivation, efficient photon extraction, and elegant bonding technologies.

X Display Company (XDC) has announced that it has developed a new micro-IC driven microLED display in collaboration with Lumileds. XDC says that its micro-IC architecture is efficient and also cost-effective to produce, and is already ready for mass production.

The two companies developed a 140 PPI display that uses Lumiled's 13x20 micron LEDs, and XDC's own microIC backplane technology. The display offers high brightness (2360 nits peak) and an excellent image quality.