Micro-LED videos

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.

MicroLED-Connect is an upcoming hybrid event series, a year-long program of virtual and onsite events, all focused on the microLED industry. The first MicroLED Connect virtual event is coming up later this month, a 2-day virtual event that will be focused on microLED (and also miniLED) technologies. The event will include over 25 lectures from leading companies, researchers and market analysts. The series is organized by the MicroLED Industry Association together with TechBlick.

In this post we share three online presentations, taken from last year's online microLED event (November 2022). The first video, above, is from the SSLEEC group (led by Prof. Denbaars and Prof. Nakamura) at the University of California, Santa Barbara, that discusses the latest microLED research performed at this world-renowned group. 

Avicena, a developer of microLED-based chip-to-chip interconnects, discussed its solution at OCP Summit 2023. Avicena's LightBundle interconnect architecture is based on arrays of innovative GaN microLEDs that are integrated directly onto high performance CMOS ICs. Each microLED array is connected via a multi-core fiber cable to a matching array of CMOS-compatible PDs.

Avicena recently unveiled the world's first 1Tbps microLED-based Transceiver IC in 16nm finFET CMOS. The company says that its microLED-based LightBundle interconnects offers much lower power and latency, higher bandwidth and lower cost compared to current solutions based on VCSELs or Silicon Photonics. 

The W Hotel in Taipei has an old Philips OLED installation (called You Fade to Light, designed by rAndom International creative studio). This beautiful piece consists of 2,000 modules, each lighting up as a response to people moving in front of it.

Due to the limited lifetime of the OLED devices, after years of use the installation started to fail and fade (which is rather ironic, given its name). PlayNitride collaborated with the hotel to replace the OLED panels with microLED powered panels. Each single module included over 14,000 microLEDs, and in total there was over 30 million microLEDs - 20% more than the number of microLEDs in a 4K display.

US-based Saphlux has developed a 0.39" full-color microLED Microdisplay, based on the company's NPQD color conversion technology. You can see a sample of Saphlux's T1-0.39 RGB display in the video below. 

Saphlux's first microdisplay offers a maximum white brightness of 250,000 nits, and a wide color gamut. The company is using high-EQE blue microLEDs (it has a partner that supplies the LEDs) and its NPQD technology achieves 67% photon conversion efficiency. The company's technology enables a pixel pitch of sub-2 microns. 

Taiwan-based MicroLED developer PlayNitride (a MicroLED Industry Association member) has demonstrated its latest microLED displays at Display Week 2023.

First up we have the company's tiled large-area microLED displays, called PixeLED Matrix. The company showed a 166" vertical installation, that is made from 324 modules. The total resolution is 1440x4860 (30 PPI, or a pixel pitch of 0.833 mm). This was a very nice looking demonstration.

Taiwan-based Innolux demonstrated several new microLED display prototypes at Display Week 2023.

First up is a small round active-matrix 1.1" 374x374 (338) PPI microLED panel. This one was produced on an LTPS backplane and offers a brightness of 500 nits (relatively low for a microLED display. The LEDs are 40 um in size.

China-based microLED display developer Sitan Technology demonstrated its latest microLED displays at Display Week 2023.

The company has developed four microLED microdisplays: 0.13" 1024x748 monochrome, 0.18"  800x600 monochrome, 0.18” 600x400 full-color and a 0.45" monochrome FHD panel. The company's 0.13" display offers a display density of 10,000 PPI (monochrome). The company also showed small transparent microLEDs.

During Display Week 2023, Seoul Semiconductor demonstrated new prototype display modules that use its WICOP microPixel technology. WICOP Pixel is a full-color one-chip vertically-stacked microLED technology that does not require wire bonding, packaging, or lens, and enables easier microLED display production.

Seoul Semi updates that its latest WICOP Pixels reach a brightness of 10,000 nits (up from 4,000 in its previous generation technology).

During Display Week 2023, Tianma demonstrated its latest microLED display prototypes - all of which are transparent displays, stating that the main application for such displays is in the automotive sector.

The first display is a 8.75" panel, offering a resolution of 880x480 (114 PPI), a brightness of 800 nits and high transparency of over 70%. The display is an active-matrix microLED produced on an LTPS backplane.