Jan Gülink | QubeDot: Why is pick-and-place obsolete for high-resolution microLED displays?
00:13:18 - 00:15:12
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Why is pick-and-place obsolete for high-resolution microLED displays?
Manufacturing a standard 4K display requires assembling approximately 25 million individual microLEDs. Even with a theoretical transfer yield of 99.99%, a display would still suffer from over 2,400 dead pixels, posing severe repair and redundancy challenges. Traditional pick-and-place equipment operating at 100,000 components per hour would take roughly ten days to build a single display, making high-throughput parallel transfer a commercial necessity.
To address this bottleneck, laser-induced forward transfer (LIFT) is emerging as a critical enablement technology. LIFT enables massive parallel assembly, reaching transfer rates of up to 130 million components per hour. This laser-based method decouples transfer speeds from mechanical placement limits, making mass production economically viable.
In addition to high transfer rates, successful assembly requires robust metallurgical bonding. QubeDot couples LIFT and laser lift-off (LLO) workflows with fine-pitch indium deposition. This process ensures reliable electrical and mechanical micro-bonding between the transferred microLEDs and the underlying backplane.
In this short video, you can learn:
* Why a 99.99% transfer yield still leaves thousands of dead pixels on a standard 4K microLED display.
* How laser-induced forward transfer (LIFT) achieves throughputs of over 130 million units per hour.
* The role of fine-pitch indium deposition and laser lift-off (LLO) in achieving robust micro-scale bonds.
📋 **Clip Abstract**
Jan Gülink analyzes the mathematical bottleneck of transfer yields in high-resolution microLED displays and evaluates why traditional pick-and-place fails. He presents Laser-Induced Forward Transfer (LIFT) as a high-throughput solution capable of transferring 130 million devices per hour.
🔗 Link in comments 👇
#LaserInducedForwardTransfer, #LaserLiftOff, #FinePitchIndium, #MassTransfer, #MicroLEDDisplays, #DisplayManufacturing
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03:31 - 04:44
How do you build a 0.5-inch transparent micro-LED display with 250 segments and over 10 million nits?
How do you build a 0.5-inch transparent micro-LED display with 250 segments and over 10 million nits?
The display goes down to five micrometres of LED size, with roughly 250 segments on a 0.5-inch diagonal, and here more than 10 million nits have been achieved. That combination of segment count, sub-ten-micrometre emitters and extreme luminance defines the device. The architecture places all segments in the middle, with outer contact pads allowing the die to be positioned wherever board space is available.
How does it work at the end? It is a BGA-like component: you know BGA components from electronics, where you can just set one onto your PCB or onto your interposer, and this is kind of the same here. So we have a display with all segments in the middle and some outer contact pads that you can place with every place that you have available.
This can be integrated either in transparent mode, as shown, where you can actually look through the gallium-nitride-on-sapphire transparent monolithic display, or, due to its high brightness, in a classical projection solution. The device is produced in Europe, from the company's own site. Such a high-brightness, transparent monolithic micro-LED layout is what the classical technologies needed here require.
In this short video, you can learn:
* LED size reaches five micrometres, with about 250 segments on a 0.5-inch diagonal and more than 10 million nits achieved.
* The package is BGA-like, with all segments in the middle and outer contact pads placeable wherever PCB or interposer space exists.
* The gallium-nitride-on-sapphire transparent monolithic display also suits classical projection thanks to its brightness, and is produced in Europe.
📋 **Clip Abstract** A 0.5-inch diagonal display with roughly 250 segments, five-micrometre LEDs and over 10 million nits is built as a BGA-like component that drops onto a PCB or interposer. It runs either as a transparent gallium-nitride-on-sapphire monolithic display or, because of its high brightness, in classical projection, with production in Europe.
About the speaker:
* Speaker: Jan Gülink
* Company: QubeDot
* Event: Eindhoven 2026
* Location: High Tech Campus, Eindhoven
#MicroLEDSegments, #GalliumNitrideOnSapphire, #TransparentMonolithicDisplay, #BGAIntegration, #MicroLEDDisplays, #ProjectionDisplays
08:51 - 10:22
What does a one-inch, 1920x1200 CMOS-bonded micro-LED display deliver in nits, pitch and refresh rate?
What does a one-inch, 1920x1200 CMOS-bonded micro-LED display deliver in nits, pitch and refresh rate?
QubeDot's solution for larger arrays is a one-inch diagonal CMOS-based micro-LED display: 11 micron pitch, nine micron pixel size, 1,920 by 1,200 resolution, and one million nits. It was built in Europe and produced in Europe within a controlled supply chain. The enabling steps are LED processing and 200-millimeter wafer-to-wafer bonding of the gallium and silicon wafer to the CMOS backplane, keeping yields under control at the large display and die sizes presented.
The one-inch display uses an IPM CMOS backplane. It delivers up to 120 hertz refresh rate and is overall SWaP optimized for the sweet spot of size, weight and power. Depending on APL level, it was measured up to 10 million nits. In principle the backplane can supply up to 40 micron per pixel, giving even more headroom if the thermals are under control and that output is really needed.
The stated numbers fix the trade space: 11 micron pitch and nine micron pixels at 1,920 by 1,200, one million nits and up to 10 million nits measured as APL varies, with 120 hertz refresh. The 40 micron per pixel backplane headroom is explicitly conditional — thermals must be controlled. Yield at these large die sizes is what makes the 200-millimeter wafer-to-wafer bonded CMOS route viable.
In this short video, you can learn:
* A one-inch diagonal CMOS micro-LED display reaches 1,920 by 1,200 resolution at 11 micron pitch with nine micron pixels.
* It runs up to 120 hertz and was measured up to 10 million nits depending on the APL level, alongside one million nits.
* The backplane can supply up to 40 micron per pixel, headroom that is gated by thermal control.
📋 **Clip Abstract** A one-inch diagonal CMOS-based micro-LED display was presented with 11 micron pitch, nine micron pixels, 1,920 by 1,200 resolution, one million nits, and European production inside a controlled supply chain. It bonds gallium and silicon wafers to an IPM CMOS backplane at 200-millimeter wafer-to-wafer scale, runs up to 120 hertz, is SWaP optimized, measures up to 10 million nits depending on APL, and offers 40 micron per pixel headroom if thermals are controlled.
About the speaker:
* Speaker: Jan Gülink
* Company: QubeDot
* Event: Eindhoven 2026
* Location: High Tech Campus, Eindhoven
#WaferToWaferBonding, #CMOSBackplane, #MicronPitchMicroLED, #TenMillionNits, #MicroLEDDisplays, #ARDisplays
05:36 - 07:14
Why did micro-LEDs fail to become the universal display technology, and where does 75% of manufacturing sit?
Why did micro-LEDs fail to become the universal display technology, and where does 75% of manufacturing sit?
The announcement was based on LCOS and reflective waveguides rather than micro-LEDs, and that brought the mood down last year. By 2026 there are many diverse players for everyday AR glasses, all offering monochrome micro-LED light engines in real products — think Urealities, think Rokid. China and Taiwan are the centre of gravity for that supply.
Micro-LEDs are not the universal next display technology that everyone thought about five, six or seven years ago, simply because the industry touched manufacturing reality. Most smart glasses are sold with all displays, and most micro-LED light engines aim at an 0.1-inch size, both to have the costs and to be integrated into wearables or the frames of glasses.
Seventy-five percent of the manufacturing capacity for micro-LEDs can be found, for example, in China or Taiwan, while Europe is only in the single digits. That raises two main questions: what about Europe, and what about larger displays if everybody is for the B2C products? Those two questions matter for Europe's role in capacity and for whether micro-LEDs move beyond small light engines.
In this short video, you can learn:
* Seventy-five percent of micro-LED manufacturing capacity can be found in China or Taiwan, with Europe in the single digits.
* Everyday AR glasses from Urealities, Rokid and others offer monochrome micro-LED light engines in real products.
* Micro-LEDs are not the universal next display technology expected five to seven years ago, because the industry touched manufacturing reality.
📋 **Clip Abstract** Last year's LCOS and reflective-waveguide announcement brought the mood down, but by 2026 everyday AR glasses from players such as Urealities and Rokid ship monochrome micro-LED light engines. With 75% of micro-LED manufacturing capacity in China or Taiwan and Europe in single digits, the open questions are Europe's role and whether micro-LEDs can serve larger displays beyond B2C products.
About the speaker:
* Speaker: Jan Gülink
* Company: QubeDot
* Event: Eindhoven 2026
* Location: High Tech Campus, Eindhoven
#MicroLEDLightEngines, #MonochromeMicroLED, #ZeroPointOneInch, #ReflectiveWaveguides, #ARDisplay, #MicroLED