| Dec 27, 2023 |
|
(Nanowerk Information) MicroLEDs are a light-weight supply for next-generation shows that make the most of inorganic LED chips with a measurement of lower than 100 µm. MicroLEDs have attracted an excessive amount of consideration because of their superior electrical/optical properties, reliability, and stability in comparison with standard shows corresponding to LCD, OLED, and QD.
|
|
To commercialize microLEDs, switch printing expertise is crucial for rearranging microLED dies from a development substrate onto the ultimate substrate with a desired format and exact alignment. Nonetheless, earlier switch strategies nonetheless have many challenges corresponding to the necessity for added adhesives, misalignment, low switch yield, and chip harm.
|
|
Professor Lee’s analysis group has developed a micro-vacuum assisted selective switch printing (µVAST) expertise to switch numerous microLED chips by adjusting the micro-vacuum suction power.
|
|
|
|
The analysis was printed in Nature Communications (“Common selective switch printing through micro-vacuum power”).
|
|
The important thing expertise depends on a laser-induced etching (LIE) technique for forming 20 μm-sized micro-hole arrays with a excessive facet ratio on glass substrates at fabrication velocity of as much as 7,000 holes per second. The LIE-drilled glass is related to the vacuum channels, controlling the micro-vacuum power at desired gap arrays to selectively decide up and launch the microLEDs.
|
 |
| Idea of micro-vacuum assisted selective switch printing (μVAST). (Picture: KAIST)
|
|
The micro-vacuum assisted switch printing accomplishes the next adhesion switchability in comparison with earlier switch strategies, enabling the meeting of micro-sized semiconductors with varied heterogeneous supplies, sizes, shapes, and thicknesses onto arbitrary substrates with excessive switch yields.
|
|
Professor Keon Jae Lee mentioned, “The micro-vacuum assisted switch supplies an attention-grabbing software for large-scale, selective integration of microscale high-performance inorganic semiconductors. At the moment, we’re investigating the switch printing of economic microLED chips with an ejector system for commercializing next-generation shows (Massive display screen TVs, versatile/stretchable units) and wearable phototherapy patches.”
|
