MicroLED - The Leading Candidate for Next-Generation Displays
MicroLED is expected to be the leading candidate for next-generation displays.The challenge is said to be in the implementation. We have enabled fine solder paste printing using gravure offset printing technology. Utilizing the fine and high-precision characteristics of gravure offset printing, solder paste can be accurately printed on TFT substrates.We have achieved a resolution below φ10μm and positional accuracy within ±5μm across a 300mm square substrate, which was not possible with conventional screen printing. Compared to commonly used ACF, it offers advantages in terms of cost, resistance, pressure, and reflow temperature.
TFT Backplane
Print solder paste on contact points using gravure offset
Implement microLED elements
Printing results on glass substrate
Reflow on Cu substrate (formic acid)
