4/29/2023 0 Comments Coherent laser lift off microled![]() ![]() ![]() Laser-assisted mass transfer is offered by 3D-Micromac AG and Coherent. Stamp transfer processes are proving reliable, scale-able and capable of high throughput, but further process optimization is needed to achieve six 9s yield. X Display Co., the sister display company to X-Celeprint, recently delivered its first 300 mm transfer tool, and it licenses many of its technologies for MicroLED manufacturing. An adhesive ink grabs an array of MicroLEDs, and printing is performed using laser or other means. Each stamp is custom fabricated from injection-molded polydimethylsiloxane (PDMS) and consists of glass backing (for rigidity), a smooth PDMS layer and PDMS “posts” that are lithography-defined and etched for high accuracy in placement. Perhaps the most mature transfer option, according to Yole uses a polymer stamp to move thousands of LEDs, such as in X-Celeprint’s Micro Transfer Printing process. ![]() A Wide Variety Of Methods Are Being Explored To Effect Mass Transfer Of Thousands Of MicroLEDs Simultaneously ![]()
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