At the 1st Automotive Display Industry Forum, Muhyun Kim, CEO of Amplitude Korea, introduced why femtosecond lasers are used in OLED manufacturing processes and their key application areas under the theme “OLED Display Module Process and Laser Technology.” Kim is an OLED process expert with experience in foldable display module processes and small and medium-sized OLED module development at Samsung Display.
Amplitude global network and Amplitude Korea introduction (Source: Amplitude)
Kim explained that the role of laser technology in OLED processes is expanding beyond simple cutting to precision processing and repair applications. Femtosecond lasers are ultrafast lasers that use extremely short pulses on the order of 10^-15 seconds, and are characterized by their ability to reduce the heat-affected zone compared with conventional nanosecond and picosecond lasers. By minimizing the formation of cracks, burrs, and molten layers during processing, and by enabling a lower taper angle, femtosecond lasers are well suited for high-precision processes such as ultra-thin OLED, Micro OLED, camera holes, shape cutting, and repair.
In OLED manufacturing, lasers are used for backplane annealing and repair, laser drilling and cell cutting in deposition and cell processes, and hole cutting and shape cutting in module processes. In particular, for products such as automotive OLED and foldable OLED, where design flexibility and reliability are both required, laser processing quality can directly affect the completeness of the panel.
Amplitude, founded in 2000, is a company specializing in ultrafast lasers and supplies industrial laser solutions for displays, semiconductors, consumer electronics, and microprocessing applications. Amplitude Korea supports ultrafast laser application technologies for domestic display and semiconductor customers.
Changwook Han, Executive Vice President/Analyst at UBI Research (cwhan@ubiresearch.com)
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