Speaker: Robert Jan Visser, PhD, Sr Director CTO Group Applied Materials
Title: Thin Film Encapsulation and R2R Barrier Films for Flexible OLED Displays
Abstract: From the moment the first OLEDs were created by Tang and Van Slyke, people realized that the device would probably be quite sensitive to water and oxygen and that you could prevent those compounds from reaching the device by putting a hermetic thin film over the device. That simple agenda turned out to be a lot more complicated than initially thought; while a perfect, defect free, thin film of SiOx or SiNx would be able to protect the device from degradation, it was both by the extreme moisture sensitivity of OLED devices and the inability to make defect free films that it took a long time to realize this dream. After Heeger et al showed that you could introduce flexibility by using a plastic substrate it became even more attractive to find a solution for thin film encapsulation; it would enable the creation of super thin flexible displays. In the talk Dr. Visser will discuss the problems and solutions which were found for realizing this goal and the equipment which Applied Materials has developed to successfully encapsulate OLED devices. In addition Dr. Visser will discuss new R2R equipment and processes to create ultrahigh barrier films on a very large scale.
Speaker Biography: Dr. Robert Visser is senior director of advanced chemistry and materials for the Advanced Technology Group at Applied Materials, Inc. He is responsible for creating business opportunities in new and adjacent markets related to displays and roll-to- roll barrier films, as well as developing novel chemistries for semiconductor manufacturing. For more than 30 years, Dr. Visser has pioneered research and commercialization of display technologies related to thin film transistors, LCD materials, barrier films (including encapsulation materials), OLED and flexible displays. Prior to joining Applied, he was CTO of Vitex Systems, where he guided the company through conceiving and demonstrating the feasibility of multi-layer thin film encapsulation technology, to the industrialization of its manufacturing equipment and transformation into a technology licensing company. Dr. Visser also spent 18 years in various roles at Philips Research, including CEO and CTO of the PolyLED business. Received a Special Award from SID in 2016 for his work on OLED and Thin Film Encapsulation. Dr. Visser holds a master’s degree in theoretical organic chemistry and physics, and a Ph.D. in physical and organic chemistry, both from Leiden University, Netherlands.
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