Siddharth (Sid) Harikrishna-Mohan

Director of Research | DSCC
Sid Mohan

Inkjet Printing Technology: Enabling TV and IT Advances

Inkjet Printing (IJP) for use in display technologies has been investigated for over two decades. Ink jet printed polymer layers for use in OLED thin film encapsulation (TFE) process was the first mass production adoption of IJP process in OLED displays and is still widely seen as a key enabler for foldable OLEDs. On the other hand, mass producing IJP RGB OLEDs (pixel printing) has been extremely challenging; mainly due to OLED material limitations and IJP process complexities. Nevertheless, both the materials and the process continue to improve and IJP RGB OLEDs have been commercialized at very low volumes. Beyond RGB OLEDs, IJP plays a pivotal role in the display roadmap as it stands critical to enabling emerging display technologies such as QD-OLEDs and electroluminescent quantum dots (EL-QDs). In this talk, we analyze the role IJP plays in enabling in mass production of display technologies such as RGB OLEDs, QD-OLEDs and EL-QDs. We highlight the advantages and challenges of IJP and provide a market outlook for these applications.


Siddharth Harikrishna-Mohan (Sid) joined DSCC as Director of Display Research in February 2020. Before joining DSCC, Sid was Senior Manager at Kateeva where he led the R&D work on ink jet printing (IJP) of quantum dots for color conversion applications. In this role, he worked closely with Chemistry, Engineering, Sales, Marketing, Customer Support and built key relationships with panel makers and was regarded highly as the internal subject matter expert for Quantum Dot (QD) processes. Prior to Kateeva, Sid worked at Universal Display Corporation (UDC) from 2008 to 2017 where he progressed to the ranks of an R&D Team Leader. During his 9-years at UDC, he worked on conducting research and development activities relating to next-generation OLED technologies for both displays and lighting products. As a technologist, he played a crucial role in advancing numerous OLED R&D projects including UDC’s organic vapor jet printing (OVJP) process, single layer thin film encapsulation barrier film process, ink jet printing (IJP) process, flexible OLED fabrication and contributed to UDC’s vast intellectual property portfolio. As a team leader, Sid also led the team that managed the operations of UDC’s frontplane fab used for OLED device fabrication for PHOLED material qualifications and quality compliance. Sid was instrumental in maintaining partnerships with several customers, academic collaborators and held a formal Visiting Research Scholar position with University of Michigan in 2010. Before UDC, Sid’s career in display started in 2008 at Kodak where he was hired as a Research Intern. At Kodak, he designed novel thin film coatings to improve the yield of AMOLED displays and PMOLED lighting panels and concurrently completed his thesis on OLED device fundamentals.

Sid has a MS in Electrical Engineering from the University of Cincinnati and is currently working on an MBA from the University of Chicago Booth School of Business. He is listed as an inventor and co-inventor in more than 40 patents issued and pending worldwide.