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Posted on April 14, 2017

The world's largest OLED with graphene electrodes

Printed, Organic & Flexible Electronics Forecasts,
ETRI, together with Hannah Techwin, says it has developed transparent electrodes for OLED displays out of graphene. The team succeeded in using graphene to replace indium tin oxide (ITO). ITO is highly fragile whereas graphene is flexible and resistant to chipping.
 
The team used graphene on the largest OLED panel on earth, which is 370 millimeters in length and 470 mm in width. The thickness of the team's graphene electrode was less than 5 nanometers reports the Korea Herald.
 
The team also developed a process for patterning graphene-based transparent electrodes with specific numbers and shapes on the OLED substrates, which could be used in creating flexible smart devices in the future.
 
By using the new material, the commercialization of flexible OLED products can move forward, according to Cho Nam-sung, head of ETRI research team. "It is meaningful that we are the first to apply graphene to OLED panels," Cho told the Korea Herald. "The technology would help elevate Korea's OLED panel technology by widening the technology gap with Chinese rivals."
 
The team also plans to develop plastic OLED electrodes by next year, and aims to help commercialize flexible and fordable OLED panels in five years.
 
Top image: ETRI
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