Universal Display presents a four-sub-pixel AMOLED-display design at SID

May 27, 2010
Universal Display Corporation has unveiled an all-phosphorescent AMOLED display architecture that adds a light-blue sub-pixel to the conventional red-green-blue (RGB) pixel configuration.

Ewing, NJ--Universal Display Corporation has unveiled an all-phosphorescent AMOLED (active-matrix organic LED) display architecture that adds a light-blue sub-pixel to the conventional red-green-blue (RGB) pixel configuration.

According to Universal Display, the introduction of a light-blue sub-pixel can extend the operational lifetime of an OLED display and reduce the display's power consumption by as much as 33%, as compared to an RGB OLED display using a fluorescent blue sub-pixel.

Woo-Young So, research scientist at Universal Display, presented the new design yesterday in a paper titled "Power Efficient AMOLED Display with Novel Four Sub-Pixel Architecture and Driving Scheme" at the 2010 Society for Information Display (SID) International Symposium, Seminar & Exhibition (May 23 to 28; Seattle, WA).

Light-blue is energy-efficient

The pixel design reduces power consumption and extends AMOLED display lifetime by relying on the more energy-efficient, longer-lived light-blue sub-pixel to satisfy a significant portion of the blue-emission requirement. By adding a light-blue sub-pixel, the stress on the deep-blue sub-pixel is also lessened.

The company, in collaboration with Professor Jin Jang of Kyung Hee University and Samsung Mobile Display, demonstrated the four-sub-pixel architecture in a 2.5-in. all-phosphorescent AMOLED display.

About the Author

John Wallace | Senior Technical Editor (1998-2022)

John Wallace was with Laser Focus World for nearly 25 years, retiring in late June 2022. He obtained a bachelor's degree in mechanical engineering and physics at Rutgers University and a master's in optical engineering at the University of Rochester. Before becoming an editor, John worked as an engineer at RCA, Exxon, Eastman Kodak, and GCA Corporation.

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