The newly-developed organic EL panel (right) and an organic EL panel made by using an existing technology (left)
The newly-developed organic EL panel (right) and an organic EL panel made by using an existing technology (left)
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Nippon Seiki Co Ltd developed a technology to reduce the power consumption of a passive matrix organic EL panel by 75% and commercialized a small green monochrome display by using the technology.

The company will start sample shipment in March 2010. It announced a 0.8-inch green monochrome organic EL panel March 16, 2010, and it plans to develop panels of other colors including white.

Nippon Seiki has been mass-producing organic EL panels since 2004, defining them as key devices for adding value to its main products including panels for automotive gauges, mobile phones and measuring instruments.

However, existing organic EL panels consume more electric power than LCD panels. And it has been difficult to use them to replace, especially, LCD panels used in mobile phones, mobile measurement tools and other devices powered by batteries as well as panels used in home electric appliances, which need to have a low standby power consumption. That's why the company started to lower the power consumption of organic EL panels.

The power consumption of the new organic EL panel is equivalent to that of an LED-backlit LCD panel, Nippon Seiki said. The prototyped 0.8-inch green panel can reduce power consumption by 75% without lowering visibility, compared with the company's existing 0.8-inch product. By using the new power-saving technology, it plans to expand the use of organic EL panels.

The lower power consumption was realized by making improvements to the structure of an organic EL element, production processes, manufacturing management and so forth, Nippon Seiki said. Especially, its know-how is used to improve the production processes including a packaging process.

The company claims that other companies could not develop the same technology even if they spent a year. It plans to develop white and amber color panels while taking advantage of being the inventor of the new technology and lead its competitors.

The new technology can be used to enhance the brightness of an organic EL panel instead of lowering its power consumption.

"For example, our users demand a high visibility for automotive panels," Nippon Seiki said. "By improving the brightness of an organic EL panel, we will be able to expand the sales of automotive panels.