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Optoelectronics/Displays??

56 inch OLED panel made through RGB all-printing

Posted: 16 Jan 2013 ?? ?Print Version ?Bookmark and Share

Keywords:OLED panel? RGB all-printing method? thin-film-transistor? substrates? electroluminescent layer?

Panasonic has recently unveiled what they tout as the world's largest OLED panel produced through the "RGB all-printing" method, which applies materials to the substrate through a printing technique to form an electroluminescent layer. The panel that Panasonic has produced features 8.29 million pixels in a 3840x2160 resolution format.

The RGB all-printing method allows for the separate application of the red, green and blue OLED materials. Panasonic has developed the equipment and process technologies to apply the materials uniformly to a large substrate.

Due to the simplicity of the production process, it is expected that the technology will be easily adaptable to the production of OLED panels in a variety of screen sizes. Through the printing method, it is also possible to apply just the right amount of organic material to where it is needed, reducing waste material and shortening production lead time, making the printing method of production more economical.

The company's proprietary top emission structure with a transparent cathode, can extract light more efficiently, it supports excellent colour reproduction and a wide viewing angle. As OLED panels are self-illuminating devices, they deliver superb picture quality with high contrast, high colour reproduction and a fast response rate. They also combine the advantages of plasma and liquid crystal display panels, such as an ultra-thin profile, light weight and low power consumption. Panasonic is also collaborating with Sony Corporation to develop mass-production printing-based technology for OLED panels. The thin-film-transistor (TFT) substrates used in the prototype panels were supplied by Sony as part of the collaborative efforts.

- Julien Happich
??EE Times Europe





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