A whopper of an OLED display

18 November 2009

The 1922mm x 3456mm display is made up of 720 discrete OLED display modules
The 1922mm x 3456mm display is made up of 720 discrete OLED display modules

Mitsubishi has released the world’s first scalable organic light-emitting diode display.

The demonstration display screen, measuring 155in diagonal has the potential to revolutionise the use of electronic displays in out-of-home applications, according to its manufacturer.

The use of digital signage systems – electronic displays showing information or advertising – is growing rapidly in shopping malls, passenger terminals and public facilities around the world. However, due to space and weight limitations, irregular size display requirements and high levels of natural light, the use of conventional technologies such as LED and LCD can prove problematic. Mitsubishi Electric believes there is significant demand for a display technology that allows the construction of lightweight screens of any shape and size, capable of delivering images of striking clarity, viewable from any angle and in normal lighting conditions. Building on its 30-year expertise of large-scale display technology, accumulated in the development of its world-famous Diamond Vision screens, the company has developed a versatile OLED display system that it believes fulfils these requirements.

The 1922mm x 3456mm display demonstrated at CEATEC is made up of 720 discrete OLED display modules that fit seamlessly together to form a continuous screen surface of 1152 pixels x 640 pixels. When viewed from 2m or more, the demonstration screen’s 3mm pixel pitch and light output of 1200 cd/m² delivers an extremely sharp, vibrant image.

Each pixel consists of an anode and a cathode, with a thin organic membrane in between. The production process developed by Mitsubishi Electric uses OLED modules that are thin, lightweight and inexpensive to manufacture. Specially-developed driver electronics and very precisely-engineered panel construction delivers a high-resolution, high-brightness and high-contrast display that is also slim and lightweight. OLED is self-luminous and requires no backlight, making it much more energy-efficient than LCD while delivering up to three times more light output. The modular construction of the Mitsubishi system means displays can be made virtually any size or shape, including curves and right-angles. Displays can now be created in spaces and in applications previously considered impractical.

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