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Tuesday, May 31, 2011
TDK Develops Transparent High-Definition Organic Electroluminescent Display


TDK has started mass production of a newly developed transparent passive matrix type QVGA organic EL display (product name: UEL476) for mobile devices.

The OLED panel is a passive-matrix type and has a screen size of 2.4 inches. Its pixel count is 240 x 320 (QVGA). It can display color images.

Organic EL displays are formed through thin-film techniques, using organic material that emits light in response to an electric current. High brightness, wide viewing angle and other favorable characteristics make this display type very relaxing to view, and since it also achieves fast response, Organic EL displays have been adopted for wider use in flat panel displays. All organic EL displays from TDK employ the passive matrix principle. The newly developed transparent type is mainly intended for use as the main display panel in mobile phones and other mobile devices.

The type organic EL display for mobile applications has a field angle of 2.4 inches, a transmittance of 40 percent, and a brightness of 150 cd/m2. Although the display is transparent, it is constructed so that the display contents cannot easily be seen from behind, to protect the user's privacy.

Main Specifications

- Display area: 36.0 ? 47.9 mm
- Number of pixels: 240 x320 RGB
- Brightness: 150 cd/m2


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