TDK has started mass production of worlds first, a newly developed see-through passive matrix type QVGA organic EL display (product name: UEL476) from this spring. All organic EL displays from TDK employ the passive matrix principle. The newly developed see-through type is mainly intended for use as the main display panel in mobile phones and other mobile devices. The see-through type organic EL display for mobile applications has a field angle of 2.4 inches, transmittance of 40 percent, and brightness of 150 cd/m2. The newly developed product is a see-through type, but is constructed so that the display contents cannot easily be seen from behind, to protect the user’s privacy.
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 easy on the eye, 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 see-through type is mainly intended for use as the main display panel in mobile phones and other mobile devices.