Document (#27864)

Author
Gerl, B.
Title
Displays von der Rolle
Source
Spektrum der Wissenschaft. 2004, H.10, S.64-67
Year
2004
Series
Kunststoffe
Abstract
Leuchtdioden aus Kunststoff schicken sich an, unseren Alltag zu verändern
Content
"Es scheint grotesk: Da hat man sich für teures Geld einen Beamer geleistet, um Heimkino auf der Höhe der Zeit zu erleben oder Kunden Geschäftsideen nahe zu bringen, doch ein Teil der Technik stammt noch aus der Stummfilmzeit: die Projektionsleinwand. Einen wirklichen Ersatz gibt es nicht, denn Monitore, ob ein Plasma-, LED- oder Kathodenstrahlbildschirm, bieten kein so großes Format und sind nicht flexibel zu verstauen. Doch das wird sich ändern, sobald OLEDs (organic light emitting Biodes) die in sie gesetzten Erwartungen erfüllen. Und das ist nicht wenig: OLED-Displays sollen heller sein als die von Laptops her bekannten Flachbildschirme und dabei noch weniger Energie verbrauchen. Denn deren Bildpunkte (Pixel) basieren auf Flüssigkristallen (liquid crystal display, LCD), die so angesteuert werden, dass sie das Licht einer Hintergrundbeleuchtung sperren oder nach vorne durchlassen. Deshalb sieht der Betrachter auch nur dann ein helles Bild, wenn er direkt vor dem LCD-Schirm sitzt. OLEDs aber leuchten selbst, strahlen also hell in alle Richtungen."

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