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The enhancement of the out‐coupling efficiency of organic light‐emitting diodes (OLEDs) is still the subject of research and development. Bottom‐emission OLEDs emit light through the glass substrate into air. Due to the difference of the refractive indices between glass and air, a significant amount of light is reflected at the glass–air interface back into the glass because of total internal reflection...
Portraiture is a major art form in both photography and painting. In most instances, artists seek to make the subject stand out from its surrounding, for instance, by making it brighter or sharper. In the digital world, similar effects can be achieved by processing a portrait image with photographic or painterly filters that adapt to the semantics of the image. While many successful user‐guided methods...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.