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SOLED (stacked organic light-emitting device)

SOLED (stacked organic light-emitting device) is a display technology from the Universal Display Corporation (UDC) that uses a stack of transparent organic light-emitting devices ( TOLED s) to improve resolution and enhance full-color quality. SOLEDs use a pixel architecture developed at UDC that stacks subpixels (the red, blue and green elements in each pixel) vertically rather than arranging them side by side, as is usually done in CRT and LCD displays.

Within a SOLED display, each sub-pixel element can be controlled independently. Pixel color can be adjusted by varying the currents through the three color elements and gray scale can be adjusted by pulse-width modulation. Brightness is controlled by manipulating current through the stack. According to UDC, their SOLED technology enables a three-fold improvement in resolution and better color quality over CRT and LCD displays. The company expects that SOLEDs may in the future enable high resolution Web-enabled devices.

UDC is working on several other OLED technologies, including flexible OLED ( FOLED ) and phosphorescent OLED ( PHOLED ) displays.

This was last updated in March 2011

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