Physical barriers (210) are present between neighbouring pixels (200) on a circuit substrate (100) of an active-matrix electroluminescent display device, particularly with LEDs (25) of organic semiconductor materials. The invention forms these barriers (210) with metal or other electrically-conductive...http://www.google.de/patents/US7817121?utm_source=gb-gplus-sharePatent US7817121 - Active matrix electroluminescent display devices, and their manufacture
