Active matrix electroluminescent display devices, and their manufacture

摘要

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 material ( 240 ) that serves as an interconnection between a first circuit element ( 21, 4, 5, 6, 140, 150, 160 , T 1 , T 2 , Tm, Tg, Ch) of the circuit substrate and a second circuit element ( 400, 400 s , 23 ), for example, a sensor ( 400 s) of a sensor array supported over the pixel array. The conductive barrier material ( 240 ) is insulated ( 40 ) at the sides of the barriers adjacent to the LEDs and has an un-insulated top connection area ( 240 t) at which the second circuit element is connected to the conductive barrier material ( 240 ).