Back-emitting OLED device and method for homogenizing the luminance of a back-emitting OLED device

摘要

An OLED device includes a transparent anode, of sheet resistance R1, and a cathode, of sheet resistance R2, the ratio r=R2/R1 ranging from 0.01 to 2.5, a first anode electrical contact, a first cathode electrical contact, arranged above the active zone, and a reflector covering the active zone above an OLED system, and for each point B of the anode contact, the point B being in an edge of the first anodic region, on defining a distance D between B and the point C closest to the point B, and on defining a distance L between the point B and a point X of an opposite edge of the first anodic region from the first edge, and passing through Ci the following criteria are defined:if 0.01≦r0.1, then 30%D/L48%, if 0.1≦r0.5, then 10%D/L45%,if 0.5≦r1, then 10%D/L45%, if 1≦r1.5, then 5%D/L35%,if 1.5≦r2.5, then 5%D/L30%.