| 摘要 |
A substrate (1) made of a transparent material, preferably glass, which substrate has a planar first side (1a) for the application of an electroluminescent layered structure (21, 22, 23) for emitting light and having a structured second side (1b) for the effective coupling-out of light (6), comprising at least one element of structure (2) comprising first regions (3) having first surfaces (3a) that have a surface roughness of between 0.2 mum and 100 mum, and preferably of between 0.4 mum and 70 mum, and as a particular preference of between 0.7 mum and 40 mum. |
