TILED ELECTROLUMINESCENT DEVICE WITH FILLED GAPS

摘要

A tiled electroluminescent device that improves light-emission uniformity and reduces reflection from ambient light includes a first and a second electroluminescent device tile, a portion of the edge of the first device tile abutted with a portion of the edge of the second device tile leaving a gap between the first and second device tile edges, each device tile including a substrate, having an optical index and a level of transparency, and an electroluminescent diode for emitting light according to a distribution that is substantially Lambertian, whereby light is directed along an oblique angle to the surface of the substrate of the first tile and through the edge of the first device tile; and a filler located in the gap between the abutting edges of the first and second device tiles, the filler having an optical index and a level of transparency matched to the substrates.