FLEXIBLE HERMETIC THIN FILM WITH LIGHT EXTRACTION LAYER

摘要

A protected organic light emitting diode (200) includes an organic light emitting diode structure formed on a substrate (10), a hermetic barrier layer (8) formed over at least part of the organic light emitting diode structure, and a light extraction layer (12). The barrier layer (8) may include a glass material such as a tin fluorophosphate glass, a tungsten-doped tin fluorophosphate glass, a chalcogenide glass, a tellurite glass, a borate glass or a phosphate glass. The light extraction layer (12), which may be formed over the barrier layer (8), includes a high refractive index matrix material (16) and at least one of scattering particles (14) dispersed throughout the matrix material (16) and a roughened surface.