Light emitting panel assemblies include a light emitting panel member having a uniform or variable pattern of light extracting deformities of well defined shapes in or on one or more surface areas of the light emitting panel member. The size and shape as well as the depth and angular orientation and...http://www.google.se/patents/US20040012946?utm_source=gb-gplus-sharePatent US20040012946 - Light emitting panel assemblies
