Illumination devices and methods of making same are disclosed. In one embodiment, a display device includes a light modulating array and a light guide configured to receive light into at least one edge of the light guide. The display device can also include a light turning layer disposed such that the...http://www.google.de/patents/US20100302218?utm_source=gb-gplus-sharePatent US20100302218 - ILLUMINATION DEVICES AND METHODS OF FABRICATION THEREOF