Directional light output devices such as multi-view displays

摘要

A light emitting device comprises a substrate (61) and an arrangement of light emitting elements (62) provided over the substrate. The substrate has a contoured surface which defines at least first and second regions (60a, 60b, 60c), having normal directions which face in different directions. The light emitting elements (62) comprise directional light emitting elements, and are provided on the first and second regions (60b, 60c), thereby to define first and second light emission directions. This arrangement provides light source elements on a structured (topographically non-flat) substrate in a device, such that the angular distribution of light emitted by the device can be electronically adapted by controlling the light emission per light-emitting area.

主权项

1. A light emitting device, comprising:
a substrate; and an arrangement of light emitting elements provided over the substrate, wherein the substrate has a contoured surface which defines at least first and second regions, having normal directions which face in different directions, wherein the light emitting elements comprise directional light emitting elements, and wherein the light emitting elements are provided on the first and second regions to define first and second light emission directions; wherein each of the directional light emitting elements includes a first electrode and a second transparent electrode spaced apart from each other by a distance, the distance defining an optical resonant cavity for providing directional output, with light being generated in the optical resonant cavity and the light leaving the optical resonant cavity through the second transparent electrode.