Light emitting device and manufacturing method thereof and display used this light emitting device
View Patent ↗A light emitting device and a manufacturing method thereof and a display used the light emitting device, in which fine patterning for the light emitting device is realized by a simple process and the light leakage is prevented and the efficiency at extracting light is increased, are provided. The light emitting device provides an organic electroluminescent (EL) device in which electrodes and a luminescent layer are formed, a diffraction grating or a zone plate, and a filter. Light emitted from the luminescent layer transmits through the diffraction grating or the zone plate, which is formed with a designated grating pitch, or is reflected at the diffraction grating or the zone plate. With this, the transmitting or reflecting light is controlled to be in a designated angle region. And when the light is transmitted through the filter, light having different color tone and chromaticity from those of the light emitted from the luminescent layer is extracted.
1. A manufacturing method of a light emitting device, comprising:
forming an organic EL device;
forming one of a diffraction grating and a zone plate; and
forming a filter,
wherein the organic EL device, one of the diffraction grating and the zone plate, and the filter are formed independently and are adhered to each other.