Light emitting device

Details Light emitting device Light emitting device

2008-07-22

2008-07-22

Patel, Ashok (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S504000, C313S509000

Reexamination Certificate

active

07402948

ABSTRACT:
Not all of light generated in the light emitting layer comprising the organic material are taken out in the desirable direction. For example, light emitted in the lateral direction (the direction parallel to the substrate face) is not taken out and therefore is a loss. An object of the present invention is to provide a light emitting device structured so as to increase the amount of light which is taken out in a certain direction after emitted from a light emitting element, as well as a method of manufacturing this light emitting device.In the present invention, an upper end portion of an insulating material19that covers an end portion of a first electrode18is formed to have a curved surface having a radius of curvature, a second electrode23ais formed to have a slant face as going from its center portion toward its end portion along the curved surface. Light emitted from a light emitting layer comprising an organic material20that is formed on the second electrode23ais reflected at the slant face of the second electrode23ato increase the total amount of light taken out in the direction indicated by the arrow inFIG. 1A.

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