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US 6,587,620 B2Granted
Surface emitting device
AssigneeSeiko Epson Corporation
InventorsTomoko Koyama, Takeo Kaneko
Life of this patent
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Abstract
A surface-emitting device has a substrate and a light-emitting device section formed on the substrate, and emits light in a direction intersecting the substrate. The light-emitting device section includes a light-emitting layer, an anode and cathode for applying an electrical field to the light-emitting layer, and a grating.
Claims23
A surface-emitting device comprising a substrate and a light-emitting device section formed on the substrate, and emitting light in a direction intersecting the substrate,
- wherein the light-emitting device section includes:
- a light-emitting layer capable of emitting light by electroluminescence;
- a pair of electrode layers for applying an electrical field to the light-emitting layer;
- and
- a grating of at least second order.
2 more elements
Dependencies are inferred from the claim text.