LASER OSCILLATOR
First Claim
1. A laser oscillator comprising:
- a light emitting element over a first layer; and
a second layer that is light-transmitting and that is formed to cover the light emitting element,wherein the light emitting element comprises;
a first electrode over the first layer;
a first organic electroluminescent layer over the first electrode;
a second organic electroluminescent layer over the first organic electroluminescent layer;
a charge generation layer between the first and second organic electroluminescent layers; and
a second electrode over the second organic electroluminescent layer,wherein light generated in the first and second electroluminescent layer is reflected at the first electrode and the second electrode.
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Abstract
The present invention provides a laser oscillator using an electroluminescent material that can enhance directivity of emitted laser light and resistance to a physical impact. The laser oscillator has a first layer including a concave portion, a second layer formed over the first layer to cover the concave portion, and a light emitting element formed over the second layer to overlap the concave portion, wherein the second layer is planarized, an axis of laser light obtained from the light emitting element intersects with a planarized surface of the second layer, the first layer has a curved surface in the concave portion, and a refractive index of the first layer is lower than that of the second layer.
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Citations
11 Claims
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1. A laser oscillator comprising:
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a light emitting element over a first layer; and a second layer that is light-transmitting and that is formed to cover the light emitting element, wherein the light emitting element comprises; a first electrode over the first layer; a first organic electroluminescent layer over the first electrode; a second organic electroluminescent layer over the first organic electroluminescent layer; a charge generation layer between the first and second organic electroluminescent layers; and a second electrode over the second organic electroluminescent layer, wherein light generated in the first and second electroluminescent layer is reflected at the first electrode and the second electrode. - View Dependent Claims (2, 3)
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4. A laser oscillator comprising:
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a light emitting element over a first layer; and a second layer that is light-transmitting and that is formed to cover the light emitting element, wherein the light emitting element comprises; a first electrode over the first layer; a first organic electroluminescent layer over the first electrode; a second organic electroluminescent layer over the first organic electroluminescent layer; a charge generation layer between the first and second organic electroluminescent layers; and a second electrode over the second organic electroluminescent layer, wherein the second layer has a curved convex portion which overlaps with the light emitting element, wherein light generated in the first and second electroluminescent layer is reflected at the first electrode and the second electrode. - View Dependent Claims (5, 6, 7)
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8. A laser oscillator comprising:
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a reflective film over a first layer; a light emitting element over the reflective film; and a second layer that is light-transmitting and that is formed to cover the light emitting element, wherein the light emitting element comprises; a first electrode over the first layer; a first organic electroluminescent layer over the first electrode; a second organic electroluminescent layer over the first organic electroluminescent layer; a charge generation layer between the first and second organic electroluminescent layers; and a second electrode over the second organic electroluminescent layer, wherein the second layer has a curved convex portion which overlaps with the light emitting element, wherein light generated in the first and second electroluminescent layer is reflected at the reflective film and the second electrode. - View Dependent Claims (9, 10, 11)
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Specification