Light-emitting diode
First Claim
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1. A light-emitting diode comprising:
- a compound semiconductor substrate of a first conductivity type;
a lower cladding layer formed on said compound semiconductor substrate and essentially consisting of InGaAlP of said first conductivity type;
a light-emitting layer formed on said lower cladding layer and having a quantum well structure constituted by alternately stacking barrier layers and 10 to 19 quantum well layers; and
and upper cladding layer formed on said light-emitting layer and essentially consisting of InGaAlP of a second conductivity type,wherein light having emission wavelengths in the range of 590 to 620 nm is emitted from said light-emitting diode.
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Abstract
A light-emitting diode, in which light is emitted from a side opposite to a substrate, includes a compound semiconductor substrate of a first conductivity type, a lower cladding layer formed on the substrate end consisting of InGaAlP of the first conductivity type, a light-emitting layer formed on the lower cladding layer and having a quantum well structure constituted by alternately stacking barrier layers and eight or more quantum well layers, and an upper cladding layer formed on the light-emitting layer and consisting of InGaAlP of a second conductivity type.
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Citations
10 Claims
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1. A light-emitting diode comprising:
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a compound semiconductor substrate of a first conductivity type; a lower cladding layer formed on said compound semiconductor substrate and essentially consisting of InGaAlP of said first conductivity type; a light-emitting layer formed on said lower cladding layer and having a quantum well structure constituted by alternately stacking barrier layers and 10 to 19 quantum well layers; and and upper cladding layer formed on said light-emitting layer and essentially consisting of InGaAlP of a second conductivity type, wherein light having emission wavelengths in the range of 590 to 620 nm is emitted from said light-emitting diode. - View Dependent Claims (2, 3, 4, 5)
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6. A light-emitting diode comprising:
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a compound semiconductor substrate of a first conductivity type; a lower cladding layer formed on said compound semiconductor substrate and essentially consisting of InGaAlP of said first conductivity type; a light-emitting layer formed on said lower cladding layer and having a quantum well structure constituted by alternately stacking barrier layers and 20 to 80 quantum well layers; and and upper cladding layer formed on said light-emitting layer and essentially consisting of InGaAlP of a second conductivity type, wherein light having emission wavelengths in the range of 590 to 620 nm is emitted from said light-emitting diode. - View Dependent Claims (7, 8, 9, 10)
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Specification