YELLOW LIGHT EMITTING DIODE AND LIGHT EMITTING DEVICE HAVING THE SAME
First Claim
Patent Images
1. A yellow light emitting diode (LED), comprising:
- a substrate;
a LED die arranged on the substrate for emitting light along a light path, the LED die comprising an indium gallium aluminum nitride represented by the formula InxGayAlzN, wherein x+y+z=1, 0≦
x≦
1, 0≦
y≦
1, an 0≦
z≦
1;
a phosphor layer arranged on the light path of the LED die, the phosphor layer being a yttrium aluminum garnet phosphor layer and having a thickness of more than 250 micron; and
an encapsulant covering the LED die and the phosphor layer.
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Abstract
An exemplary yellow light emitting diode (LED) includes a substrate, a LED die, a phosphor layer and an encapsulant. The LED die is arranged on the substrate and comprises an indium gallium aluminum nitride represented by the formula InxGayAlzN, wherein x+y+z=1, 0≦x≦1, 0≦y≦1 and 0≦z≦1. The phosphor layer is a yttrium aluminum garnet phosphor layer configured on the light path of the LED die. The phosphor layer has a thickness of more than 250 micron. The encapsulant covers the LED die and the phosphor layer.
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Citations
20 Claims
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1. A yellow light emitting diode (LED), comprising:
-
a substrate; a LED die arranged on the substrate for emitting light along a light path, the LED die comprising an indium gallium aluminum nitride represented by the formula InxGayAlzN, wherein x+y+z=1, 0≦
x≦
1, 0≦
y≦
1, an 0≦
z≦
1;a phosphor layer arranged on the light path of the LED die, the phosphor layer being a yttrium aluminum garnet phosphor layer and having a thickness of more than 250 micron; and an encapsulant covering the LED die and the phosphor layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A light emitting device, comprising:
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a plurality of yellow LEDs each having a substrate, a LED die for emitting light along a light path, a phosphor layer and an encapsulant, the LED die being arranged on the substrate, the LED die comprising an indium gallium aluminum nitride represented by the formula InxGayAlzN wherein x+y+z=1, 0≦
x≦
1, 0≦
y≦
1, and 0≦
z≦
1, the phosphor layer being a yttrium aluminum garnet phosphor layer arranged on the light path of the LED die and having a thickness of more than 250 micron, the encapsulant covering the LED die and the phosphor layer; anda plurality of blue LEDs; wherein the yellow LEDs and the blue LEDs are in an amount ratio of 3;
2. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A light emitting device, comprising:
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a plurality of yellow LEDs each having a substrate, a LED die for emitting light along a light path, a phosphor layer and an encapsulant, the LED die being arranged on the substrate, the LED die comprising an indium gallium aluminum nitride represented by the formula InxGayAlzN, wherein x+y+z=1, 0≦
x≦
1, 0≦
y≦
1, and 023 z≦
1, the phosphor layer being a yttrium aluminum garnet phosphor layer arranged on the light path of the LED die and having a thickness of more than 250 micron, the encapsulant covering the LED die and the phosphor layer;a plurality of blue LEDs; and at least one red LED; wherein the yellow LEDs, the blue LEDs and the at least one red LED are in an amount ratio of 2;
2;
1. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification