LIGHT EMITTING DEVICE AND DISPLAY
First Claim
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1. A light emitting device comprising:
- an LED chip having a quantum well structure and a light emitting layer made of a gallium nitride compound semiconductor, said LED chip emitting a light having a peak wavelength in a range from 420 nm to 490 nm;
a first transparent material covering said LED chip;
a second transparent material for protecting said LED chip and said first transparent material; and
a phosphor for absorbing a part of the light from said LED chip and emitting a light having a wavelength different from the light from said LED chip;
wherein said phosphor is included in second transparent material, and the light from said LED chip and the light from said phosphor are mixed to make a white light.
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Abstract
A light emitting device comprises: an LED chip having a quantum well structure and a light emitting layer made of a gallium nitride compound semiconductor; a first transparent material covering the LED chip; a second transparent material for protecting the LED chip and the first transparent material; and a phosphor for absorbing a part of the light from the LED chip and emitting a light having a wavelength different from the light from the LED chip; wherein the phosphor is included in second transparent material, and the light from the LED chip and the light from said phosphor are mixed to make a white light.
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Citations
12 Claims
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1. A light emitting device comprising:
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an LED chip having a quantum well structure and a light emitting layer made of a gallium nitride compound semiconductor, said LED chip emitting a light having a peak wavelength in a range from 420 nm to 490 nm; a first transparent material covering said LED chip; a second transparent material for protecting said LED chip and said first transparent material; and a phosphor for absorbing a part of the light from said LED chip and emitting a light having a wavelength different from the light from said LED chip; wherein said phosphor is included in second transparent material, and the light from said LED chip and the light from said phosphor are mixed to make a white light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification