WHITE LIGHT LED
First Claim
1. A light emitting diode, comprising:
- a dual-wavelength chip for generating a first wavelength light and a second wavelength light; and
an optical thin film, disposed above the dual-wavelength chip, for receiving at least one of the first wavelength light and the second wavelength light so as to generate a third wavelength light to mix with the first wavelength light, the second wavelength light, and the third wavelength light to produce a monochromatic light.
1 Assignment
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Accused Products
Abstract
A white light LED is disclosed. The white light LED includes a dual-wavelength chip and an optical thin film. The dual-wavelength chip generates a first wavelength light and a second wavelength light. The optical thin film is disposed above the dual-wavelength chip. The optical thin film can partially be a quantum well thin film. Therefore, the quantum well thin film can be excited by the first wavelength light and/or second wavelength light to generate a third wavelength light. The optical thin film further comprises a plurality of windows to let the first and second wavelength lights pass through. By predetermining a ratio of the quantum well thin film area and the window area that belong to the optical thin film, a lumen ratio of the first, the second, and the third wavelength lights can be adjusted to realize white lights of different color temperatures.
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Citations
18 Claims
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1. A light emitting diode, comprising:
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a dual-wavelength chip for generating a first wavelength light and a second wavelength light; and an optical thin film, disposed above the dual-wavelength chip, for receiving at least one of the first wavelength light and the second wavelength light so as to generate a third wavelength light to mix with the first wavelength light, the second wavelength light, and the third wavelength light to produce a monochromatic light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of manufacturing a light emitting diode, comprising:
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providing a dual-wavelength chip for generating a first wavelength light and a second wavelength light; and disposing an optical thin film above the dual-wavelength chip for receiving at least one of the first wavelength light and the second wavelength light so as to generate a third wavelength light, wherein the first wavelength light, the second wavelength light, and the third wavelength light are mixed to produce a monochromatic light. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification