LIGHT EMITTING DEVICE AND DISPLAY
First Claim
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1. A liquid crystal display comprising:
- a back light having a light emitting diode;
a liquid crystal injected between glass substrates; and
a color filter,wherein said light emitting diode comprising;
an LED chip,a transparent material covering said LED chip, anda phosphor contained in said transparent material and absorbing a part of light emitted by said LED chip and emitting light of wavelength different from that of the absorbed light,wherein said LED chip emits light having a spectrum with a peak in the range from 420 to 490 nm, said phosphor emits light having a spectrum with a peak in the range from 510 to 600 nm and a tail continuing beyond 700 nm, and said spectrum of the light emitted from said phosphor and said spectrum of the light emitted from said LED chip overlap with each other to make a continuous combined spectrum.
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Abstract
A light emitting device containing a semiconductor light emitting component and a phosphor, the phosphor is capable of absorbing a part of light emitted by the light emitting component and emitting light of a wavelength different from that of the absorbed light, is provided. A straight line connecting a point of chromaticity corresponding to a spectrum generated by the light emitting component and a point of chromaticity corresponding to a spectrum generated by the phosphor is substantially along a black body radiation locus in a chromaticity diagram.
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Citations
18 Claims
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1. A liquid crystal display comprising:
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a back light having a light emitting diode; a liquid crystal injected between glass substrates; and a color filter, wherein said light emitting diode comprising; an LED chip, a transparent material covering said LED chip, and a phosphor contained in said transparent material and absorbing a part of light emitted by said LED chip and emitting light of wavelength different from that of the absorbed light, wherein said LED chip emits light having a spectrum with a peak in the range from 420 to 490 nm, said phosphor emits light having a spectrum with a peak in the range from 510 to 600 nm and a tail continuing beyond 700 nm, and said spectrum of the light emitted from said phosphor and said spectrum of the light emitted from said LED chip overlap with each other to make a continuous combined spectrum. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A back light comprising a light emitting diode, said light emitting diode comprising:
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an LED chip, a transparent material covering said LED chip, and a phosphor contained in said transparent material and absorbing a part of light emitted by said LED chip and emitting light of wavelength different from that of the absorbed light, wherein said LED chip emits light having a spectrum with a peak in the range from 420 to 490 nm, said phosphor emits light having a spectrum with a peak in the range from 510 to 600 m and a tail continuing beyond 700 nm, and said spectrum of the light emitted from said phosphor and said spectrum of the light emitted from said LED chip overlap with each other to make a continuous combined spectrum. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification