Apparatus for selectively backlighting a material
First Claim
1. A backlighting device for emitting light having a first wavelength, comprising:
- an electroluminescent lamp for emitting radiation having a second wavelength;
a layer of quantum dots emitting light having the first wavelength in response to the emitted radiation of the electroluminescent lamp, the first wavelength being larger than the second wavelength; and
a layer of scattering particles disposed over the layer of quantum dots that scatters the radiation and light having wavelength other that the first wavelength.
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0 Petitions
Accused Products
Abstract
A backlighting device (300, 400, 500, 600) emitting light having a first wavelength includes a first radiation emission device (302), e.g., an electroluminescent lamp, for emitting radiation having a second wavelength. A layer (306) of a plurality of photon emitting particles (308), e.g., free standing quantum dots or phosphorus particles, emits light having the first wavelength in response to the first radiation emission device (302), the first wavelength being larger than the second wavelength. A transparent material (116, 120, 122) overlies the layer of a plurality of photon emitting particles (308), wherein the light having a first wavelength passes through the transparent material (116, 120, 122). Optionally, a filter (402) may be placed over the layer (306) to block the radiation having a second wavelength, and a scattering layer (604) may be placed over the layer (306) to scatter wavelength other than the first wavelength.
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Citations
20 Claims
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1. A backlighting device for emitting light having a first wavelength, comprising:
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an electroluminescent lamp for emitting radiation having a second wavelength; a layer of quantum dots emitting light having the first wavelength in response to the emitted radiation of the electroluminescent lamp, the first wavelength being larger than the second wavelength; and a layer of scattering particles disposed over the layer of quantum dots that scatters the radiation and light having wavelength other that the first wavelength. - View Dependent Claims (2, 3)
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4. A backlighting device for emitting light having a first wavelength, comprising:
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an electroluminescent lamp for emitting radiation having a second wavelength; a layer of quantum dots emitting light having the first wavelength in response to the emitted radiation of the electroluminescent lamp, the first wavelength being larger than the second wavelength; and a radiation emission device disposed on a side of the electroluminescent lamp opposed to the layer of quantum dots for emitting light having the first wavelength. - View Dependent Claims (5, 6)
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7. A backlighting device for emitting light having a first wavelength, comprising:
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an electroluminescent lamp for emitting radiation having a second wavelength; a layer of quantum dots emitting light having the first wavelength in response to the emitted radiation of the electroluminescent lamp, the first wavelength being larger than the second wavelength; and further comprising a transparent material further comprising a transport material wherein the transparent material comprises one of a touch key, an icon, and at least a portion of a housing of an electronic device. - View Dependent Claims (8, 9, 10)
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11. A backlighting device emitting light having a first wavelength, comprising:
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an electroluminescent lamp for emitting radiation having a second wavelength; a layer of a plurality of free standing quantum dots emitting light having the first wavelength in response to being impacted by the radiation having a second wavelength, the first wavelength being larger than the second wavelength; and a layer including scattering particles disposed over the layer of free standing quantum dots that scatters the radiation having a second wavelength.
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12. A backlighting device emitting light having a first wavelength, comprising:
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a first electroluminescent lamp for emitting radiation having a second wavelength; a layer of a plurality of free standing quantum dots emitting light having the first wavelength in response to being impacted by the radiation having a second wavelength, the first wavelength being larger than the second wavelength; and
comprising a second electroluminescent lamp disposed contiguous to the first electroluminescent lamp, for emitting light having the first wavelength. - View Dependent Claims (13, 14)
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15. A backlighting device emitting light having a first wavelength, comprising:
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an electroluminescent lamp for emitting radiation having a second wavelength; and a layer of a plurality of free standing quantum dots emitting light having the first wavelength in response to being impacted by the radiation having a second wavelength, the first wavelength being larger than the second wavelength; further comprising a transparent material further comprising a transport material wherein the transparent material comprises one of a touch key, an icon, and at least a portion of a housing of an electronic device.
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16. A backlighting device emitting light having a first wavelength, comprising:
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an electroluminescent lamp for emitting radiation having a second wavelength; a layer of quantum dots and phosphorus particles emitting light having the first wavelength in response to the emitted radiation of the electroluminescent lamp, the first wavelength being larger than the second wavelength; and further comprising a transparent material further comprising a transport material wherein the transparent material comprises one of a touch key, an icon, and at least a portion of a housing of an electronic device. - View Dependent Claims (17, 18)
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19. A backlighting device emitting light having a first wavelength, comprising:
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an electroluminescent lamp for emitting radiation having a second wavelength; a layer of quantum dots and phosphorus particles emitting light having the first wavelength in response to the emitted radiation of the electroluminescent lamp, the first wavelength being larger than the second wavelength; and a layer including scattering particles disposed over the layer of quantum dots and phosphorus particles that scatters the radiation and light having wavelength other than the first wavelength.
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20. A backlighting device emitting light having a first wavelength, comprising:
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an electroluminescent lamp for emitting radiation having a second wavelength; and a layer of quantum dots and phosphorus particles emitting light having the first wavelength in response to the emitted radiation of the electroluminescent lamp, the first wavelength being larger than the second wavelength; and a radiation emission device disposed on a side of the electroluminescent lamp opposed to the layer of quantum dots and phosphorus particles, for emitting light having the first wavelength.
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Specification