CRYSTALLINE COLOR-CONVERSION DEVICE
First Claim
1. A crystalline color-conversion device, comprising:
- an electrically driven first light emitter for emitting first light having a first energy in response to an electrical signal; and
an inorganic solid single-crystal direct-bandgap second light emitter having a bandgap of a second energy less than the first energy,wherein the second light emitter is electrically isolated from the first light emitter, is located in optical association with the first light emitter, and is located within 0 to 250 microns of the first light emitter so that in response to the electrical signal the first light emitter emits first light that is absorbed by the second light emitter and the second light emitter emits second light having a lower energy than the first energy.
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Accused Products
Abstract
According to an embodiment, a crystalline color-conversion device includes an electrically driven first light emitter, for example a blue or ultraviolet LED, for emitting light having a first energy in response to an electrical signal. An inorganic solid single-crystal direct-bandgap second light emitter having a bandgap of a second energy less than the first energy is provided in association with the first light emitter. The second light emitter is electrically isolated from, located in optical association with, and physically connected to the first light emitter so that in response to the electrical signal the first light emitter emits first light that is absorbed by the second light emitter and the second light emitter emits second light having a lower energy than the first energy.
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Citations
51 Claims
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1. A crystalline color-conversion device, comprising:
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an electrically driven first light emitter for emitting first light having a first energy in response to an electrical signal; and an inorganic solid single-crystal direct-bandgap second light emitter having a bandgap of a second energy less than the first energy, wherein the second light emitter is electrically isolated from the first light emitter, is located in optical association with the first light emitter, and is located within 0 to 250 microns of the first light emitter so that in response to the electrical signal the first light emitter emits first light that is absorbed by the second light emitter and the second light emitter emits second light having a lower energy than the first energy. - View Dependent Claims (6, 7, 8, 17, 18, 21, 22, 23, 24, 27, 28, 29, 30, 42, 46, 47)
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2-5. -5. (canceled)
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9-14. -14. (canceled)
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19-20. -20. (canceled)
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25-26. -26. (canceled)
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31-41. -41. (canceled)
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44-45. -45. (canceled)
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48-49. -49. (canceled)
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50. A method of making a crystalline color-conversion device, comprising:
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providing an electrically driven first light emitter for emitting first light having a first energy in response to an electrical signal; providing an inorganic solid single-crystal direct-bandgap second light emitter having a bandgap of a second energy less than the first energy; and micro transfer printing the second light emitter onto the first light emitter or micro transfer printing the first light emitter onto the second light emitter, wherein the second light emitter is electrically isolated from the first light emitter, is located in optical association with the first light emitter, and is located within 0 to 250 microns of the first light emitter so that in response to the electrical signal the first light emitter emits first light that is absorbed by the second light emitter and the second light emitter emits second light having a lower energy than the first energy.
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51-57. -57. (canceled)
Specification