ILLUMINATION DEVICE HAVING ONE OR MORE LUMIPHORS, AND METHODS OF FABRICATING SAME
First Claim
1. A light emitter, comprising:
- a monolithic die comprising at least one solid state light emitting device; and
at least a first lumiphor on the die, the first lumiphor covering less than all of a light emission region of the monolithic die such that a first portion of light emitted by the at least one solid state light emitting device is directed into the first lumiphor and a second portion of light emitted by the at least one solid state light emitting device is not directed into the first lumiphor.
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Accused Products
Abstract
A light emitter comprising a monolithic die comprising at least one solid state light emitting device and at least a first lumiphor covering part of a light emission region of the die. In some embodiments, at least a second lumiphor is provided on the die. The first lumiphor can be part of a first pattern of lumiphors, and/or the second lumiphor can be part of a second pattern of lumiphors. The first and second lumiphors can differ in luminescent material, size, shape and/or concentration of luminescent material. The lumiphors can overlap completely, partially, or not at all. Some embodiments comprise an electrical interconnection to electrically connect respective solid state light emitting devices. Also, a light emitter comprising unit cells each comprising a group of light emitting devices and at least one lumiphor. Methods of fabricating light emitters comprise selectively applying at least one lumiphor to a monolithic die.
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Citations
48 Claims
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1. A light emitter, comprising:
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a monolithic die comprising at least one solid state light emitting device; and at least a first lumiphor on the die, the first lumiphor covering less than all of a light emission region of the monolithic die such that a first portion of light emitted by the at least one solid state light emitting device is directed into the first lumiphor and a second portion of light emitted by the at least one solid state light emitting device is not directed into the first lumiphor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A light emitter comprising:
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a monolithic die comprising a plurality of solid state light emitting devices on a common substrate; a first lumiphor on a first group of the plurality of solid state light emitting devices, the first group being less than all of the plurality of solid state light emitting devices; and an electrical interconnection to electrically connect respective ones of the plurality of solid state light emitting devices. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A light emitter, comprising:
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a monolithic die comprising a plurality of solid state light emitting devices on a common substrate; an electrical interconnection to electrically connect respective ones of the plurality of solid state light emitting devices; and a plurality of unit cells, each unit cell comprising a group of the plurality of solid state light emitting devices, each of the unit cells comprising a first lumiphor on less than all of the group of solid state light emitting devices in the unit cell. - View Dependent Claims (29, 30, 31, 32, 33, 34)
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35. A method of fabricating a light emitter, comprising:
selectively applying at least one lumiphor to a monolithic die comprising a plurality of solid state light emitting devices, so as to cover only a portion of the die. - View Dependent Claims (36, 37, 38)
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39. A method of fabricating a light emitter, comprising:
selectively applying at least one lumiphor on selected ones of a plurality of solid state light emitting devices on a common substrate, the selected ones comprising less than all of the plurality of solid state light emitting devices. - View Dependent Claims (40, 41, 42, 43)
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44. A light emitter, comprising:
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a monolithic die comprising at least one solid state light emitting device; at least a first lumiphor on the die; and at least a second lumiphor on the die, wherein; a first portion of light emitted by the at least one solid state light emitting device passes through both the first lumiphor and the second lumiphor, and a second portion of light emitted by the at least one solid state light emitting device passes through the first lumiphor and does not pass through the second lumiphor. - View Dependent Claims (45, 46)
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47. A method of fabricating a light emitter, comprising:
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selectively applying at least a first lumiphor on a monolithic die comprising at least one solid state light emitting device, the first lumiphor covering less than all of a light emission region of the monolithic die, to form an initial emitter; measuring a light output from the initial emitter; and selectively applying at least a second lumiphor on the monolithic die to form the light emitter. - View Dependent Claims (48)
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Specification