Multi-die LED package
First Claim
Patent Images
1. A light-emitting device comprising:
- a submount having front and back sides and including a ceramic layer;
an array of light emitting diodes (LEDs) on the front side; and
an asymmetric lens overmolded on the submount and covering the LED array;
wherein;
the submount comprises at least three contact pads, including a positive contact pad, a negative contact pad, and at least one intermediate contact pad;
a first subset of the LEDs is secured with respect to one of the positive and negative contact pads; and
a second subset of the LEDs is secured with respect to one of the at least one intermediate contact pads, the first and second subsets being mutually-exclusive and having the same number of LEDs.
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Abstract
A light-emitting device comprising (a) a submount having front and back sides and including a ceramic layer; (b) an array of light-emitting diodes (LEDs) on the front side; and (c) a lens overmolded on the submount and covering the LED array. In some embodiments, the submount comprises at least two electrically-conductive contact pads on the front side, and each LED in the array is secured with respect to one of the contact pads.
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Citations
64 Claims
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1. A light-emitting device comprising:
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a submount having front and back sides and including a ceramic layer; an array of light emitting diodes (LEDs) on the front side; and an asymmetric lens overmolded on the submount and covering the LED array; wherein; the submount comprises at least three contact pads, including a positive contact pad, a negative contact pad, and at least one intermediate contact pad; a first subset of the LEDs is secured with respect to one of the positive and negative contact pads; and a second subset of the LEDs is secured with respect to one of the at least one intermediate contact pads, the first and second subsets being mutually-exclusive and having the same number of LEDs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A light-emitting device comprising:
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a submount having front and back sides, an electrically-insulating layer, at least three front-side electrically-conductive contact pads including a positive contact pad, a negative contact pad, and at least one intermediate contact pad; and an array of light emitting diodes (LEDs) on the front side, the array including a first subset of the LEDs secured with respect to one of the positive and negative contact pads, and a second subset of the LEDs secured with respect to one of the at least one intermediate contact pads, the first and second subsets being mutually-exclusive and having the same number of LEDs. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
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51. A light-emitting device comprising:
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a submount having an electrically-insulating layer, a front side, and at least three front-side electrically-conductive contact pads, including a positive contact pad, a negative contact pad, and at least one intermediate contact pad; and an array of light emitting diodes (LEDs) on the front side, the array defining an LED-populated area having an aspect ratio greater than 1, the array including first and second mutually-exclusive subsets of the LEDs, the LEDs of each of the subsets being electrically in parallel with each other and the subsets being electrically in series; wherein the LEDs of the first subset are on the positive contact pad and the LEDs of the second subset are on the intermediate contact pad.
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52. A light-emitting device comprising:
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a submount; and a rectangular light emitting diode (LED) array defining an LED-populated area having an aspect ratio greater than 1, the LED array including first and second subsets of the LEDs, the LEDs within each of the subsets being electrically in parallel with each other and the first and second subsets being electrically in series with each other. - View Dependent Claims (53, 54, 55, 56, 57, 58, 59, 60)
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- 61. A submount comprising first, second and third contact pads, the second contact pad substantially surrounding the first contact pad on at least three sides, and the third contact pad substantially surrounding the second contact pad on at least three sides.
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63. A light-emitting device comprising:
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a submount including first, second and third contact pads, the second contact pad substantially surrounding the first contact pad on at least three sides, and the third contact pad substantially surrounding the second contact pad on at least three sides; and a light emitting diode (LED) array on the contact pads. - View Dependent Claims (64)
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Specification