LED lamps
DC CAFCFirst Claim
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1. An LED lamp comprising:
- a semiconductor structure comprising a lower semiconductor layer having a lower face, an active region, an upper semiconductor layer having an upper face, a left edge, and a right edge;
a first terminal between the left edge and the right edge;
a second terminal distant from the first terminal;
a left track formed on a lower bottom surface lower than the upper face; and
a right track beginning at a position near the right edge and extending toward the left edge.
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Abstract
A high power LED lamp has a GaN chip placed over an AlGaInP chip. A reflector is placed between the two chips. Each of the chips has trenches diverting light for output. The chip pair can be arranged to produce white light having a spectral distribution in the red to blue region that is close to that of daylight. Also, the chip pair can be used to provide an RGB lamp or a red-amber-green traffic lamp. The active regions of both chips can be less than 50 microns away from a heat sink.
49 Citations
20 Claims
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1. An LED lamp comprising:
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a semiconductor structure comprising a lower semiconductor layer having a lower face, an active region, an upper semiconductor layer having an upper face, a left edge, and a right edge; a first terminal between the left edge and the right edge; a second terminal distant from the first terminal; a left track formed on a lower bottom surface lower than the upper face; and a right track beginning at a position near the right edge and extending toward the left edge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An LED lamp comprising:
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a semiconductor structure comprising a lower semiconductor layer having a lower face, an active region, an upper semiconductor layer having an upper face through which at least some light from the active region can escape from the semiconductor structure, a first edge, and a second edge opposite to the first edge; a first conductor and a second conductor, formed on the upper face; a track formed on a lower bottom surface lower than the upper face, and between the first conductor and the second conductor; a first terminal electrically connected to the track; and a second terminal distant from the first terminal and having a width greater than the first conductor. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. An LED lamp comprising:
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a semiconductor structure comprising a first semiconductor layer having a lower face, an active region, and a second semiconductor layer having an upper face; a first terminal electrically connected to the first semiconductor layer and having a first width; a second terminal electrically connected to the second semiconductor layer and having a second width; at least two tracks associated with the first terminal, or at least two conductors associated with the second terminal, having at least one width smaller than one of the first width and the second width. - View Dependent Claims (17, 18, 19, 20)
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Specification