MULTI-CHIP LIGHT EMITTING DEVICE LAMPS FOR PROVIDING HIGH-CRI WARM WHITE LIGHT AND LIGHT FIXTURES INCLUDING THE SAME
First Claim
1. A multi-chip light emitting device (LED) lamp for providing white light, comprising:
- a submount including first and second die mounting regions thereon;
a first LED chip mounted on the first die mounting region; and
a second LED chip mounted on the second die mounting region, wherein the LED lamp is configured to emit light having a spectral distribution including at least four different color peaks to provide the white light.
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Accused Products
Abstract
A multi-chip lighting emitting device (LED) lamp for providing white light includes a submount including first and second die mounting regions thereon. A first LED chip is mounted on the first die mounting region, and a second LED chip is mounted on the second die mounting region. The LED lamp is configured to emit light having a spectral distribution including at least four different color peaks to provide the white light. For example, a first conversion material may at least partially cover the first LED chip, and may be configured to absorb at least some of the light of the first color and re-emit light of a third color. In addition, a second conversion material may at least partially cover the first and/or second LED chips, and may be configured to absorb at least some of the light of the first and/or second colors and re-emit light of a fourth color. Related light fixtures and methods are also discussed.
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Citations
65 Claims
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1. A multi-chip light emitting device (LED) lamp for providing white light, comprising:
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a submount including first and second die mounting regions thereon;
a first LED chip mounted on the first die mounting region; and
a second LED chip mounted on the second die mounting region, wherein the LED lamp is configured to emit light having a spectral distribution including at least four different color peaks to provide the white light. - 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 (LED) light fixture for providing white light, comprising:
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a mounting plate; and
a plurality of multi-chip LED lamps attached to the mounting plate, wherein each of the plurality of multi-chip LED lamps comprises;
a submount including first and second die mounting regions thereon;
a first LED chip mounted on the first die mounting region; and
a second LED chip mounted on the second die mounting region, wherein at least one of the plurality of multi-chip LED lamps is configured to emit light having a spectral distribution including at least four different color peaks to provide the white light. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
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50. A multi-chip light emitting device (LED) lamp for providing white light, comprising:
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a submount including first, and second die mounting regions thereon;
a blue LED chip mounted on the first die mounting region and configured to emit light within a blue wavelength range responsive to a first bias current; and
a cyan LED chip mounted on the second die mounting region and configured to emit light within a cyan wavelength range responsive to a second bias current; and
a phosphor material at least partially covering the blue LED chip and configured to convert at least some of the light within the blue wavelength range to light within a yellow wavelength range. - View Dependent Claims (51, 52, 53, 54, 55, 56, 57, 58, 59)
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60. A method of operating a multi-element light emitting device (LED) lamp comprising blue, cyan, and red LED chips, the method comprising:
independently applying first, second, and third drive currents to the blue, cyan, and red LED chips at a ratio such that a combination of the light emitted from the blue, cyan, and red LED chips provides white light having a color temperature of about 2600 K to about 6000 K and/or a color-rendering index (CRI) of about 95.
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61. A light emitting device (LED) lamp for providing white light, comprising:
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a submount including a die mounting region thereon;
an LED chip mounted on the die mounting region and configured to emit light of a first color; and
a semiconductor layer on the LED chip and configured to absorb at least some of the light of the first color and re-emit light of another color. - View Dependent Claims (62, 63, 64, 65)
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Specification