Light-emitting dies incorporating wavelength-conversion materials and related methods
First Claim
Patent Images
1. An electronic device comprising:
- a solid shaped volume of a polymeric binder;
suspended within the polymeric binder, a semiconductor die having a first face, a second face opposite the first face, and at least one sidewall spanning the first and second faces, the semiconductor die being a bare-die light-emitting element comprising a plurality of active semiconductor layers that cooperatively emit light; and
disposed on the first face of the semiconductor die, at least two spaced-apart contacts each having a free terminal end (i) not covered by the polymeric binder and (ii) available for electrical connection, the contacts each contacting a different active semiconductor layer of the semiconductor die,wherein (i) at least a portion of the polymeric binder is transparent to a wavelength of light emitted by the light-emitting element, (ii) the polymeric binder contains therein a wavelength-conversion material for absorption of at least a portion of light emitted from the semiconductor die and emission of converted light having a different wavelength, converted light and unconverted light emitted by the light-emitting element combining to form mixed light, and (iii) at least a portion of the surface of the polymeric binder comprises a texture configured to enhance extraction of light from the polymeric binder, the texture having an average roughness in the range of about 0.5 μ
m to about 10 μ
m.
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0 Petitions
Accused Products
Abstract
In accordance with certain embodiments, semiconductor dies are embedded within polymeric binder to form, e.g., freestanding white light-emitting dies and/or composite wafers containing multiple light-emitting dies embedded in a single volume of binder.
121 Citations
20 Claims
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1. An electronic device comprising:
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a solid shaped volume of a polymeric binder; suspended within the polymeric binder, a semiconductor die having a first face, a second face opposite the first face, and at least one sidewall spanning the first and second faces, the semiconductor die being a bare-die light-emitting element comprising a plurality of active semiconductor layers that cooperatively emit light; and disposed on the first face of the semiconductor die, at least two spaced-apart contacts each having a free terminal end (i) not covered by the polymeric binder and (ii) available for electrical connection, the contacts each contacting a different active semiconductor layer of the semiconductor die, wherein (i) at least a portion of the polymeric binder is transparent to a wavelength of light emitted by the light-emitting element, (ii) the polymeric binder contains therein a wavelength-conversion material for absorption of at least a portion of light emitted from the semiconductor die and emission of converted light having a different wavelength, converted light and unconverted light emitted by the light-emitting element combining to form mixed light, and (iii) at least a portion of the surface of the polymeric binder comprises a texture configured to enhance extraction of light from the polymeric binder, the texture having an average roughness in the range of about 0.5 μ
m to about 10 μ
m. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification