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US 8,896,010 B2Granted
Wafer-level flip chip device packages and related methods
AssigneeCooledge Lighting Inc.
InventorMichael A. Tischler
Life of this patent
Estimating the term…
Abstract
In accordance with certain embodiments, semiconductor dies are at least partially coated with a polymer and a conductive adhesive prior being bonded to a substrate having electrical traces thereon.
Claims24
An electronic device comprising:
- a solid shaped volume of a polymeric binder;
- suspended within the 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;
- disposed on the first face of the semiconductor die, at least two spaced-apart contacts each having a terminal end not covered by the polymeric binder, the contacts each contacting a different active semiconductor layer of the semiconductor die;
- and
- disposed over a portion of the polymeric binder and in electrical contact with the terminal ends of the contacts, an anisotropic conductive adhesive (ACA),
- wherein (i) at least a portion of the polymeric binder is transparent to a wavelength of light emitted by the bare-die light-emitting element and (ii) the polymeric binder contains therein a wavelength-conversion material for absorption of at least a portion of light emitted from the bare-die light-emitting element and emission of converted light having a different wavelength, converted light and unconverted light emitted by the bare-die light-emitting element combining to form mixed light.
3 more elements
Dependencies are inferred from the claim text.