Light-emitting diode die packages and illumination apparatuses using same
AssigneeEvergrand Holdings Limited
InventorYU-NUNG SHEN
Life of this patent
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Abstract
The present invention relates to an LED die package, which has a light-emitting diode die having a sapphire layer, a first doped layer doped with a p- or n-type dopant, and a second doped layer doped with a different dopant from that doped in the first doped layer. A surface of the sapphire layer opposite to the surface on which the first doped layer is disposed is formed with generally inverted-pyramidal-shaped recesses and overlaid with a phosphor powder layer. Each of the first and the second doped layers has an electrode-forming surface formed with an electrode, on which an insulation layer is disposed and formed with exposure holes for exposing the electrodes. The exposure holes are each filled with an electrically conductive linker.
Claims6
A light-emitting diode die package, comprising:
- at least two light-emitting diode dies, each having a sapphire layer, a first doped layer disposed on the sapphire layer and doped with a p- or n-type dopant, and a second doped layer disposed on the first doped layer and doped with a different dopant from that doped in the first doped layer, wherein each of the first doped layers and the second doped layers has an electrode-forming surface formed with an electrode, and wherein a gap is provided between the first doped layers of two light-emitting diode dies, so that a continuous metal layer present between the first doped layers of neighboring LED dies is divided;
- a first insulation layer disposed on the electrode-forming surfaces of the first doped layers and the second doped layers, the first insulation layer being formed with a plurality of exposure holes for exposing the corresponding electrodes of the first doped layers and the second doped layers;
- a second insulation layer disposed on the first insulation layer, the second insulation layer being formed with a plurality of communication holes and a plurality of through holes, wherein each of the communication holes is adapted for communicating two exposure holes with each other, with the two exposure holes exposing two electrodes that have opposite polarity and reside in neighboring light-emitting diode dies, and wherein each of the through holes is registered with an exposure hole for exposing an electrode that need not be electrically connected to any electrode located in neighboring light-emitting diode dies;
- conductors formed within the exposure holes, the communication holes and the through holes, so that the light-emitting diode dies are electrically connected in series;
- a cover layer disposed on the second insulation layer and formed with a plurality of open holes, each being registered with a through hole;
- and
- a plurality of electrically conductive linkers formed within the open holes and adapted for electrically connecting the conductors located within the through holes to an external circuit.
Dependencies are inferred from the claim text.