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LEADFRAME PACKAGE WITH RECESSED CAVITY FOR LED

  • US 20120104421A1
  • Filed: 05/24/2011
  • Published: 05/03/2012
  • Est. Priority Date: 11/02/2010
  • Status: Active Grant
First Claim
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1. A light emitting diode (LED) package comprising:

  • a metal die pad having a bottom planar surface, an upper surface, and a centrally located recessed cavity, the recessed cavity having a planar chip attach surface between the bottom planar surface and the upper surface, the recessed cavity also having sidewalls that extend from the recessed planar chip attach surface to the upper surface;

    first and second metal leads arranged on opposing sides of the die pad, the first and second metal leads having a bottom planar surface that is coextensive with the bottom planar surface of the die pad and an upper planar surface that is coextensive with the upper surface of the die pad;

    an LED chip attached to the chip attach surface within the recessed cavity, the LED chip having first and second bonding pads located on an upper surface thereof;

    first and second conductors that electrically connect the first and second bonding pads to the first and second metal leads, respectively; and

    a package body comprising an encapsulant, wherein the encapsulant fills space between the metal die pad and first and second metal leads forms a bottom encapsulant surface that is coextensive with the bottom planar surfaces of the die pad and the bottom planar surface of the first and second metal leads.

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