Lumileds LLC

S Rao Peddada

Sridevi A Vakkalanka

Lex Alan Kosowsky

Christian Kleijnen

Georg Henninger

Udo Karbowski

Manuel Grave

Barbara Muelders

The invention describes a flexible lighting strip comprising a multitude of light-emitting diodes arranged in at least two groups. Each group comprises at least two light-emitting diodes arranged in an electrical series connection. The at least two groups are arranged in parallel to an anode track and a cathode track. The at least two groups are arranged in a longitudinal arrangement such that a last light-emitting diode of a first group is arranged next to a first light-emitting diode of a second group. The anode track and the cathode track each consist of a wire line having substantially circular wires that are bent to receive compressive and/or tensile stress. The electrical circuit provides a third wire line having a substantially circular wire as a center line arranged between the outer lines. At least one light-emitting diode of every group is mounted on an interposer which contracts all three wire lines.

Flexible light-emitting diode lighting strip with interposer

A light emitting device comprises a reflector cup coupled to a base that defines a cavity. The base comprises a plurality of metal pads exposed on a bottom surface of the cavity. The base further comprises a plurality of protrusions arranged around a perimeter of the base and disposed inside one or more side surfaces of the reflector cup. The light emitting device comprises an LED die disposed over the bottom surface of the cavity. The LED die is coupled to the metal pads with gold-tin solder. The LED die has a footprint that is at most 30% smaller than an area of a top opening of the cavity.

LED package using electroform stencil printing

A method for manufacturing light emitting devices, comprising: providing a package body including: (i) a reflector cup defining a cavity and (ii) a plurality of metal pads disposed at a bottom surface of the cavity; performing reservoir stencil printing to deposit a respective solder pattern on each of the metal pads, the reservoir stencil printing being performed using a 3D electroform stencil that is placed over the reflector cup, the 3D electroform stencil including a lip configured to engage one or more sidewalls of the reflector cup, and a reservoir extending away from the lip and into the cavity; placing an LED die on the solder patterns that are formed on the metal pads and performing reflow soldering to attach the LED die to the metal pads.

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San Jose, CA, United States of America

S Rao Peddada