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The present invention relates to improved LED light bulbs that address various limitations associated with known LED lightbulbs. In one aspect, the invention relates to light emitting diode (LED) light engine adapted for use in a LED light bulb, the LED light engine comprising at least one LED mounted to a Substrate having patterned thereon at least one electrical trace, the Substrate comprising at least one heat conduit por tion with which the at least one LED is arranged in conductive thermal communication, wherein the Substrate includes at least one bend therein to form a Substantially rigid upright support structure for the at least one LED. An associated aspect relates to a LED light bulb comprising the foregoing light engine.

In another aspect, the invention relates to a method com prising: patterning a Substantially planar Substrate to define at least one electrical trace for at least one light emitting diode (LED …