Patent ID: 7855396

Claim:
A light emitting diode (LED) package structure, comprising: a first substrate, having a first surface and a corresponding second surface; at least one LED chip, suitable for emitting a light and arranged on the first surface of the first substrate and electrically connected to the first substrate; a second substrate, located below the first substrate and having a third surface and a corresponding fourth surface, wherein the third surface faces the second surface; and a thermoelectric cooling device, arranged between the second surface of the first substrate and the third surface of the second substrate for conducting heat generated by the LED chip during operation, wherein the thermoelectric cooling device comprises: a first patterned electrode layer, comprising a plurality of first electrodes arranged on the second surface of the first substrate; a second patterned electrode layer, comprising a plurality of second electrodes arranged on the third surface of the second substrate; a plurality of N-type semiconductor materials; and a plurality of P-type semiconductor materials, wherein the N-type semiconductor materials and the P-type semiconductor materials are alternatively arranged between the first electrodes and the second electrodes, and are electrically connected to the first electrodes and the second electrodes so as to form a current loop, one end of each N-type semiconductor material and one end of each P-type semiconductor material are embedded in the second substrate.