This invention relates to a LED element includes a base plate, a first radiation unit, a second radiation unit, a first electrode couple and a second electrode couple, in which, the first radiation unit is set on the base plate, the second unit is set on the first radiation unit, the first electrode couple is set on the first radiation unit and connected to it electrically, the second electrode couple is set on the second unit and connected to it electrically. Said LED element is suitable for being driven by AC drive signals to drive the two radiation units to illuminate alternately to further get white light of suitable color temperature. |