Abstract: A light-emitting diode device includes a substrate, an epitaxial layer and a first electrode. The epitaxial layer is disposed on the substrate. The first electrode is disposed on the epitaxial layer and includes a connecting portion and a conductive finger. The conductive finger has a first end and a second end, and the first end is connected to the connecting portion. At least one portion of the conductive finger is tapered along an extending direction of the conductive finger.

Abstract: An alternating current light-emitting diode (AC LED) device. In one embodiment, the AC LED device includes a primary light-emitting module and a secondary light-emitting module. Each of the primary light-emitting module and the secondary light-emitting module comprises a plurality of light-emitting diodes (LEDs). The secondary light-emitting module is disposed adjacent to the primary light-emitting module. A light-emitting area of each LED in the secondary light-emitting module is smaller than a light-emitting area of each LED in the primary light-emitting module.