AC light emitting diode and method for fabricating the same
View Patent ↗The present invention relates to an AC light emitting diode. An object of the present invention is to provide an AC light emitting diode wherein various designs for enhancement of the intensity of light, prevention of flickering of light or the like become possible, while coming out of a unified method of always using only one metal wire with respect to one electrode when electrodes of adjacent light emitting cells are connected through metal wires. To this end, the present invention provides an AC light emitting diode comprising a substrate; bonding pads positioned on the substrate; a plurality of light emitting cells arranged in a matrix form on the substrate; and a wiring means electrically connecting the bonding pads and the plurality of light emitting cells, wherein the wiring means includes a plurality of metal wires connecting an electrode of one of the light emitting cells with electrodes of other electrodes adjacent to the one of the light emitting cells.
1. A light emitting device, comprising:
a plurality of light emitting cells arranged on a single substrate;
a light emitting diode block comprising at least a light emitting cell of the plurality of light emitting cells;
four light emitting diode arrays each comprising at least a light emitting cell of the plurality of light emitting cells; and
two electrodes arranged on the substrate to supply power to the light emitting diode block and the light emitting diode arrays,
wherein a first electrode of the light emitting cell positioned at one end of the light emitting diode block is coupled to a second electrode of each of the light emitting cells positioned at one side end of two of the light emitting diode arrays, and
wherein a second electrode of the light emitting cell positioned at another end of the light emitting diode block is coupled to a first electrode of each of the light emitting cells positioned at one side end of the other two of the light emitting diode arrays.
2. The light emitting device of claim 1 , wherein the two electrodes are arranged at diagonally opposite corners of the substrate from each other.
3. The light emitting device of claim 1 , wherein the light emitting device is configured to operate on alternating current (AC) power.
4. The light emitting device of claim 3 , wherein the light emitting diode block is configured to emit light in response to application of both a forward bias cycle of the AC power and a reverse bias cycle of the AC power.
5. The light emitting device of claim 4 , wherein one of the light emitting diode arrays coupled to the first electrode of the light emitting cell positioned at the one end of the light emitting diode block, the light emitting diode block, and one of the light emitting diode arrays coupled to the second electrode of the light emitting cell positioned at the other end of the light emitting diode block are configured to emit light in response to application of the forward bias cycle of the AC power; and
wherein the other one of the light emitting diode arrays coupled to the second electrode of the light emitting cell positioned at the other end of the light emitting diode block, the light emitting diode block, and the other one of the light emitting diode arrays coupled to the first electrode of the light emitting cell positioned at the one end of the light emitting diode block are configured to emit light in response to application of the reverse bias cycle of the AC power.
6. The light emitting device of claim 3 , wherein one of the light emitting diode arrays coupled to the first electrode of the light emitting cell positioned at the one end of the light emitting diode block, the light emitting diode block, and one of the light emitting diode arrays coupled to the second electrode of the light emitting cell positioned at the other end of the light emitting diode block are configured to emit light in response to application of a forward bias cycle of the AC power; and
wherein the other one of the light emitting diode arrays coupled to the second electrode of the light emitting cell positioned at the other end of the light emitting diode block, the light emitting diode block, and the other one of the light emitting diode arrays coupled to the first electrode of the light emitting cell positioned at the one end of the light emitting diode block are configured to emit light in response to application of a reverse bias cycle of the AC power.
7. The light emitting device of claim 1 , further comprising a first serial array connected in parallel to a second serial array, the first serial array comprising the light emitting cells of the light emitting diode block and two of the light emitting diode arrays.