Patent ID: 7531843
Filing Date: 2009-05-12
Classification: H01L

Abstract:
1. A structure of AC light-emitting diode (LED) dies, comprising: a substrate; two layers of a first conductivity type that are supported on the substrate and separated from each other, each of the layers of the first conductivity type having a wide end and a narrow end; two layers of a second conductivity type that are supported respectively on the two layers of the first conductivity type, each of the layers of the second conductivity type having a wide end and a narrow end; a first pad formed on one of the two layers of the first conductivity type, the first pad being disposed adjacent the narrow end of said one of the two layers of the first conductivity type; a second pad formed on one of the two layers of the second conductivity type, the second pad being disposed adjacent the wide end of said one of the two layers of a second conductivity type; a first conductive bridge that electrically connects the first pad to the second pad; another first pad formed on the other of the two layers of the first conductivity type, the another first pad being disposed adjacent the narrow end of said other of the two layers of the first conductivity type; and another second pad formed on the other of the two layers of the second conductivity type, the another second pad being disposed adjacent the wide end of said other of the two layers of the second conductivity type; a second conductive bridge that electrically connects the another first pad to the another second pad; wherein the AC LED emits light substantially continuously, when the first and second conductive bridges receive AC power, in response to the positive half-cycle and the negative half-cycle of the AC power.