Patent ID: 8294386
Filing Date: 2012-10-23
Classification: H01L,H05B,Y02B

Abstract:
1. A light emitting device having a substrate and a plurality of light emitting cells formed on the substrate, comprising: a first connection electrode and a second connection electrode; a light emitting cell block comprising a plurality of serially connected light emitting cells; and a bridge rectification block comprising first, second, third, and fourth diode blocks, each first, second, third, and fourth diode block comprising a plurality of light emitting diodes, wherein a first electrode of a light emitting cell at a first end of the light emitting cell block is directly connected to the first connection electrode, the first connection electrode being further connected to respective light emitting diodes at a first end of the first diode block and at a first end of the third diode block in the bridge rectification block, wherein a second electrode of a light emitting cell at a second end of the light emitting cell block is directly connected to the second connection electrode, the second connection electrode being further connected to respective light emitting diodes at a first end of the second diode block and at a first end of the fourth diode block in the bridge rectification block, and wherein the number of light emitting diodes in the bridge rectification block is 100 to 200% the number of light emitting cells in the light emitting cell block.