Patent ID: 8624508

Claim:
An LED device, comprising: voltage-limiting units ( 105 ) each including a semiconductor unit having a resistance that rapidly drops when subject to overvoltage; voltage-limiting resistances ( 107 ) each including a resistive component; at least two light-emitting units, each light-emitting unit including at least one light-emitting diode ( 101 ) in parallel with a respective one of said voltage-limiting units ( 105 ) and a respective one of said voltage-equalizing resistances ( 107 ); and a diode ( 106 ), wherein at least two of the light-emitting units are connected in series or series-parallel with a same polarity, and wherein two ends of the series-connected light-emitting units connected in series with the same polarity are connected in parallel in reverse polarity with said diode ( 106 ).