Patent ID: 8354796

Claim:
A reverse polarity series type LED is formed by two sets of LED and diode assemblies in reverse polarity series connection wherein a first set consists of at least one or multiple homopolar series or parallel connected or series and parallel connected LEDs, and a second set consists of at least one or more homopolar parallel or series connected or series and parallel connected LEDs for further connection to the drive circuit formed by current-limiting impedance and/or power storage and discharging devices and/or voltage-limit circuit devices in order to produce required operational characteristics, its main formation consisting of: a LED ( 101 ): formed by one or more luminous diodes in homopolar parallel or series connection or in series and parallel connection, a LED ( 102 ): formed by one or more luminous diodes in homopolar parallel or series connection or in series and parallel connection, and diodes ( 201 ), ( 202 ): formed by one or more rectified diode or single way conductive circuit devices in parallel or series connection or in series and parallel connection, wherein: by means of parallel connection between the LED ( 101 ) and the diode ( 201 ) in a reciprocal turn-on current direction, the first set of LED and diode assembly is formed, by means of the parallel connection between the LED ( 102 ) and the diode ( 202 ) in the reciprocal turn-on current direction, the second LED and diode assembly is formed; by means of a reverse polarity series connection between the first LED and diode assembly with the second LED and diode assembly, a reverse polarity series type LED device is formed; wherein an independent connection terminal of the first LED and diode assembly is designated as the (a) terminal, the reverse polarity series connection terminal between the first and the second LED and diode assemblies is designated as the (b) terminal, and the independent connection terminal of the second LED and diode assembly is designated as the (c) terminal; a current-limiting impedance element ( 400 ) is series-connected to the (a) or (c) terminals and the reverse polarity series type LED and/or a current-limiting impedance element ( 401 ) is series connected to LED ( 101 ) and/or a current-limiting impedance element ( 402 ) is series-connected to the LED ( 102 ); wherein the impedance elements are formed by one or more impedance element types including: 1) resistive impedance element 2) conductive impedance elements 3) inductive impedance elements 4) linear transistor impedance elements 5) clipping on-off type elements formed by solid on-off type elements 6) thyristor clipping on-off elements; and the series positions of the impedance elements include: 1) the impedance element is connected in series with individual LEDs after which the impedance element is connected in parallel with diodes; and/or 2) the impedance element is connected in series between the power source and the reverse polarity series type LED; and/or 3) the LED connects to the diode in parallel and then connects to the impedance element in series.