Patent ID: 8698864
Filing Date: 2014-04-15
Classification: G03G

Abstract:
1. A driver apparatus for driving a plurality of aligned light emitting thyristors, wherein each light emitting thyristor including a first terminal, a second terminal, and a control terminal that causes the light emitting thyristor to turn on and off, the driver apparatus comprising: a common terminal, each light emitting thyristor being disposed at one of a first position where the first terminal is connected to the first potential and the second terminal is connected to the common terminal and a second position where the first terminal is connected to the common terminal and the second terminal is connected to the second potential; a first resistor connected between the first potential and the common terminal; a second resistor connected between the common terminal and the second potential, wherein the first resistor and the second resistor constitute a voltage divider that divides a difference between the first and the second potential; a switch connected at one of a third position where the switch is connected between the first potential and the common terminal and a fourth position where the switch is connected between the common terminal and the second potential, the switch being driven by a control signal to close and open.