Patent ID: 8754354

Claim:
A tight-emitting device comprising: a substrate; a light-emitting thyristor array formed of a plurality of light-emitting thyristors that are arrayed on the substrate in line, that each has a first anode, a first gate and a first cathode, and that each has one of the first anode and the first cathode being connected to a light-up signal line to supply a current for lighting up; a memory thyristor array formed of a plurality of memory thyristors that are provided on the substrate, that are provided so as to correspond to the respective light-emitting thyristors forming the light-emitting thyristor array, that each has a second anode, a second gate and a second cathode, that each has one of the second anode and the second cathode being connected through respective resistances to a memory signal line to supply a signal to designate a light-emitting thyristor to be caused to light up, that each has an ON state and an OFF state, and that each memorizes that a corresponding one of the light-emitting thyristors is to be caused to light up when changed into the ON state; and a transfer thyristor array formed of a plurality of transfer thyristors that are provided on the substrate, that are provided so as to correspond to the respective memory thyristors forming the memory thyristor array, that each has a third anode, a third gate and a third cathode, that each has the third gate being connected through a first electrical element to the second gate of a corresponding one of the memory thyristors, that each has an ON state and an OFF state, that each has one of the third anode and the third cathode being connected to a transfer signal line to supply signals to set so as to allow a sequential shift of the ON state from one end side to the other end side, and that change respective threshold voltages of the memory thyristors to a value to cause the respective memory thyristors to be able to be set in the ON state by changing into the ON state.