SELF-SCANNING LIGHT-EMITTING DEVICE

摘要

A self-scanning light-emitting device is provided in which the number of bonding pads can be decreased, i.e. 2 or 3. The device comprises an array of a plurality of three-terminal light-emitting elements ; electrical means having unidirectional characteristic to voltage or current for connecting the control electrodes of neighboring light-emitting elements to each other ; two clock pulse lines for applying two-phase clock pulses alternately to one of two terminals except the control electrode of each light-emitting element ; and a power supply line connected to each of the control electrodes of the light-emitting elements via a load resistor, respectively. The resistance of the load resistor connected to the light-emitting element to be turned on at first is selected to be smaller than that of other resistors. As a result, the bonding pad for the start pulse may be omitted. <IMAGE>