Patent ID: 8508566
Filing Date: 2013-08-13
Classification: B41J,G03G

Abstract:
1. A light emitting apparatus comprising: a plurality of light emitting chips that each have a plurality of light emitting devices and are divided into a plurality of chip groups, the light emitting devices in each of the light emitting chips being divided into a plurality of device groups; a first wire that transmits in common a transmission signal to the light emitting chips in order to successively set the light emitting devices in each of the light emitting chips as subjects of turn-on or non-turn-on control; a second wire that transmits in common a first selection signal to a given chip group of the light emitting chips in order to select the given chip group as a subject of the turn-on control in a period in which the light emitting devices in each of the light emitting chips are set as the subjects of the turn-on or non-turn-on control based on the transmission signal; a third wire that transmits in common a second selection signal to a set of the device groups in order to select the set of the device groups as a subject of the turn-on control in the period in which the light emitting devices in each of the light emitting chips are set as the subjects of the turn-on or non-turn-on control based on the transmission signal, the set of the device groups including a first device group of the light emitting devices in the light emitting chips belonging to one of the chip groups and a second device group of the light emitting devices in the light emitting chips belonging to the others of the chip groups; and a fourth wire that transmits a turn-on control signal to each of the chip groups in order to control power supply for turning on the light emitting devices in the period in which the light emitting devices in each of the light emitting chips are set as the subjects of the turn-on or non-turn-on control based on the transmission signal.