Patent ID: 8581952
Filing Date: 2013-11-12
Classification: B41J,G03G,G06K,H05B

Abstract:
1. A light-emitting device comprising: a plurality of light-emitting chips each having a plurality of light-emitting elements, and each being designated, as a control target for lighting up or not lighting up, by two to Q designation signals (Q is an integer of two or more), where a number of the plurality of light-emitting chips is more than P but not more than a light-up signal generating part that transmits a light-up signal to supply power for lighting up to at least a part of the plurality of light-emitting elements of the plurality of light-emitting chips through a light-up signal line connected in common to at least the part of the plurality of light-emitting chips; and a selection signal generating part that selectively transmits P selection signals to the plurality of light emitting chips through P selection signal lines, and designates each of the plurality of light-emitting chips as the control target by the designation signals for each of the light-emitting chips, the designation signals each including a combination of two to Q selection signals taken from the P selection signals, the combinations all being different from each other.