Light device for a motor vehicle, comprising a matrix light source

A lighting device for a motor vehicle, comprising a matrix-array light source having a matrix array of electroluminescent semiconductor element-based elementary light sources, and a circuit for managing the supply of electrical power to at least one group of elementary light sources, the circuit for managing the supply of electrical power comprising a control unit and, for each elementary light source of the group, a switch element for selectively connecting said elementary light source to an electricity source, the control unit being further intended to control the open state of the switch elements by means of a pulse-width-modulation binary control signal, wherein the emitting area of each of the elementary light sources is smaller than or equal to 0.2 mm2, and in that the control unit is able to transmit a control signal having a frequency higher than or equal to 300 Hz,

• wherein the matrix-array light source comprises an integrated circuit in contact with the matrix array of light sources, and the integrated circuit comprises at least a portion of the circuit for managing the supply of electrical power to the elementary light sources,
• the integrated circuit comprises, for each of the elementary light sources of the matrix array of elementary light sources, a delay circuit configured to delay, by a predetermined duration, the supply of power to the elementary source following reception of a command from the control signal, and
• the delay circuit for each of the elementary light sources of the matrix array of elementary light sources comprises a memory element for recording a delay value.