Electronic control device comprising: - an electronic circuit having an operative face on which a plurality of LEDs are mounted; - a frame defining a plurality of first channels which face said LEDs so as to guide their light radiation; - a composite screen which covers said first channels so as to be crossed by a light radiation coming from said LEDs and guided by said first channels towards said composite screen; said composite screen comprises: - a diffuser layer configured to homogenize a light radiation that crosses it; - an operative layer having electronic tracks comprising touch-sensitive pads and respective connection contacts; said electronic control device further comprising at least one connector which electrically connects said respective connection contacts of the touch-sensitive pads to said electronic circuit in order to transmit to the latter electrical signals following touching, by a user, of at least one of said sensitive pads on said composite screen; wherein said frame has at least one second channel facing said connection contacts; wherein said at least one connector extends through said at least one second channel between said electronic circuit and said composite screen; wherein said electronic circuit is configured to process signals received from said touch-sensitive pads; and wherein said at least one connector comprises an electrically conductive element having a matrix made of elastomeric material and extending between said electronic circuit and said connection contacts with which it is in electrical contact. - an electronic circuit having an operative face on which a plurality of LEDs are mounted; - a frame defining a plurality of first channels which face said LEDs so as to guide their light radiation; - a composite screen which covers said first channels so as to be crossed by a light radiation coming from said LEDs and guided by said first channels towards said composite screen; said composite screen comprises: - a diffuser layer configured to homogenize a light radiation that crosses it; - an operative layer having electronic tracks comprising touch-sensitive pads and respective connection contacts; - a diffuser layer configured to homogenize a light radiation that crosses it; - an operative layer having electronic tracks comprising touch-sensitive pads and respective connection contacts; said electronic control device further comprising at least one connector which electrically connects said respective connection contacts of the touch-sensitive pads to said electronic circuit in order to transmit to the latter electrical signals following touching, by a user, of at least one of said sensitive pads on said composite screen; wherein said frame has at least one second channel facing said connection contacts; wherein said at least one connector extends through said at least one second channel between said electronic circuit and said composite screen; wherein said electronic circuit is configured to process signals received from said touch-sensitive pads; and wherein said at least one connector comprises an electrically conductive element having a matrix made of elastomeric material and extending between said electronic circuit and said connection contacts with which it is in electrical contact.