A control method of a control panel of a clothes treating apparatus, which has a panel body forming the external appearance of the control panel, a plurality of light discharge units provided on the panel body so that light emitted from a plurality of light emission units passes through the panel body, wherein the plurality of light emission units are located under the plurality of light discharge units and are emitting light toward the plurality of light discharge units, the plurality of light emission units including a target light emission unit and background light emission units, and wherein the target light emission unit is set through selection of input units by a user, the control method comprising: receiving a power supply command through a power input unit; and controlling the target light emission unit so as to emit light more brightly than the background light emission units by differentiating a duty cycle of current supplied to each of the plurality of light emission units between a duty cycle of the target light emission unit and a duty cycle of the background light emission units, when power is input, wherein the duty cycle of the target light emission unit and the duty cycle of the background light emission units are separately generated and controlled by a controller, wherein the plurality of light emission units are located in a matrix comprising a plurality of light emission unit columns and a plurality of light emission unit rows, wherein a plurality of scan lines are each configured to connect light emissions of a respective light emission unit column, each light emission column receiving substantially equal current in a regular cycle through a respective scan line, wherein a plurality of data lines (DT1, DT2,... DTn) are each configured to connect light emission units of a respective light emission unit row and configured to control a time during which a particular light emission unit receives current through a particular scan line, wherein respective light emission unit columns receive current of the same intensity at a regular cycle through the scan lines, wherein a current supply time of the scan lines is controlled through a timer and current is not supplied simultaneously to more than one of the scan lines and is supplied to the respective scan lines according to a designated cycle through the timer, wherein the target light emission unit is controlled so as to emit light at the brightest level and the background light emission units are controlled so as to emit light at the darkest level, and wherein, when power is input, all the light emission units become the brightest state and then, the remaining light emission units except for the target light emission unit are gradually darkened and become the darkest state.. receiving a power supply command through a power input unit; and controlling the target light emission unit so as to emit light more brightly than the background light emission units by differentiating a duty cycle of current supplied to each of the plurality of light emission units between a duty cycle of the target light emission unit and a duty cycle of the background light emission units, when power is input, wherein the duty cycle of the target light emission unit and the duty cycle of the background light emission units are separately generated and controlled by a controller, wherein the plurality of light emission units are located in a matrix comprising a plurality of light emission unit columns and a plurality of light emission unit rows, wherein a plurality of scan lines are each configured to connect light emissions of a respective light emission unit column, each light emission column receiving substantially equal current in a regular cycle through a respective scan line, wherein a plurality of data lines (DT1, DT2,... DTn) are each configured to connect light emission units of a respective light emission unit row and configured to control a time during which a particular light emission unit receives current through a particular scan line, wherein respective light emission unit columns receive current of the same intensity at a regular cycle through the scan lines, wherein a current supply time of the scan lines is controlled through a timer and current is not supplied simultaneously to more than one of the scan lines and is supplied to the respective scan lines according to a designated cycle through the timer, wherein the target light emission unit is controlled so as to emit light at the brightest level and the background light emission units are controlled so as to emit light at the darkest level, and wherein, when power is input, all the light emission units become the brightest state and then, the remaining light emission units except for the target light emission unit are gradually darkened and become the darkest state..