invention by referring to the annexed drawings fig2 is a perspective view of a washing machine in accordance with the present embodiment as shown in fig2 the washing machine in accordance with the present embodiment includes a main body 10 forming an external appearance of the washing machine a tub not shown installed in the main body 10 to store washing water and a drum 12 rotatably installed in the tub to wash laundry an opening 13 is formed through a front surface of the main body 10 so that a user can put laundry into an inside of the tub through the opening 13 and a door 14 to open and close the opening 13 is installed a control panel assembly 100 to control an operation of the washing machine is provided on an upper portion of the front surface of the main body 10 fig3 is an exploded perspective view of the control panel assembly of the washing machine in accordance with the present embodiment and fig4 is a sectional view of the control panel assembly of the washing machine in accordance with the present embodiment as shown in fig3 and 4 the control panel assembly 100 includes a control panel 110 provided with an opening 111 formed through one side thereof and a circuit board 120 installed in the control panel 110 a rotary switch 121 is installed on the circuit board 120 and a plurality of leds 122 is installed on the circuit board 120 around the rotary switch 121 the rotary switch 121 includes a.