Clothing treatment device and method for controlling clothing treatment device

A laundry treatment device comprising:

• a cabinet having a front opening;
• a door coupled to the cabinet to open and close the opening;
• a sensor configured to sense whether the door has closed the opening;
• a locker configured to lock the door to the cabinet;
• a drum accommodated in the cabinet to accommodate laundry;
• a driver connected to the drum to rotate the drum;
• and
• a control panel comprising:
• a power part configured to receive an input of a power-on command to supply power;
• a selection part configured to receive an input of a selection command to select one of a washing course and a drying course;
• a display part configured to display weight information including execution times of the washing course and the drying course;
• and
• an execution part configured to receive an input of an execution command to execute a course for treatment of the laundry,
• wherein:
• the driver is configured to rotate the drum with the locker unlocked when the input is received through the power part;
• the display part is configured to display the weight information after the drum starts rotating;
• and
• the execution part is configured to receive the input of the execution command while the display part is displaying the weight information after the drum starts rotating,
• wherein the display part is configured to first display the execution time of the washing course, and then display the execution time of the drying course when the selection command for selecting the drying course is input through the selection part.