Display apparatus

A display apparatus comprising:

• a display panel;
• a rear chassis configured to support the display panel;
• and
• a light source module positioned on the rear chassis,
• wherein the light source module comprises:
• a light source configured to emit light periodically by power of a power source periodically applied so as to adjust an intensity of the light,
• a light source board electrically connectable with the light source, the light source board configured to be periodically moved at least partially closer to the rear chassis based on the power of the power source periodically applied to the light source, and
• a sound-absorbing layer positioned on the light source board and configured to be moved in and out of contact with the rear chassis with movement of the light source board so as to reduce noise caused by the light source board and the rear chassis.