Cleaning apparatus

A cleaning apparatus for cleaning a deposition mask used for depositing organic electroluminescent materials, comprising:

• a cleaning tank containing a cleaning solution therein;
• a rinse tank containing a rinse solution therein;
• and
• a carrying device that holds the deposition mask at a predetermined angle with respect to a horizontal direction, carries the held deposition mask to the cleaning tank, retrieves the deposition mask from the cleaning tank and carries the retrieved deposition mask to the rinse tank,
• wherein the carrying device is configured to lay down horizontally to receive the deposition mask and to stand up in a vertical direction to hold the received deposition mask at the predetermined angle,
• the carrying device comprises a holding member that slides along a vertical guide portion to engage with a first edge portion of the deposition mask and a hook that receives a second edge portion of the deposition mask when the holding member slides to engage, and
• the carrying device is configured so that, when the carrying device stands up, the deposition mask is held slanting from the vertical guide portion between the sliding holding member and the receiving hook.