A panel repairing method includes detecting a defective portion of a panel, providing primary ink, which is ejected from an ink ejection pin, onto a first portion of the defective portion, spreading the primary ink in a direction parallel to a plane defined on the panel, temporarily curing the primary ink, providing secondary ink, which is ejected from the ink ejection pin, onto a second portion of the defective portion disposed adjacent to the first portion, and curing the primary ink and the secondary ink.