US Patent 11329255 Display device

A display device is disclosed, wherein the display device comprises a hole area on a substrate, a buffer area configured to surround the hole area, and a display area configured to surround the buffer area, wherein the display area includes a thin film transistor including a gate electrode, a source electrode, and a drain electrode on the substrate, the buffer area is provided with a damage preventing portion configured to control damages generated in a process of forming the hole area from extending to the display area, and the damage preventing portion is formed of a same material as a material of the source and drain electrodes.