Organic light-emitting display apparatus and fabrication method thereof

An organic light-emitting display apparatus, comprising:

• a substrate;
• a device component layer disposed over the substrate;
• a plurality of first electrodes disposed over the device component layer and one-to-one corresponding to a plurality of sub-pixels;
• a pixel-defining layer having a plurality of opening regions to expose the first electrodes formed over the device component layer;
• a plurality of photo spacers, disposed on the pixel-defining layer and between adjacent opening regions, and surrounding at least one opening region to provide a first photo spacer group along the at least one opening region in a first direction and provide a second photo spacer group along the at least one opening region in a second direction different from the first direction;
• an organic light-emitting layer disposed in the at least one opening region of the pixel-defining layer and in contact with the first electrodes;
• and
• a second electrode disposed on the organic light-emitting layer,
• wherein the first photo spacer group comprises a plurality of isolated first photo spacers, and the second photo spacer group comprises a plurality of isolated second photo spacers, and
• the first photo spacer group has a continuous projection on the first direction, and the second photo spacer group has a continuous projection on the second direction.