Display panel and display apparatus including transmission area within component area

A display panel including a main display area, a component area including a transmission area, and a peripheral area outside the main display area, the display panel comprising:

• a substrate;
• an inorganic insulating layer over the substrate and including a first hole corresponding to the transmission area;
• a planarization layer over the inorganic insulating layer and including a second hole corresponding to the transmission area;
• a pixel definition layer over the planarization layer, having a thickness of 1.3 μm to 2 μm and including a third hole corresponding to the transmission area;
• and
• a thin film encapsulation layer over the pixel definition layer and including a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer,
• wherein the organic encapsulation layer is in the first hole, the second hole, and the third hole.