Touch screen panel and display apparatus

A touch display panel, comprising a display region and a peripheral region surrounding the display region;

• wherein the touch display panel comprises:
• a display substrate, comprising a base substrate, a pixel defining layer and an encapsulation layer, wherein the pixel defining layer and the encapsulation layer are located at a side of the base substrate;
• the pixel defining layer comprises a plurality of opening regions, the encapsulation layer comprises at least one organic encapsulation layer at a side of the pixel defining layer away from the base substrate;
• in the display region, a difference between a minimum thickness of the organic encapsulation layer comprised in the encapsulation layer in a direction perpendicular to the base substrate and a size h2 of the touch display panel is greater than or equal to 1 micrometer;
• wherein in the display region, the minimum thickness of the organic encapsulation layer comprised in the encapsulation layer in the direction perpendicular to the base substrate is a thickness of the organic encapsulation layer corresponding to a position where the pixel defining layer is located in the direction perpendicular to the base substrate;
• and
• a touch layer, located at a display side of the display substrate.