Pressure sensor, manufacturing method thereof, pressure sensing method and display device

A pressure sensor, comprising:

• a first electrode;
• at least two supports on a first surface of the first electrode;
• an elastic composite electrode on a surface of the at least two supports facing away from the first electrode, wherein two adjacent supports of the at least two supports, wherein the elastic composite electrode and the first electrode define a compressible space, and wherein the at least two supports comprise an insulating material;
• a second electrode on a surface of the elastic composite electrode facing away from the first electrode;
• and
• an organic light emitting layer between the first electrode and the second electrode,
• wherein the organic light emitting layer is in contact with one of the first electrode or the second electrode,
• wherein the elastic composite electrode is configured to electrically connect the first electrode with the second electrode in response to the pressure sensor being subjected to an external pressure, enabling the organic light emitting layer to emit light,
• wherein the elastic composite electrode comprises:
• a conductive sublayer on the surface of the at least two supports facing away from the first electrode, and
• a conductive elastic sublayer on a surface of the conductive sublayer facing away from the at least two supports,
• wherein the conductive elastic sublayer comprises an elastic layer and a third metal layer stacked on the conductive sublayer, the elastic layer is between the third metal layer and the conductive sublayer, and the elastic layer comprises a conductive component.