Display panel and display device

A display panel comprising:

• a substrate;
• at least three different light-emitting units disposed on the substrate and emitting at least three different colors;
• and
• at least three buffer encapsulation layers disposed on a side of the at least three different light-emitting units facing away from the substrate, wherein the at least three buffer encapsulation layers are in one-to-one correspondence with the at least three different light-emitting units, a thickness of at least one buffer encapsulation layer corresponding to at least one light-emitting unit among the at least three different light-emitting units is different from respective thicknesses of the other buffer encapsulation layers corresponding to the other light-emitting units among the at least three different light-emitting units, one of the at least three different light-emitting units comprises an anode, a light-emitting layer, and a cathode layer, and as a viewing angle increases in a range, a rate at which a brightness of the light emitted from the third light-emitting unit decays is greater than a rate at which a brightness of the light emitted from the first light-emitting unit decays and a rate at which a brightness of the light emitted from the second light-emitting unit decays respectively, and a thickness of the cathode layer of the third light-emitting unit is less than a thickness of the cathode layer of the first light-emitting unit and a thickness of the cathode layer of the second light-emitting unit respectively.

A display device, comprising a display panel, wherein the display panel comprises:

• a substrate;
• at least three different light-emitting units disposed on the substrate and emitting at least three different colors;
• and
• at least three buffer encapsulation layers disposed on a side of the at least three different light-emitting units facing away from the substrate, wherein the at least three buffer encapsulation layers are in one-to-one correspondence with the at least three different light-emitting units, a thickness of at least one buffer encapsulation layer corresponding to at least one light-emitting unit among the at least three different light-emitting units is different from respective thicknesses of the other buffer encapsulation layers corresponding to the other light-emitting units among the at least three different light-emitting units, and thicknesses of each cathode layer of the at least three different light-emitting units vary in proportion to rates at which brightness of light emitted from each light-emitting unit decays.

A display panel, comprising:

• a substrate;
• at least three different light-emitting units disposed on the substrate and configured to emit at least three different colors;
• at least three buffer encapsulation layers disposed on a side of the at least three different light-emitting units facing away from the substrate, wherein the at least three buffer encapsulation layers are in one-to-one correspondence with the at least three different light-emitting units and one of the at least three different light-emitting units comprises an anode, a light-emitting layer, and a cathode layer, and the plurality of light extraction layers is in direct contact with the cathode layer;
• and
• a plurality of light extraction layers disposed on one side of the at least three buffer encapsulation layers adjacent to the at least three different light-emitting units, wherein a thickness of at least one buffer encapsulation layer corresponding to at least one light-emitting unit among the at least three different light-emitting units is different from respective thicknesses of the other buffer encapsulation layers corresponding to the other light-emitting units among the at least three different light-emitting units.