A display panel, comprising: a first electrode layer; an emissive layer group provided on the first electrode layer; a light extraction layer provided on the emissive layer group, the light extraction layer being in a light emission direction of the display panel and serving as a second electrode layer; and an encapsulation layer provided on the light extraction layer; wherein a refractive index of the light extraction layer is smaller than that of the encapsulation layer, so that anti-reflection of light emitted by the emissive layer group is realized; wherein the light extraction layer has a refractive index of between 1.15 and 1.35, the encapsulation layer has a refractive index of between 1.4 and 1.8, characterised in that the light extraction layer has a thickness of between 50 nm and 200 nm, and the encapsulation layer has a thickness of between 23 μm and 1 mm, and the light extraction layer comprises: a first conductive layer in contact with the emissive layer group, a first protective layer in contact with the first conductive layer, a second conductive layer in contact with the first protective layer, a second protective layer in contact with the second conductive layer, and a light-exiting layer in contact with the second protective layer, wherein the first conductive layer has a first refractive index n1 and a first thickness d1, the first protective layer has a second refractive index n2 and a second thickness d2, the second conductive layer has a third refractive index n3 and a third thickness d3, the second protective layer has a fourth refractive index n4 and a fourth thickness d4, and the light-exiting layer has a fifth refractive index n5 and a fifth thickness d5; wherein n1 is between 1.8 and 2.1, and d1 is between 20 nm and 80 nm; n2 is between 0.1 and 5, and d2 is between 0.5 nm and 10 nm; n3 is between 0.1 and 1.5, and d3 is between 5 nm and 50 nm; n4 is between 1.3 and 2.1, and d4 is between 0.5 nm and 10 nm; n5 is between 1.8 and 2.4, and d5 is between 20 nm and 80 nm. a first electrode layer; an emissive layer group provided on the first electrode layer; a light extraction layer provided on the emissive layer group, the light extraction layer being in a light emission direction of the display panel and serving as a second electrode layer; and an encapsulation layer provided on the light extraction layer; wherein a refractive index of the light extraction layer is smaller than that of the encapsulation layer, so that anti-reflection of light emitted by the emissive layer group is realized; wherein the light extraction layer has a refractive index of between 1.15 and 1.35, the encapsulation layer has a refractive index of between 1.4 and 1.8, characterised in that the light extraction layer has a thickness of between 50 nm and 200 nm, and the encapsulation layer has a thickness of between 23 μm and 1 mm, and the light extraction layer comprises: a first conductive layer in contact with the emissive layer group, a first protective layer in contact with the first conductive layer, a second conductive layer in contact with the first protective layer, a second protective layer in contact with the second conductive layer, and a light-exiting layer in contact with the second protective layer, wherein the first conductive layer has a first refractive index n1 and a first thickness d1, the first protective layer has a second refractive index n2 and a second thickness d2, the second conductive layer has a third refractive index n3 and a third thickness d3, the second protective layer has a fourth refractive index n4 and a fourth thickness d4, and the light-exiting layer has a fifth refractive index n5 and a fifth thickness d5; wherein n1 is between 1.8 and 2.1, and d1 is between 20 nm and 80 nm; n2 is between 0.1 and 5, and d2 is between 0.5 nm and 10 nm; n3 is between 0.1 and 1.5, and d3 is between 5 nm and 50 nm; n4 is between 1.3 and 2.1, and d4 is between 0.5 nm and 10 nm; n5 is between 1.8 and 2.4, and d5 is between 20 nm and 80 nm. a first conductive layer in contact with the emissive layer group, a first protective layer in contact with the first conductive layer, a second conductive layer in contact with the first protective layer, a second protective layer in contact with the second conductive layer, and a light-exiting layer in contact with the second protective layer, wherein the first conductive layer has a first refractive index n1 and a first thickness d1, the first protective layer has a second refractive index n2 and a second thickness d2, the second conductive layer has a third refractive index n3 and a third thickness d3, the second protective layer has a fourth refractive index n4 and a fourth thickness d4, and the light-exiting layer has a fifth refractive index n5 and a fifth thickness d5; wherein n1 is between 1.8 and 2.1, and d1 is between 20 nm and 80 nm; n2 is between 0.1 and 5, and d2 is between 0.5 nm and 10 nm; n3 is between 0.1 and 1.5, and d3 is between 5 nm and 50 nm; n4 is between 1.3 and 2.1, and d4 is between 0.5 nm and 10 nm; n5 is between 1.8 and 2.4, and d5 is between 20 nm and 80 nm.