Array substrate, display panel and display device

A display panel, comprising an array substrate,

• wherein the array substrate comprises:
• a base;
• a buffer layer provided on the base, wherein the buffer layer comprises a first buffer layer and a second buffer layer, the first buffer layer is disposed between the second buffer layer and the base, a refractive index of the first buffer layer is greater than or equal to 1.5 and less than or equal to 1.7, the refractive index of the first buffer layer is greater than a refractive index of the base and a refractive index of the second buffer layer, and a ratio of the refractive index of the first buffer layer to the refractive index of the base is less than or equal to 1.25;
• and
• a thin film transistor provided on a side of the buffer layer away from the base.

A display device, comprising:

• a display panel comprising an array substrate;
• and
• a backlight module provided on a side of the display panel opposite to a light-emitting side of the display panel,
• wherein the array substrate comprises:
• a base;
• a buffer layer provided on the base, wherein the buffer layer comprises a first buffer layer and a second buffer layer, the first buffer layer is disposed between the second buffer layer and the base, a refractive index of the first buffer layer is greater than or equal to 1.5 and less than or equal to 1.7, the refractive index of the first buffer layer is greater than a refractive index of the base and a refractive index of the second buffer layer, and a ratio of the refractive index of the first buffer layer to the refractive index of the base is less than or equal to 1.25;
• and
• a thin film transistor provided on a side of the buffer layer away from the base.