Display panel, manufacturing method thereof, and display device

A method for manufacturing a display panel, comprising:

• forming a light-emitting device layer comprising a plurality of light-emitting elements on a substrate;
• forming a light-shielding layer on a side of the light-emitting device layer away from the substrate, wherein the light-shielding layer comprises a plurality of first openings, and in a direction perpendicular to a plane of the substrate, the first openings overlap the light-emitting elements;
• forming a low refractive index layer on the light-shielding layer, wherein the low refractive index layer comprises a plurality of second openings, and the second openings expose the first openings;
• and
• forming a reflection adjustment layer located at least in the first openings and the second openings, wherein the reflection adjustment layer comprises a dye, and a refractive index of the reflection adjustment layer is greater than a refractive index of the low refractive index layer.

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

• a substrate;
• a light-emitting device layer comprising light-emitting elements;
• a light-shielding layer located on a side of the light-emitting device layer away from the substrate, wherein the light-shielding layer comprises first openings, and in a direction perpendicular to a plane of the substrate, the first openings overlap the light-emitting elements;
• a low refractive index layer located on at least a side of the light-shielding layer away from the substrate, wherein the low refractive index layer comprises second openings, and the second openings expose the first openings;
• and
• a reflection adjustment layer located at least in the first openings and the second openings, wherein the reflection adjustment layer comprises a dye, and a refractive index of the reflection adjustment layer is greater than a refractive index of the low refractive index layer.