Display panel including stack of light-converging structure and band-pass filtering structure, manufacturing method thereof, and display apparatus

A method of manufacturing a display panel, comprising:

• preparing a first display substrate, which comprises forming a light-emitting element array on a first substrate, wherein the light-emitting element array comprises a plurality of light-emitting elements for generating and emitting a first color light;
• preparing a second display substrate, which comprises forming a color-conversion layer array on a second substrate, wherein the color-conversion layer array comprises a plurality of color-conversion layers which correspond to the plurality of light-emitting elements one by one, and the plurality of color-conversion layers are configured to generate other color lights under excitation of the first color light;
• and
• aligning and assembling the first display substrate and the second display substrate such that the light-emitting element array and the color-conversion layer array are located between the first substrate and the second substrate;
• wherein the preparing the second display substrate further comprises, after the forming the color-conversion layer array, a step of:
• forming a first band-pass filtering layer on one side of the color-conversion layer array distal to the second substrate, wherein the first band-pass filtering layer comprises:
• a first band-pass filtering structure in contact with a first light-converging structure, the first light-converging structure is arranged on one side of the first band-pass filtering structure distal to the second substrate, the first light-converging structure is configured to converge light rays, and the first band-pass filtering structure is configured to transmit the first color light and reflect the other color lights;
• and/or
• wherein the preparing the second display substrate further comprises, before the forming the color-conversion layer array, a step of:
• forming a second band-pass filtering layer on one side of the second substrate on which the color-conversion layer array is subsequently formed such that the second band-pass filtering layer comprises a second band-pass filtering structure and a second light-converging structure on one side of the second band-pass filtering structure distal to the second substrate, the second light-converging structure is configured to converge light rays, and the second band-pass filtering structure is configured to transmit the other color lights and reflect the first color light.

A method of manufacturing a display panel, comprising:

• forming a light-emitting element array on a first substrate such that the light-emitting element array comprises a plurality of light-emitting elements for generating and emitting a first color light;
• forming a color-conversion layer array on one side of the light-emitting element array, distal to the first substrate, wherein the color-conversion layer array comprises a plurality of color-conversion layers in one-to-one correspondence with the plurality of light-emitting elements, and the plurality of color-conversion layers are configured to generate other color lights under excitation of the first color light;
• between the forming the light-emitting element array and the forming the color-conversion layer array, the method further comprises:
• forming a first band-pass filtering layer on one side of the light-emitting element array distal to the first substrate such that the first band-pass filtering layer comprises a first light-converging structure in contact with a first band-pass filtering structure, wherein the first band-pass filtering structure is arranged on one side of the first light-converging structure distal to the first substrate, the first light-converging structure is configured to converge light rays, and the first band-pass filtering structure is configured to transmit the first color light and reflect the other color lights;
• and/or
• after the forming the color-conversion layer array, the method further comprises forming a second band-pass filtering layer on one side of the color-conversion layer array distal to the first substrate such that the second band-pass filtering layer comprises a second light-converging structure and a second band-pass filtering structure, the second light-converging structure is configured to converge light rays, and the second band-pass filtering structure is configured to transmit the other color lights and reflect the first color light.