Display apparatuses, display substrates, and methods of preparing display substrates

A display apparatus, comprising a display substrate comprising a display area and a frame area surrounding the display area, wherein the display substrate further comprises:

• a base substrate;
• a drive circuit layer provided on the base substrate;
• an insulating material structure provided on a side of the drive circuit layer facing away from the base substrate, located in the display area and at least a portion of the frame area, and provided with a step structure at an edge thereof;
• a light-emitting layer provided on a side of the insulating material structure facing away from the drive circuit layer;
• an encapsulation layer covering the light-emitting layer;
• a first barrier wall provided on the side of the drive circuit layer facing away from the base substrate, surrounding the insulating material structure, and configured to block a portion of the encapsulation layer, wherein the edge of the insulating material structure provided with the step structure is an edge of the insulating material structure close to the first barrier wall;
• a conductive connection structure provided inside the insulating material structure and electrically connected with the drive circuit layer;
• and
• one or more light-transmitting wires, comprising one portion provided in the display area and the other portion provided in the frame area, and configured to transmit light, electrically connect at least a portion of the conductive connection structure with the light-emitting layer, and electrically connect the light-emitting layer with the drive circuit layer,
• wherein
• the display area comprises a first display area and a second display area, the second display area being an area corresponding to a photosensitive device, and the first display area being an area in the display area other than the second display area;
• the light-emitting layer comprises at least one first light-emitting structure located in the first display area and at least one second light-emitting structure located in the second display area;
• at least a portion of the drive circuit layer and at least a portion of the conductive connection structure are located in the frame area, and the portion of the drive circuit layer located in the frame area is electrically connected with the portion of the conductive connection structure located in the frame area;
• and
• for each of the one or more light-transmitting wires, one end of the light-transmitting wire is electrically connected with the portion of the conductive connection structure located in the frame area, and the other end of the light-transmitting wire is electrically connected with the second light-emitting structure.

A method of preparing a display substrate comprising a display area and a frame area surrounding the display area, the method comprising:

• providing a base substrate;
• forming a drive circuit layer on the base substrate;
• forming an insulating material structure and a conductive connection structure on a side of the drive circuit layer facing away from the base substrate, the insulating material structure being provided with a step structure at an edge thereof, and located in the display area and at least a portion of the frame area, and the conductive connection structure being provided inside the insulating material structure and electrically connected with the drive circuit layer;
• forming a light-emitting layer on a side of the insulating material structure facing away from the drive circuit layer;
• forming an encapsulation layer to cover the light-emitting layer;
• and
• forming a first barrier wall on the side of the drive circuit layer facing away from the base substrate, the first barrier wall surrounding the insulating material structure, and being configured to block a portion of the encapsulation layer, wherein the edge of the insulating material structure provided with the step structure is an edge of the insulating material structure close to the first barrier wall,
• wherein the method further comprises;
• forming one or more light-transmitting wires within the insulating material structure, such that the one or more light-transmitting wires comprise one portion provided in the display area and the other portion provided in the frame area, and are configured to transmit light, electrically connect at least a portion of the conductive connection structure with the light-emitting layer, and electrically connect the light-emitting layer with the drive circuit layer,
• wherein
• the display area comprises a first display area and a second display area, the second display area being an area corresponding to a photosensitive device, and the first display area being an area in the display area other than the second display area;
• the light-emitting layer comprises at least one first light-emitting structure located in the first display area and at least one second light-emitting structure located in the second display area;
• at least a portion of the drive circuit layer and at least a portion of the conductive connection structure are located in the frame area, and the portion of the drive circuit layer located in the frame area is electrically connected with the portion of the conductive connection structure located in the frame area;
• and
• for each of the one or more light-transmitting wires, one end of the light-transmitting wire is electrically connected with the portion of the conductive connection structure located in the frame area, and the other end of the light-transmitting wire is electrically connected with the second light-emitting structure.