Display substrate with overlapped main electrode and power supply signal line, and display device

A display substrate comprising:

• a base substrate;
• a plurality of subpixels on the base substrate, each of at least some of the plurality of subpixels comprising a light-emitting element and a pixel circuit, the light-emitting element comprising a light-emitting functional layer and a first electrode and a second electrode provided on two sides of the light-emitting functional layer in a direction perpendicular to the base substrate, the first electrode being provided between the light-emitting functional layer and the base substrate, the light-emitting element being at least partially provided in a light-emitting region, and the first electrode of the light-emitting element comprising a main electrode overlapping with the light-emitting region;
• a plurality of power supply signal lines, at least some of the plurality of power supply signal lines extending in the first direction and arranged in a second direction, the plurality of power supply signal lines being provided between the base substrate and the first electrode of the light-emitting element, the first direction intersects the second direction, wherein
• the at least some of the plurality of subpixels comprise a plurality of first subpixels, at least one power supply signal line comprises a first power supply part overlapping with the main electrode of at least one of the plurality of first subpixels in a third direction perpendicular to the base substrate, the first power supply part includes a first main portion and a second main portion,
• in the second direction, a maximum size of the main electrode of the first subpixel is not smaller than a maximum size of its corresponding first power supply part, a maximum size of the first main portion is greater than a maximum size of the second main portion in the first power supply part, a connection line of two endpoints of the main electrode of the first subpixel farthest from each other in the second direction is an endpoint connection line, and the endpoint connection line overlaps with the first main portion in the third direction;
• the plurality of first subpixels comprise at least one first type subpixel, the first power supply part overlapping with the main electrode of the first type subpixel is a first type power supply part, and the first main portion of the first type power supply part is an asymmetric structure;
• the first main portion of the first type power supply part comprises a first protrusion, and the first protrusion is provided on a side of a first symmetric centerline, extending in the first direction, of the second main portion;
• the plurality of first subpixels further comprise at least one second type subpixel, and the first power supply part overlapping with the main electrode of the second type subpixel is a second type power supply part,
• the second type power supply part comprises a third symmetric centerline extending in the first direction, the main electrode of the second type subpixel comprises a fourth symmetric centerline extending in the first direction, the third symmetric centerline of the second type power supply part in a same column of power supply signal line and the fourth symmetric centerline of the second type subpixel overlapping with the second type power supply part are provided in a same plane perpendicular to the base substrate.

A display substrate comprising:

• a base substrate;
• a plurality of subpixels on the base substrate, each of at least some of the plurality of subpixels comprising a light-emitting element and a pixel circuit, the light-emitting element comprising a light-emitting functional layer and a first electrode and a second electrode provided on two sides of the light-emitting functional layer in a direction perpendicular to the base substrate, the first electrode being provided between the light-emitting functional layer and the base substrate, the light-emitting element being at least partially provided in a light-emitting region, and the first electrode of the light-emitting element comprising a main electrode overlapping with the light-emitting region;
• a plurality of power supply signal lines, at least some of the plurality of power supply signal lines extending in the first direction and arranged in a second direction, the plurality of power supply signal lines being provided between the base substrate and the first electrode of the light-emitting element, the first direction intersects the second direction, wherein
• the at least some of the plurality of subpixels comprise a plurality of first subpixels, at least one power supply signal line comprises a first power supply part overlapping with the main electrode of at least one of the plurality of first subpixels in a third direction perpendicular to the base substrate, the first power supply part includes a first main portion and a second main portion,
• in the second direction, a maximum size of the main electrode of the first subpixel is not smaller than a maximum size of its corresponding first power supply part, a maximum size of the first main portion is greater than a maximum size of the second main portion in the first power supply part, a connection line of two endpoints of the main electrode of the first subpixel farthest from each other in the second direction is an endpoint connection line, and the endpoint connection line overlaps with the first main portion in the third direction;
• the plurality of first subpixels comprise at least one first type subpixel, the first power supply part overlapping with the main electrode of the first type subpixel is a first type power supply part, and the first main portion of the first type power supply part is an asymmetric structure;
• the first main portion of the first type power supply part comprises a first protrusion, and the first protrusion is provided on a side of a first symmetric centerline, extending in the first direction, of the second main portion;
• the main electrode of the first subpixel comprises a first corner and a second corner opposite to each other, and a third corner and a fourth corner opposite to each other,
• an orthographic projection of at least one of the first corner and the second corner on the base substrate at least partially overlaps with an orthographic projection of the first symmetric centerline on the base substrate, and an orthographic projection of the fourth corner on the base substrate and an orthographic projection of the first protrusion on the base substrate at least partially overlap with each other;
• the main electrode of the first subpixel comprises a plurality of corners, the plurality of corners include the first corner, the second corner, the third corner and the fourth corner, edges or their extension lines of the main electrode are connected in turn into a polygon, and each of a plurality of vertex angles of the polygon has a region that does not overlap with the corresponding corner of the main electrode,
• a non-overlapping region of the third corner and the corresponding vertex angle of the polygon is greater than a non-overlapping region of each of at least some of other corners and the corresponding vertex angle of the polygon.