CN-121985690-A - Display substrate and display device

Abstract

The display substrate comprises a display area and a binding area located on one side of the display area along a first direction, wherein the display area comprises a first sub-display area and a second sub-display area, the data signal line comprises a first data signal line located in the first sub-display area and a second data signal line located in the second sub-display area, the data transmission line is connected with the second data signal line and extends to the binding area, and the data transmission line comprises a first transmission line extending along a second direction and a second transmission line extending along the first direction. The display substrate further includes an insulating layer between the first transmission line and the second transmission line, the second end of the first transmission line and the first via at least partially overlapping in a direction perpendicular to the substrate. When the density of the data signal lines and the data transmission lines is high, the second transmission lines in the data transmission lines at least partially overlap with the first through holes in the insulating layer, so that the arrangement of the wirings is facilitated.

Inventors

• LI ZHENGKUN
• CHEN DU
• XIAO XINGLIANG
• YU ZIYANG
• HU JING
• QIN YUEJIAO

Assignees

• 京东方科技集团股份有限公司
• 成都京东方光电科技有限公司
• 北京京东方技术开发有限公司

Dates

Publication Date

20260505

Application Date

20241031

Claims (20)

1. 1. The display substrate comprises a display area and a binding area positioned on one side of the display area along a first direction, wherein the size of the display area along a second direction perpendicular to the first direction is larger than that of the binding area along the second direction, the edge of the display area, which is close to the binding area, is a binding edge, and the display area comprises a first sub-display area and a second sub-display area, wherein the first sub-display area at least partially overlaps with the binding area along the first direction, and the second sub-display area is positioned on at least one side of the first sub-display area and does not overlap with the binding area along the first direction; A plurality of data signal lines at least partially located in the display region, extending in the first direction, and arranged in the second direction, the plurality of data signal lines including a first data signal line located in the first sub-display region and a second data signal line located in the second sub-display region; a data transmission line connected to the second data signal line and extending to the bonding region, at least a portion of the data transmission line including a first transmission line extending in the second direction and a second transmission line extending in the first direction; wherein a first end of the first transmission line is connected with the second data signal line to form a first connection point; The display substrate further comprises a substrate, wherein the data signal line and the data transmission line are arranged on the substrate, an insulating layer is arranged between the first transmission line and the second transmission line, and the second end of the first transmission line is connected with one end of the second transmission line through a first through hole in the insulating layer to form a second connection point; The second end of the first transmission line and the first via at least partially overlap in a direction perpendicular to the substrate base plate.
2. 2. The display substrate according to claim 1, wherein the data signal line is provided different from the first transmission line; The second transmission line comprises a first transmission sub-layer and a second transmission sub-layer, the first transmission sub-layer and the first transmission line are arranged on the same layer, the second transmission sub-layer and the data signal line are arranged on the same layer, and the first transmission sub-layer and the second transmission sub-layer are electrically connected through a second via hole in the insulating layer; The distance between the orthographic projection of the second via hole on the substrate and the orthographic projection of the first via hole on the substrate is a first distance, and the distance between the orthographic projection of the second via hole on the substrate and the orthographic projection of the first transmission line on the substrate in the first direction is a second distance; The ratio of the first distance to the second distance is 0.9-1.1.
3. 3. The display substrate according to claim 2, wherein the data transmission line includes a plurality of data transmission lines to be connected with a corresponding number of the second data signal lines, respectively, the plurality of data transmission lines being provided with a plurality of first connection points and a plurality of second connection points, respectively, The plurality of first connection points are located in the second sub-display area, the plurality of second connection points are located in the first sub-display area, the plurality of first connection points are located closer to the edge of the second sub-display area away from the first sub-display area and away from the binding edge as the corresponding second data signal line is located further away from the second sub-display area, the plurality of second connection points are located farther from the boundary line between the first sub-display area and the second sub-display area and away from the binding edge as the corresponding second data signal line is located further away from the second sub-display area, The area that first transmission line is located is first fan-out district, the area that the second transmission line is located is the second fan-out district in first fan-out district, the length of the first transmission line of many data transmission lines is along keeping away from the direction of binding edge increases in proper order in the second fan-out district, the length of the second transmission line of many data transmission lines is along keeping away from the direction of the boundary line between first sub-display area with the second sub-display area increases in proper order.
4. 4. The display substrate of claim 3, wherein a first transmission line of the plurality of data transmission lines is arranged along the first direction and a second transmission line of the plurality of data transmission lines is arranged along the second direction.
5. 5. The display substrate of claim 3, further comprising a first connection line located at the first fan-out region and extending in the first direction, the first connection line being disconnected from the data transmission line; the display substrate comprises a first source drain metal layer and a second source drain metal layer, and the first source drain metal layer is positioned between the second source drain metal layer and the substrate; the display substrate further comprises a first power supply voltage lead, the first transmission line is positioned on the first source-drain metal layer, and the second data signal line and at least part of the first power supply voltage lead are positioned on the second source-drain metal layer; The first connection line is electrically connected to the first power supply voltage lead configured to provide a high level signal.
6. 6. The display substrate according to claim 5, wherein the second transmission sub-layer includes a plurality of sub-portions arranged at intervals in the first direction, each of the sub-portions being provided with a contact pad at least one end in the first direction; The contact pad and the second via at least partially overlap in a direction perpendicular to the substrate base plate, so that the contact pad is electrically connected with the first source drain metal layer through the second via.
7. 7. The display substrate of claim 5, wherein the first connection line comprises a first portion and a second portion electrically connected; the first part is positioned on the first source-drain metal layer, the second part is positioned on the second source-drain metal layer, and the orthographic projection of the first part on the substrate overlaps with the orthographic projection of the second part on the substrate.
8. 8. The display substrate according to claim 7, wherein the first portion includes a connection body portion and a first connection portion connected to at least one side of the connection body portion in the second direction, the first connection portion being electrically connected to the first power supply voltage lead.
9. 9. The display substrate according to claim 5, wherein an extending direction of at least part of the first connection lines is on the same line as an extending direction of at least part of the second transmission lines; The two ends of the first connecting wire between two adjacent first transmission wires in the first direction are disconnected with a corresponding first transmission wire through a first fracture; The first connection line and the second transmission line adjacent in the first direction are disconnected from each other by the second break.
10. 10. The display substrate of claim 5, further comprising a drive transistor and a power control transistor, a first pole of the power control transistor being electrically connected to the first power supply voltage lead, a second pole of the power control transistor being electrically connected to the first pole of the drive transistor.
11. 11. The display substrate of claim 7, further comprising a second connection line located in the second fan-out region and extending in the second direction, the second connection line being disconnected from the data transmission line; The display substrate further comprises a gate metal layer, wherein the gate metal layer is positioned between the substrate and the first source drain metal layer; the first transmission line and the second connection line are positioned on the first source-drain metal layer, the second data signal line is positioned on the second source-drain metal layer, and the gate metal layer further comprises a plurality of initialization signal lines which extend along the second direction and are arranged along the first direction; the second connecting wire is electrically connected with the initialization signal wire; the second connecting lines and the first transmission lines adjacent to each other in the second direction are disconnected with each other through a third fracture, and two ends of the second connecting lines between the two adjacent second transmission lines in the second direction are disconnected with the second transmission lines through fourth fractures respectively.
12. 12. The display substrate of claim 11, wherein the gate metal layer comprises a first gate metal layer, the initialization signal line comprises a first initialization signal line located at the first gate metal layer and extending in a first direction, and the second connection line comprises a second connection portion extending in the first direction toward a side away from the bonding region, the second connection portion at least partially overlapping the first initialization signal line in a direction perpendicular to the substrate, the second connection portion being electrically connected to the first initialization signal line.
13. 13. The display substrate of claim 12, wherein at least one of the third and fourth fractures at least partially overlaps the first initialization signal line in a direction perpendicular to the substrate.
14. 14. The display substrate of claim 11, wherein the second source drain metal layer further comprises a plurality of initialization compensation lines arranged along the second direction, each of the initialization compensation lines extending along the first direction and disposed between two adjacent first power supply voltage leads, the initialization compensation lines being electrically connected to the initialization signal lines; The second transmission line is positioned between two adjacent second data signal lines, and the first power supply voltage lead is positioned on one side of the second data signal line away from the second transmission line.
15. 15. The display substrate of claim 14, wherein the subpixel comprises a compensation transistor and a first reset transistor, a first pole of the compensation transistor is electrically connected to a second pole of the drive transistor, a second pole of the compensation transistor is electrically connected to a gate of the drive transistor, a first pole of the first reset transistor is electrically connected to the corresponding first initialization signal line, and a second pole of the first reset transistor is electrically connected to the second pole of the drive transistor.
16. 16. The display substrate according to claim 15, wherein the gate metal layer comprises a second gate metal layer comprising a plurality of second initialization signal lines and a plurality of third initialization signal lines extending along the second direction and arranged in the first direction; One of the second initialization signal line and the third initialization signal line is electrically connected to the corresponding second connection line.
17. 17. The display substrate according to claim 16, wherein the second connection line is electrically connected to the second initialization signal line, the second connection line includes a third connection portion extending toward a side away from the bonding region in the first direction, and one of the second initialization signal line and the third initialization signal line is electrically connected to the third connection portion.
18. 18. The display substrate of claim 16, wherein the initialization compensation line includes a first initialization compensation line, a second initialization compensation line, and a third initialization compensation line at the second source drain metal layer, the first initialization compensation line being electrically connected to the first initialization signal line, the second initialization compensation line being electrically connected to the second initialization signal line, the third initialization compensation line being electrically connected to the third initialization signal line; the first initialization compensation line, the second initialization compensation line and the third initialization compensation line are sequentially arranged along the second direction.
19. 19. The display substrate according to claim 16, wherein the sub-pixel includes a second reset transistor and a light emitting element, a first electrode of the second reset transistor is electrically connected to the corresponding second initialization signal line, and a second electrode of the second reset transistor is electrically connected to an anode of the light emitting element.
20. 20. The display substrate of claim 19, further comprising a second reset signal line, the gate of the first reset transistor being coupled to the corresponding second reset signal line, the second reset signal line being disposed different from the second initialization signal line and at least partially overlapping in a direction perpendicular to the substrate; The first fracture includes a first sub-mouth and a second sub-mouth opposite in the first direction, the first sub-mouth being further from the binding edge than the second sub-mouth; The first sub-port at least partially overlaps the second reset signal line in a direction perpendicular to the substrate base plate; At least one of the second sub-aperture and the second break at least partially overlaps with an anode of the light emitting element in a direction perpendicular to the substrate base plate.

Description

Display substrate and display device Technical Field At least one embodiment of the present disclosure relates to a display substrate and a display device. Background With the continuous pursuit of visual effects of display products, high resolution (PPI, pixels Per Inch) and narrow frame are gradually becoming the development trend of Organic Light Emitting Diode (OLED) display products. Disclosure of Invention At least one embodiment of the present disclosure provides a display substrate and a display device. The display substrate comprises a display area and a binding area which is positioned on one side of the display area along a first direction, wherein the size of the display area along a second direction perpendicular to the first direction is larger than that of the binding area along the second direction, the edge of the display area, which is close to the binding area, is a binding edge, the display area comprises a first sub-display area which is at least partially overlapped with the binding area along the first direction, and a second sub-display area which is positioned on at least one side of the first sub-display area and is not overlapped with the binding area along the first direction, a plurality of data signal lines which are at least partially positioned in the display area, extend along the first direction and are arranged along the second direction, the plurality of data signal lines comprise a first data signal line positioned in the first sub-display area and a second data signal line positioned in the second sub-display area, a data transmission line which is connected with the second data signal line and is at least partially overlapped with the binding area along the first direction, the first transmission line extends to the first transmission substrate, the first transmission line further comprises a first transmission line and a second transmission substrate, the first transmission line extends along the first transmission substrate and the first transmission line extends along the first direction, the first transmission substrate further comprises a first transmission line and the first transmission substrate, the first transmission line extends along the first transmission line and the first transmission substrate, the second end of the first transmission line is connected with one end of the second transmission line through a first via hole in the insulating layer to form a second connection point, the first connection point and the second connection point are both located in the display area, and the second end of the first transmission line and the first via hole are at least partially overlapped in a direction perpendicular to the substrate base plate. For example, according to at least one embodiment of the present disclosure, the data signal line is disposed in different layers from the first transmission line, the second transmission line includes a first transmission sub-layer and a second transmission sub-layer, the first transmission sub-layer is disposed in the same layer as the first transmission line, the second transmission sub-layer is disposed in the same layer as the data signal line, the first transmission sub-layer and the second transmission sub-layer are electrically connected through a second via hole in the insulating layer, a center line distance between a front projection of the second via hole on the substrate and a front projection of the first via hole on the substrate is a first distance, a distance between a front projection of the second via hole on the substrate and a front projection of the first transmission line on the substrate in the first direction is a second distance, and a ratio of the first distance to the second distance is 0.9-1.1. For example, according to at least one embodiment of the present disclosure, the data transmission line includes a plurality of data transmission lines to be connected with a corresponding number of second data signal lines, the plurality of data transmission lines are correspondingly provided with a plurality of first connection points and a plurality of second connection points, the plurality of first connection points are located in the second sub-display area, the plurality of second connection points are located in the first sub-display area, the plurality of first connection points are located away from the first sub-display area along with the corresponding second data signal lines, the plurality of first connection points are located closer to the edge of the second sub-display area away from the first sub-display area and away from the bonding edge, the plurality of second connection points are located away from the boundary line between the first sub-display area and the second sub-display area along with the corresponding second data signal lines, the area is located in the first fan-out area, the area is located in the second fan-out area along with the second data signal lines, the length o