Search

EP-4447637-B1 - DISPLAY SUBSTRATE AND DISPLAY DEVICE

EP4447637B1EP 4447637 B1EP4447637 B1EP 4447637B1EP-4447637-B1

Inventors

  • WANG, MENGQI
  • YU, Ziyang
  • JIANG, ZHILIANG
  • HU, MING
  • CHEN, FEI

Dates

Publication Date
20260506
Application Date
20230223

Claims (15)

  1. A display substrate (100) having a display region (AA) and a fan-out region (BB), the fan-out region (BB) being adjacent to an edge of the display region (AA), the display substrate (100) comprising: a substrate (102); and a plurality of conductive layers (103) located on a same side of the substrate (102), the plurality of conductive layers (103) being stacked; the plurality of conductive layers (103) including: a plurality of data lines (110), wherein the plurality of data lines (110) are arranged at intervals along a first direction (X), and the plurality of data lines (110) all extend along a second direction (Y), the second direction (Y) intersecting the first direction (X); the plurality of data lines (110) include a plurality of first data lines (111) and a plurality of second data lines (112), the plurality of first data lines (111) are located in two edge regions (AA1) of the display region (AA) along the first direction (X), and the plurality of second data lines (112) are located in a central region (AA2) of the display region (AA) along the first direction (X); a plurality of connection lines (120), wherein a first end of a connection line (120) of the plurality of connection lines (120) is located in an edge region (AA1) of the two edge regions (AA1) and is electrically connected to a first data line (111) of the plurality of first data lines (111), and a second end of the connection line (120) extends to a boundary between the central region (AA2) and the fan-out region (BB); at least one of the plurality of connection lines (120) crosses at least one data line (110), and is insulated from the at least one data line (110) that the at least one of the plurality of connection lines (120) crosses; a second end of the at least one of the plurality of connection lines (120) is located between two adjacent second data lines (112); and a plurality of fan-out lines (130) located in the fan-out region (BB), wherein the plurality of fan-out lines (130) include a plurality of first fan-out lines (131) and a plurality of second fan-out lines (132); a first fan-out line (131) of the plurality of first fan-out lines (131) is electrically connected to the second end of the connection line (120), and a second fan-out line (132) of the plurality of second fan-out lines (132) is electrically connected to an end, proximate to the fan-out region (BB), of a data line (110) that is not electrically connected to the connection line (120); wherein the display substrate (100) further has a bending region (CC) and a chip on panel, COP, region that are sequentially away from the display region (AA); the fan-out region (BB) includes a first fan-out region (BB1) and a second fan-out region (BB2), the first fan-out region (BB1) is located between the display region (AA) and the bending region (CC), and the second fan-out region (BB2) is located between the bending region (CC) and the COP region; the first fan-out line (131) includes a transfer line (134), and the transfer line (134) is located in the second fan-out region (BB2); the transfer line (134) crosses at least one of the plurality of second fan-out lines (132), so that an arrangement order of ends of the plurality of fan-out lines (130) away from the display region (AA) along the first direction (X) is the same as an arrangement order of the plurality of data lines (110) along the first direction (X); wherein the transfer line (134) includes a main body (1340) and two connection ends (G1, G2), and the main body (1340) is located on a side of the two connection ends (G1, G2) proximate to the display region (AA).
  2. The display substrate (100) according to claim 1, wherein the display substrate (100) further has a cell test, CT, region located between the bending region (CC) and the COP region; and the second fan-out region (BB2) is located between the CT region and the COP region.
  3. The display substrate (100) according to claim 1 or 2, wherein the transfer line (134) is U-shaped or approximately U-shaped.
  4. The display substrate (100) according to any one of claims 1 to 3, wherein a central axis (Q) of the display substrate (100) extending along the second direction (Y) is defined as a first central axis (Q); a region located on a side of the first central axis (Q) in the second fan-out region (BB2) is a fan-out sub-region (BBZ); in the fan-out sub-region (BBZ): a plurality of transfer lines (134) are arranged radially; wherein in two adjacent transfer lines (134), an outer transfer line (134) is arranged around an inner transfer line (134).
  5. The display substrate (100) according to claim 4, wherein the two adjacent transfer lines (134) are located in different conductive layers (103).
  6. The display substrate (100) according to any one of claims 1 to 5, wherein a central axis (Q) of the display substrate (100) extending along the second direction (Y) is defined as a first central axis (Q); a region located on a side of the first central axis (Q) in the second fan-out region (BB2) is a fan-out sub-region (BBZ); in the fan-out sub-region (BBZ): the first fan-out line (131) further includes a first line segment (1311) and a second line segment (1312) that are sequentially away from the display region (AA) and electrically connected to each other; the first line segment (1311) is gradually close to the first central axis (Q) from an end thereof proximate to the display region (AA) to an end thereof away from the display region (AA); the second line segment (1312) is parallel to the first central axis (Q); the second fan-out line (132) includes a third line segment (1321) and a fourth line segment (1322) that are sequentially away from the display region (AA) and electrically connected to each other; the third line segment (1321) is gradually close to the first central axis (Q) from an end thereof proximate to the display region (AA) to an end thereof away from the display region (AA); the fourth line segment (1322) is parallel to the first central axis (Q); wherein a connection end (G1) of the transfer line (134) proximate to the first central axis (Q) is electrically connected to an end of the second line segment (1312) away from the first line segment (1311).
  7. The display substrate (100) according to claim 6, wherein in the fan-out sub-region (BBZ): a plurality of first line segments (1311) and a plurality of third line segments (1321) are alternately arranged; a fitting straight line (L) defined by an end of the first line segment (1311) away from the display region (AA) and an end of the third line segment (1321) away from the display region (AA) is gradually close to the display region (AA) from an end thereof away from the first central axis (Q) to an end thereof proximate to the first central axis (Q).
  8. The display substrate (100) according to claim 6 or 7, wherein in the fan-out sub-region (BBZ): second line segments (1312) that are directly adjacent among the plurality of second line segments (1312) are in a same group; and ends (a1), away from the display region (AA), of the second line segments (1312) in the same group are staggered along the first direction (X).
  9. The display substrate (100) according to any one of claims 6 to 8, wherein in the fan-out sub-region (BBZ): in two adjacent second line segments (1312), a length of a second line segment (1312) proximate to the first central axis (Q) is less than a length of a second line segment (1312) away from the first central axis (Q); in two adjacent transfer lines (134), a connection end (G1) of a transfer line (134) proximate to the first central axis (Q) for connecting a second line segment (1312) is closer to the display region (AA) related to a connection end (G2) of a transfer line (134) away from the first central axis (Q) for connecting a second line segment (1312).
  10. The display substrate (100) according to any one of claims 6 to 9, wherein the main body (1340) includes a first transfer segment (1341); the first transfer segment (1341) is connected to a connection end (G1) of the transfer line (134) that is connected to the second line segment (1312); an orthographic projection of the first transfer segment (1341) on the substrate (102) overlaps or approximately overlaps with an orthographic projection of the corresponding connected second line segment (1312) on the substrate (102).
  11. The display substrate (100) according to claim 10, wherein the main body (1340) further includes a second transfer segment (1342) that is connected to the first transfer segment (1341) and a third transfer segment (1343) that is connected to the second transfer segment (1342); the plurality of conductive layers (103) further include: an isolation block (140) located on a side of the first line segment (1311) and the third line segment (1321) away from the substrate (102), the isolation block (140) covering the first line segment (1311) and the third line segment (1321); wherein the transfer line (134) is located on a side of the isolation block (140) away from the substrate (102); an orthographic projection of the second transfer segment (1342) on the substrate (102) is located within an orthographic projection of the isolation block (140) on the substrate (102); and orthographic projections of the first transfer segment (1341) and the third transfer segment (1343) on the substrate (102) are located outside the orthographic projection of the isolation block (140) on the substrate (102).
  12. The display substrate (100) according to claim 11, wherein the isolation block (140) is arranged in at least one of the following ways: the isolation block (140) is electrically connected to a voltage signal line (141); or the isolation block (140) includes a first border (E1), and the first border (E1) coincides or approximately coincides with a fitting straight line (L) defined by an end of the first line segment (1311) away from the display region (AA) and an end of the third line segment (1321) away from the display region (AA); or the isolation block (140) includes a second border (E2), and the second border (E2) coincides or approximately coincides with a line segment farthest away from the first central axis (Q) among all first line segments (1311) and all third line segments (1321); or the isolation block (140) includes the first border (E1) and the second border (E2), and an angle between the first border (E1) and the second border (E2) is an obtuse angle; or the orthographic projection of the isolation block (140) on the substrate (102) is triangular or approximately triangular.
  13. The display substrate (100) according to claim 11 or 12, wherein the plurality of conductive layers (103) include: at least two gate metal layers (Gate); and at least two source-drain metal layers (SD) located on a side of the at least two gate metal layers (Gate) away from the substrate (102); wherein the first line segment (1311), the second line segment (1312), the third line segment (1321) and the fourth line segment (1322) are located in the at least two gate metal layers (Gate), and the isolation block (140) is located in a source-drain metal layer (SD1) close to the substrate (102) in the at least two layer source-drain metal layers (SD), and the transfer line (134) is located in a source-drain metal layer (SD2) far away from the substrate (102) in the at least two source-drain metal layers (SD).
  14. A display apparatus (200), characterized by comprising the display substrate (100) according to any one of claims 1 to 13.
  15. The display apparatus (200) according to claim 14, further comprising an under-screen camera and an under-screen fingerprint recognition sensor.

Description

This application claims priorities to Chinese Patent Application No. 202210880462.1, filed on July 25, 2022, and International Patent Application No. PCT/CN2022/089120, filed on April 25, 2022. TECHNICAL FIELD The present disclosure relates to the field of display technologies, and in particular, to a display substrate and a display apparatus. BACKGROUND At present, organic light-emitting diode (OLED) display apparatuses have been widely used due to their properties such as self-luminescence, fast response, high contrast ratio, wide viewing angle, and the fact that the display apparatuses are capable of being fabricated on flexible substrates. The OLED display device includes sub-pixels, each sub-pixel includes a pixel driving circuit and a light-emitting device, and the pixel driving circuit drives the light-emitting device to emit light, thereby achieving US 2020/312252 A1 and CN 113436541 A show an arrangement of data lines, connection lines and fanout lines in OLED displays. SUMMARY In an aspect, a display substrate is provided. The display substrate has a display region and a fan-out region, and the fan-out region is adjacent to an edge of the display region. The display substrate includes a substrate and a plurality of conductive layers. The plurality of conductive layers are located on a same side of the substrate. The plurality of conductive layers are stacked. The plurality of conductive layers include: a plurality of data lines, a plurality of connection lines and a plurality of fan-out lines. The plurality of data lines are arranged at intervals along a first direction, and the plurality of data lines all extend along a second direction, the second direction intersecting the first direction; the plurality of data lines include a plurality of first data lines and a plurality of second data lines, the plurality of first data lines are located in two edge regions of the display region along the first direction, and the plurality of second data lines are located in a central region of the display region along the first direction. A first end of a connection line is located in an edge region and is electrically connected to a first data line, and a second end of the connection line extends to a boundary between the central region and the fan-out region; at least one of the connection lines crosses at least one data line, and is insulated from the at least one data line that the at least one of the connection lines crosses; a second end of the at least one of the connection lines is located between two adjacent second data lines. The plurality of fan-out lines are located in the fan-out region; the plurality of fan-out lines include a plurality of first fan-out lines and a plurality of second fan-out lines; a first fan-out line is electrically connected to the second end of the connection line, and a second fan-out line is electrically connected to an end, proximate to the fan-out region, of a data line that is not electrically connected to the connection line. The display substrate further has a bending region and a chip on panel region that are sequentially away from the display region; the fan-out region includes a first fan-out region and a second fan-out region, the first fan-out region is located between the display region and the bending region, and the second fan-out region is located between the bending region and the chip on panel region. The first fan-out line includes a transfer line, and the transfer line is located in the second fan-out region; the transfer line crosses at least one of the second fan-out lines, so that an arrangement order of ends of the plurality of fan-out lines away from the display region along the first direction is the same as an arrangement order of the plurality of data lines along the first direction. The transfer line includes a main body and two connection ends, and the main body is located on a side of the two connection ends proximate to the display region. In some embodiments, the display substrate further has a cell test region located between the bending region and the chip on panel region; and the second fan-out region is located between the cell test region and the chip on panel region. In some embodiments, the transfer line is U-shaped or approximately U-shaped. In some embodiments, a central axis of the display substrate extending along the second direction is defined as a first central axis; a region located on a side of the first central axis in the second fan-out region is a fan-out sub-region. In the fan-out sub-region, a plurality of transfer lines are arranged radially, and in two adjacent transfer lines, an outer transfer line is arranged around an inner transfer line. In some embodiments, the two adjacent transfer lines are located in different conductive layers. In some embodiments, a central axis of the display substrate extending along the second direction is defined as a first central axis; a region located on a side of the first central ax