Touch structure, touch display panel, and display device
A touch structure, a touch display panel, and a display device are provided, which relate to the field of touch technology. The touch structure includes first touch electrodes and second touch electrodes. The first touch electrode includes first electrode blocks and transfer bridges. The second touch electrode includes second electrode blocks. The first and second touch electrodes are mesh structures. Grid lines of the first and second electrode blocks are channel lines, and the channel lines forming boundaries of the first electrode block are first boundary channel lines. Grid lines of the transfer bridge are transfer lines. The transfer bridge includes an opening part and a bridge part connected to the opening part. The opening part is connected to the first electrode block through a via hole. Some transfer lines are boundary transfer lines. The boundary transfer lines are overlapped with some first boundary channel lines.
1. A touch structure, provided on a side of a display substrate, and comprising: a plurality of first touch electrodes and a plurality of second touch electrodes, wherein
the first touch electrodes are arranged at intervals along a row direction, and one of the first touch electrodes comprises a plurality of first electrode blocks arranged at intervals along a column direction and transfer bridges connecting two adjacent ones of the first electrode blocks;
the second touch electrodes are arranged at intervals along the column direction, and one of the second touch electrodes comprises a plurality of second electrode blocks connected in series along the row direction;
one of the transfer bridges is intersected with one of the second touch electrodes, the first electrode block and the second electrode block are located on a same electrode layer and arranged at intervals, the transfer bridge is located on a side of the electrode layer, and an insulation layer is provided between the transfer bridge and the electrode layer;
the first touch electrode and the second touch electrode are mesh structures formed by a plurality of grid lines, grid lines of the first electrode block and the second electrode block are channel lines, the channel lines forming boundaries of the first electrode block are first boundary channel line, and grid lines of the transfer bridge are transfer lines;
the transfer bridge comprises at least two opening parts and a bridge part connecting the opening parts, the opening part and the first electrode block are connected through a via hole penetrating the insulation layer, and the bridge part is intersected with the second touch electrode;
some of the transfer lines of the opening part are boundary transfer lines, and the boundary transfer lines overlap with some of the first boundary channel lines;
the transfer line and the channel line overlapping with each other extend in a same direction; and
among the boundary transfer line and the first boundary channel line overlapping with each other, one side of the boundary transfer line is located on a side of the first boundary channel line close to the adjacent second electrode block, and the other side of the boundary transfer line is located between both sides of the first boundary channel line.
2. The touch structure according to claim 1 , wherein
at least some adjacent transfer lines in the opening part are connected through a transfer intersection part, and at least some of the transfer intersection parts are connected to the boundary transfer line;
at least some adjacent channel lines in the first electrode block are connected through a channel intersection part, and at least some of the channel intersection parts are connected to the boundary channel line;
the transfer intersection parts and the channel intersection parts overlap with each other in a one-to-one correspondence, and the transfer intersection part and the channel intersection part overlapping with each other are connected through the via holes; and
among the transfer intersection part and the channel intersection part overlapping with each other, a boundary of the transfer intersection part is located inside a boundary of the channel intersection part.
3. The touch structure according to claim 2 , wherein
the mesh structure has mesh holes surrounded by the grid lines;
the transfer lines of the opening part surround a mesh hole, and two adjacent transfer lines are connected by a transfer intersection part; and
two transfer lines of the opening part are the boundary transfer lines, and the bridge part is only connected to the transfer intersection part connecting two boundary transfer lines.
4. The touch structure according to claim 3 , wherein
the opening part has four transfer lines and four transfer intersection parts, mesh holes surrounded by the four transfer lines and the four transfer intersection parts are in quadrangular shapes, and the four transfer intersection parts are provided with the via holes.
5. The touch structure according to claim 3 , wherein
among the boundary transfer line and the first boundary channel line overlapping with each other, a distance between one side of the boundary transfer line close to an adjacent second electrode block and a side of the first boundary channel line close to an adjacent second electrode block is a first distance, and a distance between the other side of the boundary transfer line and a side of the first boundary channel line away from an adjacent second electrode block is a second distance; and
the first distance is equal to the second distance.
6. The touch structure according to claim 5 , wherein
among the transfer line not serving as the boundary transfer line in the opening part and the channel line overlapping with the transfer line, one side of a boundary of the transfer line is located on a side of the channel line away from an adjacent second electrode block, and the other side of the transfer line is located between both sides of the channel line.
7. The touch structure according to claim 6 , wherein
among the transfer line not serving as the boundary transfer line in the opening part and the channel line overlapping with the transfer line, a distance between one side of the boundary of the transfer line and a side of the channel line away from the second electrode block is a third distance, and a distance between the other side of the transfer line and a side of the channel line close to an adjacent second electrode block is a fourth distance; and
the third distance is equal to the fourth distance.
8. The touch structure according to claim 7 , wherein the first distance, the second distance, the third distance, and the fourth distance are equal.
9. The touch structure according to claim 7 , wherein at least one of the first distance and the third distance is 1.2 μm.
10. The touch structure according to claim 2 , wherein
the mesh structure has mesh holes surrounded by the grid lines; and
the transfer lines of the opening part surround a mesh hole, and two adjacent transfer lines are connected through a transfer intersection part;
there is only one transfer line serving as the boundary transfer line in the opening part; and
the bridge part is connected to the transfer intersection part connected with both ends of the boundary transfer line.
11. The touch structure according to claim 10 , wherein, among the opening part and the first electrode block connected with each other,
in the first boundary channel lines of the first electrode block, the first boundary channel lines located on both sides of the opening part and adjacent to the opening part are disconnected from the opening part.
12. The touch structure according to claim 10 , wherein
the opening part has four transfer lines and four transfer intersection parts, mesh holes surrounded by the four transfer lines and the four transfer intersection parts are in quadrangular shapes, and the four transfer intersection parts are provided with the via holes.
13. The touch structure according to claim 10 , wherein
among the boundary transfer line and the first boundary channel line overlapping with each other, a distance between one side of the boundary transfer line close to an adjacent second electrode block and a side of the first boundary channel line close to an adjacent second electrode block is a first distance, and a distance between the other side of the boundary transfer line and a side of the first boundary channel line away from an adjacent second electrode block is a second distance; and
the first distance is equal to the second distance.
14. The touch structure according to claim 2 , wherein
among the opening part and the first electrode block connected with each other, the transfer lines of the opening part are the boundary transfer lines, and at least two adjacent boundary transfer lines are connected through a transfer intersection part.
15. The touch structure according to claim 14 , wherein
the opening part has four transfer lines and four transfer intersection parts, the four transfer lines extend along a trajectory of the first boundary channel line, and the four transfer intersection parts are provided with the via holes.
16. The touch structure according to claim 1 , wherein
the channel line forming a boundary of the second electrode block is a second boundary channel line; and
among the second touch electrode and the bridge part intersecting with the second touch electrode, the second boundary channel lines located on both sides of the bridge part and adjacent to the bridge part are disconnected from the bridge part.
17. The touch structure according to claim 16 , wherein
some transfer lines of the bridge part overlap with the second boundary channel lines in a one-to-one correspondence; and
among the transfer line and the second boundary channel line overlapping with each other, one side of the transfer line is located on a side of the second boundary channel line close to an adjacent first electrode block, and the other side of the transfer line is located between both sides of the second boundary channel line.
18. The touch structure according to claim 17 , wherein
among the transfer line and the second boundary channel line overlapping with each other, a distance between one side of a boundary of the transfer line and a side of the second boundary channel line close to the first electrode block is a fifth distance, and a distance between the other side of the transfer line and a side of the second boundary channel line away from an adjacent first electrode block is a sixth distance; and
the fifth distance is equal to the sixth distance.
19. A touch display panel, comprising:
a display substrate; and
a touch structure, provided on a side of a display substrate, and comprising: a plurality of first touch electrodes and a plurality of second touch electrodes, wherein
the first touch electrodes are arranged at intervals along a row direction, and one of the first touch electrodes comprises a plurality of first electrode blocks arranged at intervals along a column direction and transfer bridges connecting two adjacent ones of the first electrode blocks;
the second touch electrodes are arranged at intervals along the column direction, and one of the second touch electrodes comprises a plurality of second electrode blocks connected in series along the row direction;
one of the transfer bridges is intersected with one of the second touch electrodes, the first electrode block and the second electrode block are located on a same electrode layer and arranged at intervals, the transfer bridge is located on a side of the electrode layer, and an insulation layer is provided between the transfer bridge and the electrode layer;
the first touch electrode and the second touch electrode are mesh structures formed by a plurality of grid lines, grid lines of the first electrode block and the second electrode block are channel lines, the channel lines forming boundaries of the first electrode block are first boundary channel line, and grid lines of the transfer bridge are transfer lines;
the transfer bridge comprises at least two opening parts and a bridge part connecting the opening parts, the opening part and the first electrode block are connected through a via hole penetrating the insulation layer, and the bridge part is intersected with the second touch electrode;
some of the transfer lines of the opening part are boundary transfer lines, and the boundary transfer lines overlap with some of the first boundary channel lines;
the transfer line and the channel line overlapping with each other extend in a same direction;
among the boundary transfer line and the first boundary channel line overlapping with each other, one side of the boundary transfer line is located on a side of the first boundary channel line close to the adjacent second electrode block, and the other side of the boundary transfer line is located between both sides of the first boundary channel line; and
the transfer bridges are provided on a side of the display substrate, the insulation layer covers the transfer bridges, and the electrode layer is provided on a side of the insulation layer away from the display substrate.
20. A display device, comprising a touch display panel, comprising:
a display substrate; and
a touch structure, provided on a side of a display substrate, and comprising: a plurality of first touch electrodes and a plurality of second touch electrodes, wherein
the first touch electrodes are arranged at intervals along a row direction, and one of the first touch electrodes comprises a plurality of first electrode blocks arranged at intervals along a column direction and transfer bridges connecting two adjacent ones of the first electrode blocks;
the second touch electrodes are arranged at intervals along the column direction, and one of the second touch electrodes comprises a plurality of second electrode blocks connected in series along the row direction;
one of the transfer bridges is intersected with one of the second touch electrodes, the first electrode block and the second electrode block are located on a same electrode layer and arranged at intervals, the transfer bridge is located on a side of the electrode layer, and an insulation layer is provided between the transfer bridge and the electrode layer;
the first touch electrode and the second touch electrode are mesh structures formed by a plurality of grid lines, grid lines of the first electrode block and the second electrode block are channel lines, the channel lines forming boundaries of the first electrode block are first boundary channel line, and grid lines of the transfer bridge are transfer lines;
the transfer bridge comprises at least two opening parts and a bridge part connecting the opening parts, the opening part and the first electrode block are connected through a via hole penetrating the insulation layer, and the bridge part is intersected with the second touch electrode;
some of the transfer lines of the opening part are boundary transfer lines, and the boundary transfer lines overlap with some of the first boundary channel lines;
the transfer line and the channel line overlapping with each other extend in a same direction;
among the boundary transfer line and the first boundary channel line overlapping with each other, one side of the boundary transfer line is located on a side of the first boundary channel line close to the adjacent second electrode block, and the other side of the boundary transfer line is located between both sides of the first boundary channel line; and
the transfer bridges are provided on a side of the display substrate, the insulation layer covers the transfer bridges, and the electrode layer is provided on a side of the insulation layer away from the display substrate.