Array substrate, touch display device
An array substrate and a touch display device are provided. The array substrate includes: a base substrate including a plurality of pixels; a pixel electrode; a touch sensing block including a plurality of touch electrodes; touch signal lines, each touch sensing block being connected to at least one touch signal line; a first connection line, two adjacent rows of touch electrodes in each touch sensing block being connected through the first connection line; a second connection line that does not overlap with the touch signal line, the pixel electrode being connected to the TFT through the second connection line. The pixel structure is a Z-architecture pixel. Every four adjacent pixels are a repeating unit, and each repeating unit includes four adjacent sub-pixels arranged in two rows and two columns, the pixel electrodes of two diagonally opposite sub-pixels are respectively connected to the TFT through the second connection line, and the touch electrodes of the other two diagonally opposite sub-pixels are connected through the first connection line.
1 . An array substrate comprising:
a base substrate comprising a plurality of pixels arranged in an array, the plurality of pixels comprising a plurality of sub-pixels arranged in an array, each of the plurality of sub-pixels comprising a pixel electrode, a touch electrode, and a thin film transistor;
a plurality of touch sensing blocks on the base substrate and electrically insulated from each other, each of the plurality of touch sensing blocks comprising a plurality of touch electrodes, the plurality of touch electrodes of each touch sensing block electrically connected to each other and arranged in an array;
a plurality of gate lines extending along a first direction, each row of sub-pixels being associated with two gate lines among the plurality of gate lines;
a plurality of touch signal lines and a plurality of data lines extending along a second direction, the touch signal lines and the data lines being in a same layer, each touch sensing block being electrically connected to at least one of the plurality of touch signal lines, the first direction intersecting with the second direction;
a first connection line, two adjacent rows of touch electrodes in each touch sensing block being electrically connected through the first connection line; and
a second connection line, each of at least a part of a plurality of pixel electrodes being electrically connected to a drain of a corresponding thin film transistor through the second connection line, an orthographic projection of the second connection line on the base substrate not overlapping with an orthographic projection of a respective one of the touch signal lines on the base substrate,
wherein a gate of the thin film transistor of each sub-pixel is electrically connected to a respective one of the gate lines, the drain of the thin film transistor of each sub-pixel is electrically connected to the pixel electrode of the sub-pixel, a source of the thin film transistor of each sub-pixel is electrically connected to a respective one of the data lines, every two adjacent sub-pixels in a same row of sub-pixels form a unit group, the sources of the thin film transistors of each unit group are electrically connected to a same data line, the gates of the thin film transistors of each unit group are electrically connected to different gate lines, respectively, and the sources of the thin film transistors of two adjacent sub-pixels in the same column of sub-pixels are electrically connected to different data lines, respectively, and
wherein every four adjacent pixels among the plurality of pixels form a repeating unit, each repeating unit comprises four adjacent sub-pixels that are arranged in two rows and two columns, the pixel electrodes of two sub-pixels among the four adjacent sub-pixels that are in different rows and diagonally opposite are respectively electrically connected to the drain of the corresponding thin film transistor through the second connection line, and the touch electrodes of the other two sub-pixels among the four adjacent sub-pixels that are in different rows and diagonally opposite are electrically connected through the first connection line.
2 . The array substrate according to claim 1 , further comprising a plurality of common connection lines extending along the first direction, wherein each of the plurality of common connection lines is arranged between two adjacent rows of sub-pixels, the individual touch electrodes in a same row of each touch sensing block are electrically connected to each other through the common connection line, and each common connection line is disconnected at an interval region between two adjacent touch sensing blocks.
3 . The array substrate according to claim 2 , wherein an orthographic projection of the first connection line on the base substrate partially overlaps with the orthographic projection of the touch signal line on the base substrate, and the first connection line is arranged between two adjacent rows of sub-pixels in each repeating unit.
4 . The array substrate according to claim 3 , wherein each repeating unit is further provided with a compensation line, an orthographic projection of the compensation line on the base substrate partially overlaps with the orthographic projection of the touch signal line on the base substrate, and the touch signal line overlapping with the compensation line and the touch signal line overlapping with the first connection line in each repeating unit are two different touch signal lines.
5 . The array substrate according to claim 4 , wherein the compensation line comprises a sub-section extending along the first direction, an orthographic projection of the sub-section on the base substrate partially overlaps with the orthographic projection of the touch signal line on the base substrate, and two opposite ends of the sub-section in the first direction both extend beyond the touch signal line.
6 . The array substrate according to claim 4 , wherein the orthographic projection of the compensation line on the base substrate does not overlap with orthographic projections of the gate line and the common connection line on the base substrate.
7 . The array substrate according to claim 4 , wherein a width of the compensation line is equal to a width of the first connection line.
8 . The array substrate according to claim 4 , wherein a portion where the orthographic projection of the compensation line on the base substrate overlaps with the orthographic projection of the touch signal line on the base substrate forms a second overlapping region, and areas of all the second overlapping regions are equal to each other.
9 . The array substrate according to claim 2 , wherein the data line is arranged at the interval region between any two adjacent touch sensing blocks along the first direction, a disconnected portion of the common connection line at the interval region is on a first side of the data line, a continuous portion of the common connection line comprises a first sub-section, a second sub-section, and a third sub-section that are sequentially connected, the first sub-section is on a second side of the data line, the third sub-section is on the first side of the data line, the second sub-section is between the first sub-section and the third sub-section, and an orthographic projection of the second sub-section on the base substrate falls within an orthographic projection of the data line on the base substrate.
10 . The array substrate according to claim 9 , wherein a length of the third sub-section along the first direction is greater than or equal to a first threshold.
11 . The array substrate according to claim 2 , further comprising a fourth connection line, wherein a first end of the fourth connection line is electrically connected to the touch electrode of one of any two adjacent touch sensing blocks along the second direction, a second end of the fourth connection line is disconnected from the touch electrode of the other of the any two adjacent touch sensing blocks along the second direction, so that the any two adjacent touch sensing blocks along the second direction are electrically insulated from each other.
12 . The array substrate according to claim 11 , wherein an orthographic projection of the fourth connection line on the base substrate spans an orthographic projection of two gate lines between the any two adjacent touch sensing blocks along the second direction on the base substrate, and a distance that the second end of the fourth connection line extends beyond one of the two gate lines that is closest to the second end is greater than or equal to a second threshold.
13 . The array substrate according to claim 1 , wherein an orthographic projection of the data line on the base substrate does not overlap with an orthographic projection of the touch electrode on the base substrate, and the orthographic projection of the touch signal line on the base substrate does not overlap with the orthographic projection of the touch electrode on the base substrate.
14 . The array substrate according to claim 13 , wherein,
one data line is arranged every two columns of sub-pixels, and each of at least a part of the plurality of data lines is arranged between two adjacent columns of sub-pixels; and
one touch signal line is arranged every two columns of sub-pixels, and each touch signal line is arranged between two adjacent columns of sub-pixels and between two adjacent data lines.
15 . The array substrate according to claim 14 , wherein the orthographic projection of the touch electrode in each sub-pixel on the base substrate at least partially overlaps with an orthographic projection of the pixel electrode in the sub-pixel on the base substrate,
for each data line and two columns of sub-pixels on both sides of the data line, a distance between the orthographic projection of the touch electrodes in each column of sub-pixels among the two columns of sub-pixels on the base substrate and the orthographic projection of the data line on the base substrate is a first distance, a distance between the orthographic projection of the pixel electrodes in each column of sub-pixels among the two columns of sub-pixels on the base substrate and the orthographic projection of the data line on the base substrate is a second distance, the second distance is greater than the first distance and a difference between the second distance and the first distance is greater than or equal to a third threshold.
16 . The array substrate according to claim 15 , wherein for each touch signal line and two columns of sub-pixels on both sides of the touch signal line, a distance between the orthographic projection of the touch electrodes in each column of sub-pixels among the two columns of sub-pixels on the base substrate and the orthographic projection of the touch signal line on the base substrate is a third distance, a distance between the orthographic projection of the pixel electrodes in each column of sub-pixels among the two columns of sub-pixels on the base substrate and the orthographic projection of the touch signal line on the base substrate is a fourth distance, the fourth distance is greater than the third distance and a difference between the fourth distance and the third distance is greater than or equal to the third threshold.
17 . The array substrate according to claim 1 , wherein the pixel electrode is on the base substrate, the gate line is on a side of the pixel electrode away from the base substrate, the data line and the touch signal line are on a side of the gate line away from the base substrate, the touch electrode and the first connection line are in a same layer and both are on a side of the data line away from the base substrate.
18 . The array substrate according to claim 17 , wherein an extending direction of the first connection line is different from an extending direction of the touch signal line, and an orthographic projection of the first connection line on the base substrate overlaps at most a part with the orthographic projection of the touch signal line on the base substrate.
19 . The array substrate according to claim 17 , wherein each touch sensing block is electrically connected to at least one of the plurality of touch signal lines through a via, and an orthographic projection of the via on the base substrate is between orthographic projections of two gate lines between two adjacent rows of sub-pixels on the base substrate.
20 . The array substrate according to claim 17 , wherein an extending direction of the first connection line is the same as an extending direction of the touch signal line, and an orthographic projection of the first connection line on the base substrate falls within the orthographic projection of the touch signal line on the base substrate.
21 . The array substrate according to claim 1 , further comprising a third connection line, wherein each of the part of the plurality of pixel electrodes is electrically connected to the drain of the corresponding thin film transistor through the second connection line, each of the remaining of the plurality of pixel electrodes is electrically connected to the drain of the corresponding thin film transistor through the third connection line, and an orthographic projection of the third connection line on the base substrate partially overlaps with the orthographic projection of the touch signal line on the base substrate.
22 . The array substrate according to claim 21 , wherein the orthographic projection of the third connection line on the base substrate does not overlap with an orthographic projection of the first connection line on the base substrate.
23 . The array substrate according to claim 21 , wherein a portion where the orthographic projection of the third connection line on the base substrate overlaps with the orthographic projection of the touch signal line on the base substrate forms a first overlapping region, and areas of all first overlapping regions are equal to each other.
24 . The array substrate according to claim 1 , wherein a width of the touch signal line is greater than a width of the data line.
25 . The array substrate according to claim 24 , wherein the touch signal line comprises a first part and a second part, and a width of the first part is smaller than a width of the second part.
26 . The array substrate according to claim 1 , wherein each pixel comprises a first sub-pixel, a second sub-pixel, and a third sub-pixel sequentially arranged along the first direction, the adjacent four pixels of each repeating unit are arranged in two rows and two columns and comprise a first pixel, a second pixel, a third pixel, and a fourth pixel, the first pixel and the second pixel are in a same row and the first pixel and the third pixel are in a same column, the third pixel and the fourth pixel are in a same row and the second pixel and the fourth pixel are in a same column,
the sources of the thin film transistors of the first sub-pixel and the second sub-pixel of the first pixel are electrically connected to a first data line among the plurality of data lines, the sources of the thin film transistors of the third sub-pixel of the first pixel and the first sub-pixel of the second pixel are electrically connected to a second data line among the plurality of data lines, the sources of the thin film transistors of the second sub-pixel and the third sub-pixel of the second pixel are electrically connected to a third data line among the plurality of data lines, the sources of the thin film transistors of the first sub-pixel and the second sub-pixel of the third pixel are electrically connected to the second data line, the sources of the thin film transistors of the third sub-pixel of the third pixel and the first sub-pixel of the fourth pixel are electrically connected to the third data line, and the sources of the thin film transistors of the second sub-pixel and the third sub-pixel of the fourth pixel are electrically connected to a fourth data line among the plurality of data lines.
27 . The array substrate according to claim 26 , wherein the gates of the thin film transistors of all first sub-pixels in the same row of pixels are electrically connected to a first gate line of the two gate lines, the gates of the thin film transistors of all second sub-pixels in the same row of pixels are electrically connected to a second gate line of the two gate lines, and the gates of the thin film transistors of the third sub-pixels of two adjacent pixels in the same row of pixels are electrically connected to the first gate line and the second gate line, respectively.
28 . The array substrate according to claim 1 , wherein an orthographic projection of the first connection line on the base substrate partially overlaps with the orthographic projection of the touch signal line on the base substrate, and an extending direction of the first connection line at an overlapping region is perpendicular to an extending direction of the touch signal line at the overlapping region.
29 . The array substrate according to claim 1 , wherein each touch sensing block is electrically connected to at least one of the plurality of touch signal lines through a via, and an orthographic projection of the via on the base substrate does not overlap with an orthographic projection of the first connection line on the base substrate.
30 . The array substrate according to claim 1 , further comprising a light-shielding layer on a side of the touch signal line and the data line away from the base substrate, wherein the light-shielding layer comprises a first light-shielding part and a second light-shielding part, an orthographic projection of the data line on the base substrate falls within an orthographic projection of the first light-shielding part on the base substrate, the orthographic projection of the touch signal line on the base substrate falls within an orthographic projection of the second light-shielding part on the base substrate, a width of the first light-shielding part along the first direction is a first width, a width of the second light-shielding part along the first direction is a second width, a width of each sub-pixel along the first direction is a third width, the first width, the second width, and the third width satisfy the following condition:
a ratio of an absolute value of a difference between the first width and the second width to twice the third width is less than or equal to 5%.
31 . The array substrate according to claim 1 , wherein a ratio of a number of the data lines to a number of the touch signal lines is 1:2, one data line is arranged every two columns of sub-pixels, two touch signal lines are arranged every two columns of sub-pixels, and the two touch signal lines are arranged between two adjacent columns of sub-pixels.
32 . The array substrate according to claim 1 , wherein the touch electrode is on the base substrate, the gate line is on a side of the touch electrode away from the base substrate, the data line and the touch signal line are on a side of the gate line away from the base substrate, and the pixel electrode and the first connection line are in a same layer and both are on a side of the data line away from the base substrate.
33 . The array substrate according to claim 1 , further comprising a liquid crystal layer, wherein the touch electrode and the pixel electrode are on a same side of the liquid crystal layer, and materials of the touch electrode and the pixel electrode comprise indium tin oxide.
34 . A touch display device comprising the array substrate according to claim 1 .