Touch display panel and display device

Abstract

A touch indicator array is provided. The touch indicator array comprises multiple first mesh electrodes and multiple second mesh electrodes. Each of the multiple first mesh electrodes comprises multiple first mesh blocks that are electrically connected sequentially along a first direction. Two adjacent first mesh blocks of the multiple first mesh blocks are electrically connected to each other by a respective first conductive bridge of multiple first conductive bridges. The multiple first conductive bridges are arranged in an array. The multiple first mesh blocks include boundary mesh blocks that border a truncated region where no touch structure is present. The touch indicator array includes a displaced conductive bridge that is offset from the array of multiple first conductive bridges.

Description

TECHNICAL FIELD

[0001] The present invention relates to display technology, particularly to a touch display panel and a display device. TECHNOLOGICAL BACKGROUND

[0002] Various types of touch panels have been developed. Examples of touch panels include one-glass solution (OGS) touch panels, on-cell touch panels, and in-cell touch panels. On-cell touch panels offer high touch accuracy. On-cell touch panels can be divided into single-layer on-cell (SLOC) and multi-layer on-cell (MLOC) touch panels. In particular, MLOC touch panels can achieve multi-point touch with superior touch accuracy and masking effects. DISCLOSURE OF THE INVENTION

[0003] In one aspect, the present disclosure provides a display panel comprising a plurality of first mesh electrodes and a plurality of second mesh electrodes; wherein each of the plurality of first mesh electrodes comprises a plurality of first mesh blocks sequentially electrically connected along a first direction; two adjacent first mesh blocks of the plurality of first mesh blocks are electrically connected to each other by a respective first conductive bridge of a plurality of first conductive bridges; and the plurality of first conductive bridges are arranged in an array; wherein the plurality of first mesh blocks comprise boundary mesh blocks adjacent to a cut-off region in which no touch structure is present; and the touch display panel comprises a shifted conductive bridge shifted from the array of the plurality of first conductive bridges.

[0004] Optionally, the shifted conductive bridge is shifted from an array position to a non-array position; the array position and the positions of the plurality of first conductive bridges are arranged in multiple rows and columns; and the non-array position is shifted out of the array of the multiple rows and columns.

[0005] Optionally, the array position is a position where the touch display panel has a tilt greater than an average tilt of the touch display panel; and the non-array position is a position where the tilt of the touch display panel is smaller than the tilt of the touch display panel at the array position.

[0006] Optionally, the structure of the boundary mesh block differs from the structure of at least one first mesh block of the plurality of first mesh blocks in that the boundary mesh block includes an extended portion at the array position; and the mesh lines of the extended portion are located in the same layer as the mesh lines of the boundary mesh block outside the extended portion and in a different layer than a first conductive bridge electrically connected to the at least one first mesh block.

[0007] Optionally, the clipped region is a window region; the window region is at least partially surrounded by a touch region; and the touch structure is confined to the touch region and is not present in the window region.

[0008] Optionally, the boundary mesh block comprises an extended part; and the plurality of first conductive bridges are located in the same array comprising multiple rows and columns; and the extended part and the plurality of first conductive bridges are each located at multiple array positions of the same array.

[0009] Optionally, the boundary mesh block comprises an extended portion; wherein the displaced conductive bridge comprises: one or more first conductive extensions electrically connected to the extended portion, wherein the one or more first conductive extensions extend away from the extended portion toward the window region; and one or more first conductive plates connected to the one or more first conductive extensions, wherein the one or more first conductive plates at least partially surround the window region; wherein the one or more first conductive plates are electrically connected to a mesh block of the plurality of first mesh electrodes, wherein the mesh block is located on a different side of the window region than the boundary mesh block.

[0010] Optionally, the one or more first conductive extensions are located in a first mesh layer; the one or more first conductive plates, the boundary mesh block, the mesh block, the mesh blocks of the plurality of first mesh electrodes, and the mesh blocks of the plurality of second mesh electrodes are located in a second mesh layer; and the touch display panel further comprises a touch insulation layer between the first mesh layer and the second mesh layer.

[0011] Optionally, the displaced conductive bridge further comprises a first capacitance-compensating conductive plate along an edge of the extended portion adjacent the window region; and the first capacitance-compensating conductive plate is directly connected to at least one mesh line of the extended portion and is connected to the one or more first conductive extensions via a via extending through the touch insulation layer.

[0012] Optionally, the boundary mesh block separates two adjacent second mesh blocks of a plurality of second mesh blocks of a respective one of the plurality of second mesh electrodes from each other; and a first adjacent second mesh block of the two adjacent second mesh blocks, the boundary mesh block, and a second adjacent second mesh block of the two adjacent second mesh blocks successively surround parts of a perimeter of the window area.

[0013] Optionally, each of the plurality of second mesh electrodes comprises a second capacitance-compensating conductive plate, a second conductive plate, and a third capacitance-compensating conductive plate connected sequentially; the second capacitance-compensating conductive plate is directly connected to at least one mesh line of the first adjacent second mesh block; the third capacitance-compensating conductive plate is directly connected to at least one mesh line of the second adjacent second mesh block; and the second conductive plate connects the second capacitance-compensating conductive plate to the third capacitance-compensating conductive plate.

[0014] Optionally, the second capacitance-compensating conductive plate, the second conductive plate, and the third capacitance-compensating conductive plate are parts of a unitary structure.

[0015] Optionally, the one or more first conductive extensions are located in the first mesh layer; the second capacitance-compensating conductive plate, the second conductive plate, and the third capacitance-compensating conductive plate are located in the second mesh layer; and the one or more first conductive extensions span the second conductive plate.

[0016] Optionally, on a first side, the first adjacent second mesh block, the boundary mesh block, and the second adjacent second mesh block border the window area; on a second side, the first adjacent second mesh block, the boundary mesh block, and the second adjacent second mesh block lie along an edge of the touch structure; the touch display panel further comprises: a first trace line electrically connecting the boundary mesh block to an integrated touch circuit, the first trace line being directly connected to at least one mesh line of the boundary mesh block; one or more second conductive extensions electrically connected to the first adjacent second mesh block, the one or more second conductive extensions extending from the first adjacent second mesh block away from the window area;one or more third conductive extensions electrically connected to the second adjacent second mesh block, the one or more third conductive extensions extending from the second adjacent second mesh block away from the window region; and a connecting line connecting the one or more second conductive extensions to the one or more third conductive extensions.

[0017] Optionally, the one or more second conductive extensions, the connecting line, and the one or more third conductive extensions are parts of a unitary structure in the first mesh line layer; and the first trace line, the first adjacent second mesh block, the boundary mesh block, and the second adjacent second mesh block are located in the second mesh line layer.

[0018] Optionally, the boundary mesh block is located in a corner area of ​​the touch display panel; and the clipped area is an area outside the touch structure and adjacent to the corner area.

[0019] Optionally, the displaced conductive bridge comprises one or more fourth conductive extensions electrically connected to the boundary mesh block, wherein the one or more fourth conductive extensions extend away from the boundary mesh block toward the region outside the touch structure; and the one or more fourth conductive extensions are electrically connected to a second trace line, wherein the second trace line is electrically connected to a touch integrated circuit.

[0020] Optionally, the displaced conductive bridge further comprises a fourth capacitance-compensating conductive plate directly connected to at least one mesh line of the boundary mesh block; the fourth capacitance-compensating conductive plate is electrically connected to the one or more fourth conductive extensions; the one or more fourth conductive extensions are located in the first mesh line layer; and the boundary mesh block, the fourth capacitance-compensating conductive plate, and the second trace line are located in the second mesh line layer.

[0021] Optionally, the touch display panel further comprises a third trace line electrically connected to a mesh block of the plurality of second mesh electrodes; wherein the third trace line is located between the second trace line and the boundary mesh block; and the one or more fourth conductive extensions span the third trace line.

[0022] Optionally, a line width of mesh lines of the shifted conductive bridge is larger than a line width of mesh lines of the plurality of first conductive bridges.

[0023] In another aspect, the present invention provides a display device comprising a display panel and a touch display panel described herein or a touch display panel manufactured by a method described herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The following drawings are merely illustrative examples according to various disclosed embodiments and are not intended to limit the scope of the present invention. LIST OF FIGURES Fig. 1 is a schematic diagram showing the structure of a touch structure in some embodiments according to the present disclosure. Fig. 2A shows an array of a plurality of first conductive bridges in some embodiments according to the present disclosure. Fig. 2B shows an example of a shifted conductive bridge shifted from the array of the plurality of first conductive bridges. Fig. 3A to Fig. 3E illustrate a process for fabricating a mesh line layer in a touch structure in some embodiments according to the present disclosure. Fig. 4 shows an arrangement of a touch structure relative to a plurality of subpixels in a display panel having a touch structure in some embodiments according to the present disclosure. Fig. 5 shows an arrangement of a touch structure relative to a plurality of anodes in a display panel having a touch structure in some embodiments according to the present disclosure. Fig. 6 shows the structure of a touch structure in a region in which a first mesh electrode spans a respective second mesh electrode. Fig. Figure 7A shows the structure of a crossing in Fig. 6. Fig. Figure 7B shows the structure of a first mesh line layer in Fig. 7A. Fig. Figure 7C shows the structure of a touch insulating layer in Fig. 7A. Fig. Figure 7D shows the structure of a second mesh line layer in Fig. 7A. Fig. 8 is a cross-sectional view taken along a line AA' in Fig. 7A. Fig. 9 shows possible cropped regions in a display panel with a touch structure in some embodiments according to the present disclosure. Fig. 10A shows a first conductive bridge adjacent to a window region in some embodiments according to the present disclosure. Fig. 10B shows a displaced conductive bridge adjacent to a window region in some embodiments according to the present disclosure. Fig. 11 shows a touch structure in some embodiments according to the present disclosure. Fig. 12 is an enlarged view of an area surrounding an extended portion of a boundary mesh block in a touch structure in some embodiments according to the present disclosure. Fig. 13 is a cross-sectional view taken along a line BB' in Fig. 12. Fig. 14 shows the structure of a second conductive plate and one or more first conductive extensions in a touch structure in some embodiments according to the present disclosure. Fig. 15 shows a boundary mesh block BMB adjacent to an edge of a touch structure in some embodiments according to the present disclosure. Fig. 16 is an enlarged view of a first enlarged area ZR1 in Fig. 15. Fig. 17 is an enlarged view of a second enlarged area ZR2 in Fig. 15. Fig. 18 is a cross-sectional view taken along a line CC' in Fig. 17. Fig. 19 shows a displaced conductive bridge adjacent to a cut-off region in some embodiments according to the present disclosure. Fig. 20 shows a displaced conductive bridge adjacent to a corner region in some embodiments according to the present disclosure. Fig. 21 is an enlarged view of a third enlarged area ZR3 in Fig. 20. Fig. 22 is a cross-sectional view taken along a line DD' in Fig. 21. Fig. 23A is a schematic diagram showing the structure of a capacitance compensating conductive plate in some embodiments according to the present disclosure. Fig. 23B is a schematic diagram showing the structure of a capacitance compensating conductive plate in some embodiments according to the present disclosure. Fig. 24A shows a detailed structure in a display area in a display device in some embodiments according to the present disclosure. Fig. 24B shows a detailed structure in a display area in a display device in some embodiments according to the present disclosure. SPECIFIC EMBODIMENTS

[0025] The present disclosure will now be described in more detail with reference to the following embodiments. It should be noted that the following descriptions of some embodiments are presented herein for purposes of illustration and description only. They are not intended to be exhaustive or limited to the precise form disclosed.

[0026] The present disclosure provides, among other things, a touch display panel and a display device that substantially obviate one or more of the problems due to limitations and disadvantages of the related art. In one aspect, the present disclosure provides a touch display panel. In some embodiments, the touch display panel comprises a plurality of first mesh electrodes and a plurality of second mesh electrodes. Optionally, each of the plurality of first mesh electrodes comprises a plurality of first mesh blocks sequentially electrically connected along a first direction. Optionally, two adjacent first mesh blocks of the plurality of first mesh blocks are electrically connected to each other by a respective first conductive bridge of a plurality of first conductive bridges. Optionally, the plurality of first conductive bridges are arranged in an array.Optionally, the plurality of first mesh blocks comprise boundary mesh blocks adjacent to a clipped region in which no touch structure is present. Optionally, the touch display panel comprises a displaced conductive bridge displaced from the array of the plurality of first conductive bridges.

[0027] In some embodiments, the touch display panel includes a touch structure. Flexible Multi-Layer-On-Cell (FMLOC) touch technology is used to form a mesh electrode pattern on an encapsulation layer of the touch display panel. The mesh electrode pattern includes touch sensing electrodes and touch-sensing electrodes, and optionally fill patterns ("dummy patterns"). A touch detection integrated circuit is configured to detect a touch by sensing a mutual capacitance between a touch sensing electrode and a touch-sensing electrode, as well as a change in the mutual capacitance upon touch.

[0028] Fig. 1 is a schematic diagram showing the structure of a touch structure in some embodiments according to the present disclosure. Referring to Fig. 1, in some embodiments, the touch structure comprises a plurality of first mesh electrodes TE1 arranged in a plurality of rows and a plurality of second mesh electrodes TE2 arranged in a plurality of columns. The plurality of first mesh electrodes TE1 are arranged in a plurality of rows, each of the plurality of rows being a respective one of the plurality of first mesh electrodes TE1. The plurality of second mesh electrodes TE2 are arranged in a plurality of columns, each of the plurality of columns being a respective one of the plurality of second mesh electrodes TE2. Optionally, the touch structure is a mutual capacitance touch structure. Optionally, the plurality of first mesh electrodes TE1 are a plurality of touch sensing electrodes and the plurality of second mesh electrodes TE2 are a plurality of touch sensing electrodes.Optionally, the plurality of first mesh electrodes TE1 are a plurality of touch sensing electrodes and the plurality of second mesh electrodes TE2 are a plurality of touch sensing electrodes.

[0029] As in Fig. 1, each of the plurality of first mesh electrodes TE1 comprises a plurality of first mesh blocks MB1, which are electrically connected one after the other in a respective row along a first direction DR1, and each of the plurality of second mesh electrodes TE2 comprises a plurality of second mesh blocks MB2, which are electrically connected one after the other in a respective column along a second direction DR2. In Fig. 1, a respective one of the plurality of first mesh blocks MB1 and a respective one of the plurality of second mesh blocks MB2 are shown as blocks each surrounded by dashed lines.

[0030] In some embodiments, two adjacent first mesh blocks of the plurality of first mesh blocks MB1 are electrically connected to each other by a respective first conductive bridge RCB1 of a plurality of first conductive bridges. The plurality of first conductive bridges are located at a plurality of intersections. Each intersection IS of the plurality of intersections IS is a position at which two adjacent first mesh blocks of the plurality of first mesh blocks MB1 of a respective one of the plurality of first mesh electrodes TE1 are electrically connected to each other, and two adjacent second mesh blocks of the plurality of second mesh blocks MB2 of a respective one of the plurality of second mesh electrodes TE2 are electrically connected to each other.

[0031] In some embodiments, the plurality of first conductive bridges are located in a first mesh line layer, while the plurality of first mesh blocks MB1 and the plurality of second mesh blocks MB2 are located in a second mesh line layer.

[0032] In some embodiments, two adjacent second mesh blocks of the plurality of second mesh blocks MB2 are electrically connected to each other by a respective second conductive bridge RCB2 of a plurality of second conductive bridges. Optionally, the plurality of first conductive bridges are located in a first mesh line layer, while the plurality of first mesh blocks MB1, the plurality of second mesh blocks MB2, and the plurality of second conductive bridges are located in a second mesh line layer. The respective first conductive bridge RCB1 spans the respective second conductive bridge RCB2.

[0033] Fig. 2A shows an array of a plurality of first conductive bridges in some embodiments according to the present disclosure. Referring to Fig. 2A, the plurality of first conductive bridges are arranged in an array comprising a plurality of rows R and a plurality of columns C. The plurality of rows R and the plurality of columns C intersect. The plurality of first conductive bridges each occupy a plurality of array positions.

[0034] Fig. 2B shows an example of a displaced conductive bridge that is displaced from the array of the plurality of first conductive bridges. Referring to Fig. 2B shows a shifted conductive bridge DCB from the array of the plurality of first conductive bridges, shifted from an array position AP to a non-array position NAP. The array position AP and the positions of the plurality of first conductive bridges are arranged in multiple rows and columns of the array. The non-array position NAP is shifted from the array of multiple rows and columns.

[0035] In some embodiments, the shifted conductive bridge DCB is shifted from the array position AP to the non-array position NAP by at least 10 µm, e.g. B. at least 20 µm, at least 30 µm, at least 40 µm, at least 50 µm, at least 60 µm, at least 70 µm, at least 80 µm, at least 90 µm, at least 100 µm, at least 150 µm, at least 200 µm, at least 250 µm, at least 300 µm, at least 350 µm, at least 400 µm, at least 450 µm, at least 500 µm, at least 550 µm, at least 600 µm, at least 650 µm, at least 700 µm, at least 750 µm, at least 800 µm, at least 850 µm, at least 900 µm, at least 950 µm, at least 1000 µm, at least 1.5 mm, at least 2.0 mm, at least 2.5 mm, at least 3.0 mm, at least 3.5 mm, at least 4.0 mm, at least 4.5 mm, at least 5.0 mm, at least 5.5 mm, at least 6.0 mm, at least 6.5 mm, at least 7.0 mm, at least 7.5 mm, at least 8.0 mm, at least 8.5 mm, at least 9.0 mm or at least 10.0 mm.

[0036] Fig. 3A to Fig. 3E illustrate a process for fabricating a mesh line layer in a touch structure in some embodiments according to the present disclosure. Fig. 3A to Fig. 3E show a manufacturing process in a display area DR adjacent to a cut-off area TR in which no touch structure (e.g., mesh lines of touch electrodes) is present. Referring to Fig. 3A, an encapsulation layer EN is formed on a base substrate BS, and a conductive material layer CML is formed on a side of the encapsulation layer EN remote from the base substrate BS. The encapsulation layer EN has a large slope in a slope region SLR adjacent to the cut-off region TR, which is at least partially due to an organic encapsulation underlayer of the encapsulation layer EN. Referring to Fig. 3B, a photoresist layer PR is formed on a side of the conductive material layer CML that is remote from the base substrate BS. When forming the photoresist layer PR in the slope region SLR, it is difficult to hold the photoresist material on the slope in the slope region SLR due to gravity and the large inclination in this region. As a result, the photoresist material flows to the bottom of the slope, resulting in the photoresist material not being sufficiently applied in the slope region SLR. Referring to Fig. 3C, the photoresist layer PR is exposed and developed using a mask plate, thereby producing an exposed photoresist layer EPR. Referring to Fig. 3D, the conductive material layer CML is etched to form an etched conductive material layer ECML. With reference to Fig. 3E, the exposed photoresist layer EPR is then removed, forming a first mesh layer MLL1. When fabricated using a mask plate, the mesh lines of the first mesh layer MLL1 have a critical dimension in the tilt region SLR (where the photoresist material is not sufficiently applied) that is smaller than a critical dimension in the display region DR. The mesh lines of the first mesh layer MLL1 formed in the tilt region SLR are prone to line breaks.

[0037] Once the first mesh layer MLL1 is formed, a contact isolation layer is formed on the first mesh layer MLL1, and a second mesh layer is formed on a side of the contact isolation layer that is remote from the first mesh layer MLL1. Due to the large inclination in the inclination region SLR, similar problems occur with the meshes of the second mesh layer. The meshes of the second mesh layer are even more prone to line breaks.

[0038] Fig. 4 shows an arrangement of a touch structure relative to a plurality of subpixels in a display panel with a touch structure in some embodiments according to the present disclosure. Referring to Fig. 4, in one example, the plurality of subpixels comprise a respective first subpixel sp1, a respective second subpixel sp2, a respective third subpixel sp3, and a respective fourth subpixel sp4. Optionally, each pixel of the display panel comprises the respective first subpixel sp1, the respective second subpixel sp2, the respective third subpixel sp3, and the respective fourth subpixel sp4. The plurality of subpixels in the display panel are arranged in an array. In one example, the array of the plurality of subpixels comprises a repeating array in S1-S2-S3-S4 format, where S1 represents the respective first subpixel sp1, S2 represents the respective second subpixel sp2, S3 represents the respective third subpixel sp3, and S4 represents the respective fourth subpixel sp4.In another example, the S1-S2-S3-S4 format is a C1-C2-C3-C4 format, where C1 represents the respective first subpixel sp1 of a first color, C2 represents the respective second subpixel sp2 of a second color, C3 represents the respective third subpixel sp3 of a third color, and C4 represents the respective fourth subpixel sp4 of a fourth color. In another example, the S1-S2-S3-S4 format is a C1-C2-C3-C2' format, where C1 represents the respective first subpixel sp1 of a first color, C2 represents the respective second subpixel sp2 of a second color, C3 represents the respective third subpixel sp3 of a third color, and C2' represents the respective fourth subpixel sp4 of the second color. In another example, the C1-C2-C3-C2' format is an RGBG format in which the respective first subpixel sp1 is a red subpixel, the respective second subpixel sp2 is a green subpixel, the respective third subpixel sp3 is a green subpixel, and the respective fourth subpixel sp4 is a blue subpixel.The dashed lines in . Fig. 4 show subpixel openings defined by a pixel definition layer.

[0039] With reference to Fig. 4, in some embodiments, the mesh lines of the touch structure are limited to an inter-subpixel area of ​​the display panel. For example, all mesh lines of the first plurality of mesh blocks, the second plurality of mesh blocks, the connected plurality of mesh blocks, the first plurality of individual mesh lines, and the second plurality of individual mesh lines are limited to the inter-subpixel area. Fig. 5 shows an arrangement of a touch structure relative to multiple anodes in a display panel with a touch structure in some embodiments according to the present disclosure. In Fig. 5 shows the multiple anodes.

[0040] Fig. Figure 6 shows the structure of a touch structure in a region in which a respective first mesh electrode spans a respective second mesh electrode. Referring to Fig. 6, two adjacent first mesh blocks of the plurality of first mesh blocks of a respective one of the plurality of first mesh electrodes are electrically connected to each other, and two adjacent second mesh blocks of the plurality of second mesh blocks of a respective one of the plurality of second mesh electrodes are electrically connected to each other. In one example, the two adjacent first mesh blocks include a first adjacent first mesh block AMB1-1 and a second adjacent first mesh block AMB1-2; and the two adjacent second mesh blocks include a first adjacent second mesh block AMB2-1 and a second adjacent second mesh block AMB2-2.

[0041] Fig. Figure 7A shows the structure of a crossing in Fig. 6. Fig. Figure 7B shows the structure of a first mesh line layer in Fig. 7A. Fig. Figure 7C shows the structure of a touch insulating layer in Fig. 7A. Fig. Figure 7D shows the structure of a second mesh line layer in Fig. 7A. In some embodiments, two adjacent first mesh blocks of the plurality of first mesh blocks are electrically connected to each other by a respective first conductive bridge. Fig. 7B shows the structure of a respective first conductive bridge RCB1 in some embodiments according to the present disclosure. The respective first conductive bridge RCB1 comprises two spaced-apart structures. Each structure comprises a plurality of consecutive rings connected to each other. Each structure comprises at least a plurality of mesh lines along the second direction DR2. Fig. Figure 7C shows a plurality of vias v extending through the touch insulation layer TI. The second mesh layer is connected to the respective first conductive bridge RCB1 via the plurality of vias v.

[0042] With reference to Fig. 7D, the second mesh line layer at the intersection comprises two adjacent first mesh blocks of the plurality of first mesh blocks and two adjacent second mesh blocks of the plurality of second mesh blocks. In one example, the two adjacent first mesh blocks comprise a first adjacent first mesh block AMB1-1 and a second adjacent first mesh block AMB1-2; and the two adjacent second mesh blocks comprise a first adjacent second mesh block AMB2-1 and a second adjacent second mesh block AMB2-2.

[0043] Fig. 8 is a cross-sectional view taken along a line AA' in Fig. 7A. With reference to Fig. 8, the touch structure comprises a second inorganic encapsulation sublayer CVD2, a buffer layer BUF on the second inorganic encapsulation sublayer CVD2, a first mesh layer ML1 on a side of the buffer layer BUF remote from the second inorganic encapsulation sublayer CVD2, a touch insulation layer TI on a side of the first mesh layer ML1 remote from the buffer layer BUF, a second mesh layer ML2 on a side of the touch insulation layer TI remote from the first mesh layer ML1, and an overcoat layer on a side of the second mesh layer ML2 remote from the touch insulation layer TI. As shown in Fig. As shown in Fig. 8, the first adjacent first mesh block AMB1-1 is connected to the respective first conductive bridge RCB1 via a via passing through the touch insulation layer TI.

[0044] Fig. 9 shows possible cropped regions in a display panel with a touch structure in some embodiments according to the present disclosure. Fig. Figure 9 shows several examples of positions of clipped areas with boundary mesh blocks. With reference to Fig. 9, areas 1, 2, and 3 are examples of possible clipped areas with one or more boundary mesh blocks. In one example, the clipped area is a window area (area 1) with a hole configured for the installation of an accessory such as a camera lens or a fingerprint sensor. The touch structure is not present in the window area, which is at least partially surrounded by a touch area. The touch structure is confined to the touch area and is not present in the window area. In another example, no display elements and touch structure of the display panel are present in the window area.

[0045] In another example, the clipped region is a region (Region 2 or Region 3) outside the contact structure and adjacent to a corner region CR. The boundary mesh block is located in a corner region CR of the contact structure. In one example, the corner region CR is a corner region with at least part of an arcuate boundary, such as a rounded corner region.

[0046] Fig. 10A shows a first conductive bridge adjacent to a window region in some embodiments according to the present disclosure. Fig. 10B shows a displaced conductive bridge adjacent to a window region in some embodiments according to the present disclosure. Referring to Fig. 10A, the display panel with the touch structure has a display area DR and a peripheral area PPR outside the display area PR. The display panel further has a window area WR, wherein the touch structure is missing from the window area WR. The window area WR is at least partially surrounded by the touch area TCR. In one example, the touch area TCR substantially overlaps with the display area DR. As described above in connection with Fig. 2A, in some embodiments, the touch structure includes a plurality of first conductive bridges arranged in an array comprising a plurality of rows and columns. A respective first conductive bridge is shown in Fig. 10A is designated as RCB1.

[0047] As mentioned above in connection with Fig. 3A to Fig. As shown in 3D, the respective first conductive bridge RCB1 is located at least partially on an incline within an inclination region, since the respective first conductive bridge RCB1 is located at a position adjacent to the window region WR. The respective first conductive bridge RCB1 is prone to line breaks during the manufacturing process.

[0048] With reference to Fig. 10B, instead of forming the respective first conductive bridge RCB1 in the slope region, a shifted conductive bridge DCB for connecting adjacent first mesh blocks may be formed in a region with a much lower slope or substantially no slope, as in Fig. 10B. The displaced conductive bridge DCB is displaced from the array of the plurality of first conductive bridges from an array position to a non-array position. Referring to Fig. 10B, the displaced conductive bridge DCB is not located in the same row as two adjacent first conductive bridges. The array position is a position where the tilt of the touch structure is greater than an average tilt of the touch structure. The non-array position is a position where the tilt of the touch structure is smaller than the tilt of the touch structure at the array position. For example, the displaced conductive bridge DCB is located in Fig. 10B at a bottom of the inclination, so that the inclination of the non-array position with the displaced conductive bridge DCB is smaller than the inclination of the touch structure at the array position. In Fig. 10A, the respective first conductive bridge RCB1 is located in an upper or middle part of the inclination, so that the inclination of the array position with the respective first conductive bridge RCB1 is greater than an average inclination of the touch structure due to the presence of the truncated region and is greater than the inclination of the touch structure at the non-array position. By arranging the displaced conductive bridge DCB in the non-array position, the displaced conductive bridge DCB is less susceptible to line breaks.

[0049] In addition, as in Fig. 10B shows the shifted conductive bridge DCB compared to the respective first conductive bridge RCB1 in Fig. 10A is even closer to the window area WR. Therefore, the shifted conductive bridge DCB is outside the display area DR, while the respective first conductive bridge RCB1 is in Fig. 10A lies within the display area DR. Without the need to form subpixels outside the display area DR, more space is available for forming mesh lines. A line width of the displaced conductive bridge DCB may be larger than a line width of mesh lines in the display area DR. In an example, the line width of mesh lines in the display area DR is in a range of 1 µm to 5 µm, e.g., 1.0 µm to 2.0 µm, 2.0 µm to 3.0 µm, 3.0 µm to 4.0 µm, or 4.0 µm to 5.0 µm. Optionally, the line width of mesh lines in the display area DR is 3.0 µm. Optionally, the line width of mesh lines in the display area DR is 3.5 µm. Optionally, the linewidth of the displaced conductive bridge DCB is greater than 5 µm, e.g., 5 µm to 6 µm, 6 µm to 8 µm, 8 µm to 10 µm, 10 µm to 12 µm, 12 µm to 14 µm, 14 µm to 16 µm, 16 µm to 18 µm, or 18 µm to 20 µm. Optionally, the linewidth of the displaced conductive bridge DCB is greater than 10 µm.

[0050] Fig. 11 shows a touch structure in some embodiments according to the present disclosure. Referring to Fig. 11, the touch structure includes a boundary mesh block BMB adjacent to a window region WR in which the touch structure is absent. The boundary mesh block BMB is electrically connected to a mesh block AMB of the plurality of first mesh electrodes. The mesh block AMB is located on a different side (e.g., on an opposite side) of the window region WR than the boundary mesh block BMB. The boundary mesh block BMB separates two adjacent second mesh blocks of the plurality of second mesh blocks, e.g., a first adjacent second mesh block AMB2-1 and a second adjacent second mesh block AMB2-2, from each other. The first adjacent second mesh block AMB2-1, the boundary mesh block BMB, and the second adjacent second mesh block AMB2-2 sequentially surround parts of a perimeter of the window region WR.

[0051] In some embodiments, the structure of the boundary mesh block BMB differs from the structure of at least a first mesh block (e.g., a mesh block CMB in Fig. 11) of the plurality of first mesh blocks in that the boundary mesh block comprises an extended part EP at a first array position AP1, while the mesh block CMB does not have an extended part. Instead, the touch structure comprises a respective first conductive bridge RCB1 in a second array position AP2 corresponding to the mesh block CMB. The mesh lines of the extended part EP extend at least partially across the first array position AP1. The respective first conductive bridge RCB1 is located in a first mesh line layer, while the extended part EP is located in a second mesh line layer. The mesh lines of the extended part EP lie in the same layer as the mesh lines of the boundary mesh block BMB outside the extended part EP.In one example, the extended part EP, the mesh lines of the boundary mesh block BMB outside the extended part EP, the plurality of first mesh blocks and the plurality of second mesh blocks are located in the second mesh line layer, while the plurality of first conductive bridges are located in the first mesh line layer.

[0052] As used herein, the term "same layer" refers to the relationship between layers formed simultaneously in the same step. In one example, the mesh lines of the extended portion EP and the mesh lines of the boundary mesh block BMB outside the extended portion EP are in the same layer if they are formed in one or more steps of the same patterning process performed in a material deposited in the same deposition process. In another example, the mesh lines of the extended portion EP and the mesh lines of the boundary mesh block BMB outside the extended portion EP can be formed in the same layer by simultaneously performing the step of forming the mesh lines of the extended portion EP and the step of forming the mesh lines of the boundary mesh block BMB outside the extended portion EP.The term “same layer” does not always mean that the thickness of the layer or the height of the layer is the same in the cross-sectional view.

[0053] In some embodiments, the extended portion EP and the plurality of first conductive bridges are located in the same array, which includes multiple rows and columns; and the extended portion EP and the plurality of first conductive bridges are each located at multiple array positions. However, the extended portion EP is located in a different layer than the plurality of first conductive bridges.

[0054] In some embodiments, the area of ​​the boundary mesh block BMB is smaller than the area of ​​each of the plurality of first mesh blocks due to the presence of the clipped region (by 5%, by 10%, by 20%, by 30%, by 40%, by 50%, by 60%, by 70%, by 80%, by 90%, or by 95% or more).

[0055] Fig. 12 is an enlarged view of an area surrounding an extended portion of a boundary mesh block in a touch structure in some embodiments according to the present disclosure. Referring to Fig. 11 and Fig. 12, in some embodiments, the displaced conductive bridge DCB comprises one or more first conductive extensions CE1 electrically connected to the extended portion EP, wherein the one or more first conductive extensions CE1 extend away from the extended portion EP toward the window region WR; and one or more first conductive plates CP1 connected to the one or more first conductive extensions CE1, wherein the one or more first conductive plates CP1 at least partially surround the window region WR. The one or more first conductive plates CP1 are electrically connected to a mesh block AMB of the plurality of first mesh electrodes. The mesh block AMB is located on a different side of the window region WR than the boundary mesh block BMB.

[0056] Fig. 13 is a cross-sectional view taken along a line BB' in Fig. 12. With reference to Fig. 13, the touch structure includes a base substrate BS; a plurality of signal lines (e.g., gate lines GL) on the base substrate BS; an encapsulation layer EN on a side of the plurality of signal lines remote from the base substrate BS for encapsulating the plurality of signal lines; a buffer layer BUF on a side of the encapsulation layer EN remote from the base substrate BS; a first mesh layer ML1 on a side of the buffer layer BUF remote from the encapsulation layer EN; a touch insulating layer TI on a side of the first mesh layer ML1 remote from the buffer layer BUF; a second mesh layer ML2 on a side of the touch insulating layer TI remote from the first mesh layer ML1; and an overlay layer on a side of the second mesh layer ML2 remote from the touch insulating layer TI. As shown in Fig. As shown in Figure 13, the one or more first conductive extensions CE1 are located in the first mesh layer ML1; the extended part EP and the one or more first conductive plates CP1 are located in the second mesh layer ML2. Optionally, the one or more first conductive extensions CE1 are located in the first mesh layer ML1; the one or more first conductive plates CP1, the boundary mesh block, the mesh block, the mesh blocks of the plurality of first mesh electrodes, and the mesh blocks of the plurality of second mesh electrodes are located in the second mesh layer ML2. The touch insulating layer TI is located between the first mesh layer ML1 and the second mesh layer ML2.

[0057] With reference to Fig. 11 to Fig. 13, in some embodiments, the shifted conductive bridge further comprises a first capacitance-compensating conductive plate CC1 along an edge of the extended portion EP adjacent to the window region WR. The first capacitance-compensating conductive plate CC1 is directly connected to at least one mesh line of the extended portion EP and is connected to the one or more first conductive extensions CE1 via a via v passing through the touch insulation layer TI. Optionally, the one or more first conductive extensions CE1 are located in the first mesh line layer ML1; the one or more first conductive plates CP1, the first capacitance-compensating conductive plate CC1, the boundary mesh block, the mesh block AMB, mesh blocks of the plurality of first mesh electrodes, and mesh blocks of the plurality of second mesh electrodes are located in the second mesh line layer ML2.

[0058] In some embodiments, the boundary mesh block BMB separates two adjacent second mesh blocks of the plurality of second mesh blocks of a respective one of the plurality of second mesh electrodes from each other. A first adjacent second mesh block AMB2-1 of the two adjacent second mesh blocks, the boundary mesh block BMB, and a second adjacent second mesh block AMB2-2 of the two adjacent second mesh blocks sequentially surround parts of a perimeter of the window area WR. In some embodiments, the respective one of the plurality of second mesh electrodes comprises a second capacitance-compensating conductive plate CC2, a second conductive plate CP2, and a third capacitance-compensating conductive plate CC3, which are sequentially connected. Optionally, the second capacitance-compensating conductive plate CC2, the second conductive plate CP2, and the third capacitance-compensating conductive plate CC3 are parts of a unitary structure.Optionally, the second capacitance-compensating conductive plate CC2, the second conductive plate CP2, and the third capacitance-compensating conductive plate CC3 are located in the same layer. In some embodiments, the one or more first conductive extensions CE1 are located in the first mesh layer ML1; the second capacitance-compensating conductive plate CC2, the second conductive plate CP2, and the third capacitance-compensating conductive plate CC3 are located in the second mesh layer ML2.

[0059] In some embodiments, the second capacitance-compensating conductive plate CC2 is directly connected to at least one mesh line of the first adjacent second mesh block AMB2-1; the third capacitance-compensating conductive plate CC3 is directly connected to at least one mesh line of the second adjacent second mesh block AMB2-2; and the second conductive plate CP2 connects the second capacitance-compensating conductive plate CC2 to the third capacitance-compensating conductive plate CC3.

[0060] In some embodiments, the one or more first conductive extensions CE1 span the second conductive plate CP2, for example, an orthographic projection of the one or more first conductive extensions CE1 on the base substrate partially overlaps with an orthographic projection of the second conductive plate CP2 on the base substrate. Fig. 14 shows the structure of a second conductive plate and one or more first conductive extensions in a touch structure in some embodiments according to the present disclosure. In some embodiments, with reference to Fig. 13 and Fig. 14, the touch structure comprises a hole H passing through the second conductive plate CP2, and each of the one or more first conductive extensions CE1 spans the hole H, as shown in Fig. 13 and Fig. 14. The hole H separates the second conductive plate CP2 and an adjacent capacitance-compensating conductive plate (e.g., the second capacitance-compensating conductive plate CC2 or the third capacitance-compensating conductive plate CC3).

[0061] In some embodiments, the displaced conductive bridge DCB is displaced from an array position to a non-array position adjacent to an edge of the touch structure. Fig. 15 shows a boundary mesh block BMB adjacent to an edge of a touch structure in some embodiments according to the present disclosure. Fig. 16 is an enlarged view of a first enlarged area ZR1 in Fig. 15. Fig. 17 is an enlarged view of a second enlarged area ZR2 in Fig. 15. With reference to Fig. 15 to Fig. 17, on a first side S1, the first adjacent second mesh block AMB2-1, the boundary mesh block BMB, and the second adjacent second mesh block AMB2-2 border the window area WR. On a second side S2, the first adjacent second mesh block AMB2-1, the boundary mesh block BMB, and the second adjacent second mesh block AMB2-2 lie along an edge EG of the contact structure. By arranging the displaced conductive bridge DCB in the non-array position along the edge EG, the displaced conductive bridge DCB is less susceptible to line breaks.

[0062] In some embodiments, the touch structure further comprises a first trace line TL1 electrically connecting the boundary mesh block BMB along the edge EG on the second side S2 to an integrated touch circuit on the first side S1. The first trace line TL1 is electrically connected to at least one mesh line of the boundary mesh block BMB. Optionally, the first trace line TL1 runs along the edge EG of the touch structure. Optionally, the first trace line TL1 is directly connected to at least one mesh line of the boundary mesh block BMB. The first trace line TL1 runs in a peripheral region of the display panel with the touch structure and is limited to the peripheral region.

[0063] In some embodiments, the touch structure further comprises one or more second conductive extensions CE2 electrically connected to the first adjacent second mesh block AMB2-1. The one or more second conductive extensions CE2 extend from the first adjacent second mesh block AMB2-1 away from the window region WR.

[0064] In some embodiments, the touch structure further comprises one or more third conductive extensions CE3 electrically connected to the second adjacent second mesh block AMB2-2. The one or more third conductive extensions CE3 extend from the second adjacent second mesh block AMB2-2 away from the window region WR.

[0065] In some embodiments, the touch structure further comprises a connection line CL connecting the one or more second conductive extensions CE2 to the one or more third conductive extensions CE3.

[0066] In some embodiments, the one or more second conductive extensions CE2, the connection line CL, and the one or more third conductive extensions CE3 are located in the same layer; the connection line CL is in direct contact with the one or more second conductive extensions CE2; and the connection line CL is in direct contact with the one or more third conductive extensions CE3. In one example, the one or more second conductive extensions CE2, the connection line CL, and the one or more third conductive extensions CE3 are parts of a unitary structure in the first mesh layer. The first trace line, the first adjacent second mesh block, the boundary mesh block, and the second adjacent second mesh block are located in the second mesh layer.

[0067] Fig. 18 is a cross-sectional view taken along a line CC' in Fig. 17. With reference to Fig. 15 to Fig. 18, in some embodiments, the one or more second conductive extensions CE2 and the one or more third conductive extensions CE3 are located in the first mesh layer ML1; and the first trace line TL1, the connection line CL, the first adjacent second mesh block AMB2-1, the boundary mesh block BMB, and the second adjacent second mesh block AMB2-2 are located in the second mesh layer ML2. The connection line CL is connected to the one or more second conductive extensions CE2 and the one or more third conductive extensions CE3 via vias that pass through the touch insulation layer TI. The first adjacent second mesh block AMB2-1 is connected to the one or more second conductive extensions CE2 via one or more vias that pass through the touch insulation layer TI.The second adjacent second mesh block AMB2-2 is connected to the one or more third conductive extensions CE3 via one or more vias passing through the touch insulation layer TI.

[0068] Fig. 19 shows a displaced conductive bridge adjacent to a cut-off region in some embodiments according to the present disclosure. Referring to Fig. 19, in some embodiments, the boundary mesh block is located in a corner region CR of the touch structure. The truncated region TR is a region outside the touch structure and adjacent to the corner region CR. In one example, the corner region CR is a rounded corner region. A respective first conductive bridge RCB1 connected to the boundary mesh block may be located at an array position adjacent to the truncated region TR. As shown in Fig. As shown in Figure 19, the respective first conductive bridge RCB1 is located in close proximity to a dam structure DAM of the display panel with the touch structure. The presence of the dam structure DAM results in a tilted region or an otherwise uneven layer structure in the corner region CR. In one example, mesh lines of the respective first conductive bridge RCB1 are prone to line breaks when they are within a threshold distance from the dam structure DAM. Optionally, the threshold distance is less than 3.0 mm, e.g., 2.5 mm, 2.0 mm, 1.5 mm, 1.0 mm, or 0.5 mm. To eliminate the line break problem, the respective first conductive bridge RCB1 can be moved from the array position to the non-array position.

[0069] Fig. 20 shows a displaced conductive bridge adjacent to a corner region in some embodiments according to the present disclosure. Fig. 21 is an enlarged view of a third enlarged area ZR3 in Fig. 20. Fig. 22 is a cross-sectional view taken along a line DD' in Fig. 21. With reference to Fig. 20 to Fig. 22, in some embodiments, the displaced conductive bridge comprises one or more fourth conductive extensions CE4 electrically connected to the boundary mesh block BMB. The one or more fourth conductive extensions CE4 extend away from the boundary mesh block BMB toward the area outside the touch structure. Optionally, the one or more fourth conductive extensions CE4 are electrically connected to a second trace line TL2. The second trace line TL2 is electrically connected to an integrated touch circuit configured to provide touch sensing signals to the mesh electrodes and / or receive touch detection signals from the mesh electrodes. The second trace line TL2 extends in a peripheral region of the display panel with the touch structure and is bounded in the peripheral region.

[0070] In some embodiments, the displaced conductive bridge further comprises a fourth capacitance-compensating conductive plate CC4 directly connected to at least one mesh line of the boundary mesh block BMB. Optionally, the fourth capacitance-compensating conductive plate CC4 is electrically connected to the one or more fourth conductive extensions CE4 via one or more vias extending through the touch insulation layer TI.

[0071] In some embodiments, the one or more fourth conductive extensions CE4 are located in the first mesh layer ML1; the boundary mesh block BMB, the fourth capacitance-compensating conductive plate CC4, and the second trace line TL2 are located in the second mesh layer ML2.

[0072] In some embodiments, the touch structure further comprises a third trace line TL3 electrically connected to a mesh block of the plurality of second mesh electrodes. The third trace line TL3 is electrically connected to an integrated touch circuit. Optionally, the third trace line TL3 is located between the second trace line TL2 and the boundary mesh block BMB. In one example, the one or more fourth conductive extensions CE4 span the third trace line TL3.

[0073] The capacitance-compensating conductive plate (e.g., each of the first capacitance-compensating conductive plate CC1, the second capacitance-compensating conductive plate CC2, and the third capacitance-compensating conductive plate CC3) can be implemented with structures in various suitable shapes. In some embodiments, the capacitance-compensating conductive plate has a single-layer structure, optionally located in the same layer as the mesh lines of the mesh blocks of the plurality of first mesh electrodes and the plurality of second mesh electrodes.

[0074] In some embodiments, the capacitance-compensating conductive plate has a double sublayer structure including a first sublayer in the same layer as the mesh lines of the mesh blocks of the plurality of first mesh electrodes and the plurality of second mesh electrodes and a second sublayer in the same layer as the conductive bridge (e.g., the plurality of first conductive bridges and the shifted conductive bridge). Fig. 23A is a schematic diagram showing the structure of a capacitance compensating conductive plate in some embodiments according to the present disclosure. Fig. 23B is a schematic diagram showing the structure of a capacitance-compensating conductive plate in some embodiments according to the present disclosure. Referring to Fig. 23A and Fig. 23B, the double sublayer structure comprises a first sublayer SUB-1 and a second sublayer SUB-2. The first sublayer SUB-1 is connected to the second sublayer SUB-2 via a via v that passes through the touch insulation layer TI. In Fig. 23A, the orthographic projections of the first sublayer SUB-1 and the second sublayer SUB-2 on the touch insulation layer TI at least partially overlap with each other over the entire length of the capacitance-compensating conductive plate. In Fig. 23B, the first sublayer SUB-1 and the second sublayer SUB-2 alternate. The orthographic projections of the first sublayer SUB-1 and the second sublayer SUB-2 on the touch insulating layer TI do not substantially overlap with each other, except for the position where the first sublayer SUB-1 is connected to the second sublayer SUB-2 via the via v.

[0075] Optionally, the conductive plate (e.g., any of the first conductive plate CP1, the second conductive plate CP2, the first capacitance-compensating conductive plate CC1, the second capacitance-compensating conductive plate CC2, and the third capacitance-compensating conductive plate CC3) has a line width that is larger than a line width of the mesh lines of the plurality of first mesh blocks and the plurality of second mesh blocks. Optionally, the line width of the conductive plate is in a range of 5 µm to 50 µm, e.g., E.g., 5 µm to 10 µm, 10 µm to 15 µm, 15 µm to 20 µm, 20 µm to 25 µm, 25 µm to 30 µm, 30 µm to 35 µm, 35 µm to 40 µm, 40 µm to 45 µm, or 45 µm to 50 µm. Optionally, the line width of the conductive plate is 20 µm. Optionally, the line width of the mesh lines of the plurality of first mesh blocks and the plurality of second mesh blocks is in a range of 1 µm to 5 µm, e.g., E.g. 1 µm to 2 µm, 2 µm to 3 µm, 3 µm to 4 µm or 4 µm to 5 µm.Optionally, the mesh lines of the plurality of first mesh blocks and the plurality of second mesh blocks have a line width of 3 µm. Optionally, a ratio between the line width of the conductive plate and the line width of the mesh lines of the plurality of first mesh blocks and the plurality of second mesh blocks is in a range of 1:1 to 50:1, e.g., 1:1 to 2:1, 2:1 to 3:1, 3:1 to 4:1, 4:1 to 5:1, 5:1 to 10:1, 10:1 to 20:1, 20:1 to 30:1, 30:1 to 40:1, or 40:1 to 50:1.

[0076] In another aspect, the present disclosure provides a display device comprising a display panel and a touch structure described herein or fabricated by a method described herein, as well as one or more integrated circuits connected to the display panel. Examples of suitable display devices include, but are not limited to, an electronic paper, a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital album, a GPS, etc. Optionally, the display device is an organic light-emitting diode display device. Optionally, the display device is a liquid crystal display device.

[0077] Fig. 24A shows a detailed structure in a display area in a display device in some embodiments according to the present disclosure. Referring to Fig. 24A, in some embodiments, the display device in the display area comprises a base substrate BS (e.g., a flexible base substrate); an active layer ACT of a respective one of a plurality of thin-film transistors TFT on the base substrate BS; a gate insulating layer GI on a side of the active layer ACT remote from the base substrate BS; a gate electrode G and a first capacitor electrode Ce1 (respectively parts of a first gate metal layer) on a side of the gate insulating layer GI remote from the base substrate BS; an insulating layer IN on a side of the gate electrode G and the first capacitor electrode Ce1 remote from the gate insulating layer GI; a second capacitor electrode Ce2 (a part of a second gate metal layer) on a side of the insulating layer IN remote from the gate insulating layer GI; an interlayer dielectric layer ILD on a side of the second capacitor electrode Ce2 remote from the gate insulating layer GI; a source electrode Sand a drain electrode D (parts of a first SD metal layer) on a side of the dielectric interlayer ILD remote from the gate insulating layer GI; a planarization layer PLN on a side of the source electrode S and the drain electrode D remote from the dielectric interlayer ILD; a pixel definition layer PDL defining a subpixel opening and located on a side of the planarization layer PLN remote from the base substrate BS; and a light-emitting element LE in the subpixel opening. The light-emitting element LE comprises an anode AD on a side of the planarization layer PLN remote from the dielectric interlayer ILD; a light-emitting layer EL on a side of the anode AD remote from the planarization layer PLN; and a cathode layer CD on a side of the light-emitting layer EL remote from the anode AD. The display device further comprises an encapsulation layer in the display regionEN, which encapsulates the light-emitting dummy element DLE and is located on a side of the cathode layer CD remote from the base substrate BS. In some embodiments, the encapsulation layer EN comprises a first inorganic encapsulation sublayer CVD1 on a side of the cathode layer CD remote from the base substrate BS, an organic encapsulation sublayer IJP on a side of the first inorganic encapsulation sublayer CVD1 remote from the base substrate BS, and a second inorganic encapsulation sublayer CVD2 on a side of the organic encapsulation sublayer IJP remote from the first inorganic encapsulation sublayer CVD1. The display device further comprises, in the display region, a buffer layer BUF on a side of the encapsulation layer EN remote from the base substrate BS; a plurality of second electrode bridges BR2 on a side of the buffer layer BUF remote from the encapsulation layer EN; a touch insulation layer TI ona side of the plurality of second electrode bridges BR2 remote from the buffer layer BUF; a plurality of first touch electrodes TE1 on a side of the touch insulating layer TI remote from the buffer layer BUF; and an overcoat layer OC on a side of the plurality of first touch electrodes TE1 remote from the touch insulating layer TI.

[0078] Fig. 24B shows a detailed structure in a display area in a display device in some embodiments according to the present disclosure. Referring to Fig. 24B, in some embodiments, the display device in the display area comprises a base substrate BS (e.g., a flexible base substrate); an active layer ACT of a respective one of a plurality of thin-film transistors TFT on the base substrate BS; a gate insulating layer GI on a side of the active layer ACT remote from the base substrate BS; a gate electrode G and a first capacitor electrode Ce1 (respectively parts of a first gate metal layer) on a side of the gate insulating layer GI remote from the base substrate BS; an insulating layer IN on a side of the gate electrode G and the first capacitor electrode Ce1 remote from the gate insulating layer GI; a second capacitor electrode Ce2 (a part of a second gate metal layer) on a side of the insulating layer IN remote from the gate insulating layer GI; an interlayer dielectric layer ILD on a side of the second capacitor electrode Ce2 remote from the gate insulating layer GI; a source electrode Sand a drain electrode D (parts of a first SD metal layer) on a side of the dielectric interlayer ILD remote from the gate insulating layer GI; a passivation layer PVX on a side of the source electrode S and the drain electrode D remote from the dielectric interlayer ILD; a first planarization layer PLN1 on a side of the passivation layer PVX remote from the dielectric interlayer ILD; a relay electrode RE (part of a second SD metal layer) on the side of the first planarization layer PLN1 remote from the passivation layer PVX; a second planarization layer PLN2 on a side of the relay electrode RE remote from the first planarization layer PLN1; a pixel definition layer PDL defining a subpixel opening and located on a side of the second planarization layer PLN2 remote from the base substrate BS; and a light-emitting element LE in the subpixel opening. TheThe light-emitting element LE comprises an anode AD on a side of the second planarization layer PLN2 remote from the first planarization layer PLN1; a light-emitting layer EL on a side of the anode AD remote from the second planarization layer PLN2; and a cathode layer CD on a side of the light-emitting layer EL remote from the anode AD. The display device further comprises, in the display region, an encapsulation layer EN that encapsulates the dummy light-emitting element DLE and is located on a side of the cathode layer CD remote from the base substrate BS. In some embodiments, the encapsulation layer EN comprises a first inorganic encapsulation sublayer CVD1 on a side of the cathode layer CD remote from the base substrate BS, an organic encapsulation sublayer IJP on a side of the first inorganic encapsulation sublayer CVD1 remote from the base substrate BS, and a second inorganicEncapsulation sublayer CVD2 on a side of the organic encapsulation sublayer IJP remote from the first inorganic encapsulation sublayer CVD1. The display device further comprises, in the display region, a buffer layer BUF on a side of the encapsulation layer EN remote from the base substrate BS; a plurality of second electrode bridges BR2 on a side of the buffer layer BUF remote from the encapsulation layer EN; a touch insulation layer TI on a side of the plurality of second electrode bridges BR2 remote from the buffer layer BUF; a plurality of first touch electrodes TE1 on a side of the touch insulation layer TI remote from the buffer layer BUF; and an overcoat layer OC on a side of the plurality of first touch electrodes TE1 remote from the touch insulation layer TI. Optionally, the display device does not comprise the passivation layer PVX in the display region, for example, the dielectric interlayer ILD is in directContact with the first planarization layer PLN1.

[0079] With reference to Fig. 24A and Fig. 24B, the display device comprises a semiconductor material layer SML, a first gate metal layer Gate1, a second gate metal layer Gate2, a first signal line layer SLL1, and a second signal line layer SLL2. The display device further comprises an insulating layer IN between the first gate metal layer Gate1 and the second gate metal layer Gate2; an interlayer dielectric layer ILD between the second gate metal layer Gate2 and the first signal line layer SLL1; and at least one passivation layer PVX or a planarization layer PLN between the first signal line layer SLL1 and the second signal line layer SLL2.

[0080] In another aspect, the present disclosure provides a method of fabricating a touch structure. In some embodiments, the method comprises forming a plurality of first mesh electrodes and forming a plurality of second mesh electrodes. Optionally, forming each of the plurality of first mesh electrodes comprises forming a plurality of first mesh blocks sequentially electrically connected along a first direction. Optionally, two adjacent first mesh blocks of the plurality of first mesh blocks are electrically connected to each other by a respective first conductive bridge of the plurality of first conductive bridges. Optionally, the plurality of first conductive bridges are arranged in an array. Optionally, forming the plurality of first mesh blocks comprises forming a boundary mesh block adjacent to a cut-off region where the touch structure is missing.Optionally, the method further comprises forming a shifted conductive bridge shifted from the array of the plurality of first conductive bridges.

[0081] The foregoing description of embodiments of the invention has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed or to exemplary embodiments. Therefore, the foregoing description should be considered illustrative rather than restrictive. Obviously, many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to explain the principles of the invention and its best practical application, and to enable those skilled in the art to understand various embodiments of the invention as well as various modifications suitable for a specific use or implementation contemplated.The scope of the invention is to be defined by the appended claims and their equivalents, in which all terms are to be used in their broadest meaningful sense unless otherwise specified. Therefore, the term "the invention (the present invention)" or the like does not necessarily imply a limitation of the scope of the claims to a particular embodiment, and reference to exemplary embodiments of the invention does not imply a limitation of the invention, nor is such a limitation to be inferred. The invention is limited only by the spirit and scope of the appended claims. Furthermore, reference may be made to the use of "first," "second," etc., before a noun or element in these claims.These terms are intended as nomenclature and should not be construed as limiting the number of elements modified by this nomenclature unless a specific number has been stated. All described advantages and benefits may not apply to all embodiments of the invention. It is understood that those skilled in the art may modify the described embodiments without departing from the scope of the invention as defined by the appended claims. Furthermore, no element or component in the present disclosure is intended to be disclosed to the public, regardless of whether the element or component is expressly recited in the appended claims.

Claims

[1] A touch display panel comprising a plurality of first mesh electrodes and a plurality of second mesh electrodes; wherein each of the plurality of first mesh electrodes comprises a plurality of first mesh blocks that are electrically connected one after the other along a first direction; two adjacent first mesh blocks of the plurality of first mesh blocks are electrically connected to each other by a respective first conductive bridge of a plurality of first conductive bridges; and the plurality of first conductive bridges are arranged in an array; wherein the plurality of first mesh blocks comprise boundary mesh blocks adjacent to a cut-off region in which no contact structure is present; and the touch display panel comprises a displaced conductive bridge displaced from the array of the plurality of first conductive bridges. [2] The touch display panel of claim 1, wherein the shifted conductive bridge is shifted from an array position to a non-array position; the array position and the positions of the plurality of first conductive bridges are arranged in multiple rows and multiple columns; and the non-array position is shifted from the array of multiple rows and multiple columns. [3] The touch display panel according to claim 2, wherein the array position is a position where the inclination of the touch display panel is greater than an average inclination of the touch display panel; and the non-array position is a position where the inclination of the touch display panel is smaller than the inclination of the touch display panel at the array position. [4] The touch display panel according to claim 2, wherein the structure of the boundary mesh block differs from the structure of at least one first mesh block of the plurality of first mesh blocks in that the boundary mesh block includes an extended part at the array position; and the mesh lines of the extended part are in the same layer as the mesh lines of the boundary mesh block outside the extended part and in a different layer than a first conductive bridge electrically connected to the at least one first mesh block. [5] The touch display panel according to any one of claims 1 to 4, wherein the cut-off area is a window area; the window area is at least partially surrounded by a touch area; and the touch structure is limited to the touch area and is not present in the window area. [6] The touch display panel of claim 5, wherein the boundary mesh block includes an extended portion; and the plurality of first conductive bridges are located in the same array including a plurality of rows and a plurality of columns; and the extended portion and the plurality of first conductive bridges are each located at a plurality of array positions of the same array. [7] The touch display panel according to claim 5, wherein the boundary mesh block comprises an extended part; where the displaced conductive bridge comprises: - one or more first conductive extensions electrically connected to the extended portion, the one or more first conductive extensions extending away from the extended portion toward the window region; and - one or more first conductive plates connected to the one or more first conductive extensions, the one or more first conductive plates at least partially surrounding the window area; wherein the one or more first conductive plates are electrically connected to a mesh block of the plurality of first mesh electrodes, the mesh block being located on a different side of the window region than the boundary mesh block. [8] The touch display panel of claim 7, wherein the one or more first conductive extensions are located in a first mesh line layer; the one or more first conductive plates, the boundary mesh block, the mesh block, the mesh blocks of the plurality of first mesh electrodes, and the mesh blocks of the plurality of second mesh electrodes are located in a second mesh line layer; and the touch display panel further comprises a touch insulation layer between the first mesh line layer and the second mesh line layer. [9] The touch display panel of claim 7, wherein the displaced conductive bridge further comprises a first capacitance-compensating conductive plate along an edge of the extended portion adjacent the window region; and the first capacitance-compensating conductive plate is directly connected to at least one mesh line of the extended portion and is connected to the one or more first conductive extensions via a via extending through the touch isolation layer. [10] The touch display panel according to any one of claims 7 to 9, wherein the boundary mesh block separates two adjacent second mesh blocks of a plurality of second mesh blocks of a respective one of the plurality of second mesh electrodes from each other; and a first adjacent second mesh block of the two adjacent second mesh blocks, the boundary mesh block, and a second adjacent second mesh block of the two adjacent second mesh blocks successively surround parts of a periphery of the window area. [11] The touch display panel according to claim 10, wherein each of the plurality of second mesh electrodes comprises a second capacitance compensating conductive plate, a second conductive plate, and a third capacitance compensating conductive plate connected in series; the second capacitance-compensating conductive plate is directly connected to at least one mesh line of the first adjacent second mesh block; the third capacitance-compensating conductive plate is directly connected to at least one mesh line of the second adjacent second mesh block; and the second conductive plate connects the second capacitance-compensating conductive plate to the third capacitance-compensating conductive plate. [12] The touch display panel according to claim 11, wherein the second capacitance compensating conductive plate, the second conductive plate and the third capacitance compensating conductive plate are parts of a unitary structure. [13] The touch display panel of claim 11, wherein the one or more first conductive extensions are located in the first mesh layer; the second capacitance compensating conductive plate, the second conductive plate, and the third capacitance compensating conductive plate are located in the second mesh layer; and the one or more first conductive extensions span the second conductive plate. [14] The touch display panel of claim 10, wherein, on a first side, the first adjacent second mesh block, the boundary mesh block, and the second adjacent second mesh block are adjacent to the window area; on a second side, the first adjacent second mesh block, the boundary mesh block, and the second adjacent second mesh block are located along an edge of the touch structure; the touch display panel further comprises: - a first track line electrically connecting the boundary mesh block to an integrated touch circuit, the first track line being directly connected to at least one mesh line of the boundary mesh block; - one or more second conductive extensions electrically connected to the first adjacent second mesh block, the one or more second conductive extensions extending from the first adjacent second mesh block away from the window region; - one or more third conductive extensions electrically connected to the second adjacent second mesh block, the one or more third conductive extensions extending from the second adjacent second mesh block away from the window region; and - a connecting line connecting the one or more second conductive extensions to the one or more third conductive extensions. [15] The touch display panel of claim 14, wherein the one or more second conductive extensions, the connection line, and the one or more third conductive extensions are parts of a unitary structure in the first mesh layer; and the first trace line, the first adjacent second mesh block, the boundary mesh block, and the second adjacent second mesh block are located in the second mesh layer. [16] The touch display panel according to any one of claims 1 to 4, wherein the boundary mesh block is located in a corner region of the touch display panel; and the cut-off region is a region outside the touch structure and adjacent to the corner region. [17] The touch display panel of claim 16, wherein the displaced conductive bridge comprises one or more fourth conductive extensions electrically connected to the boundary mesh block, the one or more fourth conductive extensions extending away from the boundary mesh block toward the area outside the touch structure; and the one or more fourth conductive extensions electrically connected to a second trace line, the second trace line electrically connected to a touch integrated circuit. [18] The touch display panel of claim 17, wherein the shifted conductive bridge further comprises a fourth capacitance compensating conductive plate directly connected to at least one mesh line of the boundary mesh block; the fourth capacitance-compensating conductive plate is electrically connected to the one or more fourth conductive extensions; the one or more fourth conductive extensions are located in the first mesh line layer; and the boundary mesh block, the fourth capacitance compensating conductive plate and the second track line are located in the second mesh line layer. [19] The touch display panel according to claim 17, further comprising a third trace line electrically connected to a mesh block of the plurality of second mesh electrodes; wherein the third track line is located between the second track line and the boundary mesh block; and the one or more fourth conductive extensions span the third track line. [20] The touch display panel according to any one of claims 1 to 19, wherein a line width of mesh lines of the shifted conductive bridge is larger than a line width of mesh lines of the plurality of first conductive bridges. [21] A display device comprising a display panel and a touch display panel according to any one of claims 1 to 20.

Images