Touch control structure and display device

Abstract

A touch structure is provided. The touch structure includes a plurality of touch electrodes in a touch area and a plurality of touch signal lines in a peripheral area. Each of the plurality of touch signal lines includes a double-layer structure in a double-layer area and a single-layer structure in a single-layer area. The double-layer area and the single-layer area in the plurality of touch signal lines in the peripheral area are connected to a first sub-region of an integrated circuit. A plurality of adjacent double-layer structures in the double-layer area are respectively connected to a plurality of adjacent single-layer structures in the single-layer area. At least two of the plurality of adjacent single-layer structures are respectively located in a first layer and a second layer. The touch structure further includes a touch insulating layer located between the first layer and the second layer.

Description

Technical Field

[0001] The present invention relates to the field of display technologies, and particularly to a touch control structure and a display device. Background Art

[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. The on-cell touch panel provides high touch control accuracy. The on-cell touch panel can be divided into a single-layer-on-cell (SLOC) touch panel and a multi-layer-on-cell (MLOC) touch panel. In particular, multi-touch can be implemented in an MLOC touch panel with superior touch control accuracy and blanking effect. Summary of the Invention

[0003] In one aspect, the present disclosure provides a touch control structure, which includes a plurality of touch electrodes in a touch control area and a plurality of touch signal lines in a peripheral area; wherein, each of the plurality of touch signal lines includes a double-layer structure in a double-layer area and a single-layer structure in a single-layer area, wherein the double-layer area and the single-layer area in the plurality of touch signal lines in the peripheral area are connected to a first sub-region of an integrated circuit, the first sub-region having a first shortest width along a direction from the touch control area to the first sub-region, the first shortest width being greater than the shortest width of at least one sub-region among the sub-regions of the peripheral area other than the first sub-region; a plurality of adjacent double-layer structures in the double-layer area are respectively connected to a plurality of adjacent single-layer structures in the single-layer area; at least two of the plurality of adjacent single-layer structures are respectively located in a first layer and a second layer; and the touch control structure further includes a touch insulation layer located between the first layer and the second layer.

[0004] Optionally, the first shortest width is greater than the shortest width of any one sub-region among the sub-regions of the peripheral area other than the first sub-region.

[0005] Optionally, each double-layer structure includes a first portion in the first layer and a second portion in the second layer; a first adjacent corresponding single-layer structure in the first layer is connected to a corresponding first portion of a first adjacent double-layer structure; and a second adjacent corresponding single-layer structure in the second layer is connected to a corresponding second portion of a second adjacent double-layer structure.

[0006] Optionally, the first portion and the second portion are connected by a connection through-hole extending through the touch insulation layer.

[0007] Optionally, a plurality of first bilayer structures of a plurality of touch signal lines among the plurality of touch signal lines are respectively aggregated in a first region; a plurality of first single-layer structures of the plurality of touch signal lines among the plurality of touch signal lines are respectively aggregated in a second region; the plurality of first bilayer structures are substantially parallel to each other and respectively extend along a first direction; the plurality of first single-layer structures are substantially parallel to each other and respectively extend along a second direction; at least two of the plurality of first single-layer structures are respectively located in the first layer and the second layer; and the first direction and the second direction are different from each other and intersect at an angle greater than zero.

[0008] Optionally, a plurality of connection points respectively connecting the plurality of first bilayer structures and the plurality of first single-layer structures are arranged along a seventh direction; and the second direction and the seventh direction intersect at an angle within a range of 6 degrees to 15 degrees.

[0009] Optionally, a plurality of first single-layer structures of a plurality of touch signal lines among the plurality of touch signal lines are respectively aggregated in a second region; a plurality of second single-layer structures of the plurality of touch signal lines among the plurality of touch signal lines are respectively aggregated in a third region; the plurality of second single-layer structures are respectively connected to the plurality of first single-layer structures; the plurality of first single-layer structures are substantially parallel to each other and respectively extend along a second direction; the plurality of second single-layer structures are substantially parallel to each other and respectively extend along a third direction; at least two of the plurality of second single-layer structures are respectively located in the first layer and the second layer; and the second direction and the third direction are different from each other and intersect at an angle greater than zero.

[0010] Optionally, the second direction and the third direction intersect at an angle within a range of 15 degrees to 25 degrees.

[0011] Optionally, a plurality of connection points respectively connecting the plurality of first single-layer structures and the plurality of second single-layer structures are arranged along a fourth direction; and the second direction and the fourth direction intersect at an angle within a range of 20 degrees to 40 degrees.

[0012] Optionally, a plurality of second single-layer structures of a plurality of touch signal lines among the plurality of touch signal lines are respectively aggregated in a third region; a plurality of second double-layer structures of the plurality of touch signal lines among the plurality of touch signal lines are respectively aggregated in a fourth region; the plurality of second single-layer structures are substantially parallel to each other and respectively extend along a third direction; the plurality of second double-layer structures are substantially parallel to each other and respectively extend along a fifth direction; at least two of the plurality of second single-layer structures are respectively located in the first layer and the second layer; the plurality of second single-layer structures are respectively connected to the plurality of second double-layer structures; and a plurality of second connection points respectively connecting the plurality of second single-layer structures and the plurality of second double-layer structures are arranged along a sixth direction.

[0013] Optionally, the sixth direction is substantially parallel to the second direction.

[0014] Optionally, the touch structure includes through holes extending through the touch insulating layer at respective second connection points, and materials in the second layer are connected to materials in the first layer through the through holes.

[0015] Optionally, a plurality of third double-layer structures of a plurality of touch signal lines among the plurality of touch signal lines are respectively aggregated in a fifth region; a plurality of fourth double-layer structures of the plurality of touch signal lines among the plurality of touch signal lines are respectively aggregated in a sixth region; a plurality of third single-layer structures of the plurality of touch signal lines among the plurality of touch signal lines are respectively aggregated in a seventh region; a corresponding one of the plurality of third single-layer structures is a half-ring structure connecting a corresponding one of the plurality of third double-layer structures and a corresponding one of the plurality of fourth double-layer structures; the half-ring structure includes two parallel portions respectively extending along the second direction and a connecting portion connecting the two parallel portions; at least two of the plurality of third single-layer structures are respectively located in the first layer and the second layer; the plurality of third double-layer structures are substantially parallel to each other and respectively extend along a first direction; the plurality of fourth double-layer structures are substantially parallel to each other and respectively extend along the first direction; the first direction and the second direction are different from each other and intersect at an angle greater than zero.

[0016] Optionally, a plurality of fourth single-layer structures of the plurality of touch signal lines among the plurality of touch signal lines are respectively aggregated in an eighth region; the plurality of fourth single-layer structures are respectively connected to the plurality of third double-layer structures; the plurality of fourth single-layer structures are substantially parallel to each other and respectively extend along the second direction; and the plurality of fourth single-layer structures are at least a subset of the plurality of first single-layer structures.

[0017] Optionally, the plurality of touch electrodes include a plurality of first mesh electrodes arranged in a plurality of rows and a plurality of second mesh electrodes arranged in a plurality of columns; and the plurality of first mesh electrodes and the plurality of second mesh electrodes are in the second layer.

[0018] Optionally, the touch structure further includes: a plurality of touch electrode bridges in the first layer; and through holes extending through the touch insulating layer; wherein the plurality of touch electrode bridges respectively extend through the through holes to respectively connect adjacent second grid blocks in corresponding columns of the plurality of columns of the second mesh electrodes.

[0019] Optionally, the plurality of touch signal lines include: a plurality of first touch signal lines respectively connected to the plurality of first mesh electrodes; a plurality of second touch signal lines respectively connected to first terminals of the plurality of second mesh electrodes; and a plurality of third touch signal lines respectively connected to second terminals of the plurality of second mesh electrodes.

[0020] Optionally, the touch structure is restricted to a touch area and does not exist in a window area at least partially surrounded by the touch area; wherein the window-crossing rows of the plurality of first mesh electrodes include: a first grid block and a second grid block respectively located on a first side and a second side of the window area; a first conductive plate directly connected to a plurality of grid lines of the first grid block; a second conductive plate directly connected to a plurality of grid lines of the second grid block; and a first conductive bridge connecting the first conductive plate and the second conductive plate; wherein the first conductive plate, the second conductive plate and the first conductive bridge respectively surround a first part, a second part and a third part of the periphery of the window area; the first conductive plate and the second conductive plate are in the second layer; and the first conductive bridge is in the first layer.

[0021] Optionally, each of the plurality of touch signal lines has a line width in the range of 2.5 μm to 4.5 μm; adjacent single-layer structures are spaced apart by a shortest distance in the range of 1.1 μm to 3.1 μm in the orthographic projection on the substrate; adjacent single-layer structures in the first layer are spaced apart by a shortest distance in the range of 4.7 μm to 10.7 μm in the orthographic projection on the substrate; and adjacent single-layer structures in the second layer are spaced apart by a shortest distance in the range of 4.7 μm to 10.7 μm in the orthographic projection on the substrate.

[0022] Optionally, at least two adjacent single-layer structures in the first layer and the second layer are respectively electrically connected to touch electrodes in adjacent rows.

[0023] Optionally, the first shortest width is less than the reference first shortest width of the corresponding first sub-region in the reference touch structure, and the touch signal lines in the reference touch structure have a double-layer structure in the entire peripheral region.

[0024] In another aspect, the present disclosure provides a display device, including: a display panel; a touch structure described herein or manufactured by the method described herein; and an integrated circuit.

[0025] Optionally, the display panel includes: a plurality of light-emitting elements; a packaging layer on the plurality of light-emitting elements, wherein the packaging layer includes a first inorganic packaging layer, an organic packaging layer on a side of the first inorganic packaging layer away from the plurality of light-emitting elements, a second inorganic packaging layer on a side of the organic packaging layer away from the first inorganic packaging layer; and a buffer layer on a side of the second inorganic packaging layer away from the organic packaging layer; wherein the touch insulating layer is on a side of the buffer layer away from the second inorganic packaging layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] According to various disclosed embodiments, the following drawings are merely examples for illustrative purposes and are not intended to limit the scope of the present invention.

[0027] Figure 1A A schematic diagram showing the structure of a touch structure in some embodiments according to the present disclosure.

[0028] Figure 1B A schematic diagram showing a touch region and a peripheral region in a touch structure in some embodiments according to the present disclosure.

[0029] Figure 2 A partial enlarged view of a touch structure in a region transition from a touch region to a peripheral region in some embodiments according to the present disclosure.

[0030] Figure 3A is Figure 2 A further enlarged view of the enlarged region in.

[0031] Figure 3B is along Figure 3A The cross-sectional view taken along line A-A' in.

[0032] Figure 3C is along Figure 3A The cross-sectional view taken along line B-B' in.

[0033] Figure 3D is along Figure 3A The cross-sectional view taken along line C-C' in.

[0034] Figure 3EIt is a cross-sectional view of a plurality of adjacent single-layer structures ASLS in a single-layer region according to some embodiments of the present disclosure.

[0035] Figure 3F It is a cross-sectional view of a plurality of adjacent single-layer structures ASLS in a single-layer region according to some embodiments of the present disclosure.

[0036] Figure 4 It is a partial enlarged view of a touch structure in a region transition from a touch region to a peripheral region according to some embodiments of the present disclosure.

[0037] Figure 5 It is Figure 4 a further enlarged view of the first enlarged region in.

[0038] Figure 6 It is a cross-sectional view along Figure 5 the D-D' line in.

[0039] Figure 7 It is Figure 4 a further enlarged view of the second enlarged region in.

[0040] Figure 8 It is Figure 7 a further enlarged view of the third enlarged region in.

[0041] Figure 9 It is a cross-sectional view along Figure 8 the E-E' line in.

[0042] Figure 10 It is a cross-sectional view along Figure 8 the F-F' line in.

[0043] Figure 11 It is a partial enlarged view of a touch structure in a region transition from a touch region to a peripheral region according to some embodiments of the present disclosure.

[0044] Figure 12 It is Figure 11 a further enlarged view of.

[0045] Figure 13 It shows a corresponding one of a plurality of third single-layer structures, which connects a corresponding one of a plurality of third double-layer structures and a corresponding one of a plurality of fourth double-layer structures.

[0046] Figure 14 It is a cross-sectional view along Figure 12 the G-G' line in.

[0047] Figure 15 It is a cross-sectional view along Figure 1A the H-H' line in.

[0048] Figure 16 is a cross-sectional view along the I-I' line in Figure 1A .

[0049] Figure 17 is a schematic diagram showing a touch structure in some embodiments according to the present disclosure.

[0050] Figure 18A is a schematic diagram showing a window area in some embodiments according to the present disclosure.

[0051] Figure 18B is an enlarged view of a touch structure around a window area in some embodiments according to the present disclosure.

[0052] Figure 18C is a further enlarged view of a touch structure around a window area in some embodiments according to the present disclosure.

[0053] Figure 19 is a cross-sectional view of a display panel in some embodiments according to the present disclosure.

[0054] Figure 20 is a schematic diagram showing a display area and a peripheral area in a display device in some embodiments according to the present disclosure. Detailed Embodiments

[0055] The present disclosure will now be described more specifically with reference to the following embodiments. It should be noted that the following description of some embodiments presented herein is for illustrative and descriptive purposes only. It is not exhaustive or limited to the exact forms disclosed.

[0056] The present disclosure particularly provides a touch structure and a display device that substantially eliminate one or more problems caused by the limitations and disadvantages of the prior art. In one aspect, the present disclosure provides a touch structure. In some embodiments, the touch structure includes a plurality of touch electrodes in a touch area and a plurality of touch signal lines in a peripheral area. Each of the plurality of touch signal lines includes a double-layer structure in a double-layer area and a single-layer structure in a single-layer area. Optionally, the double-layer area and the single-layer area in the plurality of touch signal lines in the peripheral area are connected to a first sub-region of an integrated circuit, and the first sub-region has a first shortest width along a direction from the touch area to the first sub-region, and the first shortest width is greater than the shortest width of at least one sub-region among the sub-regions other than the first sub-region in the peripheral area. Optionally, a plurality of adjacent double-layer structures in the double-layer area are respectively connected to a plurality of adjacent single-layer structures in the single-layer area. Optionally, at least two of the plurality of adjacent single-layer structures are respectively located in a first layer and a second layer. Optionally, the touch structure further includes a touch insulating layer located between the first layer and the second layer.

[0057] Figure 1A A schematic diagram showing the structure of a touch structure according to some embodiments of the present disclosure. Refer to Figure 1A , in some embodiments, the touch structure includes 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. Adjacent rows among the plurality of rows are isolated from each other. Adjacent columns among the plurality of columns are isolated from each other. Optionally, the touch structure is a mutual capacitance type 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 scanning electrodes. Optionally, the plurality of first mesh electrodes TE1 are a plurality of touch scanning electrodes, and the plurality of second mesh electrodes TE2 are a plurality of touch sensing electrodes.

[0058] In some embodiments, the plurality of touch signal lines include a plurality of first touch signal lines SGL1 respectively connected to the plurality of first mesh electrodes TE1; a plurality of second touch signal lines SGL2 respectively connected to the first terminals T1 of the plurality of second mesh electrodes TE2; and a plurality of third touch signal lines SGL3 respectively connected to the second terminals T2 of the plurality of second mesh electrodes TE2. Optionally, a corresponding one of the plurality of first mesh electrodes TE1 is connected to a corresponding one of the plurality of first touch signal lines SGL1. Optionally, a corresponding one of the plurality of second mesh electrodes TE2 is connected to a corresponding one of the plurality of second touch signal lines SGL2 and is connected to a corresponding one of the plurality of third touch signal lines SGL3.

[0059] In some embodiments, each of the first mesh electrodes among the plurality of first mesh electrodes TE1 extends along a second direction DR2; and each of the second mesh electrodes among the plurality of second mesh electrodes TE2 extends along a first direction DR1. Optionally, the first direction DR1 and the second direction DR2 are two non-parallel directions, for example, the first direction DR1 and the second direction DR2 intersect each other. Optionally, the first direction DR1 and the second direction DR2 are perpendicular to each other. Optionally, the first direction DR1 and the second direction DR2 intersect each other at a non-90-degree inclination angle.

[0060] In some embodiments, a plurality of touch electrodes (for example, the plurality of first mesh electrodes TE1 and the plurality of second mesh electrodes TE2) are located in a touch control area TCA, and a plurality of touch signal lines (for example, the plurality of first touch signal lines SGL1, the plurality of second touch signal lines SGL2, and the plurality of third touch signal lines SGL3) are located in a peripheral area PA outside the touch control area TCA.

[0061] Figure 1B A schematic diagram showing a touch control area and a peripheral area in a touch structure according to some embodiments of the present disclosure. Refer to Figure 1B, in some embodiments, the peripheral region PA includes a first sub-region PA1 on a first side S1 of the touch control region TCA, a second sub-region PA2 on a second side S2 of the touch control region TCA, a third sub-region PA3 on a third side S3 of the touch control region TCA, and a fourth sub-region PA4 on a fourth side S4 of the touch control region TCA. Optionally, the first side S1 and the fourth side S4 are opposite to each other. Optionally, the second side S2 and the third side S3 are opposite to each other. Optionally, the first sub-region PA1 is a sub-region where a plurality of first touch signal lines SGL1, a plurality of second touch signal lines SGL2, and a plurality of third touch signal lines SGL3 are connected to an integrated circuit (e.g., an integrated touch control circuit).

[0062] In some embodiments, the first sub-region PA1 includes a side region SR and one or more corner regions (e.g., a first corner region CR1 and a second corner region CR2). The one or more corner regions are respectively located at the corners of the touch control structure. The one or more corner regions respectively connect the side region SR to one or more adjacent sub-regions of the peripheral region PA. For example, the first corner region CR1 connects the side region SR to the second sub-region PA2, and the second corner region CR2 connects the side region SR to the third sub-region PA3.

[0063] In some embodiments, the first sub-region PA1 has a first shortest width w1 in a direction from the touch control region TCA to the first sub-region PA1. Optionally, the second sub-region PA2 has a second shortest width w2 in a direction from the touch control region TCA to the second sub-region PA2. Optionally, the third sub-region PA3 has a third shortest width w3 in a direction from the touch control region TCA to the third sub-region PA3. Optionally, the fourth sub-region PA4 has a fourth shortest width w4 in a direction from the touch control region TCA to the fourth sub-region PA4. In some embodiments, the first shortest width w1 is greater than at least one of the other shortest widths, e.g., greater than at least one of the second shortest width w2, the third shortest width w3, or the fourth shortest width w4. Optionally, the first shortest width w1 is greater than any one of the other shortest widths, e.g., greater than the second shortest width w2, greater than the third shortest width w3, and greater than the fourth shortest width w4.

[0064] Figure 2 is a partial enlarged view of the touch control structure in the region transition from the touch control region to the peripheral region according to some embodiments of the present disclosure. Refer to Figure 2, in some embodiments, the touch structure includes a plurality of touch signal lines. In some embodiments, each of the plurality of touch signal lines includes a double-layer structure DLS in the double-layer region DLR and a single-layer structure SLS in the single-layer region SLR. The double-layer region DLR and the single-layer region SLR are in the peripheral region of the touch structure. In some embodiments, the double-layer region DLR and the single-layer region SLR are in the first sub-region PA1.

[0065] In some embodiments, the touch structure includes a plurality of adjacent double-layer structures and a plurality of adjacent single-layer structures. In some embodiments, at least two of the plurality of adjacent single-layer structures are respectively in the first layer and the second layer. Figure 3A is Figure 2 a further enlarged view of the enlarged region in. Figure 3B is along Figure 3A the cross-sectional view taken along the line A-A' in. Figure 3C is along Figure 3A the cross-sectional view taken along the line B-B' in. Figure 3D is along Figure 3A the cross-sectional view taken along the line C-C' in. Refer to Figure 2 , Figures 3A to 3D , in the double-layer region DLR, the plurality of adjacent double-layer structures ADLS are respectively connected to the plurality of adjacent single-layer structures ASLS in the single-layer region SLR. Refer to Figures 3A to 3D , in some embodiments, at least two of the plurality of adjacent single-layer structures are respectively in the first layer SL1 and the second layer SL2. In Figures 3A to 3D one example shown, the plurality of adjacent single-layer structures ASLS are alternately in the first layer SL1 and the second layer SL2. In the context of the present disclosure, the plurality of adjacent single-layer structures ASLS are part of the touch signal lines. For example, refer to Figure 1A , Figure 2 , Figures 3A to 3D , at least two adjacent single-layer structures respectively in the first layer SL1 and the second layer SL2 are electrically connected to the touch electrodes of adjacent rows.

[0066] In Figures 3A to 3C one example shown, the touch structure includes a buffer layer BUF on the second inorganic encapsulation sub-layer CVD2, and the second inorganic encapsulation sub-layer CVD2 is a sub-layer of the encapsulation layer for encapsulating the light-emitting elements in the display device having the touch structure. In some embodiments, the touch structure further includes a first layer SL1 on the side of the buffer layer BUF away from the second inorganic encapsulation sub-layer CVD2, a touch insulation layer TI on the side of the first layer SL1 away from the buffer layer BUF, a second layer SL2 on the side of the touch insulation layer TI away from the first layer SL1, and a protection layer OC on the side of the second layer SL2 away from the touch insulation layer TI.

[0067] In some embodiments, each bilayer structure includes a first portion P1 in a first layer SL1 and a second portion P2 in a second layer SL2, as Figures 3A to 3C shown. As Figure 3B shown, a first adjacent corresponding single-layer structure ASLS1 in the second layer SL2 is connected to a corresponding second portion P2 of a first adjacent bilayer structure ADLS1. A second adjacent corresponding single-layer structure ASLS2 in the first layer SL1 is connected to a corresponding first portion P1 of a second adjacent bilayer structure ADLS2. Optionally, the first adjacent corresponding single-layer structure ASLS1 in the second layer SL2 is continuously connected to the corresponding second portion P2 of the first adjacent bilayer structure ADLS1 to form an integral structure. Optionally, the second adjacent corresponding single-layer structure ASLS2 in the first layer SL1 is continuously connected to the corresponding first portion P1 of the second adjacent bilayer structure ADLS2 to form an integral structure.

[0068] Referring Figure 2 to Figure 3D and Figure 2 in Figure 3D some embodiments, at least two of a plurality of adjacent single-layer structures ASLS are respectively located in the first layer SL1 and the second layer SL2. In

[0069] an example shown, a plurality of adjacent single-layer structures ASLS are alternately in the first layer SL1 and the second layer SL2. The inventors of the present disclosure have found that by having such a structure, the pitch of a plurality of touch signal lines can be significantly reduced, and a display device having this touch structure can have a much narrower peripheral area. In one example, the width from the display area to the edge peripheral area of the display panel can be reduced from 1.36 mm to 1.076 mm. In another example, the distance between the display area and a signal line farther from the display area can be reduced from 0.435 mm to 0.331 mm. In addition, signal lines in the same layer (e.g., single-layer structures in the first layer SL1) can be further spaced apart from each other to avoid short circuits. By further spacing apart the single-layer structures in the same layer, the complexity involved in manufacturing a mask for patterning a plurality of signal lines is also reduced, and the etching process is less likely to produce defects.For example, the first sub-region of the peripheral region having the above-mentioned double-layer region and single-layer region has a first shortest width in a direction from the touch control region to the first sub-region. The first shortest width can be reduced from 1.36 mm to 1.076 mm. The reference value of 1.36 mm can be the reference first shortest width of the corresponding first sub-region of the peripheral region in a reference touch control structure that does not have the double-layer region and single-layer region of the present disclosure. In one example, the touch signal lines of the reference touch control structure adopt a double-layer structure throughout the peripheral region. By forming the touch signal lines into a complex structure discussed in the present disclosure, the first shortest width in the first sub-region can be reduced compared to the touch signal lines in the reference touch control structure.

[0070] For example, generally, a minimum pitch of 7.5 μm is required to avoid defects such as short circuits and etching defects. By alternately arranging a plurality of adjacent single-layer structures ASLS in the first layer SL1 and the second layer SL2, the minimum pitch can be significantly reduced to 5.6 μm or less. In addition, the signal lines in the same layer can be spaced apart, for example, from 7.5 μm to 11.2 μm or more.

[0071] In some embodiments, each of the plurality of touch signal lines has a line width in the range of 2.5 μm to 4.5 μm, for example, 2.5 μm to 3.0 μm, 3.0 μm to 3.5 μm, 3.5 μm to 4.0 μm, or 4.0 μm to 4.5 μm. Optionally, each of the plurality of touch signal lines has a line width of 3.5 μm. In some embodiments, each of the plurality of adjacent single-layer structures ASLS has a line width in the range of 2.5 μm to 4.5 μm (shown as lw in Figure 3D ), for example, 2.5 μm to 3.0 μm, 3.0 μm to 3.5 μm, 3.5 μm to 4.0 μm, or 4.0 μm to 4.5 μm. Optionally, each of the plurality of adjacent single-layer structures ASLS has a line width of 3.5 μm. In some embodiments, each of the plurality of adjacent double-layer structures ADLS has a line width in the range of 2.5 μm to 4.5 μm, for example, 2.5 μm to 3.0 μm, 3.0 μm to 3.5 μm, 3.5 μm to 4.0 μm, or 4.0 μm to 4.5 μm. Optionally, each of the plurality of adjacent double-layer structures ADLS has a line width of 3.5 μm.

[0072] Reference Figure 3D, in some embodiments, the positive projections of adjacent single-layer structures on the substrate substrate are spaced apart by a shortest distance d, and the shortest distance d ranges from 1.1 μm to 3.1 μm. For example, 1.1 μm to 1.6 μm, 1.6 μm to 2.1 μm, or 2.6 μm to 3.1 μm. Optionally, the positive projections of adjacent single-layer structures on the substrate substrate are spaced apart by a shortest distance of 2.1 μm. In some embodiments, the positive projections of adjacent single-layer structures in the first layer SL1 are spaced apart by a shortest distance d1, and the shortest distance d1 ranges from 4.7 μm to 10.7 μm, such as 4.7 μm to 5.7 μm, 5.7 μm to 6.7 μm, 6.7 μm to 7.7 μm, 7.7 μm to 8.7 μm, 8.7 μm to 9.7 μm, or 9.7 μm to 10.7 μm. Optionally, the positive projections of adjacent single-layer structures in the first layer SL1 are spaced apart by a shortest distance of 7.7 μm. In some embodiments, the positive projections of adjacent single-layer structures in the second layer SL2 are spaced apart by a shortest distance d2, and the shortest distance d2 ranges from 4.7 μm to 10.7 μm, such as 4.7 μm to 5.7 μm, 5.7 μm to 6.7 μm, 6.7 μm to 7.7 μm, 7.7 μm to 8.7 μm, 8.7 μm to 9.7 μm, or 9.7 μm to 10.7 μm. Optionally, the positive projections of adjacent single-layer structures in the second layer SL2 are spaced apart by a shortest distance of 7.7 μm.

[0073] Reference Figure 3D , optionally, the positive projections of adjacent single-layer structures in the first layer SL1 and the second layer SL2 do not overlap with each other.

[0074] Figure 3E is a cross-sectional view of a plurality of adjacent single-layer structures ASLS in a single-layer region according to some embodiments of the present disclosure. Reference Figure 3E , in some embodiments, the positive projections of adjacent single-layer structures among the plurality of adjacent single-layer structures ASLS are directly adjacent to each other on the substrate substrate.

[0075] Figure 3F is a cross-sectional view of a plurality of adjacent single-layer structures ASLS in a single-layer region according to some embodiments of the present disclosure. Reference Figure 3F , in some embodiments, the positive projections of adjacent single-layer structures among the plurality of adjacent single-layer structures ASLS at least partially overlap with each other.

[0076] Reference Figures 3A to 3C , in some embodiments, the first part P1 and the second part P2 of each double-layer structure are connected by a connection through-hole cv extending through the touch insulation layer TI.

[0077] In some embodiments, the orthographic projections of adjacent double-layer structures on the substrate are spaced apart by a shortest distance d, and the shortest distance d ranges from 3.0 μm to 5.0 μm, such as 3.0 μm to 3.5 μm, 3.5 μm to 4.0 μm, 4.0 μm to 4.5 μm, or 4.5 μm to 5.0 μm. Optionally, the orthographic projections of adjacent double-layer structures on the substrate are spaced apart by a shortest distance of 4.0 μm.

[0078] Figure 4 FIG. is a partial enlarged view of the touch structure according to some embodiments of the present disclosure in the regional transition from the touch area to the peripheral area. Figure 5 is Figure 4 a further enlarged view of the first enlarged area in. Refer to Figure 4 and Figure 5 , in some embodiments, a plurality of first double-layer structures MDLS1 of a plurality of (multiple) touch signal lines among the plurality of touch signal lines are respectively aggregated in the first area R1; a plurality of first single-layer structures MSLS1 of a plurality of touch signal lines among the plurality of touch signal lines are respectively aggregated in the second area R2. The plurality of first double-layer structures MDLS1 are respectively connected to the plurality of first single-layer structures MSLS1 (as discussed in conjunction with Figure 2 , Figures 3A to 3B similarly). The first area R1 and the second area R2 are directly adjacent to each other.

[0079] In some embodiments, the plurality of first double-layer structures MDLS1 and the plurality of first single-layer structures MSLS1 are parts of the same type of touch signal lines. In one example, the plurality of first double-layer structures MDLS1 and the plurality of first single-layer structures MSLS1 are parts of touch scan signal lines connected to touch scan electrodes. In another example, the plurality of first double-layer structures MDLS1 and the plurality of first single-layer structures MSLS1 are parts of touch sense signal lines connected to touch sense electrodes. In one example, the plurality of first double-layer structures MDLS1 and the plurality of first single-layer structures MSLS1 are parts of a plurality of first touch signal lines SGL1. The areas corresponding to the first area R1 and the second area R2 are represented as R1' and R2' in Figure 1A .

[0080] In some embodiments, a plurality of connection points CP3 connecting a plurality of first double-layer structures MDLS1 and a plurality of first single-layer structures MSLS1 are arranged along a seventh direction DR7. Optionally, a second direction DR2 and the seventh direction DR7 are two non-parallel directions, for example, the second direction DR2 and the seventh direction DR7 intersect each other. Optionally, the second direction DR2 and the seventh direction DR7 intersect each other at a non-90-degree inclination angle. In some embodiments, the second direction DR2 and the seventh direction DR7 intersect each other at an angle within a range of 6 degrees to 15 degrees, such as 6 degrees to 7 degrees, 7 degrees to 8 degrees, 8 degrees to 9 degrees, 9 degrees to 10 degrees, 10 degrees to 11 degrees, 11 degrees to 12 degrees, 12 degrees to 13 degrees, 13 degrees to 14 degrees, or 14 degrees to 15 degrees. Optionally, the second direction DR2 and the seventh direction DR7 intersect each other at an angle of 10.5 degrees.

[0081] Figure 6 is a cross-sectional view along the Figure 5 D-D' line in Figure 6 . Referring to Figures 3A to 3D and as described above in connection with Figure 6 , in some embodiments, in the second region R2, at least two of the plurality of first single-layer structures MSLS1 are respectively in a first layer SL1 and a second layer SL2. In one example as shown in Figures 3A to 3D , in the second region R2, the plurality of first single-layer structures MSLS1 are alternately in the first layer SL1 and the second layer SL2.

[0082] In some embodiments, the plurality of first double-layer structures MDLS1 are substantially parallel to each other and respectively extend along a first direction DR1; the plurality of first single-layer structures MSLS1 are substantially parallel to each other and respectively extend along a second direction DR2. The first direction DR1 and the second direction DR2 are different from each other and intersect each other at an angle greater than zero. Optionally, the first direction DR1 and the second direction DR2 are two non-parallel directions, for example, the first direction DR1 and the second direction DR2 intersect each other. Optionally, the first direction DR1 and the second direction DR2 are perpendicular to each other. Optionally, the first direction DR1 and the second direction DR2 intersect each other at a non-90-degree inclination angle.

[0083] Figure 8 is a further enlarged schematic view of the second enlarged region in Figure 4 . Referring to Figure 4 and Figure 8, in some embodiments, a plurality of first single-layer structures MSLS1 of a plurality of touch signal lines respectively gather in a second region R2; a plurality of second single-layer structures MSLS2 of a plurality of touch signal lines respectively gather in a third region R3. The plurality of first single-layer structures MSLS1 are respectively connected to the plurality of second single-layer structures MSLS2. The second region R2 and the third region R3 are directly adjacent to each other.

[0084] In some embodiments, the plurality of first single-layer structures MSLS1 and the plurality of second single-layer structures MSLS2 are parts of touch signal lines of the same type. In one example, the plurality of first single-layer structures MSLS1 and the plurality of second single-layer structures MSLS2 are parts of touch scan signal lines connected to touch scan electrodes. In another example, the plurality of first single-layer structures MSLS1 and the plurality of second single-layer structures MSLS2 are parts of touch sense signal lines connected to touch sense electrodes. In one example, the plurality of first single-layer structures MSLS1 and the plurality of second single-layer structures MSLS2 are parts of a plurality of first touch signal lines SGL1. In one example, the plurality of first single-layer structures MSLS1 and the plurality of second single-layer structures MSLS2 are parts of a plurality of second touch signal lines SGL2. In one example, the plurality of first single-layer structures MSLS1 and the plurality of second single-layer structures MSLS2 are parts of a plurality of third touch signal lines SGL3.

[0085] In some embodiments, the plurality of first single-layer structures MSLS1 are substantially parallel to each other and respectively extend along a second direction DR2; the plurality of second single-layer structures MSLS2 are substantially parallel to each other and respectively extend along a third direction DR3. Optionally, the second direction DR2 and the third direction DR3 are two non-parallel directions, for example, the second direction DR2 and the third direction DR3 intersect with each other. Optionally, the second direction DR2 and the third direction DR3 intersect with each other at a non-90-degree inclination angle. In some embodiments, the second direction DR2 and the third direction DR3 intersect with each other at an angle within the range of 15 degrees to 25 degrees, for example, 15 degrees to 17 degrees, 17 degrees to 19 degrees, 19 degrees to 21 degrees, 21 degrees to 23 degrees, or 23 degrees to 25 degrees. Optionally, the second direction DR2 and the third direction DR3 intersect with each other at an angle of 20.03 degrees.

[0086] Figure 9 is along Figure 8 a cross-sectional view taken along the E-E' line in Figure 9 , in some embodiments, in the second region R2, at least two of the plurality of first single-layer structures MSLS1 are respectively in a first layer SL1 and a second layer SL2. In as Figure 9 and Figure 8In one example shown, in the second region R2, a plurality of first single-layer structures MSLS1 are alternately in the first layer SL1 and the second layer SL2. In some embodiments, in the third region R3, at least two of the plurality of second single-layer structures MSLS2 are respectively in the first layer SL1 and the second layer SL2. As in Figure 9 and Figure 8 In one example shown, in the third region R3, a plurality of second single-layer structures MSLS2 are alternately in the first layer SL1 and the second layer SL2.

[0087] In some embodiments, a plurality of connection points CP1 connecting the plurality of first single-layer structures MSLS1 and the plurality of second single-layer structures MSLS2 are arranged along the fourth direction DR4. Optionally, the second direction DR2 and the fourth direction DR4 are two non-parallel directions, for example, the second direction DR2 and the fourth direction DR4 intersect each other. Optionally, the second direction DR2 and the fourth direction DR4 intersect each other at a non-90-degree inclination angle. In some embodiments, the second direction DR2 and the fourth direction DR4 intersect each other at an angle in the range of 20 degrees to 40 degrees, such as 20 degrees to 25 degrees, 25 degrees to 30 degrees, 30 degrees to 35 degrees, or 35 degrees to 40 degrees. Optionally, the second direction DR2 and the fourth direction DR4 intersect each other at an angle of 30.848 degrees.

[0088] In some embodiments, referring to Figure 4 、 Figure 7 and Figure 8 , a plurality of second single-layer structures MSLS2 of a plurality of touch signal lines are respectively aggregated in the third region R3; a plurality of second double-layer structures MDLS2 of a plurality of touch signal lines are respectively aggregated in the fourth region R4. The plurality of second single-layer structures MSLS2 are respectively connected to the plurality of second double-layer structures MDLS2. The third region R3 and the fourth region R4 are directly adjacent to each other. Optionally, the third region R3 and the fourth region R4 are located in the corner region of the touch structure. For example, the regions corresponding to the third region R3 and the fourth region R4 are represented as R3' and R4' in Figure 1A .

[0089] In some embodiments, a plurality of second single-layer structures MSLS2 and a plurality of second double-layer structures MDLS2 are parts of touch signal lines of the same type. In one example, the plurality of second single-layer structures MSLS2 and the plurality of second double-layer structures MDLS2 are parts of touch scan signal lines connected to touch scan electrodes. In another example, the plurality of second single-layer structures MSLS2 and the plurality of second double-layer structures MDLS2 are parts of touch sense signal lines connected to touch sense electrodes. In one example, the plurality of second single-layer structures MSLS2 and the plurality of second double-layer structures MDLS2 are parts of a plurality of first touch signal lines SGL1. In one example, the plurality of second single-layer structures MSLS2 and the plurality of second double-layer structures MDLS2 are parts of a plurality of second touch signal lines SGL2. In one example, the plurality of second single-layer structures MSLS2 and the plurality of second double-layer structures MDLS2 are parts of a plurality of third touch signal lines SGL3.

[0090] In some embodiments, the plurality of second single-layer structures MSLS2 are substantially parallel to each other and extend along a third direction DR3 respectively; the plurality of second double-layer structures MDLS2 are substantially parallel to each other and extend along a fifth direction DR5 respectively.

[0091] In some embodiments, the third direction DR3 and the fifth direction DR5 are substantially parallel to each other, for example, within an error of less than 5 degrees, or preferably parallel to each other.

[0092] In some embodiments, the third direction DR3 and the fifth direction DR5 are two non-parallel directions. For example, the third direction DR3 and the fifth direction DR5 cross each other. Optionally, the third direction DR3 and the fifth direction DR5 cross each other at a non-90-degree inclination angle. In some embodiments, the third direction DR3 and the fifth direction DR5 cross each other at an angle of less than 10 degrees.

[0093] See Figure 9 , in some embodiments, in the third region R3, the plurality of second single-layer structures MSLS2 are alternately located in the first layer SL1 and the second layer SL2.

[0094] In some embodiments, a plurality of second connection points CP2 connecting the plurality of second single-layer structures MSLS2 and the plurality of second double-layer structures MDLS2 are arranged along a sixth direction DR6.

[0095] In some embodiments, the second direction DR2 and the sixth direction DR6 are substantially parallel to each other, for example, within an error of less than 5 degrees, or preferably parallel to each other.

[0096] In some embodiments, the second direction DR2 and the sixth direction DR6 are two non-parallel directions. For example, the second direction DR2 and the sixth direction DR6 intersect each other. Optionally, the second direction DR2 and the sixth direction DR6 intersect each other at a non-90-degree inclination angle. In some embodiments, the second direction DR2 and the sixth direction DR6 intersect each other at an angle less than 10 degrees.

[0097] Figure 10 is along Figure 8 a cross-sectional view taken along the F-F' line in Figure 8 and Figure 10 Referring to

[0098] Figure 11 FIG. Figure 12 is Figure 11 a further enlarged view of Figure 11 and Figure 12 Referring to

[0099] In some embodiments, a plurality of third double-layer structures MDLS3 of a plurality of touch signal lines among the plurality of touch signal lines are respectively aggregated in the fifth region R5; a plurality of fourth double-layer structures MDLS4 of a plurality of touch signal lines among the plurality of touch signal lines are respectively aggregated in the sixth region R6; a plurality of third single-layer structures MSLS3 of a plurality of touch signal lines among the plurality of touch signal lines are respectively aggregated in the seventh region R7. The plurality of fourth double-layer structures MDLS4 in the sixth region R6 are respectively connected to the plurality of third single-layer structures MSLS3 in the seventh region R7. The plurality of third single-layer structures MSLS3 in the seventh region R7 are respectively connected to the plurality of third double-layer structures MDLS3 in the fifth region R5. The sixth region R6 is directly adjacent to the seventh region R7. The seventh region R7 is directly adjacent to the fifth region R5.

[0099] In some embodiments, a plurality of third double-layer structures MDLS3, a plurality of fourth double-layer structures MDLS4, and a plurality of third single-layer structures MSLS3 are parts of touch signal lines of the same type. In one example, a plurality of third double-layer structures MDLS3, a plurality of fourth double-layer structures MDLS4, and a plurality of third single-layer structures MSLS3 are parts of touch scan signal lines connected to touch scan electrodes. In another example, a plurality of third double-layer structures MDLS3, a plurality of fourth double-layer structures MDLS4, and a plurality of third single-layer structures MSLS3 are parts of touch sense signal lines connected to touch sense electrodes. In one example, a plurality of third double-layer structures MDLS3, a plurality of fourth double-layer structures MDLS4, and a plurality of third single-layer structures MSLS3 are parts of a plurality of first touch signal lines SGL1. In one example, a plurality of third double-layer structures MDLS3, a plurality of fourth double-layer structures MDLS4, and a plurality of third single-layer structures MSLS3 are parts of a plurality of second touch signal lines SGL2. In one example, a plurality of third double-layer structures MDLS3, a plurality of fourth double-layer structures MDLS4, and a plurality of third single-layer structures MSLS3 are parts of a plurality of third touch signal lines SGL3.

[0100] Figure 13 Shows a corresponding one of the plurality of third single-layer structures, which connects a corresponding one of the plurality of third double-layer structures and a corresponding one of the plurality of fourth double-layer structures. Refer to Figure 13 , a corresponding one of the plurality of third single-layer structures MSLS3 is a semi-circular structure that connects a corresponding one of the plurality of third double-layer structures MDLS3 and a corresponding one of the plurality of fourth double-layer structures MDLS4. The semi-circular structure includes two parallel portions PP1 and PP2 that respectively extend along a second direction DR2, and a connecting portion CPP that connects the two parallel portions PP1 and PP2 together.

[0101] In some embodiments, the plurality of third double-layer structures MDLS3 are substantially parallel to each other and respectively extend along a first direction DR1; the plurality of fourth double-layer structures MDLS4 are substantially parallel to each other and respectively extend along the first direction DR1. The first direction DR1 and the second direction DR2 are different from each other and intersect each other at an angle greater than zero. Optionally, the first direction DR1 and the second direction DR2 are two non-parallel directions, for example, the first direction DR1 and the second direction DR2 intersect each other. Optionally, the first direction DR1 and the second direction DR2 are perpendicular to each other. Optionally, the first direction DR1 and the second direction DR2 intersect each other at a non-90-degree inclination angle.

[0102] Figure 14 Is a cross-sectional view along the Figure 12 G-G' line in Figure 12 and Figure 14, in some embodiments, in the seventh region R7, at least two of the plurality of third single-layer structures MSLS3 are respectively located in the first layer SL1 and the second layer SL2. In an example as shown in Figure 14 and Figure 12 , in the seventh region R7, the plurality of third single-layer structures MSLS3 are alternately located in the first layer SL1 and the second layer SL2.

[0103] Referring to Figure 11 and Figure 12 , in some embodiments, a plurality of fourth single-layer structures MSLS4 of a plurality of touch signal lines among the plurality of touch signal lines are respectively aggregated in the eighth region R8. The plurality of fourth single-layer structures MSLS4 are substantially parallel to each other and respectively extend along the second direction DR2. The plurality of fourth single-layer structures MSLS4 are respectively connected to the plurality of third double-layer structures MDLS3. As shown in Figure 4 , Figure 5 , Figure 11 and Figure 12 , the plurality of fourth single-layer structures MSLS4 are at least a subset of the plurality of first single-layer structures MSLS1.

[0104] Figure 15 is a cross-sectional view along the H-H' line in Figure 1A . Figure 16 is a cross-sectional view along the I-I' line in Figure 1A . As shown in Figure 1A , Figure 15 and Figure 16 , in some embodiments, the touch structure includes 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 and the plurality of second mesh electrodes TE2 are located in the second layer SL2. The touch structure further includes a plurality of touch electrode bridges EB located in the first layer SL1; and through holes Vb extending through the touch insulating layer TI. Optionally, the plurality of touch electrode bridges EB respectively extend through the through holes Vb to respectively connect adjacent second grid blocks in the corresponding columns of the plurality of columns of the second mesh electrodes TE2.

[0105] Figure 17 is a schematic diagram showing a touch structure in some embodiments according to the present disclosure. Referring to Figure 17, in some embodiments, the touch structure includes a plurality of first mesh electrodes TE1 and a 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 scanning electrodes, and the plurality of second mesh electrodes TE2 are a plurality of touch sensing electrodes. Optionally, the plurality of mesh touch electrodes TE1 are a plurality of touch sensing electrodes, and the plurality of second mesh electrodes TE2 are a plurality of touch scanning electrodes. The touch structure is restricted within the touch control region TCR and not within the window region WR surrounded by the touch control region TCR. For example, the touch structure may be a touch structure in a display panel, where the touch control region TCR substantially overlaps with the display region of the display panel, and the window region WR is the region in the display panel having a hole configured for mounting accessories (such as a camera lens or a fingerprint sensor). The display panel is configured to display an image in at least a portion of the touch control region TCR. In one example, within the window region WR, there are no display elements and touch structures of the display panel; within at least a portion of the display region or the touch control region TCR, there are both display elements and touch structures of the display panel.

[0106] Referring to Figure 17 , in some embodiments, the plurality of mesh touch electrodes TE1 are arranged in multiple rows, each of which is a corresponding one of the plurality of mesh touch electrodes TE1; the plurality of mesh scanning electrodes TE2 are arranged in multiple columns, each of which is a corresponding one of the plurality of second mesh electrodes TE2. In some embodiments, at least one row of the multiple rows of the first mesh electrodes TE1 passes through the window region WR. For example, as Figure 17 shown, the window crossing row Rwc of the plurality of first mesh electrodes TE1 passes through the window region WR. The touch electrodes in the window crossing row Rwc are separated into two parts by the window region WR (the part on the left side of the window region WR and the part on the right side of the window region WR). In some embodiments, at least one column of the multiple columns of the second mesh electrodes TE2 passes through the window region WR. For example, as Figure 17 shown, the window crossing column Cwc of the plurality of second mesh electrodes TE2 passes through the window region WR. The touch electrodes in the window crossing column Cwc are separated into two parts by the window region WR (the part on the upper side of the window region WR and the part on the lower side of the window region WR).

[0107] Figure 18A is a schematic diagram showing a window region in some embodiments according to the present disclosure. Figure 18B is an enlarged view of a touch structure surrounding a window region in some embodiments according to the present disclosure. Figure 18C is a further enlarged view of a touch structure surrounding a window region in some embodiments according to the present disclosure. Referring to Figure 18A, in some embodiments, the window region WR has at least four sides, including a first side S1, a second side S2, a third side S3, and a fourth side S4. Refer to Figures 18A to 18C , in some embodiments, the window crossing rows Rwc of the plurality of first mesh electrodes TE1 include a first mesh block MB1 located on the first side S1 of the window region WR and a second mesh block MB2 located on the second side S2 of the window region WR; a first conductive plate CP1 directly connected to a plurality of mesh lines of the first mesh block MB1; a second conductive plate CP2 directly connected to a plurality of mesh lines of the second mesh block MB2; and a first conductive bridge CB1 connecting the first conductive plate CP1 and the second conductive plate CP2.

[0108] In this touch structure, with the assistance of conductive plates (e.g., the first conductive plate CP1 and the second conductive plate CP2), adjacent mesh blocks (e.g., the first mesh block MB1 and the second mesh block MB2) separated by the window region WR are connected by a conductive connection bridge (e.g., the first conductive bridge CB1). Since forming a connection bridge generally involves forming vias to connect the corresponding mesh electrodes, it is extremely difficult to precisely connect the mesh electrode lines to the connection bridge without a conductive plate as an intermediate. The novel and unique structure of this touch structure ensures the connection of adjacent mesh blocks separated by the window region WR to send touch signals.

[0109] Refer to Figure 18A and Figure 18C , the first conductive plate CP1, the second conductive plate CP2, and the first conductive bridge CB1 respectively surround a first part P1, a second part P2, and a third part P3 of the periphery of the window region WR. Optionally, the third part P3 partially overlaps with the first part P1 and partially overlaps with the second part P2. Optionally, the first part P1 is located on the first side S1 of the window region WR; the second part P2 is located on the second side S2 of the window region WR; and the third part P3 is located on the fourth side S4 of the window region WR.

[0110] Refer to Figures 18A to 18C , in some embodiments, the window crossing columns Cwc of the plurality of second mesh electrodes TE2 include a third mesh block MB3 and a fourth mesh block MB4, which are respectively located on the third side S3 and the fourth side S4 of the window region WR; a third conductive plate CP3 directly connected to a plurality of mesh lines of the third mesh block MB3; a fourth conductive plate CP4 directly connected to a plurality of mesh lines of the fourth mesh block MB4; and a second conductive bridge CB2 connecting the third conductive plate CP3 and the fourth conductive plate CP4.

[0111] Refer to Figure 18A and Figure 18C, the third conductive plate CP3, the fourth conductive plate CP4, and the second conductive bridge CB2 respectively surround the fourth part P4, the fifth part P5, and the sixth part P6 of the periphery of the window region WR. In one example, the third conductive plate CP3, the fourth conductive plate CP4, and the second conductive bridge CB2 are part of an integral structure; the third conductive plate CP3 includes a first arcuate plate, the fourth conductive plate CP4 includes a second arcuate plate, and the second conductive bridge CB2 includes a third arcuate bridge. In another example, the third arc is non-concentric with the first arc and non-concentric with the second arc, so the boundary between the third conductive plate CP3 and the second conductive bridge CB2 and the boundary between the fourth conductive plate CP4 and the second conductive bridge CB2 can be discerned. In another example, the radius of the third arc is different from the radius of the first arc and different from the radius of the second arc, so the boundary between the third conductive plate CP3 and the second conductive bridge CB2 and the boundary between the fourth conductive plate CP4 and the second conductive bridge CB2 can be distinguished. Optionally, the sixth part P6 overlaps with the fourth part P4 in part and overlaps with the fifth part P5 in part. Optionally, the fourth part P4 is located on the third side S3 of the window region WR; the fifth part P5 is located on the fourth side S4 of the window region WR; and the sixth part P6 is located on the second side S2 of the window region WR.

[0112] Reference Figures 18A to 18C , in some embodiments, the window traversing rows Rwc of the plurality of first mesh electrodes TE1 further include a third conductive bridge CB3 connecting the first conductive plate CP1 and the second conductive plate CP2. Refer to Figure 18A and Figure 18C , the first conductive plate CP1, the second conductive plate CP2, and the third conductive bridge CB3 respectively surround the first part P1, the second part P2, and the seventh part P7 of the periphery of the window region WR. Optionally, the seventh part P7 overlaps with the first part P1 in part and overlaps with the second part P2 in part. Optionally, the first part P1 is located on the first side S1 of the window region WR; the second part P2 is located on the second side S2 of the window region WR; and the seventh part P7 is located on the third side S3 of the window region WR.

[0113] Reference Figures 18A to 18C , in some embodiments, the window traversing columns Cwc of the plurality of second mesh electrodes TE2 further include a fourth conductive bridge CB4 connecting the third conductive plate CP3 and the fourth conductive plate CP4. Refer to Figure 18A and Figure 18C, the third conductive plate CP3, the fourth conductive plate CP4, and the fourth conductive bridge CB4 respectively surround the fourth part P4, the fifth part P5, and the eighth part P8 of the periphery of the window area WR. Optionally, the eighth part P8 partially overlaps with the fourth part P4 and partially overlaps with the fifth part P5. Optionally, the fourth part P4 is located on the third side S3 of the window area WR; the fifth part P5 is located on the fourth side S4 of the window area WR; and the eighth part P8 is located on the first side S1 of the window area WR.

[0114] Referring to Figure 17 , in some embodiments, the window traversing row Rwc further includes a plurality of first non-window grid blocks NWB1, and the window traversing column Cwc further includes a plurality of second non-window grid blocks NWB2. Optionally, due to the presence of the window area WR, the area of at least the first grid block MB1 is smaller (by 5%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, or 95% or more) than the area of each of the plurality of first non-window grid blocks NWB1. Optionally, the area of the first grid block MB1 is smaller than the area of each of the plurality of first non-window grid blocks NWB1, and the area of the second grid block MB2 is also smaller than the area of each of the plurality of first non-window grid blocks NWB1. Optionally, due to the presence of the window area WR, the area of at least the third grid block MB3 is smaller than the area of each of the plurality of second non-window grid blocks NWB2. Optionally, the area of the third grid block MB3 is smaller than the area of each of the plurality of second non-window grid blocks NWB2, and the area of the fourth grid block MB4 is also smaller than the area of each of the plurality of second non-window grid blocks NWB2.

[0115] In another aspect, the present disclosure provides a display device. In some embodiments, the display device includes a display panel; a touch structure described herein or manufactured by the methods described herein; and an integrated circuit. Examples of suitable display devices include, but are not limited to, electronic paper, mobile phones, tablet computers, televisions, monitors, laptop computers, digital photo albums, GPS, etc. Optionally, the display device is an organic light-emitting diode display device. Optionally, the display device is a liquid crystal display device.

[0116] Figure 19 is a cross-sectional view of a display panel according to some embodiments of the present disclosure. Referring to Figure 19, in the display area, the display panel includes a base substrate BS, a plurality of thin film transistors TFT on the base substrate BS, a passivation layer PVX on a side of the plurality of thin film transistors TFT away from the base substrate BS, a first planarization layer PLX1 on a side of the passivation layer PVX away from the base substrate BS, a relay electrode RE on a side of the first planarization layer PLN1 away from the passivation layer PVX, a second planarization layer PLN2 on a side of the relay electrode RE away from the first planarization layer PLN1, a pixel defining layer PDL on a side of the second planarization layer PLN2 away from the first planarization layer PLN1 and defining a sub-pixel aperture, an anode AD on a side of the second planarization layer PLN2 away from the first planarization layer PLN1, a light emitting layer EL on a side of the anode AD away from the second planarization layer PLN2, a cathode CD on a side of the light emitting layer EL away from the anode AD, a first inorganic encapsulation layer CVD1 on a side of the cathode CD away from the light emitting layer EL, an organic encapsulation layer IJP on a side of the first inorganic encapsulation layer CVD1 away from the cathode CD, a second inorganic encapsulation layer CVD2 on a side of the organic encapsulation layer IJP away from the first inorganic encapsulation layer CVD1, a buffer layer BUF on a side of the second inorganic encapsulation layer CVD2 away from the organic encapsulation layer IJP, a touch insulation layer TI on a side of the buffer layer BUF away from the second inorganic encapsulation layer CVD2, a touch electrode (e.g., a plurality of first touch electrodes TE1 and a plurality of second touch electrodes TE2 as shown in Figure 19 ), and an outer coating OC on a side of the touch electrode away from the touch insulation layer TI.

[0117] Figure 20 is a schematic diagram showing a display area and a peripheral area in a display device according to some embodiments of the present disclosure. Referring to Figure 20 , in some embodiments, the display device includes a display area DA and a peripheral area PA. Optionally, the display area DA is substantially the same as the touch control area TCA in Figure 1B , and the peripheral area PA is substantially the same as the peripheral area PA in Figure 1B . In some embodiments, the peripheral area PA includes a first sub-area PA1 on a first side S1 of the display area DA, a second sub-area PA2 on a second side S2 of the display area DA, a third sub-area PA3 on a third side S3 of the display area DA, and a fourth sub-area PA4 on a fourth side S4 of the display area DA. Optionally, the first side S1 and the fourth side S4 are opposite to each other. Optionally, the second side S2 and the third side S3 are opposite to each other. Optionally, the first sub-area PA1 is a sub-area where a plurality of first touch signal lines SGL1, a plurality of second touch signal lines SGL2, and a plurality of third touch signal lines SGL3 are connected to an integrated circuit (e.g., an integrated touch control circuit).

[0118] In some embodiments, the first sub-region PA1 includes a side region SR and one or more corner regions (e.g., a first corner region CR1 and a second corner region CR2). The one or more corner regions are respectively located at the corners of the touch structure. The one or more corner regions respectively connect the side region SR to one or more adjacent sub-regions of the peripheral region PA. For example, the first corner region CR1 connects the side region SR to the second sub-region PA2, and the second corner region CR2 connects the side region SR to the third sub-region PA3.

[0119] In some embodiments, the first sub-region PA1 has a first shortest width w1 in the direction from the display region DA to the first sub-region PA1. Optionally, the second sub-region PA2 has a second shortest width w2 in the direction from the display region DA to the second sub-region PA2. Optionally, the third sub-region PA3 has a third shortest width w3 in the direction from the display region DA to the third sub-region PA3. Optionally, the fourth sub-region PA4 has a fourth shortest width w4 in the direction from the display region DA to the fourth sub-region PA4. In some embodiments, the first shortest width w1 is greater than at least one of the other shortest widths, e.g., greater than at least one of the second shortest width w2, the third shortest width w3, or the fourth shortest width w4. Optionally, the first shortest width w1 is greater than any one of the other shortest widths, e.g., greater than the second shortest width w2, greater than the third shortest width w3, and greater than the fourth shortest width w4.

[0120] For example, the first sub-region PA1 of the peripheral region having the above-mentioned double-layer region and single-layer region has a first shortest width w1 in the direction from the touch control region to the first sub-region PA1. The first shortest width w1 can be reduced from 1.36 mm to 1.076 mm. The reference value 1.36 mm can be the reference first shortest width of the corresponding first sub-region of the peripheral region in a reference display device without the double-layer region and single-layer region of the present disclosure. In one example, the touch signal lines of the reference display device adopt a double-layer structure throughout the peripheral region. By forming the touch signal lines into a complex structure discussed in the present disclosure, the first shortest width in the first sub-region can be significantly reduced compared to the touch signal lines in the reference display device.

[0121] As used herein, the term "display area" refers to the area of a display substrate (e.g., a counter substrate or an array substrate) in a display panel where an image is actually displayed. Optionally, the display area may include a sub-pixel area and an inter-sub-pixel area. The sub-pixel area refers to the light-emitting area of a sub-pixel, e.g., the area corresponding to a pixel electrode in a liquid crystal display, or the area corresponding to a light-emitting layer in an organic light-emitting diode display panel. The inter-sub-pixel area refers to the area between adjacent sub-pixel areas, e.g., the area corresponding to a black matrix in a liquid crystal display, or the area corresponding to a pixel defining layer in an organic light-emitting diode display panel. Optionally, the inter-sub-pixel area is the area between adjacent sub-pixel areas within the same pixel. Optionally, the inter-sub-pixel area is the area between two adjacent sub-pixel areas in two adjacent pixels.

[0122] In another aspect, the present invention provides a method of manufacturing a touch structure. In some embodiments, the method includes forming a plurality of touch electrodes in a touch area and forming a plurality of touch signal lines in a peripheral area. Optionally, forming each of the plurality of touch signal lines includes: forming a double-layer structure in a double-layer area and forming a single-layer structure in a single-layer area. Optionally, the double-layer area and the single-layer area in the plurality of touch signal lines in the peripheral area are connected to a first sub-region of an integrated circuit, and the first sub-region has a first shortest width along a direction from the touch area to the first sub-region, and the first shortest width is greater than the shortest width of at least one sub-region among the sub-regions in the peripheral area other than the first sub-region. Optionally, a plurality of adjacent double-layer structures in the double-layer area are formed to be respectively connected to a plurality of adjacent single-layer structures in the single-layer area. Optionally, at least two of the plurality of adjacent single-layer structures are formed to be respectively located in a first layer and a second layer. Optionally, the method further includes forming a touch insulating layer between the first layer and the second layer.

[0123] The foregoing description of the embodiments of the present invention has been presented for purposes of illustration and description. It is not exhaustive and is not intended to limit the present invention to the precise forms or exemplary embodiments disclosed. Thus, 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 present invention and its best mode of practical application, so that those skilled in the art can understand the various embodiments of the present invention and the various modifications suitable for the particular use or implementation contemplated. The scope of the present invention is intended to be defined by the appended claims and their equivalents, in which all terms are meant in their broadest reasonable sense unless otherwise stated. Thus, terms such as "the invention", "the present invention", etc. do not necessarily limit the scope of the claims to a particular embodiment, and the reference to exemplary embodiments of the present invention does not imply a limitation of the present invention and should not be inferred as such. The present invention is defined only by the spirit and scope of the appended claims. Additionally, these claims may refer to the use of "first", "second", etc. followed by a noun or element. These terms should be understood as nomenclature and should not be construed as limiting the number of elements modified by these nomenclatures unless a specific number has been given. Any advantages and benefits described may not apply to all embodiments of the present invention. It should be understood that those skilled in the art can make changes to the described embodiments without departing from the scope of the present invention defined by the appended claims. Further, no element or component in this disclosure is intended to be dedicated to the public, whether or not the element or component is expressly recited in the appended claims.

Claims

1. A touch structure, which includes a plurality of touch electrodes in a touch area and a plurality of touch signal lines in a peripheral area; Wherein, Each of the plurality of touch signal lines includes a double-layer structure in a double-layer area and a single-layer structure in a single-layer area. Among them, the double-layer area and the single-layer area are connected to a first sub-area of an integrated circuit in the plurality of touch signal lines in the peripheral area. The first sub-area has a first shortest width along the direction from the touch area to the first sub-area, and the first shortest width is greater than the shortest width of at least one sub-area in the sub-areas of the peripheral area other than the first sub-area; A plurality of adjacent double-layer structures in the double-layer area are respectively connected to a plurality of adjacent single-layer structures in the single-layer area; The plurality of adjacent single-layer structures are alternately located in the first layer and the second layer, and the single-layer structures located in the first layer and the second layer are insulated from each other; and The touch structure further includes a touch insulating layer located between the first layer and the second layer.

2. The touch structure according to claim 1, Wherein, The first shortest width is greater than the shortest width of any one of the sub-areas in the sub-areas of the peripheral area other than the first sub-area.

3. The touch structure according to claim 1, Wherein, Each double-layer structure includes a first part in the first layer and a second part in the second layer; The first adjacent corresponding single-layer structure in the second layer is connected to the corresponding second part of the first adjacent double-layer structure; And The second adjacent corresponding single-layer structure in the first layer is connected to the corresponding first part of the second adjacent double-layer structure.

4. The touch structure according to claim 3, Wherein, The first part and the second part are connected by a connection through hole extending through the touch insulating layer.

5. The touch structure according to any one of claims 1 to 4, Wherein, A plurality of first double-layer structures of a plurality of touch signal lines among the plurality of touch signal lines are respectively aggregated in a first area; A plurality of first single-layer structures of the plurality of touch signal lines among the plurality of touch signal lines are respectively aggregated in a second area; The plurality of first double-layer structures are substantially parallel to each other and respectively extend along a first direction; The plurality of first single-layer structures are substantially parallel to each other and respectively extend along a second direction; The plurality of first single-layer structures are alternately located in the first layer and the second layer, and the first single-layer structures located in the first layer and the second layer are insulated from each other; And The first direction and the second direction are different from each other and intersect at an angle greater than zero.

6. The touch structure according to claim 5, Wherein, A plurality of connection points respectively connecting the plurality of first double-layer structures and the plurality of first single-layer structures are arranged along a seventh direction; and The second direction and the seventh direction intersect at an angle within a range of 6 degrees to 15 degrees.

7. The touch structure according to any one of claims 1 to 4, Wherein, A plurality of first single-layer structures of a plurality of touch signal lines among the plurality of touch signal lines are respectively aggregated in a second region; A plurality of second single-layer structures of the plurality of touch signal lines among the plurality of touch signal lines are respectively aggregated in a third region; The plurality of second single-layer structures are respectively connected to the plurality of first single-layer structures; The plurality of first single-layer structures are substantially parallel to each other and respectively extend along a second direction; The plurality of second single-layer structures are substantially parallel to each other and respectively extend along a third direction; The plurality of second single-layer structures are alternately located in the first layer and the second layer, and the second single-layer structures located in the first layer and the second layer are insulated from each other; And The second direction and the third direction are different from each other and intersect each other at an angle greater than zero.

8. The touch control structure according to claim 7, wherein, The second direction and the third direction intersect each other at an angle within a range of 15 degrees to 25 degrees.

9. The touch control structure according to claim 7, wherein, A plurality of connection points respectively connecting the plurality of first single-layer structures and the plurality of second single-layer structures are arranged along a fourth direction; and The second direction and the fourth direction intersect each other at an angle within a range of 20 degrees to 40 degrees.

10. The touch control structure according to any one of claims 1 to 4, wherein, A plurality of second single-layer structures of a plurality of touch signal lines among the plurality of touch signal lines are respectively aggregated in a third region; A plurality of second double-layer structures of the plurality of touch signal lines among the plurality of touch signal lines are respectively aggregated in a fourth region; The plurality of second single-layer structures are substantially parallel to each other and respectively extend along a third direction; The plurality of second double-layer structures are substantially parallel to each other and respectively extend along a fifth direction; The plurality of second single-layer structures are alternately located in the first layer and the second layer, and the second single-layer structures located in the first layer and the second layer are insulated from each other; The plurality of second single-layer structures are respectively connected to the plurality of second double-layer structures; And A plurality of second connection points respectively connecting the plurality of second single-layer structures and the plurality of second double-layer structures are arranged along a sixth direction.

11. The touch control structure according to claim 10, wherein, The sixth direction is substantially parallel to the second direction.

12. The touch control structure according to claim 10, wherein, The touch control structure includes through holes extending through the touch insulating layer at respective second connection points, and materials in the second layer are connected to materials in the first layer through the through holes.

13. The touch control structure according to any one of claims 5, wherein, A plurality of third double-layer structures of a plurality of touch signal lines among the plurality of touch signal lines are respectively aggregated in a fifth region; A plurality of fourth double-layer structures of the plurality of touch signal lines among the plurality of touch signal lines are respectively aggregated in a sixth region; A plurality of third single-layer structures of the plurality of touch signal lines among the plurality of touch signal lines are respectively aggregated in a seventh region; A corresponding one of the plurality of third single-layer structures is a semi-circular structure connecting a corresponding one of the plurality of third double-layer structures and a corresponding one of the plurality of fourth double-layer structures; The semi-circular structure includes two parallel portions respectively extending along a second direction and a connecting portion connecting the two parallel portions together; The plurality of third single-layer structures are alternately located in the first layer and the second layer, and the third single-layer structures located in the first layer and the second layer are insulated from each other; The plurality of third double-layer structures are substantially parallel to each other and respectively extend along a first direction; The plurality of fourth double-layer structures are substantially parallel to each other and respectively extend along the first direction; The first direction and the second direction are different from each other and intersect at an angle greater than zero.

14. The touch structure according to claim 13, wherein, The plurality of fourth single-layer structures of the plurality of touch signal lines are respectively aggregated in an eighth region; The plurality of fourth single-layer structures are respectively connected to the plurality of third double-layer structures; The plurality of fourth single-layer structures are substantially parallel to each other and respectively extend along the second direction; and The plurality of fourth single-layer structures are at least a subset of the plurality of first single-layer structures.

15. The touch structure according to any one of claims 1 to 4, wherein, The plurality of touch electrodes include a plurality of first mesh electrodes arranged in a plurality of rows and a plurality of second mesh electrodes arranged in a plurality of columns; and The plurality of first mesh electrodes and the plurality of second mesh electrodes are in the second layer.

16. The touch structure according to claim 15, further comprising: A plurality of touch electrode bridges in the first layer; and Through holes extending through the touch insulating layer; wherein, the plurality of touch electrode bridges respectively extend through the through holes to respectively connect adjacent second grid blocks in corresponding columns of the plurality of columns of the plurality of second mesh electrodes.

17. The touch structure according to claim 15, wherein, The plurality of touch signal lines include: A plurality of first touch signal lines respectively connected to the plurality of first mesh electrodes; A plurality of second touch signal lines respectively connected to first terminals of the plurality of second mesh electrodes; and A plurality of third touch signal lines respectively connected to second terminals of the plurality of second mesh electrodes.

18. The touch structure according to any one of claims 1 to 4, wherein, The touch structure is restricted in a touch area and does not exist in a window area at least partially surrounded by the touch area; wherein, the window crossing rows of the plurality of first mesh electrodes include: A first grid block and a second grid block respectively located on a first side and a second side of the window area; A first conductive plate directly connected to a plurality of grid lines of the first grid block; A second conductive plate directly connected to a plurality of grid lines of the second grid block; and A first conductive bridge connecting the first conductive plate and the second conductive plate; Wherein, the first conductive plate, the second conductive plate, and the first conductive bridge respectively surround a first part, a second part, and a third part of the periphery of the window region; the first conductive plate and the second conductive plate are located in the second layer; and the first conductive bridge is located in the first layer.

19. The touch structure according to any one of claims 1 to 4, wherein, each of the plurality of touch signal lines has a line width in the range of 2.5 μm to 4.5 μm; adjacent single-layer structures are spaced apart by a shortest distance in the positive projection on the substrate, and the shortest distance is in the range of 1.1 μm to 3.1 μm; adjacent single-layer structures in the first layer are spaced apart by a shortest distance in the positive projection on the substrate, and the shortest distance is in the range of 4.7 μm to 10.7 μm; and adjacent single-layer structures in the second layer are spaced apart by a shortest distance in the positive projection on the substrate, and the shortest distance is in the range of 4.7 μm to 10.7 μm.

20. The touch structure according to any one of claims 1 to 4, wherein, at least two adjacent single-layer structures respectively located in the first layer and the second layer are electrically connected to touch electrodes in adjacent rows.

21. The touch structure according to any one of claims 1 to 4, wherein, the first shortest width is less than the reference first shortest width of the corresponding first sub-region in a reference touch structure, and the touch signal lines in the reference touch structure have a double-layer structure in the entire peripheral region.

22. A display device, which comprises: a display panel; the touch structure according to any one of claims 1 to 21; and an integrated circuit.

23. The display device according to claim 22, wherein, the display panel comprises: a plurality of light-emitting elements; a packaging layer on the plurality of light-emitting elements, wherein the packaging layer comprises a first inorganic packaging layer, an organic packaging layer on a side of the first inorganic packaging layer away from the plurality of light-emitting elements, and a second inorganic packaging layer on a side of the organic packaging layer away from the first inorganic packaging layer; and a buffer layer on a side of the second inorganic packaging layer away from the organic packaging layer; wherein, the touch insulating layer is on a side of the buffer layer away from the second inorganic packaging layer.

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