CN114594868A

CN114594868A - Touch structure and display device

Info

Publication number: CN114594868A
Application number: CN202011408279.9A
Authority: CN
Inventors: 王裕; 赵二瑾; 张毅; 文平; 王威; 曾扬; 张元其; 王领然; 颜俊
Original assignee: BOE Technology Group Co Ltd; Chengdu BOE Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Chengdu BOE Optoelectronics Technology Co Ltd
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2022-06-07
Also published as: CN116027928A

Abstract

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

Description

Touch structure and display device

Technical Field

The invention relates to the technical field of display, in particular to a touch structure and display equipment.

Background

Various types of touch panels have been developed. Examples of the touch panel include an one-glass-solution (OGS) touch panel, an on-cell touch panel, and an in-cell touch panel. The on-cell touch panel provides high touch accuracy. The on-cell touch panel may be classified into a single-layer-on-cell (SLOC) touch panel and a multi-layer-on-cell (MLOC) touch panel. In particular, multi-touch can be realized in an MLOC touch panel having superior touch accuracy and blanking effect.

Disclosure of Invention

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

Optionally, the first shortest width is greater than the shortest width of any one of the sub-regions of the peripheral region other than the first sub-region.

Optionally, each bilayer structure comprises a first portion in the first layer and a second portion in the second layer; a first adjacent respective single-layer structure in the first layer is connected to a respective first portion of a first adjacent double-layer structure; and a second adjacent respective single-layer structure in the second layer is connected to a respective second portion of a second adjacent double-layer structure.

Optionally, the first portion and the second portion are connected by a connecting via extending through the touch insulating layer.

Optionally, a plurality of first double-layer structures of a plurality of touch signal lines of the plurality of touch signal lines are respectively gathered in the 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 gathered in a second region; 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; at least two of the plurality of first monolayer 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 cross each other at an angle greater than zero.

Optionally, 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 cross each other at an angle in a range of 6 degrees to 15 degrees.

Optionally, a plurality of first single-layer structures of a plurality of touch signal lines of the plurality of touch signal lines are respectively gathered in the 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 gathered in a third area; 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 monolayer structures are in the first layer and the second layer, respectively; and the second direction and the third direction are different from each other and cross each other at an angle larger than zero.

Optionally, the second direction and said third direction intersect each other at an angle in the range of 15 degrees to 25 degrees.

Optionally, a plurality of connection points connecting the plurality of first monolayer structures and the plurality of second monolayer structures, respectively, are arranged along a fourth direction; and the second direction and the fourth direction intersect each other at an angle in the range of 20 degrees to 40 degrees.

Optionally, a plurality of second single-layer structures of a plurality of touch signal lines of the plurality of touch signal lines are respectively gathered in the third area; a plurality of second double-layer structures of the plurality of touch signal lines among the plurality of touch signal lines are gathered in a fourth region, respectively; 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 monolayer structures are in the first layer and the second layer, respectively; 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.

Optionally, the sixth direction is substantially parallel to the second direction.

Optionally, the touch structure comprises a via extending through the touch insulating layer at each second connection point, the material in the second layer being connected to the material in the first layer through the via.

Optionally, a plurality of third double-layer structures of a plurality of touch signal lines of the plurality of touch signal lines are respectively gathered in the fifth area; a plurality of fourth double-layer structures of the plurality of touch signal lines among the plurality of touch signal lines are respectively gathered in a sixth area; a plurality of third single-layer structures of the plurality of touch signal lines among the plurality of touch signal lines are respectively gathered in a seventh area; a respective one of the plurality of third single-layered structures is a half-ring structure connecting the respective one of the plurality of third double-layered structures and the respective one of the plurality of fourth double-layered structures; the semi-ring structure comprises two parallel parts extending along a second direction respectively and a connecting part connecting the two parallel parts together; at least two of the plurality of third monolayer structures are in the first layer and the second layer, respectively; 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 cross each other at an angle greater than zero.

Optionally, a plurality of fourth single-layer structures of the plurality of touch signal lines in the plurality of touch signal lines are respectively gathered 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 monolayer structures is at least a subset of the plurality of first monolayer structures.

Optionally, the plurality of touch electrodes comprises 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.

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

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

Optionally, the touch structure is confined in a touch area and is not present in a window area at least partially surrounded by the touch area; wherein the window-crossing rows of the first plurality of mesh electrodes comprise: first and second gridblocks located on first and second sides of the window region, respectively; a first conductive plate directly connected to the plurality of grid lines of the first grid block; a second conductive plate directly connected to the 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 surround a first portion, a second portion, and a third portion, respectively, of a perimeter of the window area; the first and second conductive plates are located in the second layer; and the first conductive bridge is located in the first layer.

Optionally, each of the plurality of touch signal lines has a line width of 2.5 μm to 4.5 μm; orthographic projections of the adjacent single-layer structures on the base substrate are separated by a shortest distance, and the shortest distance is in a range of 1.1 mu m to 3.1 mu m; orthographic projections of adjacent single-layer structures in the first layer on the base substrate are separated by a shortest distance, and the shortest distance is in a range of 4.7-10.7 μm; and orthographic projections of adjacent single-layer structures in the second layer on the base substrate are separated by a shortest distance, and the shortest distance is in a range of 4.7-10.7 μm.

Optionally, at least two adjacent single layer structures in the first and second layers, respectively, are electrically connected to adjacent rows of touch electrodes.

Optionally, the first shortest width is smaller than a reference first shortest width of a corresponding first sub-area in the reference touch structure, and the touch signal line in the reference touch structure has a double-layer structure in the entire peripheral area.

In another aspect, the present disclosure provides a display apparatus, comprising: a display panel; a touch structure described herein or manufactured by the methods described herein; and an integrated circuit.

Optionally, the display panel includes: a plurality of light emitting elements; an encapsulation layer on the plurality of light emitting elements, wherein the encapsulation layer comprises a first inorganic encapsulation layer, an organic encapsulation layer on a side of the first inorganic encapsulation layer away from the plurality of light emitting elements, a second inorganic encapsulation layer on a side of the organic encapsulation layer away from the first inorganic encapsulation layer; and a buffer layer located on a side of the second inorganic encapsulation layer away from the organic encapsulation layer; wherein the touch insulating layer is positioned on one side of the buffer layer far away from the second inorganic packaging layer.

Drawings

In accordance with various disclosed embodiments, the following drawings are merely examples for illustrative purposes and are not intended to limit the scope of the invention.

Fig. 1A is a schematic diagram illustrating a structure of a touch structure in some embodiments according to the present disclosure.

Fig. 1B is a schematic diagram illustrating a touch area and a peripheral area in a touch structure according to some embodiments of the present disclosure.

Fig. 2 is an enlarged partial 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.

Fig. 3A is a further enlarged view of the enlarged region in fig. 2.

Fig. 3B is a sectional view taken along line a-a' in fig. 3A.

Fig. 3C is a sectional view taken along line B-B' in fig. 3A.

Fig. 3D is a sectional view taken along line C-C' in fig. 3A.

Fig. 3E is a cross-sectional view of a plurality of adjacent single-layer structure ASLS in a single-layer region, in accordance with some embodiments of the present disclosure.

Fig. 3F is a cross-sectional view of a plurality of adjacent single-layer structure ASLS in a single-layer region in some embodiments according to the present disclosure.

Fig. 4 is a partial enlarged view of a touch structure in a region transition from a touch region to a peripheral region in accordance with some embodiments of the present disclosure.

Fig. 5 is a further enlarged view of the first enlarged region of fig. 4.

Fig. 6 is a sectional view taken along line D-D' in fig. 5.

Fig. 7 is a further enlarged view of the second enlarged region of fig. 4.

Fig. 8 is a further enlarged view of the third enlarged area in fig. 7.

Fig. 9 is a sectional view taken along line E-E' in fig. 8.

Fig. 10 is a sectional view taken along line F-F' in fig. 8.

Fig. 11 is a partial enlarged view of a touch structure in a region transition from a touch region to a peripheral region in accordance with some embodiments of the present disclosure.

Fig. 12 is a further enlarged view of fig. 11.

Fig. 13 shows a corresponding one of the plurality of third single-layer structures connecting a corresponding one of the plurality of third double-layer structures and a corresponding one of the plurality of fourth double-layer structures.

Fig. 14 is a sectional view taken along line G-G' in fig. 12.

Fig. 15 is a sectional view taken along line H-H' in fig. 1A.

Fig. 16 is a sectional view taken along line I-I' in fig. 1A.

Fig. 17 is a schematic diagram illustrating a touch structure in some embodiments according to the present disclosure.

Fig. 18A is a schematic diagram illustrating window regions in some embodiments according to the present disclosure.

Fig. 18B is an enlarged view of the touch structure surrounding the window area in some embodiments according to the present disclosure.

Fig. 18C is a further enlarged view of the touch structure surrounding the window area in some embodiments according to the present disclosure.

Fig. 19 is a cross-sectional view of a display panel in some embodiments according to the present disclosure.

Fig. 20 is a schematic diagram illustrating a display area and a peripheral area in a display device in some embodiments according to the present disclosure.

Detailed Description

The present disclosure will now be described more specifically with reference to the following examples. It should be noted that the following description of some embodiments presented herein is for the purpose of illustration and description only. It is not intended to be exhaustive or to be limited to the precise form disclosed.

The present disclosure provides, among other things, a touch structure and a display device that substantially obviate one or more problems due to limitations and disadvantages of the related art. In one aspect, the present disclosure provides a touch structure. In some embodiments, the touch structure includes a plurality of touch electrodes in the touch area and a plurality of touch signal lines in the peripheral area. Each of the plurality of touch signal lines includes a double-layer structure in a double-layer region and a single-layer structure in a single-layer region. Optionally, the double-layer region and the single-layer region are connected in a first sub-region of the peripheral region in which the plurality of touch signal lines are connected to an integrated circuit, the first sub-region having a first shortest width in a direction from the touch region to the first sub-region, the first shortest width being larger than a shortest width of at least one sub-region of sub-regions of the peripheral region other than the first sub-region. Optionally, a plurality of adjacent double-layer structures in a double-layer region are respectively connected to a plurality of adjacent single-layer structures in the single-layer region. Optionally, at least two of the plurality of adjacent single-layer structures are located in the first layer and the second layer, respectively. Optionally, the touch structure further includes a touch insulating layer between the first layer and the second layer.

Fig. 1A is a schematic diagram illustrating a structure of a touch structure in some embodiments according to the present disclosure. Referring to fig. 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 of the plurality of rows are isolated from each other. Adjacent columns of the plurality of columns are isolated from each other. Optionally, the touch structure is a mutual capacitance type touch structure. Alternatively, 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. Alternatively, the plurality of first mesh electrodes TE1 are a plurality of touch scan electrodes, and the plurality of second mesh electrodes TE2 are a plurality of touch sense electrodes.

In some embodiments, the plurality of touch signal lines includes a plurality of first touch signal lines SGL1 respectively connected to the plurality of first mesh electrodes TE 1; a plurality of second touch signal lines SGL2 respectively connected to the first terminals T1 of the plurality of second mesh electrodes TE 2; and a plurality of third touch signal lines SGL3 connected to the second terminals T2 of the plurality of second mesh electrodes TE2, respectively. Alternatively, 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 SGL 1. Alternatively, 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 SGL 3.

In some embodiments, each of the plurality of first mesh electrodes TE1 extends along the second direction DR 2; and each of the plurality of second mesh electrodes TE2 extends along the first direction DR 1. Optionally, the first direction DR1 and the second direction DR2 are two non-parallel directions, e.g., 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 an inclination angle other than 90 degrees.

In some embodiments, a plurality of touch electrodes (e.g., a plurality of first mesh electrodes TE1 and a plurality of second mesh electrodes TE2) are located in the touch area TCA, and a plurality of touch signal lines (e.g., 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 located in the peripheral area PA outside the touch area TCA.

Fig. 1B is a schematic diagram illustrating a touch area and a peripheral area in a touch structure according to some embodiments of the present disclosure. Referring to fig. 1B, in some embodiments, the peripheral area PA includes a first sub-area PA1 on a first side S1 of the touch area TCA, a second sub-area PA2 on a second side S2 of the touch area TCA, a third sub-area PA3 on a third side S3 of the touch area TCA, and a fourth sub-area PA4 on a fourth side S4 of the touch area 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-area PA1 is a sub-area where 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 connected to an integrated circuit (e.g., an integrated touch circuit).

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 CR 2). The one or more corner regions are respectively located at corners of the touch structure. The one or more corner regions connect the side region SR to one or more adjacent sub-regions of the peripheral region PA, respectively. 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 PA 3.

In some embodiments, the first sub area PA1 has a first shortest width w1 in a direction from the touch area TCA to the first sub area PA 1. Optionally, the second sub area PA2 has a second shortest width w2 along a direction from the touch area TCA to the second sub area PA 2. Optionally, the third sub area PA3 has a third shortest width w3 in a direction from the touch area TCA to the third sub area PA 3. Optionally, the fourth sub area PA4 has a fourth shortest width w4 in a direction from the touch area TCA to the fourth sub area PA 4. 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 w 4. Optionally, the first shortest width w1 is greater than any 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 w 4.

Fig. 2 is a partial enlarged view of a touch structure in a region transition from a touch region to a peripheral region in accordance with some embodiments of the present disclosure. Referring to fig. 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 area DLR and the single layer area SLR are in the peripheral area of the touch structure. In some embodiments, the double layer region DLR and the single layer region SLR are in the first sub-region PA 1.

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

In one example shown in fig. 3A to 3C, the touch structure includes a buffer layer BUF on a second inorganic encapsulation sub-layer CVD2, the second inorganic encapsulation sub-layer CVD2 being a sub-layer of an encapsulation layer for encapsulating a light emitting element in a display device having the touch structure. In some embodiments, the touch structure further includes a first layer SL1 located at a side of the buffer layer BUF remote from the second inorganic encapsulation sub-layer CVD2, a touch insulating layer TI located at a side of the first layer SL1 remote from the buffer layer BUF, a second layer SL2 located at a side of the touch insulating layer TI remote from the first layer SL1, and a protective layer OC located at a side of the second layer SL2 remote from the touch insulating layer TI.

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 shown in fig. 3A-3C. As shown in fig. 3B, a first adjacent respective single-layer structure ASLS1 in the second layer SL2 is connected to a respective second portion P2 of the first adjacent double-layer structure ADLS 1. A second adjacent respective single layer structure ASLS2 in the first layer SL1 is connected to a respective first portion P1 of a second adjacent double layer structure ADLS 2. Optionally, a first adjacent respective single-layer structure ASLS1 in the second layer SL2 is continuously connected to a respective second portion P2 of the first adjacent double-layer structure ADLS1, forming a unitary structure. Optionally, a second adjacent respective single-layer structure ASLS2 in the first layer SL1 is continuously connected to a respective first portion P1 of the second adjacent double-layer structure ADLS2, forming a unitary structure.

Referring to fig. 2 and 3D, in some embodiments, at least two of the plurality of adjacent single-layer-structure ASLS are located in the first layer SL1 and the second layer SL2, respectively. In one example shown in fig. 2 and 3D, a plurality of adjacent single-layer structures ASLS are alternately in the first layer SL1 and the second layer SL 2. The inventors of the present disclosure 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 the present touch structure can be made to have a much narrower peripheral area. In one example, the width from the display area to the edge peripheral area of the display panel may be reduced from 1.36mm to 1.076 mm. In another example, the distance between the display area and the signal line farther from the display area may be reduced from 0.435mm to 0.331 mm. In addition, the signal lines in the same layer (e.g., the single-layer structure in the first layer SL 1) may be further spaced apart from each other to avoid short circuits. By further spacing 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 prone to defects.

For example, the first sub area having the peripheral area of the above-described double layer area and single layer area has a first shortest width in a direction from the touch control area to the first sub area. The first shortest width may be reduced from 1.36mm to 1.076 mm. The reference value of 1.36 millimeters may be a reference first shortest width of a corresponding peripheral area first sub-area in a reference touch control structure without the double layer area and the single layer area of the present disclosure. In one example, the touch signal lines of the reference touch control structure adopt a double-layer structure in the entire peripheral area. By forming the touch signal lines to have the complex structure discussed in this disclosure, the first shortest width in the first sub-area can be reduced compared to the touch signal lines in the reference touch control structure.

For example, a minimum pitch of 7.5 μm is typically required to avoid defects such as shorts and etch defects. By alternately disposing a plurality of adjacent single-layer-structure ASLSs in the first layer SL1 and the second layer SL2, the minimum pitch can be significantly reduced to 5.6 μm or less. Further, the signal lines in the same layer may be spaced apart by 7.5 μm to 11.2 μm or more, for example.

In some embodiments, each of the plurality of touch signal lines has a line width in a 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. Alternatively, each of the plurality of touch signal lines has a line width of 3.5 μm. In some embodiments, the plurality of adjacent single-layer structures ASLS have a line width (shown as lw in FIG. 3D) in a range of 2.5 μm to 4.5 μm, e.g., 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, the plurality of adjacent single-layer structures ASLS has a line width of 3.5 μm. In some embodiments, the plurality of adjacent bilayer structures ADLS have a line width in a range of 2.5 μm to 4.5 μm, e.g., 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, the plurality of adjacent double-layer structures ADLS has a line width of 3.5 μm.

Referring to fig. 3D, in some embodiments, orthographic projections of adjacent monolayer structures on the base substrate are spaced apart by a shortest distance D in a range of 1.1 μm to 3.1 μm, e.g., 1.1 μm to 1.6 μm, 1.6 μm to 2.1 μm, or 2.6 μm to 3.1 μm. Optionally, orthographic projections of adjacent monolayer structures on the base substrate are spaced apart by a shortest distance of 2.1 μm. In some embodiments, orthographic projections of adjacent monolayer structures in the first layer SL1 on the base substrate are spaced apart by a shortest distance d1 that ranges from 4.7 μm to 10.7 μm, e.g., from 4.7 μm to 5.7 μm, from 5.7 μm to 6.7 μm, from 6.7 μm to 7.7 μm, from 7.7 μm to 8.7 μm, from 8.7 μm to 9.7 μm, or from 9.7 μm to 10.7 μm. Alternatively, orthographic projections of adjacent single-layer structures in the first layer SL1 on the base substrate are spaced apart by a shortest distance of 7.7 μm. In some embodiments, orthographic projections of adjacent monolayer structures in the second layer SL2 on the base substrate are spaced apart by a shortest distance d2 that 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, for example. Alternatively, orthographic projections of adjacent single-layer structures in the second layer SL2 on the base substrate are spaced apart by a shortest distance of 7.7 μm.

Referring to fig. 3D, alternatively, orthographic projections of adjacent single-layer structures in the first layer SL1 and the second layer SL2 do not overlap each other.

Fig. 3E is a cross-sectional view of a plurality of adjacent single-layer structure ASLS in a single-layer region in some embodiments according to the present disclosure. Referring to fig. 3E, in some embodiments, orthographic projections of adjacent ones of the plurality of adjacent single-layer structures ASLS on the base substrate directly abut one another.

Fig. 3F is a cross-sectional view of a plurality of adjacent single-layer structure ASLS in a single-layer region in some embodiments according to the present disclosure. Referring to fig. 3F, in some embodiments, orthographic projections of adjacent single-layer structures of the plurality of adjacent single-layer structures ASLS on the base substrate at least partially overlap one another.

Referring to fig. 3A to 3C, in some embodiments, the first and second portions P1 and P2 of the respective double-layered structures are connected by a connection via cv extending through the touch insulating layer TI.

In some embodiments, orthographic projections of adjacent bilayer structures on the base substrate are spaced apart by a shortest distance d in the range of 3.0 μm to 5.0 μm, e.g., 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, orthographic projections of adjacent bilayer structures on the base substrate are separated by a shortest distance of 4.0 μm.

Fig. 4 is an enlarged partial 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. Fig. 5 is a further enlarged view of the first enlarged region of fig. 4. Referring to fig. 4 and 5, in some embodiments, a plurality of first double-layer structures MDLS1 of a plurality (multiple) of touch signal lines among a plurality of touch signal lines are respectively gathered in the first region 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 gathered in the second region R2. The plurality of first double-layer structures MDLS1 are respectively connected to the plurality of first single-layer structures MSLS1 (as similarly discussed in conjunction with fig. 2, 3A-3B). The first region R1 and the second region R2 are directly adjacent to each other.

In some embodiments, the plurality of first double-layer structures MDLS1 and the plurality of first single-layer structures MSLS1 are portions of the same type of touch signal line. In one example, the plurality of first double-layered structures MDLS1 and the plurality of first single-layered structures MSLS1 are portions of touch scan signal lines connected to the touch scan electrodes. In another example, the plurality of first double-layered structures MDLS1 and the plurality of first single-layered structures MSLS1 are portions of touch sensing signal lines connected to the touch sensing electrodes. In one example, the plurality of first double-layer structures MDLS1 and the plurality of first single-layer structures MSLS1 are portions of the plurality of first touch signal lines SGL 1. Regions corresponding to the first region R1 and the second region R2 are denoted as R1 'and R2' in fig. 1A.

In some embodiments, the plurality of connection points CP3 respectively connecting the plurality of first double-layer structures MDLS1 and the plurality of first single-layer structures MSLS1 are arranged along the seventh direction DR 7. Optionally, the 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 an inclination angle other than 90 degrees. In some embodiments, the second direction DR2 and the seventh direction DR7 intersect each other at an angle in the 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.

Fig. 6 is a sectional view taken along line D-D' in fig. 5. Referring to fig. 6, and as similarly described above in connection with fig. 3A-3D, in some embodiments, in the second region R2, at least two of the plurality of first single layer structures MSLS1 are in the first layer SL1 and the second layer SL2, respectively. In one example as shown in fig. 6, 3A to 3D, in the second region R2, a plurality of first single-layer structures MSLS1 are alternately in the first layers SL1 and the second layers SL 2.

In some embodiments, the plurality of first bilayer structures MDLS1 are substantially parallel to each other and respectively extend along the first direction DR 1; the plurality of first single-layer structures MSLS1 are substantially parallel to each other and respectively extend along the second direction DR 2. The first direction DR1 and the second direction DR2 are different from each other and cross 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 an inclination angle other than 90 degrees.

Fig. 8 is a further enlarged schematic view of the second enlarged region of fig. 4. Referring to fig. 4 and 8, in some embodiments, a plurality of first single-layer structures MSLS1 of a plurality of touch signal lines among the plurality of touch signal lines are respectively gathered in the second region R2; the plurality of second single-layer structures MSLS2 of the plurality of touch signal lines among the plurality of touch signal lines are respectively gathered in the third region R3. The plurality of first single-layer structures MSLS1 are respectively connected to the plurality of second single-layer structures MSLS 2. The second region R2 and the third region R3 are directly adjacent to each other.

In some embodiments, the plurality of first single-layer structures MSLS1 and the plurality of second single-layer structures MSLS2 are portions of the same type of touch signal lines. In one example, the plurality of first single-layer structures MSLS1 and the plurality of second single-layer structures MSLS2 are portions of touch scan signal lines connected to the touch scan electrodes. In another example, the plurality of first single-layer structures MSLS1 and the plurality of second single-layer structures MSLS2 are portions of touch sensing signal lines connected to the touch sensing electrodes. In one example, the plurality of first single-layer structures MSLS1 and the plurality of second single-layer structures MSLS2 are portions of the plurality of first touch signal lines SGL 1. In one example, the plurality of first single-layer structures MSLS1 and the plurality of second single-layer structures MSLS2 are portions of the plurality of second touch signal lines SGL 2. In one example, the plurality of first single-layer structures MSLS1 and the plurality of second single-layer structures MSLS2 are portions of the plurality of third touch signal lines SGL 3.

In some embodiments, the plurality of first single-layer structures MSLS1 are substantially parallel to each other and respectively extend along the second direction DR 2; the plurality of second single-layer structures MSLS2 are substantially parallel to each other and respectively extend along the third direction DR 3. 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 each other. Optionally, the second direction DR2 and the third direction DR3 intersect each other at an inclination angle other than 90 degrees. In some embodiments, the second direction DR2 and the third direction DR3 intersect each other at an angle in 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 each other at an angle of 20.03 degrees.

Fig. 9 is a sectional view taken along line E-E' in fig. 8. Referring to fig. 9, in some embodiments, in the second region R2, at least two of the plurality of first single-layer structures MSLS1 are in the first layer SL1 and the second layer SL2, respectively. In one example as shown in fig. 9 and 8, in the second region R2, a plurality of first single-layer structures MSLS1 are alternately in the first layer SL1 and the second layer SL 2. In some embodiments, in the third region R3, at least two of the plurality of second single layer structures MSLS2 are in the first layer SL1 and the second layer SL2, respectively. In one example as shown in fig. 9 and 8, in the third region R3, a plurality of second single-layer structures MSLS2 are alternately in the first layer SL1 and the second layer SL 2.

In some embodiments, a plurality of connection points CP1 respectively connecting the plurality of first single-layer structures MSLS1 and the plurality of second single-layer structures MSLS2 are arranged along the fourth direction DR 4. Optionally, the second direction DR2 and the fourth direction DR4 are two non-parallel directions, e.g., 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 an inclination angle other than 90 degrees. In some embodiments, the second direction DR2 and the fourth direction DR4 intersect each other at an angle in the range of 20 to 40 degrees, such as 20 to 25 degrees, 25 to 30 degrees, 30 to 35 degrees, or 35 to 40 degrees. Optionally, the second direction DR2 and the fourth direction DR4 intersect each other at an angle of 30.848 degrees.

In some embodiments, referring to fig. 4, 7, and 8, a plurality of second single-layer structures MSLS2 of a plurality of touch signal lines among the plurality of touch signal lines are respectively gathered in the third region R3; the plurality of second dual layer structures MDLS2 of the plurality of touch signal lines among the plurality of touch signal lines are respectively gathered in the fourth region R4. The plurality of second single-layer structures MSLS2 are respectively connected to the plurality of second double-layer structures MDLS 2. 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 at corner regions of the touch structure. For example, regions corresponding to the third region R3 and the fourth region R4 are denoted as R3 'and R4' in fig. 1A.

In some embodiments, the plurality of second single layer structures MSLS2 and the plurality of second double layer structures MDLS2 are part of the same type of touch signal line. In one example, the plurality of second single-layer structures MSLS2 and the plurality of second double-layer structures MDLS2 are portions of touch scan signal lines connected to the touch scan electrodes. In another example, the plurality of second single-layer structures MSLS2 and the plurality of second double-layer structures MDLS2 are portions of touch sensing signal lines connected to the touch sensing electrodes. In one example, the plurality of second single-layer structures MSLS2 and the plurality of second double-layer structures MDLS2 are portions of the plurality of first touch signal lines SGL 1. In one example, the plurality of second single-layer structures MSLS2 and the plurality of second double-layer structures MDLS2 are part of the plurality of second touch signal lines SGL 2. In one example, the plurality of second single-layer structures MSLS2 and the plurality of second double-layer structures MDLS2 are portions of the plurality of third touch signal lines SGL 3.

In some embodiments, the plurality of second single-layer structures MSLS2 are substantially parallel to each other and respectively extend along the third direction DR 3; the plurality of second dual-layer structures MDLS2 are substantially parallel to each other and respectively extend along the fifth direction DR 5.

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

In some embodiments, the third direction DR3 and the fifth direction DR5 are two non-parallel directions, e.g., the third direction DR3 and the fifth direction DR5 cross each other. Optionally, the third direction DR3 and the fifth direction DR5 intersect each other at an inclination angle other than 90 degrees. In some embodiments, the third direction DR3 and the fifth direction DR5 intersect each other at an angle less than 10 degrees.

Referring to fig. 9, in some embodiments, in the third region R3, a plurality of second single-layer structures MSLS2 are alternately located in the first layer SL1 and the second layer SL 2.

In some embodiments, the plurality of second connection points CP2 respectively connecting the plurality of second single-layer structures MSLS2 and the plurality of second double-layer structures MDLS2 are arranged along the sixth direction DR 6.

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.

In some embodiments, the second direction DR2 and the sixth direction DR6 are two non-parallel directions, e.g., the second direction DR2 and the sixth direction DR6 cross each other. Optionally, the second direction DR2 and the sixth direction DR6 intersect each other at an inclination angle other than 90 degrees. In some embodiments, the second direction DR2 and the sixth direction DR6 intersect each other at an angle less than 10 degrees.

Fig. 10 is a sectional view taken along line F-F' in fig. 8. Referring to fig. 8 and 10, in some embodiments, the touch structure includes a via v extending through the touch insulating layer TI at each second connection point CP2, through which the material in the second layer SL2 is connected to the material in the first layer SL 1.

Fig. 11 is a partial enlarged view of a touch structure in a region transition from a touch region to a peripheral region in accordance with some embodiments of the present disclosure. Fig. 12 is a further enlarged view of fig. 11. Referring to fig. 11 and 12, a plurality of third dual layer structures MDLS3 of a plurality of touch signal lines among the plurality of touch signal lines are respectively gathered in the fifth region R5; a plurality of fourth dual layer structures MDLS4 of a plurality of touch signal lines among the plurality of touch signal lines are respectively gathered 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 gathered in the seventh region R7. The plurality of fourth double-layer structures MDLS4 in the sixth region R6 are connected to the plurality of third single-layer structures MSLS3 in the seventh region R7, respectively. The plurality of third single-layer structures MSLS3 in the seventh region R7 are connected to the plurality of third double-layer structures MDLS3 in the fifth region R5, respectively. The sixth region R6 is directly adjacent to the seventh region R7. The seventh region R7 is directly adjacent to the fifth region R5.

In some embodiments, the plurality of third double-layer structures MDLS3, the plurality of fourth double-layer structures MDLS4, and the plurality of third single-layer structures MSLS3 are portions of the same type of touch signal lines. In one example, the plurality of third double-layer structures MDLS3, the plurality of fourth double-layer structures MDLS4, and the plurality of third single-layer structures MSLS3 are portions of touch scan signal lines connected to the touch scan electrodes. In another example, the plurality of third double-layer structures MDLS3, the plurality of fourth double-layer structures MDLS4, and the plurality of third single-layer structures MSLS3 are portions of touch sensing signal lines connected to the touch sensing electrodes. In one example, the plurality of third double-layer structures MDLS3, the plurality of fourth double-layer structures MDLS4, and the plurality of third single-layer structures MSLS3 are part of the plurality of first touch signal lines SGL 1. In one example, the plurality of third double-layer structures MDLS3, the plurality of fourth double-layer structures MDLS4, and the plurality of third single-layer structures MSLS3 are portions of the plurality of second touch signal lines SGL 2. In one example, the plurality of third double-layer structures MDLS3, the plurality of fourth double-layer structures MDLS4, and the plurality of third single-layer structures MSLS3 are part of the plurality of third touch signal lines SGL 3.

Fig. 13 shows a corresponding one of the plurality of third single-layer structures connecting a corresponding one of the plurality of third double-layer structures and a corresponding one of the plurality of fourth double-layer structures. Referring to fig. 13, a corresponding one of the plurality of third single-layer structures MSLS3 is a half-ring structure connecting a corresponding one of the plurality of third double-layer structures MDLS3 and a corresponding one of the plurality of fourth double-layer structures MDLS 4. The half-ring structure includes two parallel portions PP1 and PP2 extending in the second direction DR2, respectively, and a connecting portion CPP connecting the two parallel portions PP1 and PP2 together.

In some embodiments, the plurality of third double-layer structures MDLS3 are substantially parallel to each other and extend along the first direction DR1, respectively; the plurality of fourth double-layer structures MDLS4 are substantially parallel to each other and respectively extend along the first direction DR 1. The first direction DR1 and the second direction DR2 are different from each other and cross 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 an inclination angle other than 90 degrees.

Fig. 14 is a cross-sectional view taken along line G-G' in fig. 12, and referring to fig. 12 and 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 SL 2. In one example as shown in fig. 14 and 12, in the seventh region R7, a plurality of third single-layer structures MSLS3 are alternately located in the first layer SL1 and the second layer SL 2.

Referring to fig. 11 and 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 gathered 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 DR 2. The plurality of fourth single-layer structures MSLS4 are connected to the plurality of third double-layer structures MDLS3, respectively. As shown in fig. 4, 5, 11 and 12, the plurality of fourth single-layer structures MSLS4 is at least a subset of the plurality of first single-layer structures MSLS 1.

Fig. 15 is a sectional view taken along line H-H' in fig. 1A. Fig. 16 is a sectional view taken along line I-I' in fig. 1A. As shown in fig. 1A, 15 and 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 first mesh electrodes TE1 and the second mesh electrodes TE2 are located in the second layer SL 2. The touch structure further comprises a plurality of touch electrode bridges EB located in the first layer SL 1; and a via hole Vb extending through the touch insulating layer TI. Alternatively, the plurality of touch electrode bridges EB extend through the through holes Vb, respectively, to connect adjacent second mesh blocks in corresponding ones of the plurality of columns of the plurality of second mesh electrodes TE2, respectively.

Fig. 17 is a schematic diagram illustrating a touch structure in some embodiments according to the present disclosure. Referring to fig. 17, in some embodiments, the touch structure includes a plurality of first mesh electrodes TE1 and a plurality of second mesh electrodes TE 2. Optionally, the touch structure is a mutual capacitance type touch structure. Alternatively, the plurality of first mesh electrodes TE1 are a plurality of touch scan electrodes, and the plurality of second mesh electrodes TE2 are a plurality of touch sense electrodes. Alternatively, 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 confined in the touch region TCR and not in the window region WR surrounded by the touch region TCR. For example, the touch structure may be a touch structure in a display panel, where touch region TCR substantially overlaps a display region of the display panel, and window region WR is a region in the display panel having a hole configured for mounting an accessory (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 region TCR. In one example, in the window region WR, there are no display elements and touch structures of the display panel; in at least a portion of the display area or the touch area TCR, there are both display elements and touch structures of the display panel.

Referring to fig. 17, in some embodiments, the plurality of mesh touch electrodes TE1 are arranged in a plurality of rows, each of which is a respective one of the plurality of mesh touch electrodes TE 1; the plurality of mesh scan electrodes TE2 are arranged in a plurality of columns, each of which is a corresponding one of the plurality of second mesh electrodes TE 2. In some embodiments, at least one of the rows of first mesh electrodes TE1 passes through window region WR. For example, as shown in fig. 17, the windows of the plurality of first mesh electrodes TE1 pass through the row Rwc through the window region WR. The touch electrodes in window crossing row Rwc are separated into two portions (a portion to the left of window region WR and a portion to the right of window region WR) by window region WR. In some embodiments, at least one of the columns of second mesh electrodes TE2 passes through window region WR. For example, as shown in fig. 17, the window crossing columns Cwc in the plurality of second mesh electrodes TE2 cross the window region WR. The touch electrodes in the window-crossing column Cwc are spaced apart into two parts (a part on the upper side of the window region WR and a part on the lower side of the window region WR) by the window region WR.

Fig. 18A is a schematic diagram illustrating window regions in some embodiments according to the present disclosure. Fig. 18B is an enlarged view of a touch structure surrounding a window area in some embodiments according to the present disclosure. Fig. 18C is a further enlarged view of the touch structure surrounding the window area in some embodiments according to the present disclosure. Referring to fig. 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. Referring to fig. 18A through 18C, in some embodiments, the window crossing rows Rwc of the plurality of first mesh electrodes TE1 include first mesh blocks MB1 and second mesh blocks MB2 located at the first side S1 and the second side S2, respectively, of the window region WR; a first conductive plate CP1 directly connected to the plurality of grid lines of the first grid block MB 1; a second conductive plate CP2 directly connected to the plurality of grid lines of the second grid block MB 2; and a first conductive bridge CB1 connecting the first conductive plate CP1 and the second conductive plate CP 2.

In the present touch structure, adjacent mesh blocks (e.g., the first mesh block MB1 and the second mesh block MB2) spaced apart by the window region WR are connected by a conductive connection bridge (e.g., the first conductive bridge CB1) with the aid of conductive plates (e.g., the first conductive plate CP1 and the second conductive plate CP 2). Since forming a connecting bridge generally involves forming through-holes to connect corresponding mesh electrodes, it is extremely difficult to accurately connect the mesh electrode wires with the connecting bridge without a conductive plate as an intermediate. The novel and unique structure of the present touch structure ensures that adjacent grid blocks spaced apart by window region WR connect to transmit touch signals.

Referring to fig. 18A and 18C, the first conductive plate CP1, the second conductive plate CP2, and the first conductive bridge CB1 surround the first portion P1, the second portion P2, and the third portion P3 of the periphery of the window region WR, respectively. Optionally, the third portion P3 partially overlaps the first portion P1 and partially overlaps the second portion P2. Optionally, first portion P1 is located on first side S1 of window region WR; the second portion P2 is located at the second side S2 of the window region WR; and the third portion P3 is located at the fourth side S4 of the window region WR.

Referring to fig. 18A through 18C, in some embodiments, the window-crossing column Cwc of the plurality of second mesh electrodes TE2 includes a third mesh block MB3 and a fourth mesh block MB4, which are located at the third side S3 and the fourth side S4 of the window region WR, respectively; a third conductive plate CP3 directly connected to the plurality of grid lines of the third grid block MB 3; a fourth conductive plate CP4 directly connected to the plurality of grid lines of the fourth grid block MB 4; and a second conductive bridge CB2 connecting the third conductive plate CP3 and the fourth conductive plate CP 4.

Referring to fig. 18A and 18C, the third conductive plate CP3, the fourth conductive plate CP4, and the second conductive bridge CB2 surround the fourth portion P4, the fifth portion P5, and the sixth portion P6 of the periphery of the window region WR, respectively. In one example, the third conductive plate CP3, the fourth conductive plate CP4, and the second conductive bridge CB2 are part of a unitary structure; the third conductive plate CP3 includes a first arc-shaped plate, the fourth conductive plate CP4 includes a second arc-shaped plate, and the second conductive bridge CB2 includes a third arc-shaped bridge. In another example, the third arc is not concentric with respect to the first arc and is not concentric with respect to the second arc, so a boundary between the third conductive plate CP3 and the second conductive bridge CB2 and a boundary between the fourth conductive plate CP4 and the second conductive bridge CB2 may 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, and thus a boundary between the third conductive plate CP3 and the second conductive bridge CB2 and a boundary between the fourth conductive plate CP4 and the second conductive bridge CB2 can be recognized. Optionally, the sixth portion P6 partially overlaps the fourth portion P4 and partially overlaps the fifth portion P5. Optionally, the fourth portion P4 is located at a third side S3 of the window region WR; the fifth part P5 is located at the fourth side S4 of the window region WR; and sixth portion P6 is located at second side S2 of window region WR.

Referring to fig. 18A-18C, in some embodiments, the window crossing row Rwc of the plurality of first mesh electrodes TE1 further includes a third conductive bridge CB3 connecting the first conductive plate CP1 and the second conductive plate CP 2. Referring to fig. 18A and 18C, the first conductive plate CP1, the second conductive plate CP2, and the third conductive bridge CB3 surround the first portion P1, the second portion P2, and the seventh portion P7 of the periphery of the window region WR, respectively. Optionally, the seventh portion P7 partially overlaps the first portion P1 and partially overlaps the second portion P2. Optionally, first portion P1 is located on first side S1 of window region WR; the second portion P2 is located at the second side S2 of the window region WR; and the seventh part P7 is located at the third side S3 of the window region WR.

Referring to fig. 18A-18C, in some embodiments, the window-crossing column Cwc of the plurality of second mesh electrodes TE2 further includes a fourth conductive bridge CB4 connecting the third conductive plate CP3 and the fourth conductive plate CP 4. Referring to fig. 18A and 18C, the third conductive plate CP3, the fourth conductive plate CP4, and the fourth conductive bridge CB4 surround the fourth portion P4, the fifth portion P5, and the eighth portion P8 of the periphery of the window region WR, respectively. Optionally, the eighth portion P8 partially overlaps the fourth portion P4 and partially overlaps the fifth portion P5. Optionally, fourth portion P4 is located on a third side S3 of window region WR; the fifth part P5 is located at the fourth side S4 of the window region WR; and eighth portion P8 is located at first side S1 of window region WR.

Referring to FIG. 17, in some embodiments, the window-crossing row Rwc also includes a plurality of first non-window grid blocks NWB1, and the window-crossing column Cwc also includes a plurality of second non-window grid blocks NWB 2. Optionally, due to the presence of the window region WR, the area of at least the first mesh block MB1 is smaller (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 mesh blocks NWB 1. Alternatively, the area of the first mesh block MB1 is smaller than that of each of the plurality of first non-window mesh blocks NWB1, and the area of the second mesh block MB2 is also smaller than that of each of the plurality of first non-window mesh blocks NWB 1. Optionally, due to the presence of the window region WR, the area of at least the third mesh block MB3 is smaller than the area of each of the plurality of second non-window mesh blocks NWB 2. Alternatively, the area of the third mesh block MB3 is smaller than that of each of the plurality of second non-window mesh blocks NWB2, and the area of the fourth mesh block MB4 is also smaller than that of each of the plurality of second non-window mesh blocks NWB 2.

In another aspect, the present disclosure provides a display device. In some embodiments, a display device includes a display panel; a touch structure described herein or made 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, notebook computers, digital photo albums, GPS, and the like. Optionally, the display device is an organic light emitting diode display device. Optionally, the display device is a liquid crystal display device.

Fig. 19 is a cross-sectional view of a display panel in some embodiments according to the present disclosure. Referring to fig. 19, in the display region, 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 cathode CD, A first inorganic encapsulation layer CVD1 on a side of the cathode CD remote from the light-emitting layer EL, an organic encapsulation layer IJP on a side of the first inorganic encapsulation layer CVD1 remote from the cathode CD, a second inorganic encapsulation layer CVD2 on a side of the organic encapsulation layer IJP remote from the first inorganic encapsulation layer CVD1, a buffer layer BUF on a side of the second inorganic encapsulation layer CVD2 remote from the organic encapsulation layer IJP, a touch insulating layer TI on a side of the buffer layer BUF remote from the second inorganic encapsulation layer CVD2, touch electrodes (for example, a plurality of first touch electrodes TE1 and a plurality of second touch electrodes TE2 as shown in fig. 19) on a side of the touch insulating layer TI remote from the buffer layer BUF, and an overcoat OC on a side of the touch electrodes remote from the touch insulating layer TI.

Fig. 20 is a schematic diagram illustrating a display area and a peripheral area in a display device in some embodiments according to the present disclosure. Referring to fig. 20, in some embodiments, the display apparatus includes a display area DA and a peripheral area PA. Optionally, the display area DA is substantially the same as the touch area TCA in fig. 1B, and the peripheral area PA is substantially the same as the peripheral area PA in fig. 1B. In some embodiments, the peripheral area PA includes a first sub-area PA1 located at the first side S1 of the display area DA, a second sub-area PA2 located at the second side S2 of the display area DA, a third sub-area PA3 located at the third side S3 of the display area DA, and a fourth sub-area PA4 located at the 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 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 connected to an integrated circuit (e.g., an integrated touch circuit).

In some embodiments, the first sub area PA1 has a first shortest width w1 in a direction from the display area DA to the first sub area PA 1. Optionally, the second sub area PA2 has a second shortest width w2 in a direction from the display area DA to the second sub area PA 2. Optionally, the third sub area PA3 has a third shortest width w3 in a direction from the display area DA to the third sub area PA 3. Optionally, the fourth sub area PA4 has a fourth shortest width w4 in a direction from the display area DA to the fourth sub area PA 4. In some embodiments, the first shortest width w1 is greater than at least one of the other shortest widths, for example, greater than at least one of the second shortest width w2, the third shortest width w3, or the fourth shortest width w 4. Optionally, the first shortest width w1 is greater than any 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 w 4.

For example, the first sub area PA1 having the peripheral area of the above-described double layer area and single layer area has a first shortest width w1 in a direction from the touch control area to the first sub area PA 1. The first shortest width w1 may decrease from 1.36mm to 1.076 mm. The reference value of 1.36mm may be a reference first shortest width of the corresponding peripheral region first sub-region in the reference display device without the double layer region and the single layer region of the present disclosure. In one example, the touch signal lines of the reference display device adopt a double-layer structure in the entire peripheral area. By forming the touch signal lines to have the complex structure discussed in the present disclosure, the first shortest width in the first sub-area can be significantly reduced as compared to the touch signal lines in the reference display device.

As used herein, the term "display area" refers to an area of a display substrate (e.g., an opposite substrate or an array substrate) in a display panel on which an image is actually displayed. Alternatively, the display region may include a sub-pixel region and an inter-sub-pixel region. The sub-pixel region refers to a light emitting region of a sub-pixel, for example, a region corresponding to a pixel electrode in a liquid crystal display, or a region corresponding to a light emitting layer in an organic light emitting diode display panel. The inter-subpixel region refers to a region between adjacent subpixel regions, for example, a region corresponding to a black matrix in a liquid crystal display, or a region corresponding to a pixel defining layer in an organic light emitting diode display panel. Optionally, the inter-sub-pixel region is a region between adjacent sub-pixel regions in the same pixel. Optionally, the inter-sub-pixel region is a region between two adjacent sub-pixel regions in two adjacent pixels.

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: a double-layer structure is formed in the double-layer region and a single-layer structure is formed in the single-layer region. Optionally, the double-layer region and the single-layer region are connected in a first sub-region of the peripheral region in which the plurality of touch signal lines are connected to an integrated circuit, the first sub-region having a first shortest width in a direction from the touch region to the first sub-region, the first shortest width being larger than a shortest width of at least one sub-region of sub-regions of the peripheral region other than the first sub-region. Alternatively, a plurality of adjacent double-layer structures in the double-layer region are formed to be connected to a plurality of adjacent single-layer structures in the single-layer region, respectively. Alternatively, at least two of the plurality of adjacent single-layer structures are formed to be located in the first layer and the second layer, respectively. Optionally, the method further comprises forming a touch insulating layer between the first layer and the second layer.

The foregoing descriptions of embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form or exemplary embodiments disclosed. The foregoing description is, therefore, to be considered illustrative rather than restrictive. Obviously, many modifications and variations will be apparent to practitioners skilled in the art. The embodiments were chosen and described in order to explain the principles of the invention and its best mode practical application to enable one skilled in the art to understand the invention for various embodiments and with various modifications as are suited to the particular use or implementation contemplated. It is intended that the scope of the invention be defined by the following claims and their equivalents, in which all terms are meant in their broadest reasonable sense unless otherwise indicated. Thus, the terms "present invention" and the like do not necessarily limit the scope of the claims to particular embodiments, and references to example embodiments of the invention are not intended to limit the invention, and no such limitation is to be inferred. The invention is to be limited only by the spirit and scope of the appended claims. Furthermore, 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 such nomenclature, unless a specific number has been given. Any advantages and benefits described may not apply to all embodiments of the invention. It will be appreciated that variations to the described embodiments may be made by those skilled in the art 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 dedicated to the public regardless of whether the element or component is explicitly recited in the appended claims.

Claims

1. A touch structure 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 region and a single-layer structure in a single-layer region, wherein the double-layer region and the single-layer region are connected in a first sub-region of the integrated circuit in the peripheral region, the first sub-region having a first shortest width in a direction from the touch region to the first sub-region, the first shortest width being greater than a shortest width of at least one sub-region of sub-regions of the peripheral region other than the first sub-region;

a plurality of adjacent double-layer structures in the double-layer region are respectively connected to a plurality of adjacent single-layer structures in the single-layer region;

at least two of the plurality of adjacent single-layer structures are located in a first layer and a second layer, respectively; and

the touch structure further includes a touch insulating layer between the first layer and the second layer.

2. The touch structure of claim 1, wherein the first shortest width is greater than a shortest width of any one of sub-regions of the peripheral region other than the first sub-region.

3. The touch structure of claim 1 or 2, wherein each dual-layer structure comprises a first portion in the first layer and a second portion in the second layer;

a first adjacent respective single-layer structure in said second layer is connected to a respective second portion of a first adjacent double-layer structure; and

a second adjacent respective single-layer structure in the first layer is connected to a respective first portion of a second adjacent double-layer structure.

4. The touch structure of claim 3, wherein the first portion and the second portion are connected by a connecting via 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 gathered 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 gathered in a second region;

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;

at least two of the plurality of first monolayer 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 cross each other at an angle greater than zero.

6. The touch structure of 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 cross each other at an angle in a range of 6 degrees to 15 degrees.

7. The touch structure of any one of claims 1 to 6, wherein a plurality of first single-layer structures of a plurality of touch signal lines of the plurality of touch signal lines are respectively gathered 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 gathered 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 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 monolayer structures are in the first layer and the second layer, respectively; and

the second direction and the third direction are different from each other and cross each other at an angle greater than zero.

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

9. The touch structure of claim 7 or 8, 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 in a range of 20 degrees to 40 degrees.

10. The touch structure according to any one of claims 1 to 9, wherein the plurality of second single-layer structures of the plurality of touch signal lines are respectively gathered 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 gathered in a fourth area;

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 monolayer structures are in the first layer and the second layer, respectively;

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 connecting the plurality of second single-layer structures and the plurality of second double-layer structures, respectively, are arranged along a sixth direction.

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

12. The touch structure of claim 10 or 11, wherein the touch structure comprises a via extending through the touch insulating layer at each second connection point, the material in the second layer being connected to the material in the first layer through the via.

13. The touch structure according to any one of claims 1 to 12, wherein a plurality of third double-layer structures of a plurality of touch signal lines of the plurality of touch signal lines are respectively gathered in a fifth area;

a plurality of fourth double-layer structures of the plurality of touch signal lines among the plurality of touch signal lines are respectively gathered in a sixth area;

a plurality of third single-layer structures of the plurality of touch signal lines among the plurality of touch signal lines are respectively gathered in a seventh area;

a respective one of the plurality of third single-layered structures is a half-ring structure connecting the respective one of the plurality of third double-layered structures and the respective one of the plurality of fourth double-layered structures;

the semi-ring structure comprises two parallel parts extending along a second direction respectively and a connecting part connecting the two parallel parts together;

at least two of the plurality of third monolayer structures are in the first layer and the second layer, respectively;

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;

14. The touch structure of claim 13, wherein a plurality of fourth single-layer structures of the plurality of touch signal lines are respectively gathered in an eighth area;

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 monolayer structures is at least a subset of the plurality of first monolayer structures.

15. The touch structure of any one of claims 1 to 14, wherein the plurality of touch electrodes comprises 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 of claim 15, further comprising:

a plurality of touch electrode bridges in the first layer; and

a via extending through the touch insulating layer;

wherein the plurality of touch electrode bridges respectively extend through the through holes to respectively connect adjacent second mesh blocks in respective ones of the plurality of columns of the plurality of second mesh electrodes.

17. The touch structure of claim 15 or 16, wherein the plurality of touch signal lines comprise:

a plurality of first touch signal lines connected to the plurality of first mesh electrodes, respectively;

a plurality of second touch signal lines connected to first terminals of the plurality of second mesh electrodes, respectively; and

a plurality of third touch signal lines respectively connected to second terminals of the plurality of second mesh electrodes.

18. The touch structure of any of claims 1-17, wherein the touch structure is confined in a touch area and is absent in a window area at least partially surrounded by the touch area;

wherein the window-crossing rows of the first plurality of mesh electrodes comprise:

first and second gridblocks located on first and second sides of the window region, respectively;

a first conductive plate directly connected to the plurality of grid lines of the first grid block;

a second conductive plate directly connected to the 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 surround a first portion, a second portion, and a third portion, respectively, of a perimeter of the window area;

the first and second conductive plates are located in the second layer; and

the first conductive bridge is located in the first layer.

19. The touch structure of any one of claims 1 to 18, wherein each of the plurality of touch signal lines has a line width of 2.5 μ ι η to 4.5 μ ι η;

orthographic projections of the adjacent single-layer structures on the base substrate are separated by a shortest distance, and the shortest distance is in a range of 1.1 mu m to 3.1 mu m;

orthographic projections of adjacent single-layer structures in the first layer on the base substrate are separated by a shortest distance, and the shortest distance is in a range of 4.7-10.7 μm; and

orthographic projections of adjacent single-layer structures in the second layer on the base substrate are spaced apart by a shortest distance in a range of 4.7 μm to 10.7 μm.

20. The touch structure of any one of claims 1 to 19, wherein at least two adjacent single-layer structures in the first and second layers, respectively, are electrically connected to adjacent rows of touch electrodes.

21. The touch structure of any one of claims 1 to 20, wherein the first shortest width is smaller than a reference first shortest width of a corresponding first sub-area in a reference touch structure in which the touch signal lines have a double-layer structure in the entire peripheral area.

22. A display apparatus, comprising:

a display panel;

the touch structure of any one of claims 1-21; and

an integrated circuit.

23. The display device of claim 22, wherein the display panel comprises:

a plurality of light emitting elements;

an encapsulation layer on the plurality of light emitting elements, wherein the encapsulation layer comprises a first inorganic encapsulation layer, an organic encapsulation layer on a side of the first inorganic encapsulation layer away from the plurality of light emitting elements, a second inorganic encapsulation layer on a side of the organic encapsulation layer away from the first inorganic encapsulation layer; and

a buffer layer located on a side of the second inorganic encapsulation layer away from the organic encapsulation layer;

wherein the touch insulating layer is positioned on one side of the buffer layer far away from the second inorganic packaging layer.