CN113485577B

CN113485577B - Touch Panel and Touch Display Device

Info

Publication number: CN113485577B
Application number: CN202110742099.2A
Authority: CN
Inventors: 闫东
Original assignee: Hefei Visionox Technology Co Ltd
Current assignee: Hefei Visionox Technology Co Ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2023-08-25
Anticipated expiration: 2041-06-30
Also published as: CN113485577A

Abstract

The disclosure provides a touch panel and a touch display device, wherein the touch panel is formed by dividing a touch template along a cutting line, and the touch template further comprises a touch functional layer. The touch control functional layer is positioned in the touch control functional area and comprises a plurality of first electrodes and a plurality of second electrodes, the first electrodes are arranged in parallel, each first electrode of the plurality of first electrodes and each second electrode of the plurality of second electrodes are intersected with each other to form a plurality of touch control units, at least one of the plurality of touch control units is arranged as a first type touch control unit, the part of the first electrode, which is positioned in each first type touch control unit, comprises at least two parallel first sub-electrodes, the part of the second electrode, which is positioned in each first type touch control unit, comprises at least two parallel second sub-electrodes, and the first sub-electrodes and the second sub-electrodes are intersected with each other; the cutting line passes through the first type of touch control unit. When the touch panel is obtained by dividing the cutting lines, the risk of signal line crossing can be reduced.

Description

Touch panel and touch display device

Technical Field

The disclosure relates to the technical field of touch control, in particular to a touch panel and a touch display device.

Background

Applications of electronic products with touch panels are becoming popular in the market, and as the requirements of users on functions, appearances, etc. of the electronic products are becoming higher, the touch panels are further designed according to the added functions or specific appearances, etc. after the touch panels are designed, the designs may involve shape changes, and in the areas where the shapes change, the touch functions are prone to be bad.

Disclosure of Invention

In view of this, the disclosure provides a touch panel and a touch display device, in which a touch electrode (a first electrode and a second electrode described below) of the touch panel is configured to include at least two parallel sub-electrodes, and signal lines (a first sub-signal line and a second sub-signal line described below) are configured for the sub-electrodes, so that when the touch panel is configured, a risk of crossing the signal lines can be reduced, a limitation on the configured design is reduced, a design difficulty of the touch panel is simplified, and a process cost is reduced.

The first aspect of the present disclosure provides a touch panel formed by dividing a touch template along a cutting line, the touch template including a touch functional area. The touch template further comprises a touch functional layer, a plurality of first signal lines and a plurality of second signal lines. The touch control functional layer is located the touch control functional area, the touch control functional layer includes a plurality of first electrodes and a plurality of second electrodes of arranging side by side, every first electrode of a plurality of first electrodes and every second electrode of a plurality of second electrodes cross each other and form a plurality of touch control units, at least one of a plurality of touch control units sets up to first type touch control unit, the part that lies in every first type touch control unit of first electrode includes two at least parallelly connected first sub-electrodes, the part that lies in every first type touch control unit of second electrode includes two at least parallelly connected second sub-electrodes, first sub-electrode and second sub-electrode are crisscrossed each other. The cutting line passes through the first type of touch units, and the rest part of the first type of touch units divided by the cutting line is the second type of touch units in the touch panel.

In a touch panel provided in one embodiment of the first aspect of the present disclosure, the test panel includes a plurality of first signal lines and a plurality of second signal lines. The first signal line and the second signal line are located on different sides of the touch functional area, wherein at least one first signal line and at least one second signal line are connected with the first type of touch unit, the first signal line connected with the first type of touch unit comprises at least two first sub-signal lines, the first sub-signal lines are correspondingly connected with the first sub-electrodes, the second signal line connected with the first type of touch unit comprises at least two second sub-signal lines, and the second sub-signal lines are correspondingly connected with the second sub-signal lines.

In the above scheme, the first electrode and the second electrode form at least four intersecting points in each first type touch unit, so that electric fields in the first type touch units are distributed more uniformly, when the touch template is subjected to special-shaped design to obtain a touch panel, the first type touch units need to be cut to form second type touch units, and the first type touch units can allow larger cutting area while at least one intersecting point exists, so that limitation (such as size limitation) on special-shaped design is reduced; in addition, the sub-electrodes (the first sub-electrode and the second sub-electrode) of the first electrode and the second electrode are respectively connected with the sub-signal lines (the first sub-signal line and the second sub-signal line) of the signal lines (the first signal line and the second signal line), and under the condition of at least one cross point, the arrangement mode of the sub-signal lines is not required to be changed, so that the touch capacitance can still be formed in the second type touch control unit, parasitic capacitance can not be formed between the sub-signal lines due to the cross point, and the sensitivity of the touch control function of the touch control panel is ensured.

In a touch panel provided in a specific embodiment of the first aspect of the present disclosure, the touch functional area includes a first area and a second area that remain after being divided by the touch template along the dicing line, and the area where the second type of touch unit is located is the second area. The second type of touch control unit comprises a third sub-electrode formed by dividing the first sub-electrode by a cutting line and a fourth sub-electrode formed by dividing the second sub-electrode by the cutting line. The number of crossing points between the third sub-electrode and the fourth sub-electrode in the second type touch unit is not less than 1. For example, further, the second area is located at an edge area of the touch panel. For example, still further, the second area is located at an angle of the touch panel, where the angle is R.

In a touch panel provided in a specific embodiment of the first aspect of the present disclosure, a portion of each first electrode located in the first type touch unit includes M first sub-electrodes, a portion of each second electrode located in the first type touch unit includes N second sub-electrodes, M and N are positive integers not less than 2, the number of intersecting points in the first type touch unit is m×n, the number of intersecting points of the third sub-electrode and the fourth sub-electrode in the second type touch unit is V, and V is 1.ltoreq.v.ltoreq.m×n, for example, further, V is 1.ltoreq.v < m×n.

In the above scheme, compared with the first type of touch units, the number of the cross points of the second type of touch units is allowed to be reduced, so that the second area of the touch panel is allowed to be specially designed, and the cross points among the signal lines are not caused.

In a touch panel provided in an embodiment of the first aspect of the present disclosure, a ratio of an area of the second type of touch unit to an area of the first type of touch unit is not less than 1/(m×n) and less than 1-1/(m×n), for example, further, a ratio of an area of the second type of touch unit to an area of the first type of touch unit is less than 1/2, and 2V < m×n.

In the above scheme, compared with the first type of touch units, the area of the second type of touch units can be reduced by more than half, and the signal lines can still not cross.

In a touch panel provided in a specific implementation manner of the first aspect of the present disclosure, touch units of the touch template are all set as the first type of touch units.

In the above scheme, uniformity of electric field distribution of the whole touch functional area of the touch panel is improved, namely, accuracy and sensitivity of touch detection of the whole touch functional area are improved, in addition, any area of the touch panel is allowed to be specially designed, and the risk of crossing of signal lines with specially designed areas is reduced.

In a touch panel provided in a specific implementation manner of the first aspect of the present disclosure, touch units of a touch template are divided into a first type of touch unit and a third type of touch unit, and a portion of the first electrode and the second electrode in each third type of touch unit forms an intersection point.

In the above scheme, the structural complexity of the whole touch panel can be reduced, which is equivalent to reducing the design difficulty of the touch panel and simplifying the manufacturing process, in addition, special-shaped design is carried out on a specific area of the touch panel, and the signal wires in the third type of touch units do not need to be provided with sub-signal wires, so that the wiring quantity of the signal wires can be reduced, and the frame extremely narrow design of the touch panel is facilitated.

In a touch panel provided in one embodiment of the first aspect of the present disclosure, for a first sub-signal line and a second sub-signal line connected to the same second type of touch unit of the second area, an orthographic projection of the first sub-signal line on a surface of the touch panel and an orthographic projection of the second sub-signal line on the surface of the touch panel are spaced from each other.

In a touch panel provided in a specific embodiment of the first aspect of the present disclosure, each first electrode defines a first channel, each second electrode defines a second channel, and an overlapping area of the first channel and the second channel is an area where the touch unit is located.

In a touch panel provided in one embodiment of the first aspect of the present disclosure, each first signal line includes a first main signal line, and one end of a first sub signal line included in each first signal line is connected to the first main signal line and the other end is connected to the first sub electrode; each of the second signal lines includes a second main signal line, and each of the second signal lines includes a second sub-signal line having one end connected to the second main signal line and the other end connected to the second sub-electrode.

In a touch panel provided in one specific embodiment of the first aspect of the present disclosure, each first signal line includes a first upper signal line and a first lower signal line connected in parallel, at least part of the first upper signal line and the first lower signal line together form a first main signal line; and/or, each second signal line comprises a second upper signal line and a second lower signal line which are connected in parallel, and at least part of the second upper signal line and the second lower signal line jointly form a second main signal line. For example, further, the first upper signal line and the first lower signal line together constitute a first main signal line and a first sub signal line. For example, further, the second upper signal line and the second lower signal line together constitute a second main signal line and a second sub signal line.

In the above-described configuration, the first main signal line of the first signal line and/or the second main signal line of the second signal line are constituted by the upper and lower signal lines (the first upper signal line and the first lower signal line, or the second upper signal line and the second lower signal line) connected in parallel, and the cross-sectional area of the first signal line and/or the second signal line can be increased by connecting in parallel, so that the resistance of the first signal line and/or the second signal line can be reduced, and the power consumption can be reduced.

In a touch panel provided in a specific embodiment of the first aspect of the present disclosure, the touch panel further includes at least one third signal line and at least one fourth signal line. The third signal line is connected with the second type of touch control unit and comprises third sub-signal lines which are connected with the third sub-electrodes in a one-to-one correspondence manner. The fourth signal wire is connected with the second type touch control unit and comprises fourth sub-signal wires which are connected with the fourth sub-electrodes in a one-to-one correspondence manner. On the surface of the touch substrate, the orthographic projection of the third signal line and the orthographic projection of the fourth signal line are spaced from each other. For example, the third signal line is divided by the first signal line through a dicing line, and the fourth signal line is divided by the second signal line through a dicing line.

In the above-mentioned scheme, in the process of dividing the first type of touch units by the dicing lines to obtain the second type of touch units, the first sub-signal line of the first signal line and the second sub-signal line of the second signal line connected to the first type of touch units may be simultaneously divided by the dicing lines to disconnect the connection with the corresponding first sub-electrode (after division, the third sub-electrode) and the second sub-electrode (after division, the fourth sub-electrode), so that the first sub-signal line and the second sub-signal line after division by the dicing lines need to be extended to connect with the divided first sub-electrode (i.e., the third sub-electrode) and the second sub-electrode (i.e., the fourth sub-electrode), and in the extending process of the first sub-signal line and the second sub-signal line, no cross occurs between the first sub-signal line and the second sub-signal line, i.e., no cross occurs between the third sub-signal line and the fourth sub-signal line. In the above process, the first sub signal line is extended to form a third sub signal line, and accordingly, the first signal line is formed to the third signal line, and the second sub signal line is formed to the fourth sub signal line, and accordingly, the second signal line is formed to the fourth signal line.

In a touch panel provided in one specific embodiment of the first aspect of the present disclosure, the touch functional layer further includes an insulating layer. The first electrode and the second electrode are formed by the same layer and the same material, the insulating layer covers the same layer of the first electrode and the second electrode, the touch control functional layer further comprises a plurality of conductive bridges which are positioned on one side of the insulating layer, which is away from the first electrode, the conductive bridges are positioned at the crossing points of the first sub-electrode and the second sub-electrode, the first sub-electrode is disconnected at the crossing points of the first sub-electrode and the second sub-electrode, through holes are formed in the insulating layer, and the disconnected first sub-electrode is connected with the conductive bridges through the through holes.

In another embodiment of the first aspect of the present disclosure, the touch functional layer further includes an insulating layer. The first electrode and the second electrode are located in different layers, and the insulating layer is located between the first electrode and the second electrode. In each first type touch unit, the first electrode and the second electrode are in different layers, in each first type touch unit, the first sub-electrode comprises a plurality of first electrode blocks and first connecting parts which are alternately connected, the second sub-electrode comprises a plurality of second electrode blocks and second connecting parts which are alternately connected, and the first connecting parts and the second connecting parts are intersected to form an intersection point.

A second aspect of the present disclosure provides a touch display device, including a display panel and the touch panel in the first aspect. The touch panel is positioned on the display side of the display panel. For example, the display panel includes a display area, and the orthographic projection of the touch function area of the touch panel on the display panel coincides with the display area.

A third aspect of the present disclosure provides a touch template including a touch functional area. The touch template further comprises a touch functional layer, a plurality of first signal lines and a plurality of second signal lines. The touch control functional layer is located the touch control functional area, the touch control functional layer includes a plurality of first electrodes and a plurality of second electrodes of arranging side by side, every first electrode of a plurality of first electrodes and every second electrode of a plurality of second electrodes cross each other and form a plurality of touch control units, at least one of a plurality of touch control units sets up to first type touch control unit, the part that lies in every first type touch control unit of first electrode includes two at least parallelly connected first sub-electrodes, the part that lies in every first type touch control unit of second electrode includes two at least parallelly connected second sub-electrodes, first sub-electrode and second sub-electrode are crisscrossed each other. The first signal lines are connected with the first electrodes in a one-to-one correspondence. The plurality of second signal lines are connected with the second electrodes in a one-to-one correspondence manner, and the first signal lines and the second signal lines are positioned on different sides of the touch control functional area. The at least one first signal line and the at least one second signal line are connected with the first type touch unit, the first signal line connected with the first type touch unit comprises at least two first sub-signal lines correspondingly connected with the first sub-electrodes, and the second signal line connected with the first type touch unit comprises at least two second sub-signal lines correspondingly connected with the second sub-electrodes.

Drawings

Fig. 1 is a schematic plan view of a touch template according to an embodiment of the disclosure;

FIG. 2A is an enlarged view of the S1 area of the touch template shown in FIG. 1;

FIG. 2B is an enlarged view of the S1 area of the touch template of FIG. 1;

FIG. 2C is an enlarged view of the S1 area of the touch template of FIG. 1;

FIG. 3 is a schematic diagram illustrating the touch panel of FIG. 1 in R-angle design;

FIG. 4 is a schematic plan view of the touch panel of FIG. 1 after the touch panel is designed to have an R angle;

fig. 5 is an enlarged view of an S2 region of the touch panel shown in fig. 4;

FIG. 6 is a diagram illustrating an R-angle design of a touch panel;

FIG. 7 is a schematic view of a portion of the touch panel of FIG. 6 after the touch panel is designed to have an R angle;

FIG. 8 is a cross-sectional view of the touch panel shown in FIG. 2A along A1-B1;

FIG. 9 is a cross-sectional view of the touch panel shown in FIG. 2A along A2-B2;

FIG. 10 is a schematic plan view of a frame area of the touch panel shown in FIG. 2A; and

fig. 11 is a sectional view of a partial area of another touch panel according to an embodiment of the disclosure.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In practical applications of touch panels, the requirement for shape change may be met, and the requirement may require touch panels of different shapes. For example, when the touch panel is applied to a display device having an under-screen camera, holes need to be punched in an image pickup area where touch electrodes in the touch panel need to be removed and signal lines need to be redesigned to avoid blocking of light from the image pickup area by the signal lines. For example, when the touch panel is applied to a display panel having an R angle, the touch panel also needs to design the R angle, that is, at the R angle of the touch panel, a portion of the touch electrodes need to be removed, and the corresponding signal lines need to be redesigned to ensure connection between the touch electrodes and the signal lines.

In view of the above-mentioned different demands for the shape of the touch panel, if the shape of the touch electrode and the arrangement of the signal lines of the entire touch panel are redesigned for each shape, the cost in terms of equipment, design, process, etc. is increased, which is not beneficial to mass production. In the actual production process of a touch panel, a touch template is generally designed, the pattern of a touch electrode and the arrangement mode of signal lines in the touch template are fixed, when a touch panel with a specific shape (such as a special-shaped design, a special-shaped shape can be an R angle or the like) is required, the shape of the touch panel is compared with the shape of the touch template, and the special-shaped design is only performed in a region of the touch template, which is different from the shape of the touch panel, so that the touch panel is obtained, for example, the pattern of part of the touch electrode and the pattern of the signal lines in the region where the touch template and the touch panel overlap are completely reserved, the part of the touch electrode in the non-overlapping region is removed, and then the signal lines are redesigned to be connected with the rest of the touch electrodes. Therefore, the local area of the same touch template is redesigned, so that touch panels with various shapes can be obtained, and the cost is favorably controlled. However, in the above-described process, if the area of the first type touch unit of the special-shaped design area to be removed is too large (approximately half), it is easy to cause the signal lines to cross each other at the time of layout, thereby generating parasitic capacitance, resulting in poor touch functions, such as low sensitivity.

The disclosure provides a touch panel and a touch display device, which can solve the technical problems. The touch panel is formed by dividing a touch template along a cutting line, and the touch template comprises a touch functional area. The touch template further comprises a touch functional layer. The touch control functional layer is located the touch control functional area, the touch control functional layer includes a plurality of first electrodes and a plurality of second electrodes of arranging side by side, every first electrode of a plurality of first electrodes and every second electrode of a plurality of second electrodes cross each other and form a plurality of touch control units, at least one of a plurality of touch control units sets up to first type touch control unit, the part that lies in every first type touch control unit of first electrode includes two at least parallelly connected first sub-electrodes, the part that lies in every first type touch control unit of second electrode includes two at least parallelly connected second sub-electrodes, first sub-electrode and second sub-electrode are crisscrossed each other. The cutting line passes through the first type of touch units, and the rest part of the first type of touch units divided by the cutting line is the second type of touch units in the touch panel.

For example, the touch template further includes a plurality of first signal lines and a plurality of second signal lines. The first signal lines are connected with the first electrodes in a one-to-one correspondence manner, the second signal lines are connected with the second electrodes in a one-to-one correspondence manner, and the first signal lines and the second signal lines are located on different sides of the touch control functional area. The at least one first signal line and the at least one second signal line are connected with the first type touch unit, the first signal line connected with the first type touch unit comprises at least two first sub-signal lines correspondingly connected with the first sub-electrodes, and the second signal line connected with the first type touch unit comprises at least two second sub-signal lines correspondingly connected with the second sub-electrodes.

The first electrode and the second electrode form at least four cross points in each first type touch unit, so that electric fields in the first type touch units are distributed more uniformly, and when the touch panel is specially-shaped and the first type touch units need to be cut, the first type touch units can allow a larger cutting area while at least one cross point exists, and therefore limit (such as size limit) on specially-shaped design is reduced; in addition, the sub-electrodes (the first sub-electrode and the second sub-electrode) of the first electrode and the second electrode are respectively connected with the sub-signal lines (the first sub-signal line and the second sub-signal line) of the signal lines (the first signal line and the second signal line), under the condition of at least one intersection point, the arrangement mode of the sub-signal lines is not required to be changed, so that the touch capacitance can still be formed in the second type touch unit, and parasitic capacitance can not be formed between the sub-signal lines connected with the second type touch unit due to the intersection, thereby ensuring the sensitivity of the touch function.

For example, in the touch panel provided in at least one embodiment of the present disclosure, the touch functional area includes a first area and a second area that remain after the touch template is divided along the cutting line, and the area where the second type of touch unit is located is the second area. The second type of touch control unit comprises a third sub-electrode formed by dividing the first sub-electrode by a cutting line and a fourth sub-electrode formed by dividing the second sub-electrode by the cutting line. The number of crossing points between the third sub-electrode and the fourth sub-electrode in the second type touch unit is not less than 1.

Hereinafter, a touch panel and a touch display device according to at least one embodiment of the present disclosure will be described with reference to the accompanying drawings. In addition, as shown in the drawings, in at least one embodiment of the present disclosure, a space rectangular coordinate system is established with a surface where the touch panel is located as a reference, so as to define positions of each element in the touch panel and even the touch display device. In the rectangular space coordinate system, the X axis and the Y axis are parallel to the surface of the touch panel, and the Z axis is perpendicular to the surface of the touch panel.

It should be noted that, in the embodiment of the disclosure, the touch panel is obtained by dividing the touch display panel by the cutting lines, so when describing the structure of the touch display panel, the structural design of the touch panel can be deduced according to the positions of the cutting lines, that is, the structure of the touch panel is described. For example, by describing the structure of the first sub-electrode in the touch display panel, the structure of the third electrode may be deduced according to the position of the cutting line.

As shown in fig. 1 and 2A, the touch template 10 includes a touch functional area 11 and a frame area 12 surrounding the touch functional area 11, a touch functional layer 100 is disposed in the touch functional area 11, the touch functional layer 100 includes a plurality of first electrodes 110 and a plurality of second electrodes 120 that are arranged in a crossing manner, and a touch unit is formed at the crossing position of each first electrode 110 and each second electrode 120. At least one touch unit is a first type of touch unit 101. The portion of the first electrode 110 located in the first type of touch unit 101 includes two parallel first sub-electrodes 111, 112, and the portion of the second electrode 120 located in the first type of touch unit 101 includes two parallel second sub-electrodes 121, 122, and each of the first sub-electrodes 111, 112 crosses each of the second sub-electrodes 121, 122, so that in each first type of touch unit 101, there are four crossing points. The frame area 12 of the touch template is provided with a plurality of first signal lines 200 connected with the first electrodes 110 in a one-to-one correspondence manner and a plurality of second signal lines 300 connected with the second electrodes 120 in a one-to-one correspondence manner. The first signal line 200 includes two first sub-signal lines 211, 212, the first sub-signal lines 211, 212 are correspondingly connected to the corresponding first sub-electrodes 111, 112, for example, the first sub-signal line 211 is connected to the first sub-electrode 111, and the first sub-signal line 212 is connected to the first sub-electrode 112. The second signal line 300 includes two second sub-signal lines 311, 312, and the second sub-signal lines 311, 312 are connected to the second sub-electrodes 121, 122, respectively, that is, the second sub-signal line 311 is connected to the second sub-electrode 121, and the second sub-signal line 312 is connected to the second sub-electrode 122. The first signal line 200 and the second signal line 300 are located at different sides of the touch functional area 11. The first signal line 200 and the second signal line 300 are disposed in different regions to avoid signal interference.

As shown in fig. 2A, 3 and 5, the touch panel shown in fig. 5 is formed by cutting the touch panel 10 in fig. 2A by the cutting line P1 shown in fig. 3, and the first type of touch unit 101 cut by the cutting line P1 in the touch panel 10 forms the second type of touch unit 102 shown in fig. 5. After the first type touch unit 101 is cut, the first sub-electrodes 111 and 112 are divided by the cutting line P1 to form a third sub-electrode 141, and the second sub-electrodes 121 and 122 are divided by the cutting line P1 to form a fourth sub-electrode 142. The area where the touch units not divided by the cutting line P1 are located in the touch template forms a first area of the touch panel, and the area where the second type of touch units 102 are located is a second area of the touch panel.

The area of the special-shaped design of the touch panel can be determined according to actual needs, so in the touch template, all the touch units can be designed as the first type of touch units to cope with the requirements of various special-shaped designs, or the touch units can be designed as the first type of touch units only in the area where special-shaped design is possible.

For example, in some embodiments of the present disclosure, the touch units of the touch template are all set as the first type of touch units. In this way, uniformity of electric field distribution of the whole touch functional area of the touch panel is improved, that is, accuracy and sensitivity of touch detection of the whole touch functional area are improved, in addition, any area of the touch panel is allowed to be specially designed, and risk that signal lines with specially designed areas cross is reduced. Illustratively, as shown in fig. 2A, the touch units of the touch template are all set as the first type of touch units 101. Accordingly, the touch units of the touch panel formed by the touch templates are of a first type and a second type.

For example, in other embodiments of the present disclosure, the touch units of the touch template are divided into a first type of touch unit and a third type of touch unit, and portions of the first electrode and the second electrode in each third type of touch unit form an intersection. In this way, the structural complexity of the whole touch panel can be reduced, which is equivalent to the reduction of the design difficulty and the simplification of the manufacturing process of the touch panel, in addition, the special-shaped design is carried out on the specific area of the touch panel, and the signal wires in the third type of touch units do not need to be provided with sub-signal wires, so that the wiring quantity of the signal wires can be reduced, and the frame extremely narrow design of the touch panel is facilitated. As shown in fig. 2B, the touch units located at the edge positions of the touch template are all set as the first type of touch units 101, and the touch units in other areas are designed as the third type of touch units; alternatively, as shown in fig. 2C, only at the position where the cutting line is designed, the touch units through which the cutting line passes are set as the first type of touch units 101, while other touch units are designed as the third type of touch units, for example, the touch panel shown in fig. 2C may be used to set the touch panel with R angle, the touch units at the angular position of the touch panel are set as the first type of touch units, and other touch units are designed as the third type of touch units. Accordingly, the types of the touch units of the touch panel formed by the touch template comprise a second type of touch units and a third type of touch units, or comprise a first type of touch units, a second type of touch units and a third type of touch units.

In an embodiment of the present disclosure, one of the first electrode and the second electrode is a driving electrode, and the other of the first electrode and the second electrode is a sensing electrode. In the actual working process, scanning signals can be respectively applied to the driving electrode and the sensing electrode through the signal lines (the first signal line and the second signal line) so that the touch capacitance is charged to have a capacitance value, and when an external object (such as a finger) approaches the touch capacitance, the driving electrode and/or the sensing electrode and the external object form a new capacitance (parasitic capacitance), which can cause voltage floating of the touch capacitance, so that the capacitance value of the touch capacitance is changed. Therefore, the position of an external object can be positioned by detecting the position of the touch capacitor with the changed capacitance value, so that the touch function is realized.

In the touch panel provided in at least one embodiment of the present disclosure, each first electrode defines a first channel, each second electrode defines a second channel, and an overlapping area of the first channel and the second channel is an area where the touch unit is located. Illustratively, as shown in fig. 2A, 3 first electrodes 110 and 3 second electrodes 120 are shown, 3 first electrodes 110 respectively defining 3 first channels (e.g., first channels N1, N2), and 3 second electrodes 120 respectively defining 3 second channels (e.g., second channels M1, M2). The overlapping area (which may also be referred to as a crossover area or a common area) of the first channel N1 and the second channel M1 determines the touch units (the first type of touch units 101 in fig. 2A) as within a dashed box.

In the embodiment of the present disclosure, when signals are applied to the first electrode and the second electrode (or the third sub-electrode and the fourth sub-electrode after dicing, division), the application of signals is performed in units of channels, that is, when a driving signal is applied to one electrode at a time, the signals to which a plurality of sub-electrodes in the electrode are applied are the same, and the signals to which a plurality of sub-signal lines in the corresponding signal lines are applied are also the same, for example, the voltage and the time at which the voltage is applied are the same. For example, when a driving signal is applied to one first electrode (or a third sub-electrode in a touch panel) at a time, signals to which a plurality of sub-electrodes in the first electrode are applied are the same, and signals to which a plurality of first sub-signal lines in the corresponding first signal lines are applied are also the same.

In the touch panel provided in at least one embodiment of the present disclosure, each first signal line includes a first main signal line, and each first signal line includes a first sub-signal line having one end connected to the first main signal line and the other end connected to the first sub-electrode; each of the second signal lines includes a second main signal line, and each of the second signal lines includes a second sub-signal line having one end connected to the second main signal line and the other end connected to the second sub-electrode. Illustratively, as shown in FIG. 2A, the first signal line 200 includes a first main signal line 220, with the first sub-signal lines 211, 212 connected to the first main signal line 220; the second signal line 300 includes a second main signal line 320, and the second sub signal lines 311, 312 are connected to the second main signal line 320. In the touch detection process, one scan signal may be applied to the first main signal lines 220 and another scan signal may be applied to the second main signal lines 320, so that a touch capacitance is formed in the touch unit.

In the embodiment of the present disclosure, the type of the special-shaped design of the touch panel is not limited, and the special-shaped design may include an opening, an R angle, and the like. In the following, taking the special-shaped design as an R angle as an example, a principle of how the touch panel and the touch display device provided in at least one embodiment of the present disclosure are beneficial to the special-shaped design will be described.

In the touch panel provided by at least one embodiment of the present disclosure, the touch functional area includes a first area and a second area, in each first type touch unit, each first electrode includes M first sub-electrodes, each second electrode includes N second sub-electrodes, M and N are positive integers not less than 2, the number of intersecting points in the first type touch unit is m×n, the number of intersecting points of a third sub-electrode and a fourth sub-electrode in the second type touch unit is V, and V is 1-V-m×n. Compared with the first type of touch units, the number of the cross points of the second type of touch units is allowed to be reduced, so that the second area of the touch panel is allowed to be specially designed, and the cross points among the signal lines are not caused.

For example, 1.ltoreq.V < M.times.N. Thus, the number of the cross points of the second area is smaller than that of the cross points of the first area, and the second area of the touch panel can be specially designed relative to the first area, and in the process, the number of the cross points in the second type touch units in the second area is reduced.

In the touch panel provided in at least one embodiment of the present disclosure, the touch panel further includes at least one third signal line and at least one fourth signal line. The third signal line is connected with the second type of touch control unit and comprises third sub-signal lines which are connected with the third sub-electrodes in a one-to-one correspondence manner. The fourth signal wire is connected with the second type touch control unit and comprises fourth sub-signal wires which are connected with the fourth sub-electrodes in a one-to-one correspondence manner. On the surface of the touch substrate, the orthographic projection of the third signal line and the orthographic projection of the fourth signal line are spaced from each other. For example, the third signal line is divided by the first signal line through a dicing line, and the fourth signal line is divided by the second signal line through a dicing line. In the process of dividing the first type of touch units by the cutting lines to obtain the second type of touch units, the first sub-signal lines of the first signal lines and the second sub-signal lines of the second signal lines connected with the first type of touch units may be divided by the cutting lines at the same time to disconnect the connection with the corresponding first sub-electrodes (the third sub-electrodes after division) and the second sub-electrodes (the fourth sub-electrodes after division), so that the first sub-signal lines and the second sub-signal lines after division by the cutting lines need to be extended to be connected with the first sub-electrodes (the third sub-electrodes) and the second sub-electrodes (the fourth sub-electrodes) after division, and in the extending process of the first sub-signal lines and the second sub-signal lines, the cross between the first sub-signal lines and the second sub-signal lines does not occur, that is, the cross between the third sub-signal lines and the fourth sub-signal lines does not occur. In the above process, the first sub signal line is extended to form a third sub signal line, and accordingly, the first signal line is formed to the third signal line, and the second sub signal line is formed to the fourth sub signal line, and accordingly, the second signal line is formed to the fourth signal line.

For the third sub-signal line and the fourth sub-signal line connected with the same second type touch unit of the second area, the orthographic projection of the third sub-signal line on the surface of the touch panel and the orthographic projection of the fourth sub-signal line on the surface of the touch panel are mutually spaced. In this way, there is no crossing of the third sub-signal line and the fourth sub-signal line connected to the second type touch unit of the second area (the special-shaped design area), that is, there is no crossing of the third sub-signal line and the fourth sub-signal line connected to the second type touch unit of the second area, so that there is no parasitic capacitance problem caused by the crossing of the signal lines.

As illustrated in fig. 1 to 5, the second region may be: and removing the area occupied by the touch unit which is not passed by the cutting line from the overlapped area of the area L1 and the area L2, and then removing the remaining area. The area L1 includes an area where the first channels N1, N2 are located, and the area L2 includes an area where the second channels M1, M2 are located. The corner of the touch pad 10 in fig. 1 is designed as an R-corner to form a touch panel 10a as shown in fig. 4, i.e., the second region is specially designed to have an R-corner. In this process, as shown in fig. 3, it is necessary to divide the corner of the touch template 10 along the cutting line P1, that is, to remove the portion from the corner to the cutting line P1, thereby obtaining the R-angle as shown in fig. 5. As shown in fig. 3 and 5, more than half of the area of the first type touch unit 101 in fig. 3 is divided along the cutting line P1, and the first type touch unit 101 is cut to form a second type touch unit 102 with an R angle. In the above process, the first signal line 200 and the second signal line 300 connected to the first type touch unit 101 divided by the cutting line P1 need to be extended to be connected to the second type touch unit 102, and the third signal line 200a and the fourth signal line 300a are formed after the first signal line 200 and the second signal line 300 are extended. The third signal line 200a includes third sub-signal lines 211a, 212a connected to the third sub-electrode 141 of the second type touch unit 102, the fourth signal line 300a includes fourth sub-signal lines 311a, 312a connected to the fourth sub-electrode 142, and there is no crossing of the third sub-signal lines 211a, 212a and the fourth sub-signal lines 311a, 312a, i.e., there is no crossing of the third signal line 200a and the fourth signal line 300a.

It should be noted that, in the embodiment of the present disclosure, in the case that the number of the first sub-electrodes included in the portion of the first electrode located in the first type touch unit is not less than 2, and the number of the second sub-electrodes included in the portion of the second electrode located in the first type touch unit is not less than 2, the number of the first sub-electrodes and the number of the second sub-electrodes in the first type touch unit are not limited, and accordingly, for the touch template, the number of the first sub-signal lines included in the first signal lines and the number of the second sub-signal lines included in the second signal lines are not limited. In each first type of touch unit, the number of the cross points is equal to the product of the number of the first sub-electrodes and the number of the second sub-electrodes. Illustratively, each first electrode includes 3 first sub-electrodes, each second electrode includes 3 second sub-electrodes, and the number of cross points in each first type touch unit is 9. In this way, the greater the number of the first sub-electrodes and the number of the second sub-electrodes in each first type touch unit, the greater the number of the intersecting points, and in the case of performing the special-shaped design, in the second area (special-shaped design area), the first type touch unit may be allowed to divide more areas while at least one intersecting point is maintained, the second type touch unit is formed in the first type touch unit, and the intersecting point does not exist in the first sub-signal line and the second sub-signal line connected to the second type touch unit, that is, the intersecting point does not exist in the first signal line and the second signal line connected to the second type touch unit. For example, in the case that 9 cross points exist in each first type of touch unit, after the special-shaped design is performed, the area of the second type of touch unit may be changed to 10% -20% of the area of the first type of touch unit, and still one cross point may be included, so that the first sub-signal line and the second sub-signal line connected with the second type of touch unit still do not cross.

In the touch panel provided by at least one embodiment of the present disclosure, a ratio of an area of the second type of touch unit to an area of the first type of touch unit is not less than 1/(m×n) and less than 1-1/(m×n). For example, the ratio of the area of the second type of touch unit to the area of the first type of touch unit is less than 1/2, and 2V < m×n. Therefore, compared with the first type of touch control unit, the area of the second type of touch control unit can be reduced by more than half, and the signal lines can still not cross.

As shown in fig. 1, 2A and 3 to 5, the second type touch unit 102 in fig. 5 is divided by the first type touch unit 101 in fig. 2A along the cutting line P1 in fig. 3, and then a portion of the first type touch unit 101 that is bounded by the cutting line P1 and faces the corner of the touch panel is removed, and the remaining portion of the first type touch unit 101 is the second type touch unit 102. In addition, as shown in fig. 1, 2A and 3 to 5, the portion of each first electrode located in the first type touch unit 101 includes 2 first sub-electrodes, each first signal line includes 2 first sub-signal lines, the portion of each second electrode located in the first type touch unit 101 includes 2 second sub-electrodes, each second signal line includes 2 second sub-signal lines, that is, m=2 and n=2, after the touch panel in fig. 2A is shaped (has R angle), as shown in fig. 5, the ratio of the area of the second type touch unit 102 to the area of the first type touch unit 101 is less than 1/2, that is, the middle portion of the first type touch unit 101 has been divided and removed by the cutting line P1, in which case, the crossing point of the third sub-electrode and the fourth sub-electrode still exists in the second type touch unit 102. In addition, as shown in fig. 1 to 5, the second type touch unit 102 having the R angle is preformed, if the cutting line P1 passes through the intersection point of the first type touch unit 101 which is farthest from the preformed R angle, the area ratio of the second type touch unit 102 to the first type touch unit 101 may be about 1/4, and thus, as long as the position of the cutting line P1 is such that the area ratio is slightly greater than 1/4, for example, 30%, the intersection point may be maintained in the second type touch unit 102, so that the first sub-signal and the second sub-signal connected to the second type touch unit 102 may not cross each other.

It should be noted that, in the actual process, the radius of R angle is generally greater than the size (e.g. length, width) of a single first type touch unit, i.e. the ratio of the areas of the second type touch unit 102 and the first type touch unit 101 reaches 1/4, and for the first type touch unit as shown in fig. 3, the cutting line P1 does not pass through the intersection point of the first type touch unit farthest from the corner of the touch function area, i.e. the second type touch unit 102 with R angle as shown in fig. 5 still includes one intersection point, i.e. in the embodiment of the present disclosure, even if four intersection points are initially designed in the first type touch unit, after the first type touch unit is designed as the second type touch unit with R angle, the area of the second type touch unit with R angle may become 1/4 of the area of the first type touch unit.

In the following, a touch panel of conventional design is taken as an example, and compared with the touch panel of the present disclosure, so as to more intuitively embody the principle of the technical problem solved by the technical scheme of the present disclosure. In the touch panel of the conventional design, only one cross point exists in the touch units included in the touch panel, and the touch units can be regarded as the third type of touch units.

As illustrated in fig. 6 and 7, the touch panel of fig. 6 includes a plurality of first electrodes 110b and a plurality of second electrodes 120b, and the first electrodes 110b and the second electrodes 120b cross to form a touch unit 103b. In each touch unit 103b, there is only one intersection. The intersection point is typically located at the center (e.g., centroid) of the touch unit 103b. As shown in fig. 6, the touch panel is divided according to the cutting line P2 to obtain the touch panel with R-angle shown in fig. 7, the touch unit 103b is divided by the cutting line P2 to form the touch unit 102c, the cutting line P2 crosses the crossing point of the first electrode 110b and the second electrode 120b, and the ratio of the areas of the touch unit 102c and the touch unit 103b is less than 1/2 (e.g. less than 45%), that is, in the touch unit 102c, there is no crossing point of the first electrode and the second electrode. As such, the first signal line 200b and the second signal line 300b connected to the touch unit 103b in fig. 6 need to be extended to form the first signal line 200c and the second signal line 300c as shown in fig. 7 to continue to be connected to the first electrode and the second electrode, and during this extension, the first signal line 200c and the second signal line 300c may cross, which may be seen in particular as region S3 in fig. 7. In this way, the first signal line 200c and the second signal line 300c form parasitic capacitance in the S3 region, thereby interfering with the touch function of the touch panel.

In the touch panel provided in some embodiments of the present disclosure, the touch functional layer further includes an insulating layer. The first electrode and the second electrode are formed by the same layer and the same material, the insulating layer covers the first electrode and the second electrode, the touch functional layer further comprises a plurality of conductive bridges positioned on one side of the insulating layer, which is away from the first electrode, the conductive bridges are positioned at the crossing points of the first sub-electrode and the second sub-electrode, the first sub-electrode is disconnected at the crossing points of the first sub-electrode and the second sub-electrode, through holes are formed in the insulating layer, and the disconnected first sub-electrode is connected with the conductive bridges through the through holes. As shown in fig. 2 and 8, the touch functional layer includes a first electrode 110 and a second electrode 120 disposed on a substrate 400, and the first electrode 110 and the second electrode 120 are formed in the same layer and the same material, i.e., the first electrode 110 and the second electrode 120 are formed from the same conductive film layer in the same patterning process. The first electrode 110 includes first sub-electrodes 111, 112, the second electrode 120 includes second sub-electrodes 121, 122, the first sub-electrode 112 is disconnected at a crossing with the second sub-electrode 121, and the disconnected first sub-electrode 112 is connected by a conductive bridge 130. An insulating layer 500 is provided between the conductive bridge 130 and the layer where the first electrode 110 and the second electrode 120 are located. The insulating layer 500 is provided with a via hole, through which the conductive bridge 130 is connected to the first sub-electrode 112.

In other embodiments of the present disclosure, the touch functional layer further includes an insulating layer. The first electrode and the second electrode are located in different layers, and the insulating layer is located between the first electrode and the second electrode. In each first type touch unit, the first electrode and the second electrode are in different layers, in each first type touch unit, the first sub-electrode comprises a plurality of first electrode blocks and first connecting parts which are alternately connected, the second sub-electrode comprises a plurality of second electrode blocks and second connecting parts which are alternately connected, and the first connecting parts and the second connecting parts are intersected to form an intersection point. As shown in fig. 8, the first electrode 110 may be modified to be moved to a layer where the conductive bridge 130 is located, that is, the insulating layer 500 is located between the first electrode 110 and the second electrode 120, and then the first conductive bridge 200 is incorporated into a structure of the first electrode 110, in which case the first conductive bridge 200 serves as the first connection portion described above. In addition, the structure shown in fig. 11 may be modified similarly to the above, and will not be described here.

In the embodiment of the disclosure, the first signal line and the second signal line may be formed in the same process with the conductive structure (including the first electrode, the second electrode, the conductive bridge, etc.) in the touch functional layer, so that the manufacturing process flow of the touch panel may be simplified, and the cost may be reduced.

In the embodiment of the present disclosure, the first signal line and the second signal line may have a single-layer structure, or may have a double-layer or multi-layer structure.

For example, in some embodiments of the present disclosure, the first signal line and the second signal line may be a single-layer structure, and the first signal line and the second signal line may be formed in the same layer and material as the first electrode and the second electrode. For example, in the actual process, the first signal line and the second signal line are respectively integrated with the corresponding first electrode and second electrode, so that a switching structure (connection between two structures for different layers) is not required.

For example, in other embodiments of the present disclosure, the first signal line and the second signal line may have a double-layer structure. One layer of the double-layer structure can be formed with the first electrode and the second electrode in the same layer and the same material, and the other layer of the double-layer structure can be formed with the conductive bridge in the same layer and the same material. The double-layer structure can be formed into a parallel structure, so that the self resistance is reduced, and the power consumption is reduced.

Next, the structures of the touch panel and the touch display device in at least one embodiment of the present disclosure will be described by taking a two-layer structure as an example of the first signal line and the second signal line.

In the touch panel provided in at least one embodiment of the present disclosure, each first signal line includes a first upper signal line and a first lower signal line connected in parallel, at least part of the first upper signal line and the first lower signal line together forming a first main signal line; and/or, each second signal line comprises a second upper signal line and a second lower signal line which are connected in parallel, and at least part of the second upper signal line and the second lower signal line jointly form a second main signal line. For example, further, the first upper signal line and the first lower signal line together constitute a first main signal line and a first sub signal line. For example, further, the second upper signal line and the second lower signal line together constitute a second main signal line and a second sub signal line. In this way, the first main signal line of the first signal line and/or the second main signal line of the second signal line are composed of the upper and lower signal lines (the first upper signal line and the first lower signal line, or the second upper signal line and the second lower signal line) connected in parallel, so that the resistance of the first signal line and/or the second signal line can be reduced, and the power consumption can be reduced.

As illustrated in fig. 8 to 10, the first signal line 200 is a two-layered structure including a first upper signal line including a first upper branch portion 2112 constituting the first sub-signal line 211 and a first upper main portion 222 constituting the first main signal line 220, and a first lower signal line including a first lower branch portion 2111 constituting the first sub-signal line 211 and a first lower main portion 221 constituting the first main signal line 220. An insulating layer 500 is arranged between the first upper signal line and the first lower signal line, a through hole is arranged in the insulating layer 500, and the first upper signal line and the first lower signal line are connected in parallel through the through hole in the insulating layer 500, so that the resistance of the first signal line is reduced. The second signal line and the arrangement manner of the second upper signal line and the second lower signal line included therein may refer to the first signal line 200 and the arrangement manner of the first upper signal line and the first lower signal line included therein, which are not described herein.

As shown in fig. 9 and 10, a connection point 223 is provided between the first upper signal line (the first upper main portion 222 included therein is shown) and the first lower signal line (the first lower main portion 221 included therein is shown), and a via hole of the insulating layer 500 is provided at the connection point 223 so that the first upper signal line and the first lower signal line are implemented in parallel.

For example, in the frame region on one side of the touch function region of the touch panel, a plurality of first signal lines 200 (for example, 7 lines corresponding to L1 to L7 lines in the drawing) are arranged in parallel. A plurality of sets of connection points 223 are provided in the plurality of first signal lines 200. Each set of connection points 223 includes connection points 223 in one-to-one correspondence with the plurality of first signal lines 200.

It should be noted that, in some embodiments of the present disclosure, each set of connection points may be connected as a straight line, so as to reduce design difficulty; alternatively, in other embodiments of the present disclosure, each set of connection points may be arranged in a random distribution, i.e., each set of connection points may not all lie in a straight line, thereby reducing optical phenomena (e.g., diffraction, interference, etc.) caused by the regular distribution of connection points, reducing the risk of connection points being visually visible.

In some embodiments of the present disclosure, the conductive bridge may be located below the layer where the first electrode and the second electrode are located, or may be disposed above the layer where the first electrode and the second electrode are located. Thus, the first upper signal line and the second upper signal line are arranged on the same layer and formed by the same material as one of the conductive bridge and the first electrode, which is positioned on the upper layer; the first lower signal line and the second lower signal line are formed of the same material and are formed in the same layer as one of the conductive bridge and the first electrode which is located under the first electrode.

It should be noted that, in the embodiment of the present disclosure, a position closer to the side to be touched of the touch panel is "up", and a position closer to the non-touch side away from the side to be touched of the touch panel is "down". For example, in the case where the substrate is provided, if the first electrode and the second electrode are located between the conductive bridge and the substrate, the first electrode and the second electrode are located below the conductive bridge, and the conductive bridge is also located above the first electrode and the second electrode, whereas the first electrode and the second electrode are located above the conductive bridge, and the conductive bridge is also located below the first electrode and the second electrode.

Next, the structure of the touch panel will be described in several specific embodiments based on two positional relationships between the conductive bridge and the layers where the first electrode and the second electrode are located.

In some embodiments of the present disclosure, as shown in fig. 8, the first electrode 110 and the second electrode 120 are positioned between the substrate 400 and the conductive bridge 130. As such, the first upper signal line (the first upper main portion 222 and the first upper branch portion 2112 included therein are shown) and the conductive bridge 130 are formed in the same layer and in the same material, and the first lower signal line (the first lower main portion 221 and the first lower branch portion 2111 included therein are shown), the first electrode 110 and the second electrode 120 are formed in the same layer and in the same material. In addition, the second upper signal line (not shown) and the conductive bridge 130 are formed in the same layer and the same material, and the second lower signal line (not shown), the first electrode 110, and the second electrode 120 are formed in the same layer and the same material. In addition, the first lower signal line and the first electrode are directly connected (or integrally formed), and the second lower signal line and the second electrode are directly connected (or integrally formed).

For example, in an actual process, a conductive material film layer may be deposited on the substrate 400, and a patterning process may be performed on the conductive material film layer to form the first electrode 110, the second electrode 120, the first lower signal line, and the second lower signal line, and the first electrode 110 are directly connected, and the second lower signal line is directly connected with the second electrode 120. An insulating material is then deposited on the substrate 400 to form an insulating layer 500. Then, a patterning process is performed on the insulating layer 500 to form a plurality of through holes, some of which expose the first electrode 110 and others of which expose the first and second lower signal lines. Then, another conductive material film layer is deposited on the insulating layer 500, and is contacted with the first electrode 110, the first lower signal line, and the second lower signal line through the via hole, and is subjected to a patterning process to form the conductive bridge 130, the first upper signal line, and the second upper signal line. Thus, the conductive bridge 130 is connected to the first electrode 110, the first upper signal line is connected to the first lower signal line, and the second upper signal line is connected to the second lower signal line.

In other embodiments of the present disclosure, as shown in fig. 11, a conductive bridge 130d is located between the substrate 400d and the layer of the first electrode 110d (which is shown to include the first sub-electrode 112 d) and the second electrode 120d (which is shown to include the second sub-electrodes 121d, 122 d). As such, the first upper signal line (which is illustrated as including the first upper main portion 222d and the first upper branch portion 2112 d), the first electrode 110d and the second electrode 120d are formed of the same layer and the same material, and the conductive bridge 130d and the first lower signal line (which is illustrated as including the first lower main portion 221d and the first lower branch portion 2111 d) are formed of the same layer and the same material. In addition, the second lower signal line (not shown) and the conductive bridge 130d are formed in the same layer and the same material, and the second upper signal line (not shown), the first electrode 110d and the second electrode 120d are formed in the same layer and the same material. The first upper signal line and the first electrode 110d are directly connected (or integrally formed), and the second upper signal line and the second electrode 120d are directly connected (or integrally formed).

For example, in an actual process, a conductive material film layer may be deposited on the substrate 400d and subjected to a patterning process to form the conductive bridge 130d, the first lower signal line, and the second lower signal line. An insulating material is then deposited on the substrate 400d to form an insulating layer 500d. Then, the insulating layer 500d is subjected to a patterning process to form a plurality of via holes, some of which expose the conductive bridge 130d and others of which expose the first and second lower signal lines. Then, another conductive material film layer is deposited on the insulating layer 500d, the another conductive material film layer is in contact with the conductive bridge 130d, the first lower signal line, and the second lower signal line through the via hole, and a patterning process is performed on the another conductive material film layer to form the first electrode 110d, the second electrode 120d, the first upper signal line, and the second upper signal line, the first upper signal line and the first electrode 110d being directly connected, and the second upper signal line and the second electrode 120d being directly connected. Thus, the conductive bridge 130d is connected to the first electrode 110d, the first upper signal line is connected to the first lower signal line, and the second upper signal line is connected to the second lower signal line. The first upper signal line includes a first upper branch portion 2112d constituting the first sub signal line 211d and a first upper main portion 222d constituting the first main signal line 220d, and the first lower signal line includes a first lower branch portion 2111d constituting the first sub signal line 211d and a first lower main portion 221d constituting the first main signal line 220 d.

In an embodiment of the present disclosure, the first electrode and the second electrode of the touch functional layer may be disposed in a mesh-like structure so that the touch panel has good light transmittance. For example, further, the conductive bridges may also be arranged in a grid-like structure.

At least one embodiment of the present disclosure provides a touch display device, including a display panel and the touch panel in the first aspect. The touch panel is positioned on the display side of the display panel, the display panel comprises a display area, and the orthographic projection of the touch functional area of the touch panel on the display panel coincides with the display area.

For example, in at least one embodiment of the present disclosure, the display panel may serve as a substrate carrying a touch functional layer of the touch panel. For example, the touch panel may be a TOE (Touch on Encapsulation) touch panel, that is, the touch functional layer (the conductive bridge, the first electrode, and the second electrode) in the TOE touch panel is directly formed on the packaging layer of the display panel, so that compared with the attaching mode, the manufacturing process flow of the whole touch panel is simplified, and the light and thin design of the touch panel is facilitated.

For example, in a touch display device provided in some embodiments of the present disclosure, a display panel includes a display area and a plurality of pixels located in the display area, each pixel including a plurality of sub-pixels and a space region located between the sub-pixels. For example, in the case where the first electrode, the second electrode, and the conductive bridge are provided in a grid structure, an orthographic projection of grid lines of the grid structure on the display panel is located within the space region of the sub-pixel. Therefore, the grid structure can not block emergent light rays of the sub-pixels, which is beneficial to improving the light-emitting rate of the display panel and the display brightness, thereby improving the display effect.

For example, in the touch display device provided in at least one embodiment of the present disclosure, a light splitting element (e.g., a light splitting grating) may be further disposed on a touch side (display side) of the touch panel, so that the touch display device may have a three-dimensional display function.

For example, the touch display device in the embodiments of the present disclosure may be any product or component having a display function, such as a television, a digital camera, a mobile phone, a watch, a tablet computer, a notebook computer, a navigator, and the like.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is to be construed as including any modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims

1. The utility model provides a touch panel, its characterized in that is divided along the cutting line by the touch template and forms, the touch template includes the touch functional area, the touch functional area includes by the touch template is followed the remaining first region and the second region after the cutting line divides, the touch template still includes:

the touch control functional layer is positioned in the touch control functional area and comprises a plurality of first electrodes and a plurality of second electrodes, the first electrodes are arranged in parallel, each first electrode of the plurality of first electrodes and each second electrode of the plurality of second electrodes are crossed with each other to form a plurality of touch control units, at least one of the plurality of touch control units is arranged as a first type touch control unit, the part of the first electrode, which is positioned in each first type touch control unit, comprises M parallel first sub-electrodes, the part of the second electrode, which is positioned in each first type touch control unit, comprises N parallel second sub-electrodes, M and N are positive integers which are not less than 2, and the first sub-electrodes and the second sub-electrodes are crossed with each other, so that the number of crossing points in the first type touch control unit is M x N;

Wherein the cutting line passes through the first type of touch units, the rest part of the first type of touch units divided by the cutting line is a second type of touch units in the touch panel, the area where the second type of touch units are positioned is the second area, the second area is positioned in the edge area of the touch panel,

the second type touch unit comprises a third sub-electrode formed by dividing the first sub-electrode by the cutting line and a fourth sub-electrode formed by dividing the second sub-electrode by the cutting line, the number of crossing points of the third sub-electrode and the fourth sub-electrode in the second type touch unit is V,2V is less than M x N, the ratio of the area in the second type touch unit to the area of the first type touch unit is less than 1/2 and not less than 1/(M x N),

the touch template further comprises a plurality of first signal lines and a plurality of second signal lines, the first signal lines and the second signal lines are positioned at different sides of the touch functional area, at least one first signal line and at least one second signal line are connected with the first type touch unit, the first signal lines connected with the first type touch unit comprise at least two first sub-signal lines, the first sub-signal lines are correspondingly connected with the first sub-electrodes, the second signal lines connected with the first type touch unit comprise at least two second sub-signal lines, the second sub-signal lines are correspondingly connected with the second sub-electrodes,

The touch panel further comprises at least one third signal line and at least one fourth signal line, wherein the third signal line is connected with the second type touch unit, the third signal line comprises third sub-signal lines which are connected with the third sub-electrodes in a one-to-one correspondence manner, the fourth signal line is connected with the second type touch unit, the fourth signal line comprises fourth sub-signal lines which are connected with the fourth sub-electrodes in a one-to-one correspondence manner, and

on the surface of the touch panel, the orthographic projection of the third signal line and the orthographic projection of the fourth signal line are spaced from each other.

2. The touch panel of claim 1, wherein the second region is located at a corner of the touch panel, the corner being an R-corner.

3. The touch panel according to claim 1 or 2, wherein,

each first signal line comprises a first main signal line, one end of each first sub signal line is connected to the first main signal line, and the other end of each first sub signal line is connected to the first sub electrode; and

each of the second signal lines includes a second main signal line, and one end of the second sub-signal line included in each of the second signal lines is connected to the second main signal line and the other end is connected to the second sub-electrode.

4. The touch panel according to claim 1 or 2, wherein,

the touch units of the touch templates are all set as the first type of touch units; or alternatively

The touch units of the touch template are divided into a first type of touch unit and a third type of touch unit, and the first electrode and the second electrode form a cross point at the part of each third type of touch unit.

5. The touch panel according to claim 1 or 2, wherein,

each first electrode defines a first channel, each second electrode defines a second channel, and the overlapping area of the first channels and the second channels is the area where the touch control unit is located.

6. A touch display device comprising a display panel and a touch panel according to any one of claims 1-5, the touch panel being located on a display side of the display panel.