Touch panel and touch display device

Abstract

The present disclosure provides a touch panel and a touch display device to improve the existing mutual capacitance touch technology, which has the problem of multi-finger touch ghost point defects and requires multiple film layers, and the process is more complicated, while the self-capacitive touch has more channels, which affects the size of the lower frame and the size of the touch chip. The touch panel, among others, includes: a plurality of touch units, the plurality of touch units are arranged in an array, each of the touch units includes a first touch electrode and a second touch electrode extending along a first direction and arranged along a second direction, each of the second touch electrodes includes M sub-second electrode blocks arranged in sequence along the first direction, M≥2; a first lead, the first lead is electrically connected to the first touch electrode in a one-to-one correspondence; a second lead, in the plurality of touch units arranged along the same first direction, the nth sub-second electrode block of each second touch electrode is electrically connected through a second lead, 1≤n≤M.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a touch panel and a touch display device. Background Art

[0002] With the development of smart technology, display screens (touch screens) with touch functions have been increasingly widely used. The current mainstream touch screens are mainly divided into two solutions: On Cell and In Cell. For example, On Cell embeds the touch layer between the color filter substrate and the polarizer, while In Cell embeds the touch layer into the pixel unit and uses the common electrode on the TFT display substrate as a touch sensor. The touch screen includes multiple touch electrodes, which are connected to the touch driver chip through touch leads. Summary of the invention

[0003] The present disclosure provides a touch panel, comprising:

[0004] A plurality of touch control units, wherein the plurality of touch control units are arranged in an array, each of the touch control units comprises a first touch control electrode and a second touch control electrode extending along a first direction and arranged along a second direction, and each of the second touch control electrodes comprises M sub-second electrode blocks arranged in sequence along the first direction, where M≥2;

[0005] first leads, the first leads being electrically connected to the first touch electrodes in a one-to-one correspondence;

[0006] A second lead line, in a plurality of the touch control units arranged along the same first direction, the nth sub-second electrode blocks of the second touch control electrodes are electrically connected through one second lead line, 1≤n≤M.

[0007] In a possible implementation manner, the first touch electrode is in a comb shape, and has a first main branch extending along the first direction, and a plurality of first branches connected to the first main branch and extending toward one side of the second touch electrode in a direction perpendicular to the first direction;

[0008] The sub-second electrode block is comb-shaped, having a second main branch extending along the first direction, and a plurality of second branches connected to the second main branch and extending toward one side of the first touch electrode along a direction perpendicular to the first direction, wherein the first branches and the second branches are alternately distributed.

[0009] In a possible implementation manner, an extension length of the second main branch in the first direction is one Mth of an extension length of the first main branch in the same touch control unit in the first direction.

[0010] In a possible implementation, the width of the first main branch along a direction perpendicular to the first direction is greater than the width of the first branch in the first direction; the width of the second main branch along a direction perpendicular to the first direction is greater than the width of the second branch in the first direction.

[0011] In a possible implementation manner, an extension length of the first branch is equal to an extension length of the second branch.

[0012] In a possible implementation, the first touch unit is rectangular; the first touch electrode and the sub-second electrode block are both block-shaped, and the length of the sub-second electrode block in the first direction is smaller than the length of the first touch electrode in the first direction.

[0013] In a possible implementation manner, a width of the first touch electrode along a direction perpendicular to the first direction is the same as a width of the sub-second electrode block along a direction perpendicular to the first direction.

[0014] In a possible implementation manner, the shapes of the sub-second electrode blocks of the same touch control unit are all square.

[0015] In a possible implementation manner, the areas of the second sub-electrode blocks of the same touch control unit are equal.

[0016] In a possible implementation manner, the first lead connected to the first touch electrode is located at a side of the same touch control unit far away from the second touch control electrode.

[0017] In a possible implementation manner, the second lead includes: a first type of touch lead located at a side of the second touch electrode away from the first touch electrode, and a plurality of sections of bent second type of touch leads avoiding the sub-second electrode block;

[0018] In each of the touch units in the same first direction: the first sub-second electrode block is connected to each other through a first-type touch lead, and the two nth sub-second electrode blocks in two adjacent touch units are connected to each other through a section of the second-type touch lead, wherein 1<n≤M.

[0019] In a possible implementation manner, the second lead further includes: a third type of touch lead located on a side of the second touch electrode facing the first touch electrode;

[0020] In the touch control units in the same first direction: the last second electrode sub-blocks are connected to each other via one of the third-type touch control leads.

[0021] In a possible implementation manner, the first touch electrode and the second touch electrode are located in the same layer.

[0022] In a possible implementation manner, the first lead, the second lead, and the first touch electrode are located in the same layer.

[0023] The embodiment of the present disclosure further provides a touch display device, comprising the touch panel provided by the embodiment of the present disclosure.

[0024] In a possible implementation, it further includes a display panel, wherein the display panel has a plurality of pixel units, and each of the pixel units includes a light-transmitting area;

[0025] The first touch electrode, and / or the sub-second electrode block, and / or the first lead, and / or the second lead have a hollow portion, and the orthographic projection of the hollow portion on the display panel overlaps with the light-transmitting area of ​​the pixel unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of pattern distribution of a self-capacitive touch control in the related art;

[0027] Figure 2 A schematic diagram of the structure of a touch panel provided in an embodiment of the present disclosure;

[0028] Figure 3 for Figure 2 An enlarged structural diagram of a touch control unit;

[0029] Figure 4 A schematic diagram of the structure of another touch panel provided by an embodiment of the present disclosure;

[0030] Figure 5 for Figure 4 An enlarged structural diagram of a touch control unit;

[0031] Figure 6 A schematic diagram of the structure of a touch panel with a third type of touch leads provided by an embodiment of the present disclosure;

[0032] Figure 7 A schematic structural diagram of another touch panel with a third type of touch leads provided by an embodiment of the present disclosure;

[0033] Figure 8 A schematic structural diagram of a first touch electrode with a hollow portion provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0034] The current self-capacitive touch pattern of the touch panel is as follows Figure 1As shown, there are multiple touch electrode blocks 01, and each touch electrode block 01 is electrically connected one by one through a touch lead 02. Each rectangular touch electrode block 01 (Touch block) is a touch channel (Touch Channel), and thus, there are too many touch channels, which seriously affects the size of the lower frame and the size of the touch chip (Touch IC Size). The traditional mutual capacitance touch solution has the problem of multi-finger touch ghost point defects, the touch electrodes (Sensor) and leads are distributed in different layers, and the process will increase accordingly.

[0035] In summary, the mutual-capacitive touch of related technologies has the problem of multi-finger touch ghost points and requires multiple film layers, making the process more complicated. The self-capacitive touch has more channels, which affects the size of the lower frame and the size of the touch chip.

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0037] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0038] In order to keep the following description of the embodiments of the present disclosure clear and concise, the present disclosure omits detailed descriptions of well-known functions and well-known components.

[0039] See also Figure 2 As shown, a touch panel is provided according to an embodiment of the present disclosure, which includes:

[0040] A plurality of touch control units 1 are arranged in an array, each of the touch control units 1 includes a first touch control electrode 11 and a second touch control electrode 12 extending along a first direction AB and arranged along a second direction CD, that is, the first touch control electrode 11 and the second touch control electrode 12 both extend along the first direction AB, the first touch control electrode 11 and the second touch control electrode 12 are arranged in sequence along the second direction CD, and each second touch control electrode 12 includes M (such as Figure 2 4) sub-second electrode blocks 120 arranged in sequence along the first direction AB, M≥2;

[0041] First lead wires 21, the first lead wires 21 are electrically connected to the first touch electrodes 11 in a one-to-one correspondence, that is, one first lead wire 21 is connected to one first touch electrode 11;

[0042] The second lead 22, in the plurality of touch control units 1 arranged along the same first direction AB, the nth sub-second electrode blocks 120 of each second touch control electrode 12 are electrically connected through one second lead 22, 1≤n≤M, that is, for example, in all the sub-second electrode blocks 120 along the same first direction AB, the nth sub-second electrode blocks 120 belonging to the first touch control unit 1 (that is, Figure 2 From top to bottom, the first sub-second electrode block 120 in the first touch sensing unit 1 (ie, the first sub-second electrode block 120 at the top of the touch sensing unit 1) and the second touch sensing unit 1 (ie, Figure 2 From top to bottom, the first sub-second electrode block 120 in the second touch sensing unit 1) and the third touch sensing unit 1 (ie, Figure 2 The first sub-second electrode block 120... in the third touch unit 1) from top to bottom are all electrically connected through a second lead 22; the second sub-second electrode block 120 in the first touch unit 1, the second sub-second electrode block 120 in the second touch unit 1, and the second sub-second electrode block 120 in the third touch unit 1... are all electrically connected through another second lead 22; among all the sub-second electrode blocks 120 along the same first direction, the third sub-second electrode block 120 in the first touch unit 1, the third sub-second electrode block 120 in the second touch unit 1, and the third sub-second electrode block 120 in the third touch unit 1... are all electrically connected through another second lead 22..., and so on.

[0043] The touch panel provided by the embodiment of the present disclosure includes: a plurality of touch control units 1, the plurality of touch control units 1 are arranged in an array, each touch control unit 1 includes a first touch control electrode 11 and a second touch control electrode 12 extending along a first direction AB and arranged along a second direction CD, each second touch control electrode 12 includes M sub-second electrode blocks 120 arranged in sequence along the first direction, M ≥ 2; a first lead 21, the first lead 21 is electrically connected to the first touch electrode 11 in a one-to-one correspondence; a second lead 22, in the plurality of touch control units 1 arranged along the same first direction AB, the nth sub-second electrode block 120 of each second touch electrode 12 is electrically connected to the nth sub-second electrode block 120 of each second touch electrode 12 through a second lead 22 1≤n≤M, that is, during touch, the touch position can be regionally located by the first touch electrode 11, and the channel can be located by the sub-second electrode block 120. The combination of the two can accurately locate the touch position, and the problem of multi-finger ghost points can be avoided. Moreover, compared with the self-capacitive touch in the prior art, each touch electrode block requires a touch channel, while in the embodiment of the present disclosure, all the sub-second touch electrode blocks 120 in the same first direction AB only require M second leads, which can reduce the number of touch channels, thereby improving the problem of too many channels in the self-capacitive touch, which affects the size of the lower frame and the size of the touch chip.

[0044] In specific implementation, the touch panel in the embodiment of the present disclosure may be a touch panel integrated with a liquid crystal display panel, or may be a touch panel integrated with an organic light emitting display panel (including an AMOLED display panel).

[0045] In a specific implementation, the patterns of the touch control unit, the first touch control electrode, and the second touch control electrode may be various, which will be described below with specific examples.

[0046] For example, combined with Figure 2 As shown, the first touch unit 1 is rectangular; the first touch electrode 11 and the sub-second electrode block 120 are both block-shaped, and the length of the sub-second electrode block 120 in the first direction AB is less than the length of the first touch electrode 11 in the first direction AB. It should be noted that the first touch electrode 11 and the sub-second electrode block 120 are both block-shaped, which can be understood as the projection of the first touch electrode 11 and the sub-second electrode block 120 is a block, that is, a regular shape without a hollow area, for example, the block can be a rectangle, a square, a circle, or a trapezoid. In the disclosed embodiment, the first touch electrode 11 and the sub-second electrode block 120 are both block-shaped, the pattern is relatively regular, easy to manufacture, and can have a high manufacturing yield.

[0047] When the first touch electrode 11 is in a strip shape and the second electrode block 120 is in a block shape, for details, see Figure 3As shown, the width h1 of the first touch electrode 11 along the direction perpendicular to the first direction AB is the same as the width h2 of the sub-second electrode block 120 along the direction perpendicular to the first direction AB. In the disclosed embodiment, the width h1 of the first touch electrode 11 is the same as the width h2 of the sub-second electrode block 120, which can facilitate the calculation of the subsequent touch positioning algorithm and reduce the amount of calculation.

[0048] When the first touch electrode 11 is in a strip shape and the second electrode block 120 is in a block shape, specifically, Figure 3 As shown, the shapes of the sub-second electrode blocks 120 of the same touch control unit 1 are all square. The shape of the first touch control electrode 11 is a rectangle. Specifically, in the same touch control unit 1, the side of the first sub-second electrode block 120 away from the last sub-second electrode block 120 is used as the first side 13, and the side of the last sub-second electrode block 120 away from the first sub-second electrode block 120 is used as the second side 14, then, the distance h3 between the first side 13 and the second side 14 can be equal to the extension length h4 of the first touch control electrode block 11 in the first direction AB, that is, the areas occupied by the first touch control electrode 11 and the second touch control electrode 12 are substantially equal. Specifically, the side length of the square is 4 mm. Specifically, each touch control unit 1 may include four sub-second electrode blocks 120.

[0049] When the first touch electrode 11 is in a strip shape and the second electrode block 120 is in a block shape, specifically, Figure 3 As shown, the areas of the sub-second electrode blocks 120 of the same touch unit 1 are equal. In the disclosed embodiment, the areas of the sub-second electrode blocks 120 of the same touch unit 1 are equal, which can avoid affecting the accurate detection of the touch position due to the different sizes of the sub-second electrode blocks 120 themselves.

[0050] For example, combining Figure 4 As shown, the first touch electrode 11 is in a comb shape, having a first main branch 111 extending along the first direction AB, and a plurality of first branches 112 connected to the first main branch 111 and extending toward the second touch electrode 12 in a direction perpendicular to the first direction AB; the sub-second electrode block 120 is in a comb shape, having a second main branch 121 extending along the first direction AB, and a plurality of second branches 122 connected to the second main branch 121 and extending toward the first touch electrode 11 in a direction perpendicular to the first direction AB, and the first branches 112 and the second branches 122 are alternately distributed. In the disclosed embodiment, the first touch electrode 11 and the sub-second electrode block 120 are both in a comb shape, and the two are interdigitated and complement each other, which can effectively avoid the problem of touch blind area when the first touch electrode 11 and the sub-second touch electrode block 120 are rectangular and co-positioned, and can avoid the problem of difficult detection of touch signals between rectangular gaps.

[0051] When the first touch electrode 11 and the second electrode block 120 are both in a comb shape, for details, see Figure 5 As shown, the extension length S1 of the second main branch 122 in the first direction AB is one-Mth of the extension length S2 of the first main branch 111 in the same touch unit 1 in the first direction. Specifically, S1 may be 4 mm, and S2 may be 16 mm.

[0052] When the first touch electrode 11 and the second electrode block 120 are both in a comb shape, for details, see Figure 5 As shown, the width S3 of the first main branch 111 along the direction perpendicular to the first direction AB is greater than the width S4 of the first branch 112 in the first direction AB; the width S5 of the second main branch 121 along the direction perpendicular to the first direction AB is greater than the width S6 of the second branch 122 in the first direction AB. Specifically, S6 may be 0.8 mm.

[0053] When the first touch electrode 11 and the sub-second electrode block 120 are both in a comb shape, specifically, the extension length S7 of the first branch 111 is equal to the extension length S8 of the second branch 122. Specifically, S8 can be 4 mm. Specifically, both S7 and S8 are as long as possible, but too long and too thin routing will increase the load.

[0054] In the specific implementation, regarding the first lead 21 in the embodiment of the present disclosure, combined with Figure 2 or Figure 4 As shown, if the first direction AB is the column direction of the touch control unit 1, the touch display panel may include a plurality of groups of first leads 21, each group of first leads 21 is located at the gap between two adjacent columns of touch control units 1, and is electrically connected to each first touch control electrode 11 in an adjacent column of touch control units 1 in a one-to-one correspondence. Specifically, the first leads 21 connected to the first touch control electrodes 11 are located on a side of the same touch control unit 1 away from the second touch control electrode 12, that is, for example, Figure 2 and Figure 4 As shown, for the first column of touch control units 1 from the left, in the same touch control unit, the second touch control electrode 12 is located on the right side, the first touch control electrode 11 is located on the left side, and each first lead 21 is located on the left side of the touch control unit 1, away from the second touch control electrode 12. In the disclosed embodiment, the first lead 21 connected to the first touch control electrode 11 is located on the side of the same touch control unit 1 away from the second touch control electrode 12, that is, the first lead 21 can be located on the side close to the first touch control electrode 11, and the second lead 22 can be located on the side close to the second touch control electrode 12, which is convenient for connection and can avoid that when the second lead 22 and the first lead 21 are located on the same side, the routing area is small, which is not conducive to the wiring of the first lead 21.

[0055] In the specific implementation, regarding the second lead 22 in the embodiment of the present disclosure, that is, in combination with Figure 2 and Figure 4 As shown, the second lead 22 may include: a first-type touch lead 221 located on the side of the second touch electrode 12 away from the first touch electrode 11, and a plurality of sections of bent second-type touch leads 222 that avoid the sub-second electrode blocks 120; in each touch unit 1 in the same first direction: the first sub-second electrode block 120 is interconnected by a first-type touch lead 221, and the two nth sub-second electrode blocks 120 in two adjacent touch units 1 are connected to each other by a section of the second-type touch lead 222, wherein 1<n≤M.

[0056] Specific, combined Figure 6 and Figure 7 As shown, the second lead 22 also includes: a third type of touch lead 223 located on the side of the second touch electrode 12 facing the first touch electrode 11; in each touch unit in the same first direction AB: the last sub-second electrode block 120 is connected to each other through a third type of touch lead 223. That is, for the last sub-second electrode block 120 in a touch unit 1, its corresponding second lead 22 can also be located between the first touch electrode 11 and the second touch electrode 12 of the touch unit 1, that is, located on the side of the second touch electrode 12 facing the first touch electrode 11. In the embodiment of the present disclosure, the second lead 22 also includes the third type of touch lead 223, which can reduce the situation where the second lead 22 has a small routing space and is more complicated when the second leads 22 are all located on the same side of the second touch electrode 12.

[0057] In a specific implementation, the first touch electrode 11 and the second touch electrode 12 are located in the same layer. Specifically, the first lead 21, the second lead 22 and the first touch electrode 11 are located in the same layer. In the embodiment of the present disclosure, when the first lead 21, the second lead 22, the first touch electrode 11 and the second touch electrode 12 are all located in the same layer, the manufacturing process can be effectively reduced and the yield can be improved.

[0058] The embodiment of the present disclosure further provides a touch display device, including the touch panel provided by the embodiment of the present disclosure.

[0059] In a possible implementation, the display panel is further included, the display panel has a plurality of pixel units, each pixel unit includes a light-transmitting area; the first touch electrode, and / or the sub-second electrode block, and / or the first lead, and / or the second lead have a hollow portion, and the orthographic projection of the hollow portion on the display panel overlaps with the light-transmitting area of ​​the pixel unit, such as Figure 8As shown, that is, the small hexagon of the black hole is a hollow portion formed by the first touch electrode, and / or the sub-second electrode block, and / or the first lead, and / or the second lead, and the shape of the hollow portion is the same as the shape of the light-transmitting area of ​​the pixel unit. In the embodiment of the present disclosure, the first touch electrode, and / or the sub-second electrode block, and / or the first lead, and / or the second lead have a hollow portion, which can ensure transmittance and brightness.

[0060] The beneficial effects of the embodiments of the present disclosure are as follows: the touch panel provided by the embodiments of the present disclosure comprises: a plurality of touch control units, the plurality of touch control units are arranged in an array, each touch control unit comprises a first touch control electrode and a second touch control electrode extending along a first direction and arranged along a second direction, each second touch control electrode comprises M sub-second electrode blocks arranged in sequence along the first direction, M≥2; a first lead, the first lead is electrically connected to the first touch control electrode in a one-to-one correspondence; a second lead, in the plurality of touch control units arranged along the same first direction, the nth sub-second electrode blocks of each second touch electrode are electrically connected through a second lead, 1≤n ≤M, that is, during touch, the touch position can be regionally located by the first touch electrode, and the channel can be located by the sub-second electrode block. The combination of the two can accurately locate the touch position, and the problem of multi-finger ghost points can be avoided. Moreover, compared with the self-capacitive touch in the prior art, each touch electrode block requires a touch channel, while in the embodiment of the present disclosure, all the sub-second touch electrode blocks in the same first direction only require M second leads, which can reduce the number of touch channels, and further improve the problem of too many channels in the self-capacitive touch, which affects the size of the lower frame and the size of the touch chip.

[0061] Although the preferred embodiments of the present disclosure have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present disclosure.

[0062] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present disclosure without departing from the spirit and scope of the embodiments of the present disclosure. Thus, if these modifications and variations of the embodiments of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is also intended to include these modifications and variations.

Claims

1. A touch panel, wherein: include: A plurality of touch control units, wherein the plurality of touch control units are arranged in an array, each of the touch control units comprises a first touch control electrode and a second touch control electrode extending along a first direction and arranged along a second direction, and each of the second touch control electrodes comprises M sub-second electrode blocks arranged in sequence along the first direction, where M≥2; first leads, the first leads being electrically connected to the first touch electrodes in a one-to-one correspondence; a second lead, wherein in a plurality of the touch control units arranged along the same first direction, the nth sub-second electrode blocks of the second touch control electrodes are electrically connected through one second lead, 1≤n≤M; The second lead comprises: a first type of touch lead located at a side of the second touch electrode away from the first touch electrode, and a plurality of sections of bent second type of touch leads avoiding the sub-second electrode blocks; in each of the touch units in the same first direction: the first sub-second electrode block is connected to each other through one of the first type of touch lead, and the two nth sub-second electrode blocks in two adjacent touch units are connected to each other through one section of the second type of touch lead, wherein 1<n≤M; The second leads also include: a third type of touch leads located on the side of the second touch electrode facing the first touch electrode; in each of the touch units in the same first direction: the last second electrode sub-block is connected to each other through one of the third type of touch leads.

2. The touch panel according to claim 1, wherein: The first touch electrode is in a comb shape, and has a first main branch extending along the first direction, and a plurality of first branches connected to the first main branch and extending toward one side of the second touch electrode in a direction perpendicular to the first direction; The sub-second electrode block is comb-shaped, having a second main branch extending along the first direction, and a plurality of second branches connected to the second main branch and extending toward one side of the first touch electrode along a direction perpendicular to the first direction, wherein the first branches and the second branches are alternately distributed.

3. The touch panel according to claim 2, wherein: An extension length of the second main branch in the first direction is one-Mth of an extension length of the first main branch in the same touch control unit in the first direction.

4. The touch panel according to claim 2, wherein: The width of the first main branch along a direction perpendicular to the first direction is greater than the width of the first branch in the first direction; the width of the second main branch along a direction perpendicular to the first direction is greater than the width of the second branch in the first direction.

5. The touch panel according to claim 2, wherein: An extension length of the first branch is equal to an extension length of the second branch.

6. The touch panel according to claim 1, wherein: The touch control unit is rectangular; the first touch control electrode and the sub-second electrode block are both block-shaped, and the length of the sub-second electrode block in the first direction is smaller than the length of the first touch control electrode in the first direction.

7. The touch panel according to claim 6, wherein: The width of the first touch electrode along the direction perpendicular to the first direction is the same as the width of the sub-second electrode block along the direction perpendicular to the first direction.

8. The touch panel according to claim 7, wherein: The shapes of the sub-second electrode blocks of the same touch control unit are all square.

9. The touch panel according to claim 8, wherein: The areas of the second sub-electrode blocks of the same touch control unit are equal.

10. The touch panel according to claim 2 or 5, wherein: The first lead connected to the first touch electrode is located at a side of the same touch unit away from the second touch electrode.

11. The touch panel according to claim 1, wherein: The first touch control electrode and the second touch control electrode are located in the same layer.

12. The touch panel according to claim 11, wherein: The first lead, the second lead and the first touch electrode are located in the same layer.

13. A touch display device, wherein: It comprises a touch panel as described in any one of claims 1 to 12.

14. The touch display device according to claim 13, wherein: Also included is a display panel, the display panel having a plurality of pixel units, each of the pixel units including a light-transmitting area; The first touch electrode, and / or the sub-second electrode block, and / or the first lead, and / or the second lead have a hollow portion, and the orthographic projection of the hollow portion on the display panel overlaps with the light-transmitting area of ​​the pixel unit.

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