CN204203918U - touch panel - Google Patents

Abstract

The utility model relates to a touch panel comprising: a first substrate having a first surface, the first surface having a central touch area and a peripheral touch area, the peripheral touch area being located on one side of the central touch area; a plurality of first sensing electrodes being arranged on the central touch area and arranged along a first direction; and a plurality of peripheral dummy electrode columns being arranged on the peripheral touch area and arranged along a second direction, the first direction being staggered with the second direction, wherein the peripheral dummy electrode columns comprise: a first peripheral dummy electrode column and a second peripheral dummy electrode column, wherein the length of the first peripheral dummy electrode column in the second direction is less than the length of the second peripheral dummy electrode column in the second direction.

Description

touch panel

technical field

The utility model relates to a touch panel, in particular to a touch panel which can improve the sensitivity of the touch panel or help the circuit design of touch electrodes.

Background technique

In recent years, with the development trend of humanized and simplified operation, touch display devices with touch panels are more and more widely used in daily life. Since users can input signals by directly touching the touch panel with their hands or other objects, the user's dependence on other input devices (such as keyboards, mice, remote controls, etc.) is reduced or even eliminated, and the convenience of user operations is greatly improved.

In the above-mentioned example of the touch display panel, there is a technology for reducing the number of layers of the device structure by integrating the circuit of the touch panel on the glass substrate of the display panel, thereby achieving the purpose of thinning. However, the circuits formed on the glass substrate are generally made of transparent conductive materials, such as indium tin oxide (ITO) or indium zinc oxide (IZO). Since the refractive index of indium tin oxide or indium zinc oxide is inconsistent with that of the transparent substrate, it is easy to Due to the difference in the refractive index between the two, the naked eye can easily distinguish the conductive area and the non-conductive area on the glass substrate, thereby affecting the overall transparent appearance.

In view of the above problems, some touch display devices are provided with dummy electrodes to reduce the visibility of the transparent lines; however, the setting of the dummy electrodes may indeed cause the problem of decreased touch sensitivity. In view of this, there is an urgent need to develop a touch panel, which can achieve the purpose of reducing line visibility and simultaneously improving touch sensitivity.

Utility model content

The main purpose of the present invention is to provide a touch panel. By designing the dummy electrode rows to have different widths or different numbers of dummy electrodes, the sensitivity of the touch panel can be improved or the circuit design of the touch electrodes can be helped.

To achieve the above object, the first implementation aspect of the present invention is to provide a touch panel, including: a first substrate with a first surface, the first surface has a central touch area and a peripheral touch area, The peripheral touch area is located on one side of the central touch area; a plurality of first sensing electrodes are disposed on the central touch area and arranged along a first direction; and a plurality of peripheral dummy electrode rows are disposed on the central touch area On the peripheral touch area, arranged along a second direction, the first direction intersects with the second direction, wherein the peripheral dummy electrode rows include: a first peripheral dummy electrode row and a second peripheral dummy electrode row, Wherein, the length of the first peripheral dummy electrode row in the second direction is smaller than the length of the second peripheral dummy electrode row in the second direction.

The touch panel according to the first implementation aspect of the present invention may further include: a terminal portion electrically connected to the first sensing electrodes, the terminal portion is adjacent to an edge of the first substrate, and the edge is along the first direction, wherein the first peripheral dummy electrode row is located between the edge and the second peripheral dummy electrode row.

In the touch panel according to the first implementation aspect of the present invention, the first peripheral dummy electrode row includes a plurality of first peripheral dummy electrodes arranged along the first direction, and the second peripheral dummy electrode row includes a plurality of The second peripheral dummy electrodes arranged in the first direction.

In the touch panel according to the first implementation aspect of the present invention, the central touch area further includes a first central dummy electrode row, and the first central dummy electrode row includes a plurality of first A central dummy electrode; wherein, the number of the first peripheral dummy electrodes included in the first peripheral dummy electrode row is smaller than the number of the first central dummy electrodes included in the first central dummy electrode row.

In the touch panel according to the first implementation aspect of the present invention, one of the first sensing electrodes further includes a plurality of slits extending along the second direction.

In the touch panel according to the first implementation aspect of the present invention, the distance between two adjacent slits is substantially equal to the width of the first peripheral dummy electrode or the width of the second peripheral dummy electrode.

In the touch panel according to the first implementation aspect of the present invention, the first sensing electrodes, the first peripheral dummy electrodes and the second peripheral dummy electrodes respectively have jagged edges.

The touch panel according to the first implementation aspect of the present utility model may further include: a plurality of sub-pixels disposed on a second surface of the first substrate, the first surface is opposite to the second surface; wherein, the first The length of the peripheral dummy electrode row or the second peripheral dummy electrode row in the second direction is substantially equal to the length of the sub-pixels in the second direction that are multiples of an even number.

In the touch panel according to the first implementation aspect of the present invention, a partial area of the first peripheral dummy electrode row does not overlap with the sub-pixels.

In the touch panel according to the first implementation aspect of the present utility model, two adjacent first peripheral dummy electrodes respectively have a first width and a second width in the first direction, and the first width is larger than the second width. width.

The touch panel according to the first implementation aspect of the present utility model may further include: a second substrate disposed opposite to the first substrate; a plurality of second sensing electrodes disposed on the second substrate along the Arranged in two directions.

In addition, the second implementation aspect of the present invention provides another touch panel, including: a first substrate with a first surface, the first surface has a central touch area and a peripheral touch area, the peripheral The touch area is located on one side of the central touch area; a plurality of first sensing electrodes are arranged on the central touch area and arranged along a first direction; a connecting portion, two adjacent first sensing electrodes The electrodes are electrically connected through the connecting portion; and a plurality of central dummy electrode columns are located between two adjacent first sensing electrodes and arranged along a second direction, the first direction intersects with the second direction, wherein the Some central dummy electrode columns include: a first central dummy electrode column and a second central dummy electrode column, and the first central dummy electrode column is located between the connecting portion and the second central dummy electrode column; The length of a central dummy electrode row in the second direction is smaller than the length of the second central dummy electrode row in the second direction.

In the touch panel according to the second implementation aspect of the present invention, the first central dummy electrode row includes a plurality of first central dummy electrodes arranged along the first direction, and the second central dummy electrode row includes a plurality of first central dummy electrodes arranged along the first direction. The second central dummy electrodes arranged in the first direction.

In the touch panel according to the second implementation aspect of the present invention, the peripheral touch area further includes a first peripheral dummy electrode row, and the first peripheral dummy electrode row includes a plurality of first Peripheral dummy electrodes; wherein, the number of the first peripheral dummy electrodes included in the first peripheral dummy electrode row is smaller than the number of the first central dummy electrodes included in the first central dummy electrode row.

In the touch panel according to the second implementation aspect of the present invention, each of the first sensing electrodes further includes a plurality of slits extending along the second direction.

In the touch panel according to the second implementation aspect of the present invention, the distance between two adjacent slits is substantially equal to the width of the first central dummy electrode or the width of the second central dummy electrode.

In the touch panel according to the second implementation aspect of the present invention, the first sensing electrodes, the first central dummy electrodes and the second central dummy electrodes respectively have jagged edges.

The touch panel according to the second implementation aspect of the present utility model may further include: a plurality of sub-pixels disposed on a second surface of the first substrate, the first surface is opposite to the second surface; wherein, the first The length of the central dummy electrode row or the second central dummy electrode row in the second direction is substantially equal to the lengths of the sub-pixels in even multiples in the second direction.

In the touch panel according to the second implementation aspect of the present invention, a partial area of the first central dummy electrode column does not overlap with the sub-pixels.

In the touch panel according to the second implementation aspect of the present invention, two adjacent first central dummy electrodes respectively have a first width and a second width in the first direction, and the first width is larger than the second width. width.

The touch panel according to the second implementation aspect of the present invention may further include: a second substrate disposed opposite to the first substrate; a plurality of second sensing electrodes disposed on the second substrate along the Arranged in two directions. In the touch panel provided by the present invention, the length of the first peripheral dummy electrode in the second direction is designed to be smaller than the length of the second peripheral dummy electrode in the second direction, wherein the first peripheral dummy electrode row is close to the first The edge of the substrate or the connecting portion of the first sensing electrode can improve the sensitivity of the touch panel. In addition, in the touch panel provided by the present invention, by designing the number of second peripheral dummy electrodes included in each second peripheral dummy electrode column located in the peripheral touch area to be smaller than that in the central touch area The number of second peripheral dummy electrodes included in each second peripheral dummy electrode row can further improve the sensitivity of the touch panel.

Description of drawings

FIG. 1A is an exploded schematic diagram of a touch panel according to Embodiment 1 of the present invention.

FIG. 1B is a schematic cross-sectional view of the touch panel according to Embodiment 1 of the present invention.

FIG. 2 is a schematic diagram of the first sensing electrode of the touch panel according to Embodiment 1 of the present invention.

3A is a schematic diagram of part of the first sensing electrodes and dummy electrode regions of the touch panel according to Embodiment 1 of the present invention.

FIG. 3B is an enlarged view of a part of FIG. 3A .

4A is a schematic diagram of part of the first sensing electrodes and dummy electrode regions on the first surface of the touch panel according to Embodiment 1 of the present invention, and the sub-pixels on the second surface.

FIG. 4B is an enlarged view of a part of FIG. 4A .

FIG. 5 is a schematic diagram of part of the first sensing electrodes and dummy electrode regions of the touch panel according to Embodiment 2 of the present invention.

6 is a schematic diagram of part of the first sensing electrodes and dummy electrode regions of the touch panel according to Embodiment 3 of the present invention.

FIG. 7A is a schematic diagram of part of the first sensing electrodes and dummy electrode regions of the touch panel according to Embodiment 4 of the present invention.

FIG. 7B is an enlarged view of a part of FIG. 7A .

【Symbol Description】

11 first substrate; 11a edge;

11b first surface; 11c second surface;

111 first sensing electrode; 111a, 15a slit;

112 connection part; 113 extension part;

12 Second substrate; 121 Second sensing electrode;

114 Terminal part; 13 Liquid crystal layer;

14 color filter layer; 141 sub-pixels;

15 dummy electrode area;

151, 151' the first peripheral dummy electrode row;

151a, 151a' the first peripheral dummy electrode;

152 The second peripheral dummy electrode row;

152a The second peripheral dummy electrode; 153 The third peripheral dummy electrode column;

161a first central dummy electrode; 162a second central dummy electrode;

A area; B surrounding area;

C Central touch area; D1, D1’, D2, D4, D5 length;

D3 spacing; P Peripheral touch area;

Px pixel area; X first direction;

Y Second Direction; W Width;

w1 first width; w2 second width.

Detailed ways

The following is a description of the implementation of the utility model through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the utility model from the content disclosed in this specification. The utility model can also be implemented or applied through other different specific embodiments, and various modifications and changes can be made to the details in this specification for different viewpoints and applications without departing from the spirit of the utility model.

Example 1

As shown in FIG. 1A and FIG. 1B , the touch panel of this embodiment includes: a first substrate 11 having at least one edge 11a; a plurality of first sensing electrodes 111 disposed on the first substrate 11 along a Arranged in the first direction. In addition, the touch panel of this embodiment further includes: a second substrate 12 disposed opposite to the first substrate 11; and a plurality of second sensing electrodes 121 disposed on the second substrate 12 and extending along a second direction. In this embodiment, the first sensing electrodes 111 and the second sensing electrodes 121 are used as touch electrodes; in addition, the first direction and the second direction intersect, especially, the first direction and the second direction intersect substantially vertically. Here, the term "substantially perpendicular to each other" means that the angle between the first direction and the second direction is between 85° and 90°.

As shown in FIG. 1B , the touch panel of this embodiment is a touch display panel integrated with a display panel. Wherein, a liquid crystal layer 13 is arranged between the first substrate 11 and the second substrate 12; and the first substrate 11 has a first surface 11b and a second surface 11c opposite to the first surface 11b, wherein the first The first sensing electrode 111 is disposed on the surface 11b, and a color filter layer 14 is disposed on the second surface 11c of the first substrate 11, including a plurality of sub-pixels. In this embodiment, a liquid crystal touch display panel is used as an example, but the utility model is not limited thereto; in other embodiments of the utility model, the touch panel of this embodiment can also be combined with other Known display panel integration, for example, can be a touch display panel integrated with an organic light emitting diode display panel.

Next, the structure of the first sensing electrode and its adjacent elements on the first substrate of the touch panel of the present embodiment will be described in detail. As shown in FIG. 2 , in the touch panel of this embodiment, a plurality of first sensing electrodes 111 are arranged on the first substrate 11 and arranged along a first direction X; in addition, the first sensing electrodes 111 of the first substrate 11 The surface 11b includes a central touch area C, and two peripheral touch areas P located on both sides of the central touch area C, and also includes two peripheral areas B located outside the peripheral touch area P, and the first sensing electrode 111 Set on the central touch area C. Wherein, in the central touch area C and the peripheral touch area P of the first substrate 11, the area outside the first sensing electrode 111 is a dummy electrode area 15 provided with a dummy electrode (not shown); and The arrangement of dummy electrodes (not shown in the figure) makes it difficult for the user to observe the pattern of the first sensing electrode 111 when using the touch panel of this embodiment, thereby improving the visibility of the pattern of the first sensing electrode 111 question. Here, the first sensing electrodes 111 and the dummy electrodes are formed of electrode materials known in the art as touch electrodes, such as transparent conductive oxides such as ITO and IZO; After the oxide layer, the first sensing electrodes 111 and the dummy electrodes (not shown) are defined by patterning processes such as etching.

In addition, as shown in FIG. 1A and FIG. 2 , in the touch panel of this embodiment, two adjacent first sensing electrodes 111 are electrically connected through two connecting portions 112 , and preferably the second connecting portion 112 is connected to the first sensing electrode 112 . The edge 11a of the substrate 11 is substantially parallel; in addition, the touch panel of this embodiment further includes an extension portion 113 connected to one of the two connection portions 112, and the extension portion 113 is electrically connected to a terminal portion 114, so that The terminal portion 114 is electrically connected to the first sensing electrode 111; wherein, the two connecting portions 112 and the extension portion 113 are integrally formed with the first sensing electrode 111; here, the terminal portion 114 is adjacent to one of the first substrate 11 along the first Edge 11 extending in direction X. As shown in FIG. 2 , the extension portion 113 extends obliquely and is electrically connected to the terminal portion 114; Another direction in which the direction X and the second direction Y intersect.

Next, part of the first sensing electrodes on the first substrate of the touch panel of this embodiment and the dummy electrode structure on the dummy electrode region will be described in detail. As shown in FIG. 3A, which is an enlarged view of the area A shown in FIG. Arranged in a second direction Y, wherein the peripheral dummy electrode rows include: at least one first peripheral dummy electrode row 151 , 151 ′, arranged side by side with the first sensing electrode 111 , and each first peripheral dummy electrode row 151 , 151 'includes a plurality of first peripheral dummy electrodes 151a, 151a' arranged along the first direction X; The row 152 includes a plurality of second peripheral dummy electrodes 152a arranged along the first direction X; wherein the first peripheral dummy electrode rows 151, 151' are located on the edge 11a of the first substrate 11 (as shown in FIG. 1A ) and the second peripheral dummy electrodes Between the electrode columns 152 . In this embodiment, the first peripheral dummy electrode rows 151, 151' and the second peripheral dummy electrode row 152 are arranged along the second direction Y. In addition, the first peripheral dummy electrodes 151a, 151a' of the first peripheral dummy electrode rows 151, 151', the second peripheral dummy electrodes 152a of the second peripheral dummy electrode row 152 and the first sensing electrodes 111 are formed by etching. The defined slits 15a are electrically insulated from each other, as shown in FIG. 3B. In addition, the first direction X and the second direction Y intersect, especially, the first direction X and the second direction Y are substantially perpendicular to each other. In addition, the lengths D1, D1' of the first peripheral dummy electrodes 151a, 151a' of the first peripheral dummy electrode rows 151, 151' in the second direction Y are smaller than the second peripheral dummy electrodes 152a of the second peripheral dummy electrode row 152. The length D2 in the second direction Y. At the same time, in the peripheral touch area P, starting from the edge 11a of the first substrate 11 (as shown in FIG. 1A ), the lengths D1' and D1 of the first peripheral dummy electrodes 151a' and 151a in the second direction Y also gradually increase. In particular, in the first peripheral dummy electrode row 151 ′ adjacent to the connection portion 112 , the first peripheral dummy electrode 151 a ′ has a minimum length D1 ′ in the second direction Y.

In this embodiment, by designing the lengths D1, D1' of the first peripheral dummy electrodes 151a, 151a' in the second direction Y to be smaller than the length D2 of the second peripheral dummy electrodes 152a in the second direction Y, it is possible to Improve the sensitivity of the touch panel. In addition, although the entire touch panel is covered with dummy electrodes to prevent the user from easily observing the pattern of the first sensing electrodes 111, in order to facilitate the extension part 113 to extend obliquely and electrically connect to the terminal part (not shown), The touch panel of this embodiment is designed such that the first peripheral dummy electrodes 151 a ′ of the first peripheral dummy electrode row 151 ′ adjacent to the connecting portion 112 have a minimum length D1 ′.

As shown in FIG. 3A , in the touch panel of this embodiment, a plurality of central dummy electrode rows are also provided on the central touch area C, including: a first central dummy electrode row, including a plurality of dummy electrode rows along the first direction X an array of first central dummy electrodes 161a; and a second central dummy electrode row, which includes a plurality of second central dummy electrodes 162a arranged along the first direction X. Wherein, the first central dummy electrode row including the first central dummy electrode 161a and the second central dummy electrode row including the second central dummy electrode 162a are located between two adjacent first sensing electrodes 111 along a second direction. Arranged in Y, and the first central dummy electrode column including the first central dummy electrode 161 a is located between the connection portion 112 and the second central dummy electrode column including the second central dummy electrode 162 a. In addition, the length D1 of the first central dummy electrode array including the first central dummy electrode 161a along the second direction Y is smaller than the length D2 of the second central dummy electrode array including the second central dummy electrode 162a along the second direction Y .

In addition, as shown in FIG. 3A, in the touch panel of this embodiment, the width of the peripheral touch area P is smaller than the width of the central touch area C; therefore, each second peripheral dummy electrode located in the peripheral touch area P The number of the second peripheral dummy electrodes 152a included in the column 152 is less than the number of the second central dummy electrodes 162a included in each second central dummy electrode column located in the central touch area C; The number of the first peripheral dummy electrodes 151a, 151a' included in each first peripheral dummy electrode column 151, 151' is less than the first central dummy electrode included in the first central dummy electrode column located in the central touch area C 161a number. Since the main touch area of the touch panel of this embodiment is the central touch area C provided with the first sensing electrodes 111, in order to improve the touch sensitivity of the touch panel, it is necessary to reduce the central touch area as much as possible. The area size of the peripheral touch area P on the periphery of C; therefore, in the touch panel of this embodiment, the number of peripheral dummy electrodes included in the peripheral dummy electrode column located in the peripheral touch area P is designed to be smaller than the number of peripheral dummy electrodes located in the central touch area. The number of central dummy electrodes contained in the central dummy electrode row of the control area C can make the width of the peripheral touch area P smaller than the width of the central touch area C, thereby achieving the purpose of improving the touch sensitivity of the touch panel.

In addition, as shown in FIG. 3A , in the touch panel of this embodiment, each first sensing electrode 111 further includes a plurality of slits 111 a extending along the second direction Y. Referring to FIG. Here, the distance D3 between two adjacent slits 111a is substantially equal to the width W of the first peripheral dummy electrodes 151a, 151a' or the second peripheral dummy electrodes 152a. Here, the term "substantially equal to" means that the variation between the distance between two adjacent slits and the width of the first peripheral dummy electrode or the width of the second peripheral dummy electrode is 0 to 10%.

In the touch panel of this embodiment, the first substrate 11 and the second substrate 12 can use common substrates in this technical field, such as glass substrates and plastic substrates. In addition, as shown in FIG. 1B, the touch panel of this embodiment is a touch display panel integrated with a liquid crystal display panel. There is a color filter layer 14, which includes a plurality of sub-pixels 141, as shown in Figures 4A and 4B, after the touch area 11b on the first surface of the touch panel overlaps with the color filter layer 14 on the second surface 11c schematic diagram. Wherein, the length D1 of the first peripheral dummy electrode row 151 in the second direction Y or the length D2 of the second peripheral dummy electrode row 152 in the second direction Y is substantially equal to the number of even multiples of sub-pixels 141 in the second direction Y. Length D4 in direction Y. For example, in this embodiment, the length D1 of the first peripheral dummy electrode column 151 in the second direction Y is substantially equal to the length D4 of four times the number of sub-pixels 141 in the second direction Y; the second peripheral The length D2 of the dummy electrode column 152 in the second direction Y is substantially equal to the length D4 of eight times the number of sub-pixels 141 in the second direction Y. In addition, as shown in FIG. 4A , in the touch panel of this embodiment, the first peripheral dummy electrode row 151 ′ does not overlap with the sub-pixel 141 .

Example 2

The touch panel of this embodiment is the same as that of Embodiment 1 except for the following differences. First, as shown in FIG. 5, the first sensing electrode 111, the second peripheral dummy electrode 152a, the first central dummy electrode 161a, and the second central dummy electrode 162a of this embodiment have zigzag edges respectively; In this embodiment, the second peripheral dummy electrode 152a, the first central dummy electrode 161a, and the second central dummy electrode 162a respectively have serrated edges, but the length D1 refers to the distance between the upper edge and the lower edge of the first central dummy electrode 161a. The shortest distance in the second direction Y, and the length D2 refers to the shortest distance in the second direction Y between the upper edge and the lower edge of the second peripheral dummy electrode 152 a and the second central dummy electrode 162 a.

Secondly, in the touch panel of this embodiment, the first peripheral dummy electrode row 151 in the first embodiment is not provided in the peripheral touch area P.

Here, the touch panel of this embodiment is also a touch display panel integrated with a liquid crystal display panel, wherein the partial area of the second peripheral dummy electrode row 152 is not connected with the pixel area Px having a plurality of sub-pixels (not shown in the figure). (where the dotted line frame starts) overlapping.

Example 3

The touch panel of this embodiment is the same as that of Embodiment 1 except for the following differences. First, as shown in FIG. 6, in the touch panel of this embodiment, the extension portion 113 does not extend obliquely, but extends along the second direction Y; The touch panel of the embodiment may further include a third peripheral dummy electrode row 153, the length D5 of which in the second direction Y is not particularly limited, it depends on the extension direction of the extension portion 113, and is preferably smaller than the second peripheral dummy electrode row 153. The length D2 of the electrode row 152 in the second direction Y.

Example 4

The touch panel of this embodiment is the same as that of Embodiment 1 except for the following differences. Firstly, as shown in FIGS. 7A and 7B , two adjacently arranged first peripheral dummy electrodes 151a or second peripheral dummy electrodes 152a respectively have a first width w1 and a second width w2 in the first direction X, and the second A width w1 is greater than a second width w2. In other words, between the first peripheral dummy electrodes 151a in the first peripheral dummy electrode row 151 or between the second peripheral dummy electrodes 152a in the second peripheral dummy electrode row 152, there are a plurality of electrodes extending along the second direction Y. The slits 15a, these slits 15a are alternately along the first distance (almost equal to the distance indicated by the first width w1) and a second distance (almost equal to the distance indicated by the second width w2) respectively. Arrange in one direction X. Among them, preferably, the first peripheral dummy electrodes 151a with the first width w1 and the first peripheral dummy electrodes 151a with the second width w2 in each first peripheral dummy electrode row 151 are alternately arranged, and each second peripheral In the dummy electrode row 152 , the second peripheral dummy electrodes 152 a with the first width w1 and the second peripheral dummy electrodes 152 a with the second width w2 are alternately arranged.

Secondly, the first central dummy electrode row including the first central dummy electrode is not disposed between the connection portion 112 and the second central dummy electrode row including the second central dummy electrode 162 a.

The touch panel prepared in the foregoing embodiments of the present invention can be applied to any electronic device known in the art that requires touch sensing, especially touch display equipment, such as monitors, mobile phones, notebook computers, cameras , cameras, music players, mobile navigation devices, televisions, etc.

The above-mentioned embodiments are only examples for convenience of description, and the scope of rights claimed by the utility model should be determined by the claims, rather than limited to the above-mentioned embodiments.

Claims (21)

1. A touch panel, characterized in that, comprising: A first substrate having a first surface, the first surface has a central touch area and a peripheral touch area, the peripheral touch area is located on one side of the central touch area; a plurality of first sensing electrodes arranged on the central touch area and arranged along a first direction; and A plurality of peripheral dummy electrode rows are arranged on the peripheral touch area and arranged along a second direction, the first direction intersects with the second direction, wherein the peripheral dummy electrode rows include: a first peripheral dummy electrode row and a second peripheral dummy electrode column, Wherein, the length of the first peripheral dummy electrode row in the second direction is smaller than the length of the second peripheral dummy electrode row in the second direction. 2. The touch panel according to claim 1, further comprising: a terminal portion electrically connected to the first sensing electrodes, the terminal portion is adjacent to an edge of the first substrate, the edge extends along the first direction, Wherein, the first peripheral dummy electrode row is located between the edge and the second peripheral dummy electrode row. 3. The touch panel according to claim 1, wherein the first peripheral dummy electrode row comprises a plurality of first peripheral dummy electrodes arranged along the first direction, and the second peripheral dummy electrode row comprises a plurality of peripheral dummy electrodes arranged along the first direction. The second peripheral dummy electrodes arranged in the first direction. 4. The touch panel according to claim 3, wherein, the central touch area further includes a first central dummy electrode row, and the first central dummy electrode row includes a plurality of first electrodes arranged along the first direction. central dummy electrode; Wherein, the number of the first peripheral dummy electrodes included in the first peripheral dummy electrode row is smaller than the number of the first central dummy electrodes included in the first central dummy electrode row. 5. The touch panel according to claim 3, wherein one of the first sensing electrodes further comprises a plurality of slits extending along the second direction. 6. The touch panel according to claim 5, wherein the distance between two adjacent slits is equal to the width of the first peripheral dummy electrode or the width of the second peripheral dummy electrode. 7 . The touch panel according to claim 3 , wherein the first sensing electrodes, the first peripheral dummy electrodes and the second peripheral dummy electrodes respectively have jagged edges. 8. The touch panel according to claim 1, further comprising: a plurality of sub-pixels disposed on a second surface of the first substrate, the first surface is opposite to the second surface; Wherein, the length of the first peripheral dummy electrode row or the second peripheral dummy electrode row in the second direction is equal to the length of the sub-pixels in even multiples in the second direction. 9. The touch panel according to claim 8, wherein a partial area of the first peripheral dummy electrode row does not overlap with the sub-pixels. 10. The touch panel according to claim 3, wherein two adjacent first peripheral dummy electrodes respectively have a first width and a second width in the first direction, and the first width is larger than the second width. 11. The touch panel according to claim 1, further comprising: a second substrate, disposed opposite to the first substrate; A plurality of second sensing electrodes are arranged on the second substrate and arranged along the second direction. 12. A touch panel, characterized in that, comprising: A first substrate having a first surface, the first surface has a central touch area and a peripheral touch area, the peripheral touch area is located on one side of the central touch area; a plurality of first sensing electrodes arranged on the central touch area and arranged along a first direction; a connecting portion through which two adjacent first sensing electrodes are electrically connected; and A plurality of central dummy electrode rows, located between two adjacent first sensing electrodes, arranged along a second direction, the first direction intersects with the second direction, wherein the central dummy electrode rows include: a first a central dummy electrode row and a second central dummy electrode row, and the first central dummy electrode row is located between the connecting portion and the second central dummy electrode row; Wherein, the length of the first central dummy electrode array in the second direction is smaller than the length of the second central dummy electrode array in the second direction. 13. The touch panel according to claim 12, wherein the first central dummy electrode row comprises a plurality of first central dummy electrodes arranged along the first direction, and the second central dummy electrode row comprises a plurality of The second central dummy electrodes arranged in the first direction. 14. The touch panel according to claim 13, wherein, the peripheral touch area further includes a first peripheral dummy electrode row, and the first peripheral dummy electrode row includes a plurality of first dummy electrodes arranged along the first direction. Peripheral dummy electrodes; Wherein, the number of the first peripheral dummy electrodes included in the first peripheral dummy electrode row is smaller than the number of the first central dummy electrodes included in the first central dummy electrode row. 15. The touch panel according to claim 13, wherein each of the first sensing electrodes further comprises a plurality of slits extending along the second direction. 16. The touch panel according to claim 15, wherein the distance between two adjacent slits is equal to the width of the first central dummy electrode or the width of the second central dummy electrode. 17 . The touch panel according to claim 13 , wherein the first sensing electrodes, the first central dummy electrodes and the second central dummy electrodes respectively have jagged edges. 18. The touch panel according to claim 12, further comprising: a plurality of sub-pixels disposed on a second surface of the first substrate, the first surface is opposite to the second surface; Wherein, the length of the first central dummy electrode row or the second central dummy electrode row in the second direction is equal to the lengths of the sub-pixels in even multiples in the second direction. 19. The touch panel according to claim 18, wherein a partial area of the first central dummy electrode column does not overlap with the sub-pixels. 20. The touch panel according to claim 13, wherein two adjacent first central dummy electrodes respectively have a first width and a second width in the first direction, and the first width is larger than the second width. 21. The touch panel according to claim 12, further comprising: a second substrate, disposed opposite to the first substrate; A plurality of second sensing electrodes are arranged on the second substrate and arranged along the second direction.