TW201619795A - Capacitive touch device - Google Patents

Abstract

The present invention discloses a capacitive touch device. The capacitive touch device has an active area defined on a surface of a substrate. Multiple electrode sets are mounted on the surface of the substrate. The electrode sets are mounted side by side and are parallel to a first direction. Each electrode set comprises multiple pairs of electrodes and multiple wires. The electrodes are parallel to a second direction and mounted in sequence. Each wire is electronically connected to a respective pair of electrodes. At least one of the electrode sets that is adjacent to an edge of the active area has a first sensing area. The other electrode sets which are not adjacent to the edge of the active area has a second sensing area. The second sensing area is greater than the first sensing area. By decreasing the sensing area of the at least one electrode set that is adjacent to the edge of the active area, wiring problem of a touch device having a narrow frame can be resolved and sensing accuracy of the edge of the active area is improved.

Description

Capacitive touch device

The present invention relates to a touch device, and more particularly to a capacitive touch device that changes the sensing area of adjacent electrodes at the boundary of the active area to solve the problem of routing of the narrow bezel.

Since the single-layer capacitive touch panel is only used as an electrode and a trace on one side of the substrate, it has the advantages of high process yield and low cost. However, there are still many limitations in the realization of the touch function of multiple objects. It is difficult to compare with a double-layer capacitive touch panel. With the continuous improvement of process technology, single-layer capacitive touch panels have gradually realized true multi-touch functions. A single-layer capacitive touch panel using mutual-capacitance scanning is shown in FIG. 10, which includes a plurality of electrode groups 70 arranged side by side in the vertical direction, each electrode group 70 includes a sensing electrode 71 and a plurality of driving electrodes 72. The sensing electrodes 71 are elongated, and the driving electrodes 72 are arranged equidistantly and inductively. The electrodes 71 are parallel to each other. The single-layer capacitive touch panel adopts mutual capacitance scanning, that is, each driving electrode 72 transmits a driving signal, and the sensing electrode 71 receives the sensing signal. According to the foregoing technique, no matter two or more objects respectively falling on different electrode groups 70 or falling on the same electrode group 70, the sensing quantity change on the corresponding sensing electrode 71 can be read out, and then the single layer capacitive touch Multi-object touch is realized on the control panel.

In order to further improve the efficiency and accuracy of interpretation, another single-layer capacitive touch panel using mutual-capacitance scanning has been introduced. As shown in FIG. 11, it is also provided with a plurality of substrates (not shown). Electrode groups 80 arranged side by side in the same direction, each electrode group 80 having a plurality of electrode pairs 81 and a plurality of traces 82, each electrode pair 81 comprising a drive electrode and a sensing electrode (1T1R) parallel to the drive electrode The driving electrodes and the sensing electrodes of the respective electrode pairs 81 are respectively connected to the corresponding wirings 82. In the foregoing configuration, each of the electrode groups 80 is configured to transmit a stimulation signal from the driving electrodes of the respective electrode pairs 81, and the stimulation signals are sensed by the corresponding sensing electrodes. When an object touches the corresponding electrode pair, The amount of inductance of the sensing electrode is changed to judge the object. Since the driving signal is transmitted in a one-to-one manner by the driving electrode and the sensing electrode of the electrode pair 81, not only the multi-object touch can be realized, but also the accuracy of the interpretation can be improved.

It can be seen from the above that a single-layer capacitive touch panel can realize real multi-object touch under a single-layer architecture. However, due to the special layout of the electrode group of the single-layer capacitive touch panel, many peripheral designs are limited. For example, the wiring in the electrode group and the narrow frame design of the touch device housing are mutually exclusive. As shown in FIG. 11 above, the electrode group 80 of the single-layer capacitive touch panel is provided with a plurality of electrode pairs 81 arranged in a longitudinal direction, and the trace 82 of the electrode group 80 is located at the electrode pair 81 thereof. Between the electrode pairs 81 adjacent to the other electrode group 80, the electrode pair 81 is on the left side in the electrode group 80, the trace 82 is on the right side, and the trace 82 of the rightmost electrode group 80 is viewed from the drawing direction. At present, it is common practice to place the trace 82 outside the active area, that is, to allow the trace 82 to pass through the frame. However, if the trace 82 is passed through the border, in addition to restricting the design of the narrow bezel, There is a problem that the object F has a positional interpretation accuracy when it is close to the boundary. As shown in FIG. 12, when the trace 82 of the electrode group 80 at the boundary of the adjacent bezel 90 is located at the bezel 90, the electrode pair 81 is aligned. The boundary of the active area (also the boundary of the border 90), in this case When the object F falls at the boundary of the active area, its ideal coordinate interpretation position should be at point A, but the actual calculated position of the coordinate is at point B because the object F falls at the boundary of the active area. At the same time, it simultaneously contacts the electrode pair 81 of the rightmost electrode group 80 and the electrode pair 81' of the left adjacent electrode group 80', and the area of the electrode pair 81 contacting the rightmost electrode group 80 is larger than the left adjacent electrode group 80. 'The electrode pair 81' area (the area where the object F contacts the electrode group 80' contains the non-inductive trace 82'), in other words, the inductive amount of the object F to the electrode pair 81 will be greater than the counter electrode pair 81' The amount of induced inductance changes, causing the offset of the interpretation coordinates.

It can be seen from the above that there is a single-layer capacitive touch panel on the left and right sides of the frame layout design. If the frame space is used, it is not conducive to the narrow frame design, and the accuracy of the edge coordinate judgment is also affected. Therefore, the problem of the border routing of the capacitive touch panel needs to be further reviewed and a feasible solution is sought.

Therefore, one of the main purposes of the present invention is to provide a capacitive touch device that utilizes a sensing area of a pair of adjacent electrode pairs in a capacitive touch device to solve the problem of routing and edge resolution of a narrow frame touch device. Degree problem.

The main technical means for achieving the foregoing objective is that the capacitive touch device comprises: a substrate having a surface, the substrate surface having an active region; and a plurality of electrode groups arranged in parallel along a first direction a surface of the substrate and located in the active area, the plurality of electrode sets respectively comprising a plurality of electrode pairs arranged in a second direction and a plurality of traces respectively connecting the respective electrode pairs; wherein: the plurality of electrode groups are adjacent to One or more electrode pairs at the boundary of the active region have a first sensing area, and the other electrode pairs have a second sensing area, wherein the second sensing area is greater than the first sensing area.

Another main technical means for achieving the foregoing objective is that the capacitive touch device comprises: a protective layer comprising a transparent visible area and a non-transparent non-visible area; a substrate located below the protective layer, The surface of the substrate has an active area and overlaps the visible area of the protective layer; a plurality of first sensing units are arranged in a matrix in the active area of the substrate; and a plurality of second sensing units are arranged along a first direction On the substrate, the plurality of second sensing units are located between the plurality of first sensing units and a first boundary of the active area, and the sensing area of the second sensing unit is smaller than the sensing area of the first sensing unit; And a plurality of traces respectively connected to the plurality of second sensing units, wherein the combination of the plurality of traces and the plurality of second sensing units are located in the active area and adjacent to the first boundary of the active area.

A further main technical means for achieving the foregoing objective is that the capacitive touch device comprises: a substrate having an active region; and a second electrode layer formed on the substrate, each electrode layer comprising a plurality of electrodes And the plurality of electrodes are correspondingly located in the active area of the substrate; and the plurality of traces are respectively connected to the plurality of electrodes; wherein in the at least one electrode layer of the two electrode layers, the electrodes adjacent to the boundary of the active region have a first sensing area, the other electrode has a second sensing area, and the second sensing area is greater than the first sensing area to form a redundancy between the boundary of the active area and the electrodes having the first sensing area The remaining space is for accommodating the connecting lines of the electrodes having the first sensing area.

The above technology improves the accuracy of edge coordinate interpretation by reducing the sensing area of the electrode adjacent to the boundary of the active area, the electrode pair or the sensing unit on the touch device to match the sensing amount of the electrode pair adjacent to the boundary electrode pair; In addition, the redundant space remaining in the sensing area of the electrode, the electrode pair or the sensing unit is also used to accommodate the routing, so as to solve the problem that the design of the narrow frame caused by the frame space is limited.

Referring to FIG. 1 , a plurality of electrode groups 20 are formed on a substrate 10 . In this embodiment, the substrate 10 has a surface having an active surface. AA (Active Area), the plurality of electrode groups 20 are formed on the surface of the substrate 10 and located in the active area AA. The electrode groups 20 are in the same plane, that is, the embodiment is in a single layer capacitive type. Application on the touch device.

The plurality of electrode groups 20 are elongated and arranged side by side in a first direction X parallel to the surface of the substrate 10. Each electrode group 20 includes a plurality of electrode pairs 21 and a plurality respectively arranged along a second direction Y. The plurality of traces 22 of the electrode pairs 21 are connected; as shown in FIG. 2, in the embodiment, each of the electrode pairs 21 includes a driving electrode 211 and a sensing electrode 212 (1T1R) forming a coupling capacitor (for convenience of identification). The sensing electrode 212 in the figure is indicated by a broken line, wherein the driving electrode 211 is a fishbone hollow pattern composed of a meandering continuous winding, and includes a transverse arm and a plurality of transverse ribs intersecting the straight arm. The sensing electrode 212 is also formed by a meandering continuous winding, which is wound around the straight arm and the transverse rib of the driving electrode 211 in parallel. The driving electrode 211 and the sensing electrode 212 are respectively connected to different wires 22. Further, the sensing electrodes 212 of the electrode pairs 21 in the same electrode group 20 are electrically connected to each other.

As described above, the plurality of electrode pairs 21 in each electrode group 20 are arranged in the second direction Y, and the traces 22 are parallel to the plurality of electrode pairs 21 in the first direction X. In this embodiment, The plurality of electrode pairs 21 are located on the left side of the figure, and the traces 22 are located on the right side of the figure. The main feature of the present invention is that the sensing area of the electrode pair 21 adjacent to the boundary of the active area AA is reduced, so that the electrode pair 21A adjacent to the boundary of the active area AA has a first sensing area, and the other does not function. The electrode pair 21 adjacent to the area AA has a second sensing area, wherein the second sensing area is larger than the first sensing area, and the first sensing area and the second sensing area may be various ratios, such as 1:1~5. Preferably, it is 1:2, that is, the first sensing area is 1/2 of the second sensing area.

In this embodiment, the electrode pair 21A having the first sensing area refers to all the electrode pairs 21A disposed in the second direction Y sequence in the same electrode group 20' adjacent to the boundary of the active area AA (see FIG. 3). The electrode group 20') adjacent to the right boundary of the active area AA is shown, and the electrode pair 21A is reduced by half the sensing area of the other electrode pair 21, in the present embodiment, the electrode group 20' is The electrode pair 21A width W1 is reduced by half compared with the electrode pair 21 width W2 of the left adjacent electrode group 20, and in terms of shape, the right half of the driving electrode 211 is deleted, and the driving electrode 211 is wound around the driving electrode 211. The surrounding sensing electrodes 212 also relatively narrow their range.

Since all of the electrode pairs 21A in the same electrode group 20' adjacent to the boundary of the active area AA have their sensing areas reduced, a space between the electrode group 20' and the boundary of the active area AA is vacated. a narrow redundant space parallel to the direction Y, the redundant space is adapted to accommodate the trace 22 corresponding to the electrode group 20' adjacent to the boundary of the active area AA, in other words, the trace 22 of the electrode set 20' will be located Within the range of the active area AA, the narrow bezel design of the touch device housing can be facilitated because the frame space of the touch device housing can be used without or reduced.

In addition to providing redundant space for the traces 22 to solve the narrow bezel design problem, it also helps to improve the accuracy of the edge coordinates. Referring to FIG. 4, when the object F falls at the boundary of the action area AA, the ideal coordinate interpretation position is at point A, and the coordinate position read out is actually point B, but point B is very close to point A, that is, There is a significant increase in accuracy. The principle is that when the object F falls at the boundary of the active area AA, it also contacts the electrode group 20' adjacent to the boundary of the active area AA and the other electrode adjacent to the left side of the electrode group 20'. Group 20, although the area in which the adjacent electrode group 20 on the left side is contacted includes the trace 22 and the induced area of the electrode pair 21 is reduced, but the electrode group 20' adjacent to the boundary of the active area AA is reduced. The area of the electrode pair 21A matches the sensing area of the adjacent electrode group 20 whose electrode pair 21 is reduced in contact, so that the coordinate position of the interpretation can be close to the ideal coordinate position, thereby improving the accuracy of the interpretation.

In the foregoing FIG. 3, the present invention is directed to the electrode pair 21A having the first sensing area referred to as all the electrode pairs 21A in the same electrode group 20' adjacent to the right boundary of the active area AA; As shown in FIG. 5, all of the electrode pairs 21A in the same electrode group 20" adjacent to the left boundary of the active area AA are also referred to as electrode pairs 21A having a first sensing area. The electrode group 20' shown in FIG. Similarly, all the electrode pairs 21A adjacent to the left boundary of the active area AA have the right half of the driving electrode 211 cut out, and the width thereof is reduced by half, and the sensing electrode 212 wound around the driving electrode 211 is also relatively narrowed. The redundant space generated by reducing the sensing area is located between the electrode pair 21A and the left boundary of the active area AA. In this embodiment, the electrode group 20" is provided with a plurality of spaces in the redundant space. Induction line 23. The foregoing redundant space may be formed between the pair of electrodes 21A having the first sensing area and the boundary of the active area AA, and may also be formed between the electrode pair 21A and the trace 22 in the electrode group 20" (in the figure) Not shown, the redundant space is still used for setting a plurality of empty sensing lines. In this embodiment, the electrode pair 21A of the electrode group 20" is aligned with the boundary of the active area AA, and the sensing is reduced. The redundant space generated by the area is located between the pair of electrodes 21A and its corresponding trace 22, that is, the electrode pair 21A of the electrode group 20" and the corresponding trace 22 are not adjacent to each other, but are narrowly redundant. Separated by spaces, the redundant space is provided for a plurality of empty sensing lines 23.

In the foregoing embodiment, the electrode groups 20', 20" adjacent to the left and/or right boundaries of the active area AA are provided with the electrode pair 21A of the first sensing area; in addition, the electrode groups may be made 20, 20', 20" electrode pair 21A adjacent to the upper boundary and/or lower boundary of the active area AA is a first sensing area, as shown in FIG. 6, the bottom end of each electrode group 20, 20' is adjacent to The length L1 of one electrode pair 21A at the lower boundary of the active area AA is shortened by half compared with the length L2 of the other electrode pair 21, 21A adjacent to the upper end of the same electrode group 20, 20', and has the first sensing area. A redundant space is formed between the electrode pair 21A having the first sensing area and the lower boundary of the active area AA, and a plurality of empty sensing lines 23 are provided in the redundant space. As shown in FIG. 7, the length L1 of one electrode pair 21A whose top end of each electrode group 20, 20' is adjacent to the upper boundary of the active area AA is adjacent to the other electrode of the lower end of the same electrode group 20, 20'. The length L2 of 21, 21A is shortened by half, and a redundant space is formed between the electrode pair 21A having the first sensing area and the upper boundary of the active area AA. In this embodiment, the redundant space is provided for A plurality of empty sensing lines 23 are provided, thereby allowing the user to have uniform and symmetrical visual effects. In addition to this, it is also possible for the traces 22 to pass (for example, the portion of the upper end of each of the traces 22 that is bent in the horizontal direction).

In the foregoing embodiment, the electrode pairs 21, 21A of the electrode groups 20, 20', 20" respectively include a driving electrode 211 and a sensing electrode 212. It is understood by those of ordinary skill in the art that the present invention is also applicable. When the electrode pair 21, 21A is composed of one driving electrode 211 and two sensing electrodes 212A, 212B (1T2R), as shown in FIG. 8, the driving electrode 211 simultaneously forms a coupling with the two sensing electrodes 212A, 212B. a capacitor, the driving electrode 211 and the sensing electrodes 212A, 212B are respectively connected to the different traces 22. In the embodiment, the two sensing electrodes 212A, 212B are arranged along the second direction Y, the two sensing The electrodes 212A and 212B are respectively disposed on the side of the driving electrode 211 and have the same pitch with the driving electrode 211.

As in the previous embodiment, in the present embodiment, the electrode pair 21A adjacent to the boundary of the active area AA is provided with the first sensing area, and the other is not adjacent to the boundary of the active area AA. The adjacent electrode pair 21 has the second sensing area, and the electrode pair 21A has a first sensing area shortened by its length or width, and the redundant space generated by shortening the sensing area is used to set the routing 22 and / or empty induction line (not shown).

The action area AA described above is used for sensing the contact and operation of the object. The invention can be applied to a device with a touch screen, such as a mobile phone, or a tablet computer. The touch device includes a protective layer disposed above the substrate, and the protective layer includes a transparent visible area and a non-transparent non-visible area. The non-visible area is at the edge of the protective layer. The active area of the substrate overlaps with the visible area of the protective layer, so that the user can perform a touch operation in the visible area.

According to the single-layer touch device of the present invention, it can be understood that the active area on the substrate includes a plurality of first sensing units arranged in a matrix in the active area, and the plurality of second sensing units are arranged in the first direction. The plurality of second sensing units are located between the plurality of first sensing units and a first boundary of the active area, and the sensing area of the second sensing unit is smaller than the sensing area of the first sensing unit. A plurality of traces are respectively connected to the plurality of second sensing units, and the combination of the plurality of traces and the plurality of second sensing units are located in the active area and adjacent to the first boundary of the active area. The so-called first and second sensing units may be a combination of a driving electrode and a sensing electrode as described above, or a single sensing electrode.

The above description can be used to understand the specific structure and principle of the present invention applied to a single-layer capacitive touch device; and the same technical principle can also be applied to a double-layer capacitive touch device, and a possible embodiment is shown in FIG. The main substrate 30 has an active area AA, and two electrode layers 31 and 32 and a plurality of traces 33 and 34 are formed. The two electrode layers 31 and 32 respectively include a plurality of electrodes 310 and 320. The substrate 320 is located in the active area AA of the substrate 30, and is connected to the corresponding traces 33 and 34 respectively. In the embodiment, an X-axis electrode layer 31 and a Y-axis electrode layer 32 are formed on the substrate 30. The shaft electrode layer 31 includes a plurality of X-axis electrodes 310 connected in a series in the X-axis direction, the electrode strings are parallel to each other, and the Y-axis electrode layer 32 includes a plurality of Y-axis electrodes 320, and the Y-axis electrodes 320 is connected in series in the Y-axis direction, and the electrode strings are parallel to each other. In the present invention, the X-axis electrode 310A and the Y-axis electrode 320A adjacent to the boundary of the active region AA in the X-axis electrode layer 31 and/or the Y-axis electrode layer 32 have a first sensing area, and the other X-axis electrodes 310. The Y-axis electrode 320 has a second sensing area, and the second sensing area is greater than the first sensing area.

The X-axis electrode 310A and the Y-axis electrode 320A having the first sensing area form a redundant space between the active area and the boundary of the active area AA, and the redundant space is used to accommodate the The first sensing area of the X-axis electrode 310A and the Y-axis electrode 320A are connected to the wirings 33 and 34. As shown in the figure, after the X-axis electrodes 310 are reduced in their sensing area, the redundant space is formed between the X-axis electrodes 310 and the right boundary of the active area AA, and the correspondingly connected traces 33 are accommodated therebetween; After the Y-axis electrode 320 is reduced in its sensing area, the redundant space is formed between the Y-axis electrode 320 and the upper boundary of the active area AA, so that the correspondingly connected trace 34 is accommodated in the redundant space.

It can be seen from the above that the present invention mainly solves the problem that the sensing area of the electrode or the electrode pair adjacent to the boundary of the active area of the capacitive touch device is shortened, thereby forming a redundant space for accommodating the wiring and/or the empty sensing line, thereby solving the problem. The use of the frame space to accommodate the problem of the limitation of the narrow frame design by the traces can improve the accuracy of the edge coordinate interpretation.

While the invention has been described in connection with the preferred embodiments described above, it is not intended to limit the scope of the invention. The technical scope of the invention is protected, and therefore the scope of the invention is defined by the scope of the appended claims.

10‧‧‧Substrate
20, 20', 20" ‧ ‧ electrode group
21, 21A‧‧‧ electrode pairs
211‧‧‧ drive electrode
212,212A, 212B‧‧‧Induction electrodes
22‧‧‧Wiring
23‧‧‧Air induction line
30‧‧‧Substrate
31‧‧‧X-axis electrode layer
310,310A‧‧‧X-axis electrode
32‧‧‧Y-axis electrode layer
320,320A‧‧‧Y-axis electrode
33,34‧‧‧Wiring
70‧‧‧electrode group
71‧‧‧ drive electrodes
72‧‧‧Induction electrodes
80‧‧‧electrode group
81‧‧‧electrode pair
82‧‧‧Wiring

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a plan view showing an embodiment of the present invention. Fig. 2 is an enlarged view of an electrode pair according to an embodiment of the present invention. Figure 3 is a partial plan view (right edge of the active area) in accordance with an embodiment of the present invention. FIG. 4 is a schematic diagram showing the principle of improving the accuracy of edge coordinate interpretation according to an embodiment of the present invention. Figure 5 is still another partial plan view (left boundary of the active area) in accordance with an embodiment of the present invention. Figure 6 is a further partial plan view (lower boundary of the active area) in accordance with an embodiment of the present invention. Figure 7 is another partial plan view (upper boundary of the active area) in accordance with an embodiment of the present invention. Figure 8 is a plan view of still another embodiment of the present invention. Figure 9 is a plan view of still another embodiment of the present invention. Figure 10 is a plan view of a known single layer capacitive touch panel. Figure 11 is a plan view of another known single layer capacitive touch panel. FIG. 12 is a schematic diagram of another known single-layer capacitive touch panel edge coordinate interpretation offset.

10‧‧‧Substrate

20,20’‧‧‧electrode group

21, 21A‧‧‧ electrode pairs

22‧‧‧Wiring

Claims (18)

A capacitive touch device includes: a substrate having a surface, the substrate surface having an active region; and a plurality of electrode groups arranged in parallel along a first direction on the surface of the substrate and located in the active region The electrode group includes a plurality of electrode pairs arranged in a second direction and a plurality of wires respectively connecting the electrode pairs; wherein: one or more electrode pairs adjacent to the boundary of the active region of the plurality of electrode groups have a first Outside the sensing area, the other electrode pairs have a second sensing area, wherein the second sensing area is greater than the first sensing area. The capacitive touch device of claim 1, wherein a pair of electrodes having the first sensing area and a boundary of the active area form a redundant space for accommodating the electrode pair having the first sensing area Corresponding to the connection line. The capacitive touch device of claim 1, wherein a redundant space is formed between the electrode pair having the first sensing area and the boundary of the active area for receiving a plurality of empty sensing lines. The capacitive touch device of claim 1, wherein a pair of electrodes having the first sensing area and a corresponding row of the same electrode group form a redundant space, and the redundant space is provided with a plurality of spaces. Induction line. The capacitive touch device of claim 1, wherein the second sensing area is greater than the first sensing area, wherein the width of the pair of electrodes having the second sensing area is greater than the width of the pair of electrodes having the second sensing area. . The capacitive touch device of claim 1, wherein the second sensing area is greater than the first sensing area, wherein the length of the pair of electrodes having the second sensing area is greater than the length of the pair of electrodes having the third sensing area. . The capacitive touch device according to any one of claims 1 to 4, wherein the electrode pair having the first sensing area is arranged in the second direction sequence in the same electrode group adjacent to the boundary of the active area. Multiple electrode pairs. The capacitive touch device of claim 2 or 3, wherein the electrode pair having the first sensing area refers to one or more electrode pairs in the plurality of electrode groups adjacent to the boundary of the active region. The capacitive touch device of any one of claims 1 to 4, wherein each electrode pair of each electrode group includes a driving electrode and a sensing electrode, and a coupling capacitor is formed between the driving electrode and the sensing electrode. The driving electrode and the sensing electrode are respectively connected to the different traces. The capacitive touch device of claim 9, wherein the driving electrode of the pair of electrodes comprises a straight arm and a plurality of transverse ribs intersecting the straight arm at an angle, so that the driving electrode is in the shape of a fishbone, and the sensing electrode is surrounded by Around the straight arm and the transverse rib of the drive electrode. The capacitive touch device of claim 9, wherein each electrode pair of each electrode group comprises a driving electrode and two sensing electrodes, and the driving electrode simultaneously forms a coupling capacitance with the two sensing electrodes, the driving The electrodes and the sensing electrodes are respectively connected to the different traces. The capacitive touch device of claim 11, wherein the two sensing electrodes are arranged in the second direction, and the two sensing electrodes are respectively disposed on the driving electrode side and have the same relationship with the driving electrode. spacing. The capacitive touch device of claim 5 or 6, wherein the first sensing area is one-half of the second sensing area, wherein the electrode pair having the first sensing area is deleted in length or width Reduce the sensing area by half to form this redundant space. A capacitive touch device includes: a protective layer comprising a transparent visible area and a non-transparent non-visible area; a substrate under the protective layer, the substrate surface having an active area and the protective layer The plurality of first sensing units are arranged in a matrix in the active area of the substrate; the plurality of second sensing units are arranged on the substrate along a first direction, and the plurality of second sensing units are arranged Between the plurality of first sensing units and a first boundary of the active area, the sensing area of the second sensing unit is smaller than the sensing area of the first sensing unit; and the plurality of lines are respectively connected to the plurality of The second sensing unit, the combination of the plurality of traces and the plurality of second sensing units is located in the active area and adjacent to the first boundary of the active area. A capacitive touch device includes: a substrate having an active region; a second electrode layer formed on the substrate, each of the electrode layers including a plurality of electrodes, and the plurality of electrodes corresponding to the active region of the substrate And the plurality of wires are respectively connected to the plurality of electrodes; wherein in the at least one electrode layer of the two electrode layers, the electrodes adjacent to the boundary of the active region have a first sensing area, and the other electrodes have a first a second sensing area, and the second sensing area is larger than the first sensing area, so as to form a redundant space between the boundary of the active area and the electrodes having the first sensing area, and the first sensing area is configured to receive the first The wire connecting the electrodes of the sensing area. The capacitive touch device of claim 15, wherein the two electrode layers are an X-axis electrode layer and a Y-axis electrode layer, and the X-axis electrode layer comprises a plurality of X-axis electrodes, and the X-axis electrodes are at X. The axial directions are connected in series, and the electrode strings are arranged side by side in parallel; and the Y-axis electrode layer includes a plurality of Y-axis electrodes which are connected in a series in the Y-axis direction, and the electrode strings are parallel to each other. The capacitive touch device of claim 16, wherein the X-axis electrode adjacent to the boundary of the active region of the X-axis electrode layer has the first sensing area, and the other X-axis electrodes have the second sensing area. The capacitive touch device of claim 16 or 17, wherein the Y-axis electrode adjacent to the boundary of the active region of the Y-axis electrode layer has the first sensing area, and the other Y-axis electrodes have the second sensing area .