TWI436256B - Mutual capacitive touchpad and modular mutual capacitive touchpad - Google Patents

Description

Mutual capacitive touch panel and combined mutual capacitance touch panel

The present invention relates to a touch-sensitive input device, and more particularly to a touch input device using a mutual capacitance as an inductive device.

The touchpad is a touch sensing input device that is now widely used. According to the principle of touch sensing, the prior art touch panel includes a resistive touch panel, a capacitive touch panel, a surface infrared touch panel, and the like. Among them, the resistive touch panel has been popular for many years because of its low cost, easy implementation, and simple control. Recently, capacitive touch panels have been popularly welcomed by the public for their high light transmittance, wear resistance, environmental temperature resistance, environmental humidity resistance, long life, and advanced complex functions such as multi-touch.

The use of capacitance changes as a sensing principle has been around for a long time. In order for the touchpad to work effectively, a transparent capacitive sensing array is required. When the human body or a special touch device such as a stylus approaches the sensing electrode of the capacitor, the magnitude of the capacitance value detected by the sensing control circuit is changed, and according to the distribution of the capacitance value change in the touch region, it can be determined that the human body or the dedicated touch device is Touch the touch in the area. According to the manner in which the capacitor is formed, the prior art touch panel includes a self-capacitive touch panel and a mutual capacitive touch panel. The self-capacitive touch panel utilizes a change in capacitance value formed by the sensing electrode and the alternating current or direct current electrode as a touch sensing signal; the mutual capacitive touch panel utilizes a change in capacitance value formed between the two electrodes as a touch sensing The signal is sometimes referred to as a projected capacitor.

As shown in FIG. 11, the prior art mutual capacitive touch panel includes a touch plane 100 ' , a drive line 210 ' and a sense line 310 ' that are not in the same plane, and are sandwiched between the drive line 210 ' and the sense line 310 '. Between the media plane 910 ' . As shown in FIGS. 11-1 and 11-2, each of the driving lines 210 ' is parallel to each other, and the sensing lines 310 ' are parallel to each other, and the driving lines 210 ' and the sensing lines 310 ' vertically intersect in space. . The drive line 210 'is electrically connected to the excitation signal, the sensing line 310' is electrically connected to the sensor control circuit, so as to form a mutual capacitance between the drive line 210 'and the sensing line 310'. The mutual capacitance C formed at the intersection of the drive line 210 ' and the sense line 310 ' is the main capacitance data signal detected by the sensing control circuit. As shown in FIG. 11-3, the mutual capacitance C includes driving lines 210 'and the sensing lines 310' and the drive line capacitance CB between the bottom 210 'and the sensing line 310' between the top of the capacitance C _T, i.e., C=C _B +C _T . As shown in Figures 11-4, when the finger 150 ' contacts the touch plane 100 ' and is within the touch area, the finger 150 ' corresponds to an electrode above the sensing line 310 ' , changing the drive line 210 ' with The electric field between the tops of the sensing line 310 ' can be seen as the finger 150 ' sucking away the electric field lines from the top of the driving line 210 ' to the sensing line 310 ' , thereby causing the C _T to change, causing the mutual capacitance C to occur. Variety. The sensing control circuit detects a change in the mutual capacitance C within the entire touch area of the touch plane 100 ' to determine the position and intensity of the touched point within the touch area. Through reasonable design of the sensing control circuit, the sensing control circuit can simultaneously detect the distribution of multi-touch generated on the touch plane 100 ' , and realize the sensing multi-touch function. The proportion of the change in the C _T value in the mutual capacitance C when no touch occurs is referred to as the effective permittivity.

As shown in FIG. 11, when the prior art touch panel is touched, the capacitance CB between the driving line 210 ' and the bottom of the sensing line 310 ' is not affected by the touch, since the sensing line 310 ' bottom and the driving line 210 ' is right, so that the capacitance C _B accounts for a large proportion in the mutual capacitance C, so that the effective capacitance ratio is low. The effective permittivity of the prior art mutual-sensing touch panel can only reach about 30%, which results in low signal-to-noise ratio of the touch panel. It is necessary to design a complex sensing control circuit to accurately determine the human body or a dedicated touch device for the touch. The touch of the board increases the design and manufacturing cost of the touchpad.

The technical problem to be solved by the present invention is to avoid mutual deficiencies of the prior art and to propose a mutual capacitive touch panel and a combined mutual capacitance touch panel capable of greatly increasing the effective permittivity.

The technical problem of the present invention can be achieved by adopting the following technical solutions: designing and manufacturing a mutual capacitive touch panel, including a touch plane made of transparent insulating medium, a driving layer and a sensing layer covered by the touch plane And a plane of the capacitive medium sandwiched between the driving layer and the sensing layer by a transparent insulating medium, in particular, the driving layer comprises a flat driving electrode made of a transparent conductive material spaced apart in the same plane; The sensing layer includes flat sensing electrodes made of transparent conductive materials spaced apart in the same plane, and the sensing electrodes are distributed in the sensing layer and the gap regions of the driving electrodes in the driving layer are opposite each other. The driving electrode and the sensing electrode together fill the touch area of the touch plane; the driving electrode is electrically connected to the excitation signal module of the touch panel peripheral, and the sensing electrode is The sensing control module of the touchpad peripheral is electrically connected.

In order to further increase the effective permittivity, the touch panel further includes a shielding layer; the shielding layer is disposed above or below the underlying layer of the driving layer and the sensing layer or nested within the layer; the shielding layer includes transparent a flat shield electrode made of a conductive material, and a shield electrode lead wire; each of the shield electrodes is opposite to a region occupied by each electrode in the upper layer of the driving layer and the sensing layer; the shield electrode is electrically suspended; or, by means of The shield electrode leads the wire, and all of the shield electrodes are grounded or electrically connected to the DC source of the touchpad peripheral.

In order to further increase the effective permittivity, the touch panel further includes a sub-electrode layer; the sub-electrode layer is disposed above or below the upper layer of the driving layer and the sensing layer or nested within the layer; the sub-electrode The layer includes planar sub-electrodes made of a transparent conductive material, each of which faces the area occupied by the electrodes in the lower layer of the drive layer and the sensing layer.

The mutual capacitive touch panel further includes a driving electrode connection line and a sensing electrode connection line made of a transparent conductive material, and a driving electrode lead-out wire and a sensing electrode lead-out wire. The driving electrodes are connected in series by means of driving electrode connection lines, and the positional relationship between the driving electrode connection lines in the driving layer includes collinear and parallel; the sensing electrodes are grouped together by means of sensing electrode connection lines. The positional relationship between the sensing electrode connection lines in the sensing layer includes collinear and parallel; the driving electrode connection line and the sensing electrode connection line are perpendicular to each other. Each driving electrode group is electrically connected to the excitation signal module of the touch panel peripheral by the driving electrode lead line; each sensing electrode group is electrically connected to the sensing control module of the touch panel peripheral by the sensing electrode lead line Pick up.

The shape of the driving electrode and the sensing electrode may be as follows: each of the driving electrodes is a rectangular electrode of the same size; the sensing electrodes are rectangular electrodes of the same size; or each of the driving electrodes is a diamond electrode of the same size; The sensing electrodes are diamond-shaped electrodes of the same size; or each of the driving electrodes is a hexagonal electrode of the same size; the sensing electrodes are diamond-shaped electrodes of the same size.

The invention also provides a combined mutual capacitance touch panel based on the mutual capacitive touch panel, which can be realized by adopting the following technical solutions: Designing and manufacturing a combined mutual capacitance touch panel, comprising a touch panel made of transparent insulating medium, and particularly comprising at least two mutual capacitance touch units closely arranged by the touch panel, the mutual capacitance touch The units together fill the touch area of the touch panel. The mutual capacitance touch unit includes a driving layer and a sensing layer, and a plane of a capacitive medium made of a transparent insulating medium sandwiched between the driving layer and the sensing layer. The driving layer comprises a flat driving electrode made of a transparent conductive material which is spaced apart in the same plane; the sensing layer comprises a flat sensing electrode made of a transparent conductive material in the same plane, and each of the sensing electrodes is distributed In the region of the sensing layer and the gap region between the driving electrodes in the driving layer, the driving electrode and the sensing electrode together fill the touch region of the mutual capacitance touch unit. The driving electrode is electrically connected to the excitation signal module of the mutual capacitance touch panel of the combined mutual capacitance touch panel peripheral, and the sensing electrode and the combined mutual capacitance touch panel peripheral correspond to the transmission The sensing control module of the mutual capacitance touch unit where the sensing electrodes are located is electrically connected.

The combined mutual capacitance touch panel further includes a shield connection line made of a transparent conductive material, and a shield layer lead-out wire. The mutual capacitance touch unit further includes a shielding layer disposed above or below the lower layer of the driving layer and the sensing layer or nested within the layer; the shielding layer comprises a flat plate made of a transparent conductive material The shielding electrode and the shielding electrode lead-out wire; each of the shielding electrodes is opposite to a region occupied by each electrode in the upper layer of the driving layer and the sensing layer. The shielding electrode is electrically suspended; or the shielding layers of the mutual capacitance touch unit are electrically connected together by the shielding layer connection line, and the lead wire is grounded through the shielding layer or the DC source of the peripheral component of the combined mutual capacitance touch panel Electrically connected; or alternatively, the lead wires are led out by the shield electrodes, and the respective shield electrodes of the mutual capacitance touch unit are grounded or electrically connected to a DC source of the combined mutual capacitance touch panel peripheral.

The mutual capacitance touch unit further includes a sub-electrode layer disposed above or below the upper layer of the driving layer and the sensing layer or nested within the layer; the sub-electrode layer includes a transparent conductive material The prepared plate sub-electrodes are each facing the region occupied by the electrodes in the lower layer of the driving layer and the sensing layer.

Compared with the prior art, the technical effect of the "mutual capacitance touch panel and the combined mutual capacitance touch panel" of the present invention is that the spatial position of the driving electrode and the sensing electrode is not in a positive relationship, and the driving electrode and the sensing electrode are The capacitance C _B formed between the bottoms is greatly reduced, and the ratio of the capacitance C _T formed between the driving electrode and the top of the sensing electrode in the mutual capacitance C is increased, thereby improving the change of the C _T caused by the touch sensing. The ratio of the mutual capacitance C in the untouched manner effectively increases the effective permittivity of the mutual capacitive touch panel; the shielding electrode and the secondary electrode can improve the electric field between the driving electrode and the sensing electrode, so that the mutual capacitance C The capacitance C _B is smaller, the capacitance C _{T is} larger, and the effective permittivity of the mutual capacitive touch panel is further improved; the secondary electrode can also make the transmittance of the mutual capacitive touch panel tend to be uniform. The performance of the mutual-capacitive touch panel is improved. In addition, the combined mutual-capacitance touch panel proposes a structure of a large-area touch panel, which avoids excessive resistance caused by excessively connected driving electrodes or sensing electrodes. Bandwidth reduced mutual capacitance path problem.

The embodiments are further described in detail below with reference to the embodiments shown in the drawings.

The present invention relates to a mutual capacitive touch panel for covering a surface of a display screen of a graphic or image display device, and controlling the content displayed by the graphic or image display device through a peripheral control device. As shown in FIGS. 1 to 7, the mutual capacitive touch panel includes a touch plane 100 made of a transparent insulating medium, a driving layer 200 and a sensing layer 300 covered by the touch plane 100, and a clip-on layer. A capacitive dielectric plane 910 made of a transparent insulating medium between the driving layer 200 and the sensing layer 300. In addition, a protective plane 120 made of a transparent insulating material may be provided, the driving layer 200, the sensing layer 300 and the capacitive dielectric plane 910 being disposed between the touch plane 100 and the protective plane 120, the protective plane 120 and the graphic or The display screen of the image display device is in contact.

The driving layer 200 of the present invention includes the same distribution in the same plane. a flat driving electrode 210 made of a transparent conductive material; the sensing layer 300 includes flat sensing electrodes 310 made of a transparent conductive material spaced apart in the same plane, and the sensing electrodes 310 are distributed in the sensing layer 300. In a region facing the gap region between the driving electrodes 210 in the driving layer 200, the driving electrode 210 and the sensing electrode 310 are filled together to fill the touch region 110 of the touch plane 100. The driving electrode 210 is electrically connected to the excitation signal module 600 of the touch panel peripheral, and the sensing electrode 310 is electrically connected to the sensing control module 700 of the touch panel peripheral.

The driving electrode 210 and the sensing electrode 310 of the mutual capacitive touch panel of the present invention do not face each other. Therefore, the capacitance C _B formed between the driving electrode 210 and the bottom of the sensing electrode 310 of the present invention is higher than that of the prior art. The capacitance C _B formed between the driving line 210 ' and the bottom of the sensing line 310 ' is small, so that the capacitance C _B in the present invention has a small proportion in the mutual capacitance C, which improves the effective permittivity of the mutual capacitance C of the present invention.

The shape of the driving electrode 210 and the sensing electrode 310 of the mutual capacitive touch panel of the present invention and their connection distribution in the respective driving layers 200 and the sensing layer 300 can be various, and the present invention is applicable to the first embodiment. To the seventh embodiment, several shapes and connection profiles suitable for application and practice have been proposed.

The mutual capacitive touch panel of each embodiment of the present invention adopts the following technical solutions: the mutual capacitive touch panel further includes a driving electrode connection line 220 and a sensing electrode connection line 320 made of a transparent conductive material, and driving The electrode lead wire 230 and the sensing electrode lead wire 330; the driving electrode 210 is grouped and connected in series by the driving electrode connecting line 220, and each of the driving electrodes The positional relationship between the connecting lines 220 in the driving layer 200 includes collinear and parallel; the sensing electrodes 310 are grouped together in series by the sensing electrode connecting lines 320, and the sensing electrode connecting lines 320 are at the sensing layer. The positional relationship between each other includes collinearity and parallelism; the driving electrode connection line 220 and the sensing electrode connection line 320 are perpendicular to each other; and the driving electrode group 240 is excited by the driving electrode lead-out line 230 and the touch panel peripheral. The module 600 is electrically connected; each sensing electrode group 340 is electrically connected to the sensing control module 700 of the touch panel peripheral via the sensing electrode lead line 330. As shown in FIG. 1 to FIG. 7 , the positional relationship between the driving electrode connection line 220 and the sensing electrode connection line 320 of the embodiments of the present invention is both collinear and parallel, that is, each driving electrode in the driving electrode group 240. The geometric center of 210 is on the same line as each of the driving electrode connection lines 220, and the respective lines of the driving electrode connection lines 220 of the driving electrode group 240 are parallel to each other; the geometric center of each sensing electrode 310 in the sensing electrode group 340 And the sensing electrode connection lines 320 are on the same straight line, and the respective lines of the sensing electrode connection lines 320 of the sensing electrode group 340 are parallel to each other; that is, for the driving electrode connection lines 220 in the driving layer 200 and in the transmission In the sensing electrode connection line 320 in the sensing layer 300, the positional relationship of the electrode connection lines in the electrode group is collinear, and the positional relationship of the electrode connection lines between the electrode groups is parallel.

In the first embodiment of the present invention, as shown in FIG. 1, each of the driving electrodes 210 is a rectangular driving electrode 211. In this embodiment, there are 25 rectangular driving electrodes 211; each of the sensing electrodes 310 is a rectangular sensing electrode 311. In the present embodiment, there are 36 rectangular sensing electrodes 311.

As shown in FIG. 1-1, the rectangular sensing electrode 311 passes through the sensing electrode. The connecting lines 320 are grouped into a group of six sensing electrode groups 340, and the geometric centers of the rectangular sensing electrodes 311 in each of the sensing electrode groups 340 and the rectangular sensing electrodes 310 connecting lines 320 are on the same line, and each The lines in which the sensing electrode connection lines 320 in the sensing electrode group 340 are located are parallel to each other. Each sensing electrode group 340 is electrically connected to the sensing control module 700 of the touch panel peripheral via the sensing electrode lead line 330.

As shown in FIG. 1-2, the rectangular driving electrodes 211 are grouped in series through the driving electrode connection lines 220 into five groups of driving electrode groups 240, and the geometric centers and driving directions of the rectangular driving electrodes 211 in each group of driving electrode groups 240 are shown. The electrode connection lines 220 are on the same straight line, and the straight lines in which the drive electrode connection lines 220 in the respective drive electrode groups 240 are located are parallel to each other. Each of the driving electrode groups 240 is electrically connected to the excitation signal module 600 of the touch panel peripheral via the driving electrode lead wires 230.

As shown in FIG. 1-3, each of the rectangular sensing electrodes 311 is distributed in a region of the sensing layer 300 opposite to the gap region between the rectangular driving electrodes 211 of the driving layer 200, and the rectangular driving electrode is arranged. The 211 and the sensing electrode 311 together fill the touch area 110 of the touch panel. The driving electrode connection line 220 and the sensing electrode connection line 320 are perpendicular to each other.

As shown in FIGS. 1-3 and 1-4, the area occupied by the rectangular sensing electrode 311 is complementary to the area occupied by the rectangular driving electrode 211 in the entire touch region 110, so that the rectangular sensing electrode 311 and the rectangular driving electrode 211 will not have a correct positional relationship.

For shown in FIG 1-4 O _{1:00, 1:00} when no touch to the O, the electric field distribution in the case of this _one point O as shown in FIG. 1-5; and when the finger 150 touches _one point O on the The electric field distribution at point O ₁ is shown in Figures 1-6. Since the bottom of the rectangular sensing electrode 311 does not have the rectangular driving electrode 211, the capacitance of the capacitor C _B formed between the bottom of the rectangular sensing electrode 311 and the rectangular driving electrode 211 is greatly reduced compared with the prior art, that is, the rectangular sensing The capacitance C _B formed between the bottom of the electrode 311 and the rectangular driving electrode 211 is greatly reduced in the mutual capacitance C of the O ₁ point, thereby effectively increasing the effective permittivity of the mutual capacitance C of the mutual capacitive touch panel.

In the second embodiment of the present invention, as shown in FIG. 2, the driving layer 200 and the sensing layer 300 are identical to the first embodiment except that the shielding layer 400 is added. The shielding layer 400 is disposed above or below the underlying layer of the driving layer 200 and the sensing layer 300 or nested within the layer; the shielding layer 400 includes a flat shielding electrode 410 made of a transparent conductive material, each of which The shield electrode 410 faces the area occupied by the electrodes in the upper layer of the driving layer 200 and the sensing layer 300.

In this embodiment, the sensing layer 300 is located above the driving layer 200. Therefore, as shown in FIG. 2-1, each of the shielding electrodes 410 is distributed in the shielding layer 400 and directly opposite to the sensing layer 300. The area occupied by the sensing electrode 310 is connected to the six shielding electrodes 410. In other words, the shielding electrode 410 is distributed in the shielding layer 400 and the gap region between the driving electrodes 210 of the driving layer 200 is opposite to each other. Area.

As shown in FIG. 2-2, the area occupied by the shield electrode 410 is complementary to the rectangular driving electrode 211. In this embodiment, the shielding layer 400 and the driving layer 200 are nested together, as shown in FIG. 2-3. That is, the shield layer 400 is in the same layer as the drive layer 200.

For the O ₂ point shown in Figure 2-3, when there is no O ₂ point touch, the electric field distribution of the O ₂ point is as shown in Figure 2-4; when the finger 150 touches the O ₂ point, the The electric field distribution at point O ₂ is shown in Figure 2-5. As can be seen from FIGS. 2-4 and 2-5, the shield electrode 410 functions to change the electric field at the bottom of the rectangular sensing electrode 311 so that the capacitance C _B formed between the bottom of the rectangular sensing electrode 311 and the rectangular driving electrode 211 Further, it can be understood that the shield electrode 410 sucks away a part of the electric field lines in the electric field at the bottom of the rectangular drive electrode 211 and the rectangular sensing electrode 311.

The shielding electrode 410 can be electrically suspended, that is, not electrically connected to any excitation signal, AC ground, and DC source of the mutual capacitive touch panel peripheral. The following scheme can also be adopted: as shown in FIG. 3, the shielding Layer 400 also includes a shield electrode lead wire 430 with which lead wire 430 is drawn, all of which are grounded or electrically coupled to a DC source 800 of the touchpad peripheral. In addition, in order to reduce the number of the shield electrode lead wires 430, one or two shield electrode lead wires 430 are generally used to electrically connect all the shield electrodes 410 to the DC source 800, or directly to the AC ground; and at the same time, the shield electrode lead wires are avoided as much as possible. 430 intersects the drive electrode lead wire 230 and the sense electrode lead wire 330. For the second embodiment of the present invention, FIG. 3 shows four cases to show the extraction of the four shield electrode lead lines 430, wherein the 3-1 and 3-2 illustrate the use of two shield electrodes. The lead wires 430 electrically connect all of the shield electrodes 410 to the AC ground or DC source 800; Figures 3-3 and 3-4 show that all of the shield electrodes 410 are electrically connected to the AC ground by a shield electrode lead wire 430. For other embodiments of the present invention having the shielding layer 400, the shielding electrode 410 is connected The ground connection or the DC source 800 of the touch panel peripheral can be electrically connected to any one of the four types shown in FIG. 4, or any other thing that makes the shield electrode lead-out line 430 and the driving electrode lead-out line 230 do not intersect each other in space. Other ways.

In the third embodiment of the present invention, as shown in FIG. 4, the driving layer 200 and the sensing layer 300 are identical to the first embodiment except that the sub-electrode layer 500 is added. The sub-electrode layer 500 is disposed above or below the upper layer of the driving layer 200 and the sensing layer 300 or nested within the layer; the sub-electrode layer 500 includes a planar sub-electrode 510 made of a transparent conductive material. Each of the sub-electrodes 510 is opposite to the area occupied by each electrode in the lower layer of the driving layer 200 and the sensing layer 300.

In this embodiment, the driving layer 200 is located below the sensing layer 300. Therefore, as shown in FIG. 4-1, each of the sub-electrodes 510 is opposite to the area occupied by each electrode in the driving layer 200. The sub-electrodes 510 are distributed in a region of the sub-electrode layer 500 that is directly opposite the region occupied by the driving electrodes 210 of the driving layer 200. In the region of the sub-electrode layer 500 facing a certain driving electrode 210 of the driving layer 200, a plurality of sub-electrodes 510 may be distributed to fill the region, or only one sub-electrode 510 may be used; in this embodiment, at the sub-electrode Sixteen sub-electrodes 510 having a small area are closely arranged in each of the layers 500 facing the driving electrodes 210. This structure can make the electric field distribution more uniform and facilitate touch sensing. Each of the sub-electrodes 510 are not connected to each other, and are not electrically connected to any signal excitation source, DC source or ground like ordinary electrodes, and are in an electrically floating state, and are therefore referred to as sub-electrodes or dummy cells.

As shown in FIG. 4-2, the area occupied by the sub-electrode 410 is complementary to the rectangular sensing electrode 311. In this embodiment, the sub-electrode layer 500 and the sensing layer 300 are nested together, as shown in FIG. 4-3. It is shown that the secondary electrode layer 500 is in the same layer as the sensing layer 300.

For the O ₃ point shown in Figure 4-3, when there is no O ₃ point touch, the electric field distribution of the O ₃ point is as shown in Figure 4-4; when the finger 150 touches the O ₃ point, The electric field distribution at point O ₃ is shown in Figure 5-5. As can be seen from FIGS. 4-4 and 4-5, the secondary electrode 510 functions to change the electric field at the top of the rectangular sensing electrode 311 so that the capacitance C _T formed between the top of the rectangular sensing electrode 311 and the rectangular driving electrode 211 Further increase to increase the range of variation of CT. It can be understood that the secondary electrode 510 increases the electric field lines in the electric field at the top of the rectangular driving electrode 211 and the rectangular sensing electrode 311; in addition, the secondary electrode 510 also functions to make the transmittance of the touch panel tend to be uniform.

According to a fourth embodiment of the present invention, as shown in FIG. 5, the driving layer 200 and the sensing layer 300 are identical to the first embodiment except that the same shielding layer 400 as that of the second embodiment is added and the third embodiment is added. The same secondary electrode layer 500.

As shown in FIG. 5-1, the shield layer 400 is nested with the driving layer 200, and the sub-electrode layer 500 is nested with the sensing layer 300.

For the O ₄ point shown in Figure 5-1, when there is no O ₄ point touch, the electric field distribution of the O ₄ point is as shown in Figure 5-2; when the finger 150 touches the O ₄ point, The electric field distribution at point ₄ is shown in Figure 5-3. It can be seen from FIGS. 6-2 and 5-3 that, under the joint action of the shield electrode 410 and the sub-electrode 510, the capacitance C _B formed between the bottom of the rectangular sensing electrode 311 and the rectangular driving electrode 211 is further reduced. The capacitance C _T formed between the top of the rectangular sensing electrode 311 and the rectangular driving electrode 211 is further increased, thereby further increasing the effective permittivity of the mutual capacitance C.

According to a fifth embodiment of the present invention, as shown in FIG. 6, the mutual capacitive touch panel includes a driving layer 200, a sensing layer 300, a shielding layer 400, and a sub-electrode layer 500.

As shown in FIG. 6-1, the driving layer 200 includes the driving electrodes 210, and each of the driving electrodes 210 is a diamond driving electrode 212. In this embodiment, 25 diamond driving electrodes 212 are disposed. The diamond drive electrodes 212 are grouped into five groups of drive electrode groups 240 through the drive electrode connection lines 220. The geometric centers of the diamond drive electrodes 212 in each set of drive electrode groups 240 and the drive electrode connection lines 220 are on the same line. Further, the straight lines in which the driving electrode connection lines 220 in the respective driving electrode groups 240 are located are parallel to each other. The case where each of the driving electrode groups 240 is electrically connected to the excitation signal module 600 of the touch panel peripheral is as in the first embodiment.

As shown in FIG. 6-2, the driving layer 300 includes sensing electrodes 310, and each sensing electrode 310 is a diamond sensing electrode 312. In this embodiment, 36 diamond sensing electrodes 312 are disposed. The diamond sensing electrodes 312 are grouped into six groups of sensing electrode groups 340 through the sensing electrode connection lines 320. The geometric centers of the diamond sensing electrodes 312 in each group of sensing electrode groups 340 are connected to the respective diamond sensing electrodes. The lines 320 are on the same line, and the lines in which the sensing electrode connection lines 320 in the respective sensing electrode groups 340 are located are parallel to each other. Each sensing electrode group 340 is electrically connected to the sensing control module 700 of the touch panel peripheral The situation is like the first embodiment.

Each of the diamond-shaped sensing electrodes 312 is distributed in a region of the sensing layer 300 opposite to the gap region formed between each of the diamond-shaped driving electrodes 212 in the driving layer 200, and the diamond-shaped driving electrode 212 and the diamond-shaped sensing electrode 312 are disposed together. The touch area 110 of the touch panel is filled. The driving electrode connection line 220 and the sensing electrode connection line 320 are perpendicular to each other.

In the fifth embodiment, the driving layer 200 is located above the sensing layer 300. As shown in FIG. 6-3, the shielding layer 400 includes a flat shielding electrode 410 made of a transparent conductive material. 410 is opposite to the area occupied by each of the diamond driving electrodes 212 in the driving layer 200, that is, the shielding electrode 410 is distributed in the shielding layer 400 and the gap region between the sensing electrodes 310 in the sensing layer 300 is opposite to each other. Within the area. The function of the shield layer 400 of this embodiment is substantially the same as that of the second embodiment and the fourth embodiment.

In the fifth embodiment, the driving layer 200 is located above the sensing layer 300. As shown in FIG. 6-4, the sub-electrode layer 500 includes spaced-apart planar sub-electrodes 510 made of a transparent conductive material. In this embodiment, the sub-electrode 510 has a diamond shape, and each of the sub-electrodes 510 is opposite to the area occupied by each of the diamond-shaped sensing electrodes 312 in the sensing layer 300, that is, each of the sub-electrodes 510 is distributed in the sub-electrode layer 500 and the driving layer. 200. The driving electrodes 210 are in a region facing each other with a gap region therebetween. In the region of the secondary electrode layer 500 that faces a certain sensing electrode 310 of the sensing layer 300, only one secondary electrode 510 is used. The function of the sub-electrode layer 500 of this embodiment is substantially the same as that of the third embodiment and the fourth embodiment.

The electrode layer 500 is located in the driving layer 200 as shown in FIGS. 6-5. The shield layer 400 is located below the sensing layer 300. The formation of the mutual capacitance C and the electric field distribution of the present embodiment are substantially the same as those of the fourth embodiment. Therefore, the present embodiment can effectively increase the effective permittivity of the mutual capacitance C.

According to a sixth embodiment of the present invention, as shown in FIG. 7, the mutual capacitive touch panel includes a driving layer 200, a sensing layer 300, a shielding layer 400, and a sub-electrode layer 500.

As shown in FIG. 7-1, the driving layer 200 includes the driving electrodes 210, and each of the driving electrodes 210 is a hexagonal driving electrode 213. In this embodiment, 16 hexagonal driving electrodes 213 are provided. The hexagonal driving electrodes 213 are grouped into four groups of driving electrode groups 240 through the driving electrode connection lines 220. The geometric centers of the respective hexagonal driving electrodes 213 and the driving electrode connection lines 220 in each group of driving electrode groups 240 are The straight lines on the same straight line and the drive electrode connection lines 220 in the respective drive electrode groups 240 are parallel to each other. The case where each of the driving electrode groups 240 is electrically connected to the excitation signal module 600 of the touch panel peripheral is as in the first embodiment.

As shown in FIG. 7-2, the sensing layer 300 includes sensing electrodes 310, and each sensing electrode 310 is a diamond sensing electrode 313. In this embodiment, 25 diamond sensing electrodes 313 are disposed. The diamond sensing electrodes 313 are grouped into five groups of sensing electrode groups 340 through the sensing electrode connection lines 320. The geometric centers of the diamond sensing electrodes 313 in each group of sensing electrode groups 340 are connected to the respective diamond sensing electrodes. The lines 320 are on the same line, and the lines in which the sensing electrode connection lines 320 in the respective sensing electrode groups 340 are located are parallel to each other. The sensing electrode module 340 is electrically connected to the sensing control module 700 of the touch panel peripheral as in the first embodiment.

The diamond-shaped sensing electrodes 313 are distributed in a region of the sensing layer 300 opposite to the gap region formed between the hexagonal driving electrodes 213 in the driving layer 200, and the hexagonal driving electrodes 213 and the diamond shape are arranged. The sensing electrodes 313 together fill the touch area 110 of the touch panel. The driving electrode connection line 220 and the sensing electrode connection line 320 are perpendicular to each other.

In the sixth embodiment, the driving layer 200 is located under the sensing layer 300. As shown in FIGS. 7-3, the shielding layer 400 includes a flat shielding electrode 410 made of a transparent conductive material, and the shielding electrodes 410 are respectively disposed. The regions occupied by the sensing electrodes 310 in the sensing layer 300, that is, the shielding electrodes 410 are distributed in the shielding layer 400 and the regions facing the gap regions of the driving electrodes 210 in the driving layer 200. . The function of the shield layer 400 of this embodiment is substantially the same as that of the second embodiment and the fourth embodiment.

In the sixth embodiment, the driving layer 200 is located under the sensing layer 300. As shown in FIGS. 7-4, the sub-electrode layer 500 includes spaced-apart planar sub-electrodes 510 made of a transparent conductive material. Each of the sub-electrodes 510 is opposite to the area occupied by the driving electrodes 210 of the driving layer 200, that is, the sub-electrodes 510 are distributed in the sub-electrode layer 500 and the gap regions between the sensing electrodes 310 of the sensing layer 300 are opposite to each other. Within the area. In this embodiment, the secondary electrode 510 has a triangular shape. In the region of the secondary electrode layer 500 opposite to the region occupied by one of the hexagonal driving electrodes 213 in the driving layer 200, six secondary electrodes 510 need to be disposed, as described above. This design reduces the area of the sub-electrode 510, making the electric field distribution more uniform, which is advantageous for touch sensing. The function of the sub-electrode layer 500 of this embodiment is substantially the same as that of the third embodiment and the fourth embodiment.

As shown in FIGS. 7-5, the sub-electrode layer 500 is located under the sensing layer 300, and the shielding layer 400 is located above the driving layer 200. The formation of the mutual capacitance C and the electric field distribution of the present embodiment are substantially the same as those of the fourth embodiment. Therefore, the present embodiment can effectively increase the effective permittivity of the mutual capacitance C.

The invention also relates to a combined mutual capacitance touch panel, which is suitable for a touch panel with a large area. When the area of the mutual capacitive touch panel is large, the number of driving electrodes and sensing electrodes needs to be increased. If the electrode group is too long, the resistance is too large, resulting in a decrease in the bandwidth of the mutual capacitance path, which brings circuit driving and sensing. inconvenient. In order to avoid the above situation, the present invention provides a combined mutual capacitance touch panel composed of a mutual capacitive touch panel.

As shown in FIGS. 8-10, the combined mutual capacitance touch panel includes a touch panel 1100 made of a transparent insulating medium, and in particular, at least two closely arranged by the touch panel 1100. The mutual capacitance touch unit 1000 is filled with the touch area of the touch panel 1100 together. The mutual capacitance touch unit 1000 is similar in structure to the mutual capacitance type touch panel of the present invention, and includes a driving layer 200 and a sensing layer 300, and a transparent insulating medium sandwiched between the driving layer 200 and the sensing layer 300. Capacitive dielectric plane 910. The driving layer 200 includes a flat driving electrode 210 made of a transparent conductive material and spaced apart in the same plane; the sensing layer 300 includes a flat sensing electrode 310 made of a transparent conductive material and spaced apart in the same plane. Each of the sensing electrodes 310 is distributed in a region of the sensing layer 300 opposite to the gap region between the driving electrodes 210 of the driving layer 200, so that the driving electrode 210 and the sensing electrode 310 together fill their mutual capacitance. Touch area 110 of touch unit 1000; the drive The movable electrode 210 is electrically connected to the excitation signal module 600 of the mutual capacitive touch unit 1000 corresponding to the driving electrode 210, and the sensing electrode 310 and the combined mutual capacitance touch panel peripheral The sensing control module 700 corresponding to the mutual capacitance touch unit 1000 where the sensing electrode 310 is located is electrically connected.

According to a seventh embodiment of the present invention, as shown in FIG. 8, the combined mutual capacitance touch panel includes four mutual capacitance touch units 1000, and the structure of the driving layer 200 and the sensing layer 300 of the mutual capacitance touch unit 1000 can be used. Any of the first to sixth embodiments. The combined mutual capacitance touch panel can separately collect the capacitance distribution data of each mutual capacitance touch unit 1000 through the control circuit of the peripheral device, and then accurately determine the touched condition on the entire touch panel 1100 through data summarization and analysis.

According to the eighth embodiment of the present invention, as shown in FIG. 9, a shielding layer 400 is added to each mutual capacitance touch unit 1000 based on the seventh embodiment. The shielding layer 400 is disposed on the driving layer 200 and the sensing layer 300. The middle layer below or below the lower layer or nested within the layer. The shielding layer 400 includes a flat shield electrode 410 made of a transparent conductive material, and a shield electrode lead-out wire 430; each of the shield electrodes 410 is opposite to each of the electrodes in the upper layer of the driving layer 200 and the sensing layer 300. Occupy the area. The shielding electrode 410 can be electrically suspended or connected to an alternating ground. In this embodiment, the conductive lead 430 is led out by the shielding electrode, and the shielding electrode 410 and the combined mutual capacitive touch panel peripheral of the mutual capacitive touch unit 1000 are respectively The DC source 800 is electrically connected.

A ninth embodiment of the present invention, as shown in FIG. 10, is based on the seventh embodiment The shield layer 400 and the sub-electrode layer 500 are added to each of the mutual capacitance touch units 1000. The structure in the shielding layer 400 is the same as that in the eighth embodiment. The sub-electrode layer 300 is disposed above or below the upper layer of the driving layer 200 and the sensing layer 300 or nested within the layer. The sub-electrode layer 500 includes a plate sub-electrode 510 made of a transparent conductive material, and each of the sub-electrodes 510 is opposite to a region occupied by each electrode in the lower layer of the driving layer 200 and the sensing layer 300.

Further, unlike the eighth embodiment, as shown in FIG. 10, the ninth embodiment further includes a shield layer connecting line 1420 made of a transparent conductive material, and a shield layer lead-out wire 1430; by means of the shield layer The connecting line 1420 electrically connects the shielding layers 400 of the mutual capacitive touch unit 1000, and grounds the lead wires 1430 through the shielding layer. Of course, the shielding electrodes may also be electrically suspended or combined with the combined mutual capacitance touch. The DC source of the board peripheral is electrically connected.

In the seventh to ninth embodiments, the structures of the driving layer 200, the sensing layer 300, the shielding layer 400, and the sub-electrode layer 500 may be referred to any one of the first to sixth embodiments, or any according to the present invention. The structure of the above technical solution.

The transparent conductive material of the present invention is a commonly used material in the prior art, including Indium Tin Oxide, ITO, and Antimony Tin Oxide (ATO).

100‧‧‧ touch plane

100’‧‧‧ touch plane

110‧‧‧Touch area

120‧‧‧protection plane

150‧‧‧ fingers

150’‧‧‧ fingers

200‧‧‧ drive layer

200’‧‧‧ drive layer

210‧‧‧ flat drive electrodes

210’‧‧‧ drive line

211‧‧‧Rectangular drive electrode

212‧‧‧Rhombus Drive Electrode

213‧‧‧hexagon drive electrodes

220‧‧‧Drive electrode connection line

230‧‧‧Drive electrode lead wire

240‧‧‧Drive electrode set

300‧‧‧ sensing layer

300’‧‧‧ sensor layer

310‧‧‧ flat sensing electrodes

310’‧‧‧ sensing line

311‧‧‧Rectangular sensing electrode

312‧‧‧Rhombus sensing electrodes

313‧‧‧Rhombus sensing electrodes

320‧‧‧Sensor electrode cable

330‧‧‧Sensor electrode lead wire

340‧‧‧Sensor electrode set

400‧‧‧Shield

410‧‧‧Slab shield electrode

430‧‧‧Shield electrode lead wire

500‧‧‧ electrode layers

510‧‧ ‧ electrodes

600‧‧‧Excitation signal module

700‧‧‧Sensor Control Module

800‧‧‧DC source

910‧‧‧Capacitive medium plane

910’‧‧‧Media plane

1000‧‧‧mutual capacitive touch unit

1100‧‧‧ touch panel

1420‧‧‧Shield connection cable

1430‧‧‧Shield lead wire

FIG. 1-1 to FIG. 1-6 are schematic diagrams showing the structure and principle of the first embodiment of the “mutual capacitance touch panel” of the present invention, including: FIG. 1-1 is the sensing of the first embodiment. A front view of a front view of the drive layer 200 of the first embodiment; a front view of the front view of the first embodiment; Figure 1-4 is a schematic cross-sectional view taken along line A-A of Figures 1-3; Figure 1-5 is a schematic view of electric field distribution when O ₁ point is not touched in Figures 1-4; 1-4 is a schematic diagram of electric field distribution when O ₁ point is touched; FIGS. 2-1 to 2-5 are schematic diagrams showing the structure and principle of the second embodiment of the "mutual capacitance touch panel" of the present invention. Including: the figure is a front projection front view of the shielding layer 400 of the second embodiment; and FIG. 2-2 is the orthographic projection main of the driving layer 200 and the shielding layer 400 nested together in the second embodiment. a schematic view; Fig. 2-3 is a second embodiment of the orthogonal projection of a bottom cross-sectional view; FIG. 2-4, FIG. 2-3 is an electric field in the point O ₂ is not touched a schematic distribution ; FIG 2-5 FIG. 2-3 is a point O ₂ in the electric field distribution when touched schematic; Fig. 3 is a driver layer of the second embodiment of the present invention, the shielding layer 200 and the touch panel 400 and the peripheral devices Schematic diagram of the connection mode, including the four connection modes of FIG. 3-1 to FIG. 3-4; FIG. 4-1 to FIG. 4-5 are the third embodiment of the "mutual capacitance touch panel" of the present invention. Schematic diagram of the structure and principle, including: Figure 4-1 is a front projection front view of the secondary electrode layer 500 of the third embodiment; and Figure 4-2 is a nested sensing of the third embodiment. Front view of the front view of the layer 300 and the sub-electrode layer 500; Figure 4-3 is a schematic cross-sectional view of the third embodiment of the front projection; Figure 4-4 shows the point of the O ₃ at the 4-3 Schematic diagram of electric field distribution when touched; Fig. 4-5 is a schematic diagram of electric field distribution when O ₃ point is touched in Fig. 4-3; Fig. 5-1 to Fig. 5-3 are related to "reciprocal capacitance" of the present invention A schematic diagram of the structure and principle of the fourth embodiment of the touch panel includes: FIG. 5-1 is a schematic cross-sectional side elevational view of the fourth embodiment; FIG. 5-2 is a schematic view 5-1 in FIG point O ₄ is not touched when the electric field distribution schematic; Fig 5-3 are 5-1 in FIG point O ₄ is touched electric field distribution schematic; FIGS 6-1 through 6-5 is a schematic structural view of a fifth embodiment of the "mutual-capacitive touch panel" of the present invention, including: FIG. 6-1 is a front projection front view of the driving layer 200 of the fifth embodiment; 6-2 is a front projection front view of the sensing layer 300 of the fifth embodiment; FIG. 6-3 is a front projection front view of the shielding layer 400 of the fifth embodiment; FIG. A schematic front view of the secondary electrode layer 500 of the fifth embodiment; FIG. 6-5 is a schematic cross-sectional view of the fifth embodiment taken along line B-B of FIG. 6-1; FIG. 7-5 is a schematic structural view of a sixth embodiment of the “mutual capacitance touch panel” of the present invention, including: FIG. 7-1 is a front projection front view of the driving layer 200 of the sixth embodiment. FIG. 7-2 is a front elevational front view of the sensing layer 300 of the sixth embodiment; and FIG. 7-3 is a front projection front view of the shielding layer 400 of the sixth embodiment. Figure 7-4 is a front elevational view of the secondary electrode layer 500 of the sixth embodiment; and Figures 7-5 are cross-sectional views of the sixth embodiment in the C-C direction of Figure 7-1. schematic diagram.

8-1 to 8-2 are schematic structural views of a seventh embodiment of the "combined mutual capacitance touch panel" of the present invention, including: FIG. 8-1 is a front projection main image of the seventh embodiment. Figure 8-2 is a schematic view of the orthographic projection of the seventh embodiment; Figures 9-1 to 9-2 are related to the "combined mutual capacitance contact" of the present invention. A schematic structural view of an eighth embodiment of the control panel includes: FIG. 9-1 is a schematic front view of the eighth embodiment; and FIG. 9-2 is a front projection bottom view of the eighth embodiment; 10-1 to 10-2 are structural diagrams of a ninth embodiment of the "combined mutual capacitance touch panel" of the present invention, including: FIG. 10-1 is an orthographic projection of the ninth embodiment. FIG. 10-2 is a schematic front view of the ninth embodiment; FIG. 11-1 to FIG. 11-4 are schematic diagrams showing the structure and principle of a prior art mutual-capacitive touch panel, including: 11-1 Figure 1 is a front elevational view of the touch panel; Figure 11-2 is a bottom cross-sectional view of Figure 11-1; Figure 11-3 is a schematic diagram of electric field distribution when the touchpad is not touched; 4 is a schematic diagram of electric field distribution when the touch panel is touched.

110‧‧‧Touch area

210‧‧‧ flat drive electrodes

211‧‧‧Rectangular drive electrode

240‧‧‧Drive electrode set

310‧‧‧ flat sensing electrodes

311‧‧‧Rectangular sensing electrode

340‧‧‧Sensor electrode set

Claims (8)

A mutual capacitive touch panel comprising a touch plane (100) made of a transparent insulating medium, a driving layer (200) and a sensing layer (300) covered by the touch plane (100), and sandwiching the driving layer A capacitor dielectric plane (910) made of a transparent insulating medium between (200) and the sensing layer (300), characterized in that the driving layer (200) comprises a transparent conductive material which is spaced apart in the same plane. a flat panel driving electrode (210); the sensing layer (300) includes flat sensing electrodes (310) made of a transparent conductive material spaced apart in the same plane, and each of the sensing electrodes (310) is distributed In the region of the sensing layer (300) opposite to the gap region between each of the driving electrodes (210) in the driving layer (200), the driving electrode (210) and the sensing electrode (310) are filled together to fill the touch a touch area (110) of the plane (100); the driving electrode (210) is electrically connected to the excitation signal module (600) of the touch panel peripheral, and the sensing control of the sensing electrode (310) and the touchpad peripheral The module (700) is electrically connected, wherein the mutual capacitive touch panel further includes a sub-electrode layer (500), and the sub-electrode layer (500) is disposed on the driving layer (200) And substituting or nesting in the upper layer of the sensing layer (300), and the sub-electrode layer (500) comprises a plate sub-electrode (510) made of a transparent conductive material, each time The electrode (510) is opposite the area occupied by the electrodes in the lower layer of the driving layer (200) and the sensing layer (300). For example, the mutual capacitive touch panel described in claim 1 is: A shielding layer (400) is further included; the shielding layer (400) is disposed above, below or nested in a layer below the driving layer (200) and the sensing layer (300); the shielding layer (400) a flat shield electrode (410) made of a transparent conductive material, and a shield electrode lead wire (430); each of the shield electrodes (410) is located opposite the drive layer (200) and the sensing layer (300) The area occupied by each electrode in the upper layer; the shield electrode (410) is electrically suspended; or, by means of the shield electrode lead wire (430), all the shield electrodes (410) are grounded or a DC source with the touchpad peripheral (800) ) Electrical connection. The mutual capacitive touch panel according to claim 1 or 2, further comprising: a driving electrode connection line (220) and a sensing electrode connection line (320) made of a transparent conductive material, and Driving the electrode lead wire (230) and the sensing electrode lead wire (330); the driving electrode (210) is grouped in series by the driving electrode connecting wire (220), and each of the driving electrode connecting wires (220) is at the driving layer (200) The positional relationship between each other includes collinearity and parallelism; the sensing electrodes (310) are grouped together in series by means of sensing electrode connection lines (320), each of the sensing electrode connection lines (320) being in the sensing layer The positional relationship between (300) includes collinearity and parallelism; the driving electrode connection line (220) and the sensing electrode connection line (320) are perpendicular to each other; and each driving electrode group (240) is driven by the driving electrode lead-out line (230) ) electrically connected to the excitation signal module (600) of the touchpad peripheral; each sensing The electrode set (340) is electrically coupled to the sensing control module (700) of the touchpad peripheral by means of a sensing electrode lead (330). The mutual capacitive touch panel according to claim 1 or 2, wherein: each of the driving electrodes (210) is a rectangular driving electrode (211); each of the sensing electrodes (310) is a rectangular sensing Electrode (311). The mutual capacitive touch panel of claim 1 or 2, wherein: each of the driving electrodes (210) is a diamond driving electrode (212); each of the sensing electrodes (310) is a diamond sensing Electrode (312). The mutual capacitive touch panel according to claim 1 or 2, wherein each of the driving electrodes (210) is a hexagonal driving electrode (213); each of the sensing electrodes (310) is a diamond shape Sensing electrode (313). A combined mutual capacitance touch panel comprising a touch panel (1100) made of a transparent insulating medium, characterized by further comprising at least two mutual capacitive touch units closely arranged by the touch panel (1100) ( 1000), the mutual capacitance touch unit (1000) together fills a touch area of the touch panel (1100); the mutual capacitance touch unit (1000) includes a driving layer (200) and a sensing layer (300), and is sandwiched by the driving layer a dielectric medium plane (910) made of a transparent insulating medium between (200) and the sensing layer (300); the driving layer (200) includes a flat panel drive made of a transparent conductive material with the same in-plane spacing Electrode (210); the sensing layer (300) comprising flat sensing electrodes (310) made of a transparent conductive material in the same plane, each of the sensing electrodes (310) being distributed in the sensing layer (300) and each of the driving layers (200) The electrodes (210) are in a region directly opposite to each other in the gap region, and the driving electrode (210) and the sensing electrode (310) are filled together with a touch region (110) of the mutual capacitance touch unit (1000); the driving electrode (210) electrically connected to an excitation signal module (600) of the mutual capacitance touch unit (1000) of the combined mutual capacitance touch panel peripheral corresponding to the driving electrode (210), the sensing electrode (310) and the combination The sensing control module (700) of the mutual capacitive touch panel peripheral corresponding to the mutual capacitance touch unit (1000) of the sensing electrode (310) is electrically connected, wherein the mutual capacitance touch unit (1000) further includes An electrode layer (500) disposed above or below a layer above the driving layer (200) and the sensing layer (300) or nested within the layer, and the sub-electrode layer ( 500) comprising a plate sub-electrode (510) made of a transparent conductive material, each of the sub-electrodes (510) facing the drive layer (200) and the sensing layer (30) 0) The area occupied by each electrode in the lower layer. The combined mutual capacitance touch panel of claim 7, wherein: the shielding layer connecting wire (1420) made of a transparent conductive material, and the shielding layer lead wire (1430); the mutual capacitance touch The unit (1000) further includes a shielding layer (400); The shielding layer (400) is disposed above, below or nested in a layer below the driving layer (200) and the sensing layer (300); the shielding layer (400) comprises a transparent conductive material a flat shield electrode (410), and a shield electrode lead wire (430); each of the shield electrodes (410) is opposite to each of the electrodes in the upper layer of the driving layer (200) and the sensing layer (300) The shielding electrode (410) is electrically suspended; or, by means of the shielding layer connection line (1420), the respective shielding layers (400) of the mutual capacitance touch unit (1000) are electrically connected together and lead wires through the shielding layer ( 1430) grounded or electrically connected to a DC source (800) of the combined mutual capacitance touch panel peripheral; or, by means of a shield electrode lead wire (430), the respective shield electrodes (410) of the mutual capacitance touch unit (1000) Ground or electrically connect to the DC source (800) of the combined mutual capacitance touchpad peripheral.