CN213958040U - Touch control device - Google Patents

Abstract

The application provides a touch device, which comprises a touch panel, wherein the touch panel is provided with a touch area, the touch panel comprises at least two first electrode layers and at least one second electrode layer which are arranged in a stacked mode, the first electrode layers comprise first touch sensing areas, the touch areas are filled by orthographic projection splicing of the first touch sensing areas, which are respectively arranged on the at least two first electrode layers, on the touch areas, the second electrode layers comprise second touch sensing areas, and the at least two first electrode layers and the at least one second electrode layer form mutual capacitance structures respectively; and the signal adjusting chip is connected with the touch panel and used for receiving the induction capacitance values output by the touch panel and judging the effectiveness of the induction capacitance values respectively based on the set capacitance threshold values corresponding to the mutual capacitance structures. The embodiment of the application presets at least one set capacitance threshold value in the signal adjusting chip, so that the identification degree of the induction signal is improved.

Description

Touch control device

Technical Field

The application relates to the technical field of touch control, in particular to a touch control device.

Background

At present, electronic products are indispensable in people's daily life, especially electronic products with touch control function. With the increasing demand of people for electronic products, the touch requirements for touch products are also higher and higher.

In a conventional touch device, the manufactured driving electrodes and the manufactured sensing electrodes are designed in a single-layer manner, so that the distance between the upper electrode and the lower electrode at each touch node is the same, the difference between capacitance values is smaller, and the recognition degree of sensing signals is lower.

SUMMERY OF THE UTILITY MODEL

In view of this, the present disclosure provides a touch device, which can improve the recognition degree of a touch signal.

The application provides a touch device, this touch device includes: the touch panel is provided with a touch area and comprises at least two first electrode layers and at least one second electrode layer which are arranged in a stacked mode, wherein the first electrode layers comprise first touch sensing areas, orthographic projections of the first touch sensing areas on the touch area, formed by the first electrode layers, of the at least two first electrode layers are spliced and filled in the touch area, the second electrode layers comprise second touch sensing areas, and the at least two first electrode layers and the at least one second electrode layer form at least two mutual capacitance structures respectively; and the signal adjusting chip is connected with the touch panel and used for receiving the induction capacitance values output by the touch panel and judging the effectiveness of the induction capacitance values respectively based on the set capacitance threshold values corresponding to the mutual capacitance structures.

In an embodiment of the present application, the capacitance threshold is set in relation to an electrode distance between corresponding mutual capacitance structures, and/or the capacitance threshold is set in relation to a distance between a corresponding upper electrode layer forming the mutual capacitance structures and a surface of the touch device.

In an embodiment of the present application, the at least two set capacitance thresholds include a first set capacitance threshold, a second set capacitance threshold, a third set capacitance threshold, and a fourth set capacitance threshold, the at least two first electrode layers include a first electrode layer and a second electrode layer, the at least one second electrode layer includes a third electrode layer and a fourth electrode layer, the first electrode layer, the third electrode layer, the second electrode layer, and the fourth electrode layer are sequentially stacked, and a first mutual capacitance structure formed by the first electrode layer and the third electrode layer corresponds to the first set capacitance threshold; a second mutual capacitance structure formed by the second electrode layer and the third electrode layer corresponds to a second set capacitance threshold value; a third mutual capacitance structure formed by the second electrode layer and the fourth electrode layer corresponds to a third set capacitance threshold value; a fourth mutual capacitance structure formed by the first electrode layer and the fourth electrode layer corresponds to a fourth set capacitance threshold.

In an embodiment of the present application, the at least two set capacitance thresholds include a fifth set capacitance threshold and a sixth set capacitance threshold, the at least two first electrode layers include a fifth electrode layer and a sixth electrode layer, the at least one second electrode layer includes a seventh electrode layer, the fifth electrode layer, the seventh electrode layer, and the sixth electrode layer are sequentially stacked, and a fifth mutual capacitance structure formed by the fifth electrode layer and the seventh electrode layer corresponds to the fifth set capacitance threshold; a sixth mutual capacitance structure composed of the seventh electrode layer and the sixth electrode layer corresponds to a sixth set capacitance threshold.

In an embodiment of the present application, the first-type touch sensing area includes a plurality of first-type electrodes extending along a first direction, the second-type touch sensing area includes a plurality of second-type electrodes extending along a second direction, the first-type electrode layer further includes a first peripheral circuit area adjacent to the touch sensing area, wherein the first peripheral circuit area includes a plurality of first signal leads, one end of each of the plurality of first signal leads is electrically connected to the plurality of first-type electrodes, and the other end of each of the plurality of first signal leads is distributed on at least one side of the first peripheral circuit area and is electrically connected to the signal conditioning chip; the second electrode layer further comprises a second peripheral line area adjacent to the touch area, wherein the second peripheral line area comprises a plurality of second signal leads, one end of each second signal lead is electrically connected with the second electrodes, and the other end of each second signal lead is distributed on at least one side of the second peripheral line area and is electrically connected with the signal conditioning chip.

In an embodiment of the present application, the plurality of first signal leads are distributed on a first side of the first peripheral circuit area adjacent to the first type of touch sensing area, the first side is provided with a wire collecting portion, and the other ends of the plurality of first signal leads are collected in at least one wire collecting portion and electrically connected to the signal conditioning chip; or the plurality of first signal leads are distributed on a first side and a second side which are adjacent to the first type of touch sensing area in the first peripheral circuit area, the first side and the second side are both provided with a wire collecting part, and the other ends of the plurality of first signal leads are collected in the wire collecting part and are electrically connected with the signal adjusting chip.

In an embodiment of the present application, the plurality of first-type electrodes are patterned metal mesh electrodes, and the plurality of first-type electrodes included in each of the at least two first-type electrode layers adopt a non-identical polygonal metal mesh pattern.

In an embodiment of the present invention, the plurality of second signal leads are distributed on a fourth side of the second peripheral circuit area adjacent to the second type of touch sensing area, the fourth side is provided with a wire collecting portion, and the other ends of the plurality of second signal leads are collected in at least one wire collecting portion and electrically connected to the signal conditioning chip; or the plurality of second signal leads are distributed on the first side and the fourth side of the second peripheral line area, which are adjacent to the second type touch sensing area, the first side and the fourth side are provided with wire concentration parts, and the other ends of the plurality of second signal leads are collected at the wire concentration parts and are electrically connected with the signal regulating chip.

In an embodiment of the present application, the plurality of second-type electrodes are patterned metal mesh electrodes, and the plurality of second-type electrodes included in each of the at least two second-type electrode layers adopt a non-identical polygonal metal mesh pattern.

In an embodiment of the present application, the signal conditioning chip is an independent chip, and is respectively connected to the touch panel and the touch chip of the touch device; or the signal regulating chip is integrated in a flexible circuit board, and the flexible circuit board is used for connecting the touch panel and the touch chip; or, the signal conditioning chip is integrated in the touch chip.

The embodiment of the application provides a touch device, wherein one type of electrodes in touch electrodes are arranged in different layers, so that the distances from a touch capacitive unit to fingers at different positions in a touch area are not completely the same, and the distances between two electrode layers forming the capacitive unit are not completely the same. Meanwhile, a set capacitance threshold corresponding to the mutual capacitance structure is stored in the signal regulating chip in advance, and when fingers touch different positions, generated sensing signals which are not identical are compared with the set capacitance threshold, so that the touch positions are distinguished in an assisted mode, and the identification degree of the sensing signals is improved.

Drawings

Fig. 1 is a schematic structural diagram illustrating a top view of a touch device according to an embodiment of the present disclosure.

Fig. 2 is a schematic structural diagram illustrating an electrode arrangement in a top view of a touch device according to an embodiment of the present disclosure.

Fig. 3 is a schematic structural diagram of a three-dimensional structure of a touch device according to an embodiment of the present disclosure.

Fig. 4 is a schematic structural diagram of a three-dimensional structure of a touch device according to another embodiment of the present disclosure.

Fig. 5 is a schematic structural diagram illustrating a top view of a touch device according to another embodiment of the present disclosure.

Fig. 6 is a schematic structural diagram illustrating an electrode arrangement in a top view of a touch device according to another embodiment of the present disclosure.

Fig. 7 is a schematic structural diagram illustrating a top view of a touch device according to another embodiment of the present disclosure.

Fig. 8 is a schematic structural diagram of a top view of a touch device according to still another embodiment of the present disclosure.

Fig. 9 is a schematic structural diagram of a patterned metal grid electrode according to an embodiment of the present application.

Fig. 10 is a schematic structural diagram of a patterned metal grid electrode according to another embodiment of the present application.

Fig. 11 is a schematic structural diagram of a patterned metal grid electrode according to yet another embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

Fig. 1 is a schematic structural diagram illustrating a top view of a touch device according to an embodiment of the present disclosure. As shown in fig. 1, the touch device provided in the embodiment of the present application has a touch panel with a touch area. The touch panel includes two first electrode layers, such as a first electrode layer 1 (i.e., the first electrode layer 1 in (a)) and another first electrode layer 2 (i.e., the first electrode layer 2 in (b)) in fig. 1. Two second type electrode layers, for example, one second type electrode layer 3 in fig. 1 (i.e., the second type electrode layer 3 in (c)) and the other first type electrode layer 4 (i.e., the second type electrode layer 4 in (d)). The first type electrode layer 1 (or 2) comprises a first type touch sensing area. The orthographic projection of the first type touch sensing areas on the touch areas, which are respectively included by the two first type electrode layers, is spliced and filled in the touch areas. The second type electrode layer 3 (or 4) comprises a second type touch sensing area. And the orthographic projection splicing of the second type touch sensing areas respectively included by the two second type electrode layers on the touch areas is filled in the touch areas. The two first-type electrode layers and the two second-type electrode layers form four mutual capacitance structures. And the signal adjusting chip (not shown) is connected with the touch panel and is used for receiving the sensing capacitance value output by the touch panel and judging the effectiveness of the sensing capacitance value respectively based on the set capacitance threshold value corresponding to each mutual capacitance structure.

Specifically, the top view direction shown in fig. 1 is a direction perpendicular to the touch device from top to bottom. The number of layers of the first electrode layer and the second electrode layer stacked in this embodiment is not limited to two layers mentioned in this embodiment, and may be three, four or more layers, which is not specifically limited in this embodiment.

With continued reference to fig. 1, the two first electrode layers may be stacked by stacking the first electrode layer 1 in (a) and the first electrode layer 2 in (b). In the first electrode layer 1, the first touch sensing area may be a touch area formed by combining a plurality of first electrodes 11 extending along the first direction a, and any two adjacent first electrodes 11 are not connected to each other. In the first electrode layer 2, the first touch sensing area may also be a touch area formed by combining a plurality of first electrodes 21 extending along the first direction a, and any two adjacent first electrodes 21 are not connected to each other. The orthographic projection of the first type touch sensing area formed by combining the plurality of first type electrodes 11 and the first type touch sensing area formed by combining the plurality of first type electrodes 21 can be spliced and filled in all the touch sensing areas. Or, the orthographic projections of the first electrodes 11 and the first electrodes 21 on the touch area are not overlapped and just fill the whole touch area.

In the second-type electrode layer 3, the second-type touch sensing area refers to a touch area formed by combining a plurality of second-type electrodes 31 extending along the second direction B, and any two adjacent second-type electrodes 31 are not connected to each other. In the second-type electrode layer 4, the second-type touch sensing area refers to a touch area formed by combining a plurality of second-type electrodes 41 extending along the second direction B, and any two adjacent second-type electrodes 41 are not connected to each other. The second type touch sensing area formed by combining the plurality of second type electrodes 31 and the second type touch sensing area formed by combining the plurality of second type electrodes 41 can be spliced and completely filled in the touch area of the touch panel by orthographic projection on the touch area.

The touch area may be a central area of the touch panel (or touch device), and in some embodiments, may be equal to a display area of the touch screen. The touch area can also be understood as an area formed by combining a plurality of first-type touch sensing areas.

Examples of the lamination of the first type electrode layer and the second type electrode layer included in the touch panel in the touch device are given below with reference to fig. 2 to 4.

Referring to fig. 2, the touch area is completely filled with the first-type electrode layer and the second-type electrode layer, or the first- type electrodes 11 and 21 extending along the first direction are not overlapped and fill exactly the entire touch area, and the second- type electrodes 31 and 41 extending along the second direction are also not overlapped and fill exactly the entire touch area. That is, any region of the touch area is correspondingly provided with a first electrode layer and a second electrode layer to form a mutual capacitance structure for signal induction, and because of the height difference between the electrode layers, the induction signals of the electrode layers are different, so that the signal identification degree is improved.

The stacking order between the first-type electrode layer and the second-type electrode layer may be various. As shown in fig. 1, the four electrode layers with reference numbers 1-4 respectively have a stacking sequence of 1, 2, 3 and 4 in the vertical direction of the touch device, for example, fig. 3. One first electrode layer 1 is adhered to the other first electrode layer 2 through a first optical adhesive layer 31, the first electrode layer 2 is adhered to one second electrode layer 3 through a second optical adhesive layer 32, and the second electrode layer 3 is adhered to the other second electrode layer 4 through a third optical adhesive layer 33.

For another example, as shown in fig. 1, four electrode layers with reference numbers 1 to 4 respectively may be stacked in the order of 1, 3, 4 and 2 in the vertical direction of the touch device, for example, as shown in fig. 11. The first electrode layer 1 is adhered to the second electrode layer 3 through the first optical adhesive layer 34, the second electrode layer 3 is adhered to the second electrode layer 4 through the second optical adhesive layer 35, and the second electrode layer 4 is adhered to the first electrode layer 2 through the third optical adhesive layer 36.

In addition, as shown in fig. 1, the four electrode layers with reference numbers 1 to 4 respectively may be stacked in the vertical direction of the touch device in the order of 1, 3, 2, and 4, or 3, 2, 1, and 4, and the arrangement order of the electrode layers in the vertical direction is not specifically limited in the embodiments of the present application.

In an example, the touch panel is formed by pasting two layers of metal grid electrodes through an optical adhesive layer. Here, the structure is not limited to the double-layer metal mesh electrode, and the double-layer metal mesh electrode is only one way of combining four electrode layers.

For example, with continued reference to fig. 1, the first electrode layer 1 in (a) and the second electrode layer 3 in (c) form a two-layer metal grid electrode, and the first electrode layer 2 in (b) and the second electrode layer 4 in (d) form another two-layer metal grid electrode, which are adhered together by an optical adhesive layer. Or the first electrode layer 1 in (a) and the first electrode layer 2 in (b) form a double-layer metal grid electrode, and the second electrode layer 3 in (c) and the second electrode layer 4 in (d) form another double-layer metal grid electrode, which are adhered through an optical adhesive layer. Or the first electrode layer 1 in (a) and the second electrode layer 4 in (d) form a double-layer metal grid electrode, the second electrode layer 3 in (c) and the first electrode layer 2 in (b) form another double-layer metal grid electrode, and the two double-layer metal grid electrodes are adhered through an optical adhesive layer.

In one example, the two-layer double-layer metal grid electrode also comprises a substrate. The first substrate is equivalent to a carrier plate of two first electrode layers. The second substrate is equivalent to the carrier plate of the two second electrode layers. The first substrate and the second substrate may be prepared by a photolithography process, or may be prepared by a sputtering process.

In one example, an electrode layer may also be disposed on a surface (e.g., a lower surface) of the cover plate away from the display screen. The other two electrode layers are respectively arranged on the upper surface and the lower surface of the first substrate. And the last electrode layer is arranged on the upper surface of the second substrate, and then the cover plate, the first substrate and the second substrate are adhered through OCA glue.

In one embodiment, the first electrode layer is a driving electrode layer, and the second electrode layer is a sensing electrode layer; or the first electrode layer is an induction electrode layer, and the second electrode layer is a driving electrode layer.

At least two set capacitance thresholds are prestored in the signal adjusting chip. The number of the capacitance threshold values may be set according to the number of the electrode layers (i.e., the first-type electrode layer and the second-type electrode layer), and the number of the capacitance threshold values is not particularly limited in the embodiments of the present application. For example, if the number of electrode layers is four, the number of capacitance thresholds is set to four. For another example, if the number of electrode layers is three, the number of capacitance thresholds is set to two.

In one embodiment, the capacitance threshold is related to the electrode distance between the corresponding mutual capacitance structures, and/or the capacitance threshold is related to the distance from the corresponding upper electrode layer forming the mutual capacitance structures to the surface of the touch device.

Specifically, the set capacitance threshold may be determined based on an electrode spacing between mutual capacitance structures, e.g., the larger the electrode spacing, the smaller the corresponding set capacitance threshold; the distance between the upper electrode layer forming the mutual capacitance structure and the surface of the touch device can also be determined, for example, the smaller the distance, the larger the corresponding set capacitance threshold value; the distance between the electrodes of the mutual capacitance structure and the distance from the upper electrode layer to the surface of the touch device may also be determined based on the mutual capacitance structure, which is not specifically limited in this embodiment of the application.

In an embodiment, the set capacitance threshold may be a lowest capacitance threshold in the touch area corresponding to each mutual capacitance structure; the signal adjusting chip judges the effectiveness of the induction capacitance value output by the touch panel based on the set capacitance threshold value corresponding to each mutual capacitance structure.

Specifically, when the signal conditioning chip receives an induced capacitance value output by the touch panel, the mutual capacitance structure generating the induced capacitance value may be determined according to a first type of electrode (e.g., a driving electrode) and a second type of electrode (e.g., an induced electrode) generating the induced capacitance value, and then a set capacitance threshold corresponding to the mutual capacitance structure is called and compared with the induced capacitance value.

In one embodiment, the set capacitance threshold may be a range of capacitance values; the signal adjusting chip judges the effectiveness of the induction capacitance value output by the touch panel based on the set capacitance threshold value corresponding to each mutual capacitance structure.

Specifically, when the signal conditioning chip receives an induction capacitance value output by the touch panel, the induction capacitance value is compared with a set capacitance threshold corresponding to each mutual capacitance structure, if the induction capacitance value falls within a certain set capacitance threshold range, the induction capacitance value is determined to be valid, and a touch area corresponding to the set capacitance threshold in which the induction capacitance value falls can be determined as an area where touch operation occurs; the touch device can further determine specific touch coordinates in the touch area according to the driving electrodes and the sensing electrodes which generate the sensing capacitance values; if the sensing capacitance value does not fall within any set capacitance threshold range, the sensing capacitance value is determined to be invalid, namely, effective touch operation does not occur.

It should be noted that the set capacitance threshold may be in other forms, and the specific form of the set capacitance threshold is not particularly limited in the embodiments of the present application.

In one embodiment, the number of the first electrode layer is two, and the number of the second electrode layer is one, or the number of the first electrode layer is one, and the number of the second electrode layer is two.

In one embodiment, the number of the first electrode layers is two, and the number of the second electrode layers is two.

It should be understood that fig. 5 is an example of the embodiment of fig. 1, and fig. 5 is two first type electrode layers, for example, one first type electrode layer 1 (i.e., (a) first type electrode layer 1) and another first type electrode layer 2 (i.e., (b) first type electrode layer 2) in fig. 1, and one second type electrode layer 3. It should be noted that, when the second type electrode layer is designed to have a structure of one layer, the orthographic projection of the second type touch sensing area included in the second type electrode layer in this embodiment may be substantially equal to the touch area of the touch panel. The specific content is substantially the same as that of the embodiment shown in fig. 1, and please refer to the description of the embodiment in fig. 1 for details, which are not repeated herein.

Therefore, in the embodiment of the application, one type of electrodes in the touch electrodes are arranged in different layers, so that distances from the touch capacitive unit to the finger at different positions in the touch area are not completely the same, and distances between two electrode layers forming the capacitive unit are not completely the same, so that when the finger touches at different positions in the touch area, the sensing capacitance values output by the touch panel may not be completely the same; meanwhile, the set capacitance threshold corresponding to the mutual capacitance structure is stored in the signal adjusting chip in advance, and the sensing capacitance value output by the touch panel is compared with the set capacitance threshold, so that the touch position is distinguished in an assisting manner, and the identification degree of the sensing signal is improved.

In an embodiment of the present application, the at least two set capacitance thresholds include a first set capacitance threshold, a second set capacitance threshold, a third set capacitance threshold, and a fourth set capacitance threshold, the at least two first electrode layers include a first electrode layer and a second electrode layer, the at least one second electrode layer includes a third electrode layer and a fourth electrode layer, the first electrode layer, the third electrode layer, the second electrode layer, and the fourth electrode layer are sequentially stacked, and a first mutual capacitance structure formed by the first electrode layer and the third electrode layer corresponds to the first set capacitance threshold; a second mutual capacitance structure formed by the second electrode layer and the third electrode layer corresponds to a second set capacitance threshold value; a third mutual capacitance structure formed by the second electrode layer and the fourth electrode layer corresponds to a third set capacitance threshold value; a fourth mutual capacitance structure formed by the first electrode layer and the fourth electrode layer corresponds to a fourth set capacitance threshold.

Specifically, the touch device comprises two first electrode layers and two second electrode layers which are stacked. One of the two first electrode layers is a first electrode layer, and the other one is a second electrode layer. One of the two second electrode layers is a third electrode layer, and the other one is a fourth electrode layer.

In one example, the touch panel of the touch device is sequentially stacked and disposed as a first electrode layer of a first type (i.e., a first electrode layer), a second electrode layer of a second type (i.e., a third electrode layer), a third electrode layer of the first type (i.e., a second electrode layer), and a fourth electrode layer of the second type (i.e., a fourth electrode layer).

A first mutual capacitance structure formed by the first layer of the first electrode layer and the second layer of the second electrode layer corresponds to a first set capacitance threshold value; a second mutual capacitance structure formed by the second layer of the second electrode layer and the third layer of the first electrode layer corresponds to a second set capacitance threshold value; a third mutual capacitance structure formed by the first electrode layer and the fourth electrode layer corresponds to a third set capacitance threshold value; and a fourth mutual capacitance structure formed by the third layer of the first electrode layer and the fourth layer of the second electrode layer corresponds to a fourth set capacitance threshold value.

The four electrode layers are stacked to divide the touch area into four mutual capacitance structures, which are the first mutual capacitance structure 61, for example, the upper left, as shown in the orientation shown in fig. 2; a second mutual capacitance structure 62, e.g., bottom left; a third mutual capacitance structure 63, e.g., top right; and a fourth mutual capacitance structure 64, for example, lower right (see the area divided by the dashed line in fig. 2). In view of the electrode spacing, the upper and lower electrodes of the first mutual capacitor structure 61, the second mutual capacitor structure 62, and the fourth mutual capacitor structure 64 are all adjacent layers, and the electrode spacing may be considered to be the same, and is also the minimum spacing. And the third mutual capacitance structure 63 is formed by a first electrode layer of the first type and a fourth electrode layer of the second type, with the largest distance. Therefore, the capacitance variation caused by touch in this area is significantly smaller than that in the other three areas.

However, considering the distance from the upper electrode in the mutual capacitance structure to the surface of the touch device, although the capacitance pitches of the three mutual capacitance structures, namely the first mutual capacitance structure 61, the second mutual capacitance structure 62 and the fourth mutual capacitance structure 64, are the same, the upper electrode of the first mutual capacitance structure 61 is the first-type electrode layer, the upper electrode of the second mutual capacitance structure 62 is the second-type electrode layer, and the upper electrode of the fourth mutual capacitance structure 64 is the third-type first-type electrode layer. Therefore, for the same touch operation, when the first mutual capacitance structure 61 touches, the finger is closest to the mutual capacitance, and the generated capacitance variation should be the largest, and when the fourth mutual capacitance structure 64 touches, the finger is farthest from the mutual capacitance, and the generated capacitance variation should be the smallest.

Therefore, different thresholds can be set for different areas according to a specific stacking mode, so that when detecting, the signal adjusting chip can determine the corresponding areas according to the first electrode layer and the second electrode layer in different stacking modes, and accordingly a proper threshold is selected for judgment.

For example, the first set capacitance threshold is greater than the second set capacitance threshold and greater than the fourth set capacitance threshold is greater than the third set capacitance threshold. It should be noted that, the specific determination for setting the capacitance threshold may be set according to actual situations, and this is not particularly limited in the embodiment of the present application.

The order of stacking the four electrode layers may be set according to actual conditions, for example, a first second electrode layer (i.e., a third electrode layer), a second first electrode layer (i.e., a first electrode layer), a third second electrode layer (i.e., a fourth electrode layer), and a fourth first electrode layer (i.e., a second electrode layer). The specific order of the electrode layers is not limited in the embodiments of the present application, and it should be understood that any technical solution that divides the same type of electrode layer into at least two layers and sets capacitance thresholds in different regions should fall within the scope to be protected by the present application.

It should be noted that, if the substrate is disposed between the electrode layers (the first type electrode layer or the second type electrode layer), the corresponding set capacitance threshold should be adjusted accordingly.

Therefore, the set capacitance threshold corresponding to the mutual capacitance structure is stored in the signal adjusting chip in advance, so that the mutual capacitance structures with different electrode layer intervals have different set capacitance thresholds, and the signal adjusting chip compares the received sensing capacitance value with the set capacitance threshold, so that the touch position is assisted to be distinguished, and the identification degree of the sensing signal is improved.

In an embodiment of the application, the at least two set capacitance thresholds include a fifth set capacitance threshold and a sixth set capacitance threshold, the at least two first electrode layers include a fifth electrode layer and a sixth electrode layer, the at least one second electrode layer includes a seventh electrode layer, the fifth electrode layer, the seventh electrode layer and the sixth electrode layer are sequentially stacked, and a fifth mutual capacitance structure formed by the fifth electrode layer and the seventh electrode layer corresponds to the fifth set capacitance threshold; a sixth mutual capacitance structure composed of the seventh electrode layer and the sixth electrode layer corresponds to a sixth set capacitance threshold.

Specifically, the touch panel in the touch device includes two first electrode layers and one second electrode layer, i.e., a seventh electrode layer, which are stacked. One of the two first electrode layers is a fifth electrode layer, and the other one is a sixth electrode layer.

In an example, the electrode layers in the touch panel may be sequentially stacked in the order of a first electrode layer of a first type (i.e., a fifth electrode layer), a second electrode layer of a second type (i.e., a seventh electrode layer), and a third electrode layer of the first type (i.e., a sixth electrode layer).

The three electrode layers may be stacked to divide the touch area into two mutual capacitance structures, which are respectively the fifth mutual capacitance structure 65, for example, the upper part, as shown in the orientation shown in fig. 6; a sixth mutual capacitance structure 66, e.g., a lower portion (see the area divided by the dashed line in fig. 6). In view of the electrode distance, the fifth mutual capacitance structure 65 and the sixth mutual capacitance structure 66, the upper and lower electrodes constituting the mutual capacitance structure are all adjacent layers, and the electrode distance can be considered to be the same.

However, considering the distance from the upper electrode in the mutual capacitance structure to the surface of the touch device, although the capacitance pitches of the fifth mutual capacitance structure 65 and the sixth mutual capacitance structure 66 are the same, the upper electrode of the fifth mutual capacitance structure 65 is the first-type electrode layer, and the upper electrode of the sixth mutual capacitance structure 66 is the second-type electrode layer. Therefore, for the same touch operation, when the fifth mutual capacitance structure 65 touches, the finger is closest to the mutual capacitance, and the capacitance variation should be the largest, whereas when the sixth mutual capacitance structure 66 touches, the finger is farther from the mutual capacitance, and the capacitance variation should be smaller.

Illustratively, the fifth set capacitance threshold corresponding to the fifth mutual capacitance structure is greater than the sixth set capacitance threshold corresponding to the sixth mutual capacitance structure.

It should be noted that, in the process of setting the capacitance threshold, the setting may be performed according to the electrode distance and the distance from the upper electrode in the mutual capacitance structure to the surface of the touch device. That is, the first set capacitance threshold may be the same as the fifth set capacitance threshold. The second set capacitance threshold may be the same as the sixth set capacitance threshold.

It should be noted that, in the embodiment of the present application, a specific stacked structure of the electrode layers is not limited, and the electrode layers may be a first second type electrode layer, a second first type electrode layer, and a third second type electrode layer, and the embodiment of the present application is not specifically limited.

Therefore, the set capacitance threshold corresponding to the mutual capacitance structure is stored in the signal adjusting chip in advance, so that the mutual capacitance structures with different electrode layer intervals have different set capacitance thresholds, and the signal adjusting chip compares the received sensing capacitance value with the set capacitance threshold, so that the touch position is assisted to be distinguished, and the identification degree of the sensing signal is improved.

In an embodiment of the application, the first-type touch sensing area includes a plurality of first-type electrodes extending along a first direction, and the first-type electrode layer further includes a first peripheral circuit area adjacent to the touch sensing area, where the first peripheral circuit area includes a plurality of first signal leads, one end of each of the plurality of first signal leads is electrically connected to the plurality of first-type electrodes, and the other end of each of the plurality of first signal leads is distributed on at least one side of the first peripheral circuit area and electrically connected to the signal conditioning chip.

Specifically, referring to fig. 1, the first direction a and the second direction B are perpendicular to each other, and the first direction a or the second direction B may be an X-axis direction (transverse direction) or a Y-axis direction (longitudinal direction) of a two-dimensional rectangular coordinate system, that is, when the first direction a is the X-axis direction (transverse direction), the second direction B is referred to as the Y-axis direction (longitudinal direction), and when the first direction a is the Y-axis direction (longitudinal direction), the second direction B is referred to as the X-axis direction (transverse direction).

The first-type touch sensing area includes a plurality of first-type electrodes 11 (or 21) extending in the first direction a. The first electrode layer 1 further includes a first peripheral circuit region (i.e., a portion between a frame of the first electrode layer 1 and a dashed line frame in fig. (a)) adjacent to the touch region, wherein the first peripheral circuit region includes a plurality of first signal leads 12 (or 22). One end of the first signal leads 12 (or 22) is electrically connected to the first electrodes 11 (or 21), and the other end is distributed on at least one side of the first peripheral circuit region and electrically connected to a signal conditioning chip (not shown).

The first-type touch sensing area may also include a plurality of first-type electrodes (e.g., the first-type electrodes 11 or the first-type electrodes 21 shown in fig. 7) that form a certain angle with the first direction a. Moreover, the sizes of the first type touch sensing areas included in the two first type electrode layers may be equal (i.e., the touch sensing areas are equally divided, see fig. 1), or may be unequal. In addition, the shape of the first type of touch-sensing area may be rectangular (e.g., fig. 1), trapezoidal (e.g., fig. 2), triangular, or other polygonal shape. The size, shape and composition form of the first type of touch sensing area are not particularly limited in the embodiments of the present application.

The first electrode layer also comprises a first peripheral circuit area. The first peripheral line region is a portion between the frame of the first-type electrode layer 1 and the dashed line frame in fig. (a), and the first peripheral line region is a portion between the frame of the first-type electrode layer 2 and the dashed line frame in fig. (b). The first peripheral circuit region further includes a plurality of first signal leads 12 (or 22), and the plurality of first-type electrodes 11 are electrically connected to the plurality of first signal leads 12, respectively. A first-type electrode 11 is electrically connected to a first signal lead 12 (or a first-type electrode 21 is electrically connected to a first signal lead 22), so that the plurality of first signal leads 12 are gathered in a certain area of at least one side surface (which may be an upper side, a lower side, a left side or a right side of the touch device) of the first peripheral circuit area to be connected to the signal conditioning chip, thereby connecting the first-type electrode 11 to the signal conditioning chip.

It should be noted that, the plurality of first signal leads may also be distributed on three or four sides of the first peripheral circuit region, which is not specifically limited in this application. For details of the arrangement of the first signal lead, please refer to the following description of the embodiments, which is not repeated herein to avoid repetition.

It is further noted that the plurality of first signal leads 12 may be a plurality of metal leads. The width of the first signal leads can be 4-15 μm, and the material can be silver, copper or nano-scale conductive powder (powder particles are 10-100 nm). The plurality of first signal leads 12 may be formed by any one of screen printing, laser etching, and 3D printing.

Therefore, the first-type electrodes are divided into at least two layers, so that the number of signal leads corresponding to each layer is reduced. Meanwhile, the plurality of first signal leads are collected on at least one side of the first peripheral circuit area, so that the edge width of the whole touch device is reduced.

In an embodiment of the present application, the second type touch sensing area includes a plurality of second type electrodes extending along a second direction, and the second type electrode layer further includes a second peripheral circuit area adjacent to the touch area, wherein the second peripheral circuit area includes a plurality of second signal leads, one end of each of the plurality of second signal leads is electrically connected to the plurality of second type electrodes, and the other end of each of the plurality of second signal leads is distributed on at least one side of the second peripheral circuit area and is electrically connected to the signal conditioning chip.

Specifically, referring to fig. 1, the second-type touch sensing area may include a plurality of second-type electrodes 31 (or 41) parallel to the second direction B, or may include a plurality of second-type electrodes (e.g., the second- type electrodes 31 or 41 in fig. 7) having a certain angle with the second direction B. The sizes of the second-type touch sensing areas included in the two second-type electrode layers may be equal (i.e., the touch sensing areas are equally divided), or may not be equal, and the shape of the second-type touch sensing area may be a rectangle (e.g., fig. 7), a trapezoid (e.g., fig. 7), a triangle, or another polygon. The size, shape and composition form of the second type of touch sensing area are not particularly limited in the embodiments of the present application.

It should be understood that fig. 7 also includes two electrode layers of the first type and two electrode layers of the second type, as well as the same number of layers of the electrode layers of the first type as shown in fig. 1. In fig. 7, two first type electrode layers, one being the first type electrode 1 in (a) and the first type electrode 2 in (b). Two second type electrode layers, one is the second type electrode 3 in (c) and the second type electrode 4 in (d). The first electrode layer 1 in (a) includes a first touch sensing area formed by a plurality of first electrodes 11 having a certain included angle with the first direction a, and a plurality of metal leads 12 electrically connected to the plurality of first electrodes 11. (b) The first-type electrode layer 2 also includes a first-type touch sensing area formed by a plurality of first-type electrodes 21 having a certain included angle with the first direction a, and a plurality of metal leads 22 electrically connected to the plurality of first-type electrodes 21. (c) The middle second electrode layer 3 includes a second touch sensing area formed by a plurality of second electrodes 31 having a certain included angle with the second direction B, and a plurality of metal leads 32 electrically connected to the plurality of second electrodes 31. (d) The middle second electrode layer 4 also includes a second touch sensing area formed by a plurality of second electrodes 41 having a certain included angle with the second direction B, and a plurality of metal leads 42 electrically connected to the plurality of second electrodes 41. The touch area is spliced based on the first type electrode layer 1 (or 2) and the second type electrode layer 3 (or 4) and completely fills the area.

With continued reference to fig. 7, the second type of electrode layer further includes a second peripheral line region. The second peripheral line region is a portion between the frame of the second electrode layer 31 (or 41) and the dashed frame in fig. c (or fig. d). The second peripheral circuit region further includes a plurality of second signal leads 32 (or 42), and the plurality of second electrodes 31 are electrically connected to the plurality of second signal leads 32, respectively. A second-type electrode 31 is electrically connected to a second signal lead 32 (or a second-type electrode 41 is electrically connected to a second signal lead 42), and thus a plurality of second signal leads 42 are formed to be gathered in a certain area of at least one side surface (which may be an upper side, a lower side, a left side or a right side of the touch device) of the second peripheral circuit area to be connected to the signal conditioning chip, so as to connect the second-type electrode 31 (or 41) with the signal conditioning chip.

It should be noted that the first signal lead and the second signal lead are only for convenience of distinction, and may be substantially the same type or the same type of signal lead, and for the related description of the signal leads, please refer to the description of the embodiment in fig. 1 for details, and no further description is provided herein for avoiding repetition.

Therefore, the second-type electrodes are arranged into at least two layers, so that the number of signal leads corresponding to each layer is reduced. Meanwhile, the plurality of second signal leads are collected on at least one side of the second peripheral circuit area, so that the edge width of the whole touch device is reduced.

In an embodiment of the present application, the plurality of first signal leads are distributed on a first side of the first peripheral circuit area adjacent to the first type of touch sensing area, the first side is provided with a wire collecting portion, and the other ends of the plurality of first signal leads are collected in the at least one wire collecting portion and electrically connected to the signal conditioning chip.

Specifically, referring to fig. 8, the first-type electrode layer 1 (or 2) includes a first side, a second side, a third side, and a fourth side that are adjacent in this order, wherein the first side and the third side are opposite, and the second side and the fourth side are opposite. And a plurality of first type electrodes 11 (or 21) included in the first type touch sensing area extend from the first side to the third side (i.e. the first direction a). For example, the first side may be the left side of the orientation shown in fig. 8.

The two stacked first-type electrode layers each include a first peripheral line region (i.e., a portion between a frame and a dotted line frame of the first-type electrode layer 1 (or 2) in fig. (a) or (b)) and a first-type touch sensing region. The first peripheral circuit region includes a plurality of first signal leads 12 (or 22). The first signal leads 12 (or 22) are collected at a first side or a third side of the first peripheral circuit area near one end of the first type of touch sensing area. The first side (or third side) of the first perimeter route section is provided with a wire concentration portion, for example, the wire concentration portion may be disposed to the left of the orientation of the first side as shown in fig. 3.

The line concentration part can be a concentration part of a plurality of signal leads on the first side, one end of each first signal lead is electrically connected with the plurality of first electrodes, and the other end of each first signal lead is concentrated on the line concentration part and is electrically connected with the signal regulating chip. The specific distribution positions of the plurality of first signal leads are not particularly limited, and the first signal leads can be flexibly arranged according to actual conditions.

There may be 1 line concentration part, which is located in the middle of the first type of touch sensing area, for example, fig. 8. The number of the line concentration parts may be 2, 3, 4, or the like, and the number of the line concentration parts is not particularly limited in the embodiments of the present application. The plurality of line concentration parts can be distributed on the same side or on multiple sides of the first peripheral line area. The plurality of line concentration parts may be located at 1/4 and 3/4 of the first side, respectively, or each lead line may be equally distributed to the plurality of line concentration parts.

Illustratively, the outgoing mode of the signal leads of the two stacked first-type electrode layers is single-side concentrated outgoing. That is, the signal leads in the two electrode layers are all led out from the first side or the third side, and may also be led out from the second side or the fourth side, which is not specifically limited in this application.

Therefore, the first-type electrodes are arranged into at least two layers, so that the number of signal leads corresponding to each layer is reduced. Meanwhile, a single-side wire outlet mode is adopted, and compared with the non-layered electrode layer in the prior art, the edge width of the whole touch device is further reduced.

In an embodiment of the present application, the plurality of first signal leads are distributed on a first side and a second side of the first peripheral circuit area, which are adjacent to the first type of touch sensing area, and the first side and the second side are both provided with a wire collecting portion, and the other ends of the plurality of first signal leads are collected at the wire collecting portion and electrically connected to the signal adjusting chip.

Specifically, referring to fig. 1, the first-type electrode layer 1 (or 2) includes a first side, a second side, a third side, and a fourth side, which are adjacent in sequence, wherein the first side and the third side are opposite, and the second side and the fourth side are opposite. And a plurality of first type electrodes 11 (or 21) included in the first type touch sensing area extend from the first side to the third side (i.e. the first direction a). For example, the first side may be the left side of the orientation shown in fig. 1.

The two stacked first-type electrode layers each include a first peripheral line region (i.e., a portion between a frame and a dotted line frame of the first-type electrode layer 1 (or 2) in fig. (a) or (b)) and a first-type touch sensing region. The first peripheral circuit region includes a plurality of first signal leads 12 (or 22). The first signal leads 12 (or 22) are collected at the first side and the second side of the first peripheral circuit area near one end of the first type of touch sensing area. The first side and the second side of the first peripheral line area are provided with line concentration parts. The line concentration part can be a concentration part of a plurality of first signal leads on the first side and the second side, one end of each of the plurality of first signal leads is electrically connected with the plurality of first electrodes, and the other end of each of the plurality of first signal leads is collected on the line concentration part and is electrically connected with the signal regulating chip.

The arrangement may be that the plurality of first type electrodes 11 (or 21) are divided into two groups based on a symmetry axis parallel to the direction a in the first type touch sensing area, one group of the plurality of first type electrodes 11 collects the plurality of first signal leads 12 connected thereto at the line concentration portion on the second side, and the other group of the plurality of first type electrodes 11 collects the plurality of first signal leads 12 connected thereto at the line concentration portion on the first side, for example, the distribution of the leads in fig. 1 (a).

Alternatively, one group of the plurality of first type electrodes 21 collects the plurality of first signal leads 22 connected thereto at the line concentration portion on the fourth side, and another group of the plurality of first type electrodes 21 collects the plurality of first signal leads 22 connected thereto at the line concentration portion on the first side, for example, the lead arrangement in fig. 1(b), and the specific form of the lead arrangement is not limited in the embodiment of the present application.

There may be 2 (for example, fig. 1 and 7), 3, 4, and the like, and the number of the line concentration portions is not particularly limited in the embodiments of the present application. The plurality of line concentration parts can be distributed on the same side or on multiple sides of the first peripheral line area. For details, please refer to the descriptions of the above embodiments, which are not repeated herein to avoid repetition.

In the above embodiment, the plurality of first-type electrodes are grouped based on the symmetry axis, but the actual division manner may be as follows: 2 or 1: 3, etc., and the embodiments of the present application are not particularly limited thereto. The first-type electrodes may also be divided into three groups, four groups, and the like, which is not specifically limited in this embodiment of the application.

Therefore, the first-type electrodes are arranged into at least two layers, so that the number of signal leads corresponding to each layer is reduced. Meanwhile, the mode of outgoing lines at two sides is adopted, and compared with the mode of outgoing lines at a single side, the side width of the whole touch device is further reduced.

In an embodiment of the present application, the plurality of first-type electrodes are patterned metal mesh electrodes, and the plurality of first-type electrodes included in each of the at least two first-type electrode layers adopt a non-identical polygonal metal mesh pattern.

Specifically, the material of the metal grid electrode may be at least one of Cu, Ag, Al, Ti, or Ni, and the grid pattern of the metal grid layer may be rectangular, square, diamond, or other polygonal shapes, which is not limited in this embodiment. In addition, although the metal wires in the metal mesh are opaque to light, the metal wires cannot be felt by human vision due to the thin metal wires, that is, the metal mesh is transparent in human vision, and does not affect the transparency of the entire touch device.

In one embodiment, the first-type electrodes included in each of the at least two first-type electrode layers are in a non-identical polygonal metal mesh pattern.

The polygonal metal mesh pattern may be an irregular polygonal metal mesh pattern. The irregular polygon may be a non-regular polygon, i.e. the length of at least one side of the polygon is not equal to the length of the other sides, for example, fig. 9; or may be a polygon in which at least one side is a curve or a broken line, such as fig. 10; or the included angles in the polygon are different; or at least part of the metal lines in the patterned metal grid electrode are non-linear, such as in fig. 11 (the dotted lines indicate the arrangement of the metal lines), the application does not specifically limit the irregular polygon pattern.

The non-identical polygonal metal mesh patterns mentioned herein may refer to at least one of different included angles, different side lengths, and different degrees of bending of the sides of the polygons. That is, it is sufficient to ensure that the patterns of the first-type electrode layers are different from each other. Even if each layer is an irregular polygonal metal mesh pattern, the pattern is different between layers.

For example, two first electrode layers are included, wherein the side length of the polygonal metal mesh pattern of one first electrode layer is different from that of the polygonal metal mesh pattern of the other first electrode layer.

For another example, the electrode layer comprises two layers of the first type electrode layer, wherein the edge of the polygonal metal mesh pattern of one layer of the first type electrode layer is bent to a different degree than the edge of the polygonal metal mesh pattern of the other layer of the first type electrode layer.

According to the touch device, at least two first-type electrode layers are arranged to be the patterned metal grid electrodes through the thin metal wires, and therefore light transmittance of the touch device is improved.

Therefore, in the embodiment of the application, the at least two first electrode layers are arranged as the metal grid electrodes with different patterns, so that interference fringes are avoided, and the distinguishable characteristics of signals are increased.

In an embodiment of the present invention, the plurality of second signal leads are distributed on the first side and the fourth side of the second peripheral circuit region adjacent to the second type of touch sensing region, wherein the first side and the fourth side are both provided with a wire collecting portion, and the other ends of the plurality of second signal leads are collected at the wire collecting portion and electrically connected to the signal adjusting chip.

Specifically, referring to fig. 1, the second-type electrode layer 3 (or 4) includes a first side, a second side, a third side, and a fourth side, which are adjacent in this order, wherein the first side and the third side are opposite, and the second side and the fourth side are opposite. And a plurality of second-type electrodes 31 (or 41) extending from the second side to the fourth side (i.e. the second direction B) are included in the second-type touch sensing area. For example the second side may be the upper side of the orientation shown in figure 1.

The two stacked second electrode layers each include a second peripheral line region (i.e., a portion between a frame of the second electrode layer 3 (or 4) and the dotted line frame in fig. c or d) and a second touch sensing region. The second peripheral wiring section includes a plurality of second signal leads 32 (or 42). The second signal leads 32 (or 42) are collected at the first side (or the third side) and the fourth side of the second peripheral circuit area near one end of the second type touch sensing area. The first side (or the third side) and the fourth side of the second peripheral line region are provided with line concentration parts. The wire trap portion may be a collection of the plurality of second signal leads at the first side (or the third side) and the fourth side. One end of each second signal lead is electrically connected with the corresponding second electrode, and the other end of each second signal lead is gathered at the corresponding collecting part and connected with the signal conditioning chip.

For example, the second type electrodes 31 (or 41) are divided into two groups based on a symmetry axis parallel to the B direction in the second type touch sensing area, one group of the second type electrodes 31 collects the second signal leads 32 connected thereto on the first side, the other group of the second type electrodes 31 collects the second signal leads 32 connected thereto on the fourth side, and the first side and the fourth side are both provided with a wire collecting portion, such as the lead arrangement in fig. 1 (c).

Or one group of the plurality of second-type electrodes 41 may collect the plurality of second signal leads 42 connected thereto on the fourth side, another group of the plurality of second-type electrodes 41 may collect the plurality of second signal leads 42 connected thereto on the third side, and the third side and the fourth side are both provided with one collecting portion, for example, the lead arrangement in fig. 1(d), and the embodiment of the present application does not limit the specific form of the lead arrangement.

In the above embodiment, the plurality of second-type electrodes are grouped based on the symmetry axis, but the actual division manner may be as follows: 2 or 1: 3, etc., and the embodiments of the present application are not particularly limited thereto. The second type of electrodes may also be divided into three groups, four groups, etc., which is not specifically limited in the embodiments of the present application.

It should be appreciated that this solution requires four-sided wire-outgoing for the entire touch panel. The first type of electrodes has four sets of line concentration portions in total and are distributed on three sides, for example, see "second side, fourth side + first side or third side" in fig. 1(a) and (b). The same applies to the second type of electrodes, which comprise four sets of wire concentration portions and are distributed on three sides, for example, see "first side, third side + second side or fourth side" in fig. 1(c) and (d).

Therefore, the first-type electrodes are arranged into at least two layers, so that the number of signal leads corresponding to each layer is reduced. Meanwhile, the whole touch device adopts a three-edge outgoing line mode, and compared with a two-edge outgoing line mode, the edge width of the whole touch device is further reduced.

In an embodiment of the present invention, the plurality of second signal leads are distributed on a fourth side of the second peripheral circuit region adjacent to the second type of touch sensing region, the fourth side is provided with a wire collecting portion, and the other ends of the plurality of second signal leads are collected in the at least one wire collecting portion and electrically connected to the signal conditioning chip.

Specifically, referring to fig. 8, the second-type electrode layer 3 (or 4) includes a first side, a second side, a third side, and a fourth side that are adjacent in this order, wherein the first side and the third side are opposite, and the second side and the fourth side are opposite. And a plurality of second type electrodes 31 (or 41) extending from the second side to the fourth side (i.e. the second direction B) are included in the second type touch sensing area. For example, the fourth side may be the lower side of the orientation shown in fig. 8.

The two stacked second electrode layers each include a second peripheral line region (i.e., a portion between a frame of the second electrode layer 3 (or 4) and the dotted line frame in fig. c or d) and a second touch sensing region. The second peripheral wiring section includes a plurality of second signal leads 32 (or 42). The second signal leads 32 (or 42) are collected at the second side or the fourth side of the second peripheral circuit area. The second side or the fourth side of the second peripheral line area is provided with a line concentration part. The wire trap portion may be a collection of a plurality of signal leads at the second side (or fourth side). One end of each second signal lead is electrically connected with the corresponding second electrode, and the other end of each second signal lead is gathered in the corresponding wire collecting part and is electrically connected with the signal adjusting chip. The specific distribution positions of the plurality of second signal leads 32 (or 42) are not particularly limited in the embodiment of the present application, and can be flexibly set according to actual situations.

In one example, the signal leads of the two stacked second electrode layers are led out in a single-side concentrated manner. Namely, the signal leads in the two electrode layers are all led out from the second side or the fourth side.

It should be understood that only two sides of the entire touch device are required to be wired. That is, the first-type electrode has only 2 sets of collecting parts, for example, the collecting areas of the plurality of first signal leads on the first side in fig. 8 (a) and (b), and are distributed on the same side. The first type of electrode may be wired on only the first side or the third side. The same applies to the second type of electrodes, which have 2 sets of collecting portions, such as the collecting regions of the second signal leads on the fourth side in fig. 8 (c) and (d), and are distributed on the same side. The second type of electrode may be wired only on the second side or on the fourth side.

Therefore, the first-type electrodes are arranged into at least two layers, so that the number of signal leads corresponding to each layer is reduced. Meanwhile, the whole touch device adopts a mode of outgoing wires from two sides, and compared with the non-layered electrode layer in the prior art, the edge width of the whole touch device is further reduced.

In an embodiment of the present application, the plurality of second-type electrodes are patterned metal mesh electrodes, and the plurality of second-type electrodes included in each of the at least two second-type electrode layers adopt a non-identical polygonal metal mesh pattern.

Specifically, the metal grid structure of the second type of electrode is substantially the same as the metal grid structure of the first type of electrode, and for details, refer to the description of the above embodiments, and are not repeated herein.

Therefore, in the embodiment of the application, the at least two second electrode layers are arranged to be the metal grid electrodes with different patterns, so that interference fringes are avoided, and the distinguishable characteristics of signals are increased.

In an embodiment of the present application, the signal conditioning chip is an independent chip, and is respectively connected to the touch panel and the touch chip of the touch device; or the signal regulating chip is integrated in a flexible circuit board, and the flexible circuit board is used for connecting the touch panel and the touch chip; or, the signal conditioning chip is integrated in the touch chip.

Specifically, the signal conditioning chip may be an independent chip, one end of which is electrically connected to the touch panel, and the other end of which is electrically connected to the touch chip of the touch device. It should be noted that, in this embodiment, the signal determination related to the setting of the capacitance threshold may be completed in the independent chip, and the touch chip itself does not need to be improved, but since the signal conditioning chip is an independent structure, the signal conditioning chip may occupy some more space in terms of hardware than the conventional structure.

The signal conditioning chip may also be integrated in a Flexible Printed Circuit (FPC), that is, one end of the signal conditioning chip is electrically connected to the touch panel, and the other end of the signal conditioning chip is electrically connected to the touch chip. The signal conditioning chip may also be integrated in the touch chip, and the form of the signal conditioning chip is not particularly limited in the embodiments of the present application. It should be noted that, in the above two embodiments, both the signal conditioning chip and the touch device are integrated in an existing component, and only the flexible circuit board or the touch chip needs to be improved, so that the occupied space of the touch device is basically unchanged because the signal conditioning chip is integrated in the existing component.

Therefore, the embodiment of the application is not limited to the presentation form of the signal conditioning chip, so that the signal conditioning chip is more flexibly arranged to meet the requirements of different touch devices.

Furthermore, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby the features defining "first", "second" may explicitly or implicitly include at least one such feature.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modifications, equivalents and the like that are within the spirit and principle of the present application should be included in the scope of the present application.

Claims (10)

1. A touch device, comprising:

the touch panel is provided with a touch area and comprises at least two first electrode layers and at least one second electrode layer which are arranged in a stacked mode, the first electrode layers comprise first touch sensing areas, the touch areas are filled with orthographic projections, on the touch areas, of the first touch sensing areas respectively arranged on the at least two first electrode layers in a splicing mode, the second electrode layers comprise second touch sensing areas, and the at least two first electrode layers and the at least one second electrode layer form mutual capacitance structures respectively;

and the signal adjusting chip is connected with the touch panel and used for receiving the induction capacitance values output by the touch panel and judging the effectiveness of the induction capacitance values respectively based on the set capacitance threshold values corresponding to the mutual capacitance structures.

2. The touch device of claim 1, wherein the set capacitance threshold is associated with an electrode spacing between the mutual capacitance structures, and/or wherein the set capacitance threshold is associated with a distance from a corresponding upper electrode layer forming the mutual capacitance structures to the surface of the touch device.

3. The touch device of claim 1, wherein the at least two set capacitance thresholds comprise a first set capacitance threshold, a second set capacitance threshold, a third set capacitance threshold, and a fourth set capacitance threshold,

the at least two first electrode layers comprise a first electrode layer and a second electrode layer, the at least one second electrode layer comprises a third electrode layer and a fourth electrode layer, the first electrode layer, the third electrode layer, the second electrode layer and the fourth electrode layer are sequentially stacked,

a first mutual capacitance structure formed by the first electrode layer and the third electrode layer corresponds to the first set capacitance threshold value;

a second mutual capacitance structure formed by the second electrode layer and the third electrode layer corresponds to the second set capacitance threshold;

a third mutual capacitance structure formed by the second electrode layer and the fourth electrode layer corresponds to a third set capacitance threshold value;

a fourth mutual capacitance structure formed by the first electrode layer and the fourth electrode layer corresponds to the fourth set capacitance threshold.

4. The touch device according to claim 1, wherein the at least two set capacitance thresholds comprise a fifth set capacitance threshold and a sixth set capacitance threshold, the at least two first electrode layers comprise a fifth electrode layer and a sixth electrode layer, the at least one second electrode layer comprises a seventh electrode layer, and the fifth electrode layer, the seventh electrode layer and the sixth electrode layer are sequentially stacked,

a fifth mutual capacitance structure formed by the fifth electrode layer and the seventh electrode layer corresponds to the fifth set capacitance threshold;

a sixth mutual capacitance structure formed by the seventh electrode layer and the sixth electrode layer corresponds to the sixth set capacitance threshold.

5. The touch device of claim 1, wherein the first type of touch sensing area comprises a plurality of first type electrodes extending along a first direction, the second type of touch sensing area comprises a plurality of second type electrodes extending along a second direction,

the first-class electrode layer further comprises a first peripheral line area adjacent to the touch area, wherein the first peripheral line area comprises a plurality of first signal leads, one ends of the first signal leads are electrically connected with the first-class electrodes, and the other ends of the first signal leads are distributed on at least one side of the first peripheral line area and are electrically connected with the signal adjusting chip;

the second electrode layer further includes a second peripheral line region adjacent to the touch region, wherein the second peripheral line region includes a plurality of second signal leads, one end of each of the plurality of second signal leads is electrically connected to the plurality of second electrodes, and the other end of each of the plurality of second signal leads is distributed on at least one side of the second peripheral line region and is electrically connected to the signal conditioning chip.

6. The touch device of claim 5, wherein the first signal leads are distributed on a first side of the first peripheral circuit area adjacent to the first type of touch sensing area, and the first side is provided with a wire collecting portion, and the other ends of the first signal leads are collected at the wire collecting portion and electrically connected to the signal conditioning chip; alternatively, the first and second electrodes may be,

the first signal leads are distributed on a first side and a second side, adjacent to the first touch sensing area, of the first peripheral circuit area, wire collecting portions are arranged on the first side and the second side, and the other ends of the first signal leads are collected on the wire collecting portions and electrically connected with the signal adjusting chip.

7. The touch device of claim 6, wherein the first electrodes are patterned metal mesh electrodes, and the first electrodes included in each of the at least two first electrode layers are not identical polygonal metal mesh patterns.

8. The touch device of claim 5, wherein the second signal leads are distributed on a fourth side of the second peripheral circuit area adjacent to the second touch sensing area, and the fourth side has a line concentration portion, and the other ends of the second signal leads are collected at the line concentration portion and electrically connected to the signal conditioning chip; alternatively, the first and second electrodes may be,

the plurality of second signal leads are distributed on a first side and a fourth side of the second peripheral circuit area, which are adjacent to the second type touch sensing area, the first side and the fourth side are provided with wire concentration parts, and the other ends of the plurality of second signal leads are collected in the wire concentration parts and are electrically connected with the signal adjusting chip.

9. The touch device of claim 8, wherein the second electrodes are patterned metal mesh electrodes, and the second electrodes included in each of the at least two second electrode layers are not identical polygonal metal mesh patterns.

10. The touch device of claim 1, wherein the signal conditioning chip is an independent chip connected to the touch panel and the touch chip of the touch device, respectively; alternatively, the first and second electrodes may be,

the signal adjusting chip is integrated in a flexible circuit board, and the flexible circuit board is used for connecting the touch panel and the touch chip; alternatively, the first and second electrodes may be,

the signal adjusting chip is integrated in the touch control chip.

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