Touchpad with spliced patterns and touch equipment

Abstract

The utility model discloses a touchpad with spliced patterns and touch equipment, relates to the technical field of electronic touchpads, and solves the technical problem of poor consistency of data of the whole touchpad on a leather sheath keyboard. The touch panel comprises a first wiring area and a first device area which are arranged on a touch layer; a plurality of first induction electrode blocks, a plurality of first driving electrode blocks and a plurality of suspension blocks are arranged in the first wiring area; a plurality of second sensing electrode blocks and a plurality of second driving electrode blocks are arranged in the first device area, each second sensing electrode block is of an S-shaped structure, and every two second driving electrode blocks are meshed on the two sides of the corresponding second sensing electrode block to form a second electrode node unit. According to the utility model, the data consistency of the whole touchpad is good, and the product detection yield is high.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic touch panels, in particular to a touch panel with a spliced ​​pattern and a touch control device. Background Art

[0002] With the development of NFC (Near Field Communication) technology and the improvement of user experience requirements, Windows laptop touchpads have been able to integrate NFC technology. NFC is a contactless identification and interconnection technology that can perform short-range wireless communication between mobile devices, consumer electronics, PCs and smart control tools, and its application scope is becoming more and more extensive. With the improvement of user experience requirements, most tablets can be used with leather keyboards. Some leather keyboard products will reserve a touchpad on the leather keyboard as a touch area, similar to the touchpad on a laptop computer, to achieve the operation function of replacing the mouse. At present, the touchpad on the leather keyboard is gradually integrating NFC technology.

[0003] The screen size of a tablet is generally smaller than that of a laptop, so the touchpad on its keyboard is also relatively smaller than that of a laptop. In order to make the user's touch experience smoother, the touchpad cover is often replaced by a glass cover instead of a Mylar sheet. The leather keyboard itself is thin, and the glass cover also has certain thickness requirements. Considering the thickness of the leather keyboard, the thickness of the touch layer of the touchpad needs to be thinned.

[0004] Integrating NFC technology on a small-sized double-sided touch panel requires consideration of the placement space of the NFC chip, the design space of the NFC chip circuit, and the signal divergence distance of the NFC antenna. The size of the NFC antenna is directly related to its signal divergence distance. For example, a smaller coil has a shorter card reading distance and a relatively weaker signal, while a larger coil has an increased card reading distance and a stronger coil signal. Therefore, it is necessary to lay out NFC chip circuits and as large an NFC coil as possible on a small-sized double-sided touch panel to increase the signal divergence distance and signal strength of the NFC antenna. However, this will limit the layout space of the touch chip sensing channel, and these circuits must also avoid the structural holes on the touch panel. Therefore, if Figure 1 As shown in the figure, the sensing channel lines can only be laid out on the electrode blocks of one or two driving channels, resulting in excessive overlapping routing area between the lines of the same sensing channel and the electrode blocks of the same driving channel, resulting in poor consistency of node data on the entire board, affecting the reduction of production and test yield.

[0005] In the process of implementing the utility model, the applicant found that there are at least the following problems in the prior art:

[0006] Since the touchpad on the leather keyboard is relatively thin, after integrating NFC technology, the wiring space on the touchpad is limited, resulting in excessive overlapping routing area between the lines of the same sensing channel and the electrode blocks of the same driving channel, which in turn leads to poor data consistency across the entire board. Utility Model Content

[0007] The purpose of the utility model is to provide a touchpad with a spliced ​​pattern to solve the technical problem of poor data consistency of the whole touchpad on the leather keyboard in the prior art. The preferred technical solution among the many technical solutions provided by the utility model can produce many technical effects as described below.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] The utility model provides a touch panel with a spliced ​​pattern, comprising a first wiring area and a first device area arranged on a touch layer; a plurality of first sensing electrode blocks, a plurality of first driving electrode blocks and a plurality of suspension blocks are arranged in the first wiring area, and every two of the first driving electrode blocks are engaged with each other at both sides of the first sensing electrode block to form a first electrode node unit, and the suspension block is located in the middle of the first electrode node unit; a plurality of second sensing electrode blocks and a plurality of second driving electrode blocks are arranged in the first device area, and the shape of the second sensing electrode block is an "S"-shaped structure, and every two of the second driving electrode blocks are engaged with each other at both sides of the second sensing electrode block to form a second electrode node unit.

[0010] Preferably, the suspension block is located in a closed area in the middle of the first sensing electrode block to form a "U"-shaped structure, or is located between the first sensing electrode block and the first driving electrode block to form a "Field"-shaped structure.

[0011] Preferably, the touch panel further comprises a device layer stacked with the touch layer; the device layer comprises a second routing area and a second device area; the second routing area is used for arranging sensing electrode block circuits, and is overlapped with the first routing area; the second device area is used for arranging touch devices and their device routings, and is overlapped with the first device area; wherein the sensing electrode block circuits comprise circuits of a first sensing electrode block and circuits of a second sensing electrode block.

[0012] Preferably, the touch device comprises a touch chip, an NFC chip and an NFC coil; the NFC coil is arranged in a surrounding manner in the middle of the device layer; the touch chip and the NFC chip are respectively arranged at two sides of the device layer.

[0013] Preferably, the first sensing electrode blocks are longitudinally arranged in the first wiring area to form a first channel; the second sensing electrodes are longitudinally arranged in the first device area to form a second channel; the first channel and the second channel in each column are connected to form a sensing electrode channel longitudinally arranged in the touch layer.

[0014] Preferably, the first channel and the second channel in each column are connected reinforcement structures.

[0015] Preferably, the first driving electrode blocks and the second driving electrode blocks are respectively arranged horizontally on the touch layer to form driving electrode channels; and the two first driving electrode blocks and the two second driving electrode blocks in each of the first electrode node unit and the second electrode node unit are connected through a conductive via.

[0016] Preferably, the first driving electrode blocks of two left and right adjacent first electrode node units are of a connecting rib structure; and the second driving electrode blocks of two left and right adjacent second electrode node units are of a connecting rib structure.

[0017] Preferably, there are at least 10 connection modes between the two second driving electrode blocks in the second electrode node unit.

[0018] A touch device comprises a touch panel with any of the above-mentioned spliced ​​patterns.

[0019] Implementing one of the above technical solutions of the utility model has the following advantages or beneficial effects:

[0020] The utility model changes the matrix of the traditional touch panel pattern and splices two different patterns together to meet the different capacitive coupling requirements of the routing area and the device area. For the area with dense routing, a pattern of inserting a suspension block in the electrode node unit is adopted, which can reduce the overlapping area of ​​the driving electrode block and the sensing point block line, and meet the long-distance overlapping routing of the lines of several sensing electrode blocks on the same driving electrode channel, thereby ensuring the data consistency of the entire touch panel and improving the production and test yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0022] Figure 1 It is a schematic structural diagram of a touch panel with a spliced ​​pattern according to a first embodiment of the utility model;

[0023] Figure 2 It is a schematic structural diagram of 9 first electrode node unit patterns in the first embodiment of the present utility model;

[0024] Figure 3 It is a schematic structural diagram of 9 second electrode node unit patterns in the first embodiment of the present utility model;

[0025] Figure 4 It is a schematic structural diagram of the existing touch panel of the present utility model;

[0026] Figure 5 It is a schematic structural diagram of a single second electrode node unit pattern in the first embodiment of the present utility model;

[0027] Figure 6 It is a schematic structural diagram of the first electrode node unit of the "return" - shaped structure in the first embodiment of the present utility model;

[0028] Figure 7 It is a schematic structural diagram of the first electrode node unit of the "field" - shaped structure in the first embodiment of the present utility model;

[0029] Figure 8 It is a schematic structural diagram of the double - layer touch panel in the second embodiment of the present utility model;

[0030] Fig. 9 It is a partial schematic structural diagram of the touch panel with a spliced pattern in the first embodiment of the present utility model;

[0031] In the figure: 1. First routing area; 11. First electrode node unit; 111. First sensing electrode block; 112. First driving electrode block; 113. Suspended block; 121. First driving block; 122. Second driving block; 2. First device area; 21. Second electrode node unit; 211. Second sensing electrode block; 212. Second driving electrode block; 3. Second routing area; 31. Induction electrode block line; 4. Second device area; 41. Touch chip; 42. NFC chip; 43. NFC coil; 44. Device routing; 5. Conductive via. Detailed implementation manners

[0032] In order to make the purpose, technical solutions and advantages of the utility model clearer, the various exemplary embodiments to be described below will refer to the corresponding drawings, which constitute a part of the exemplary embodiments, wherein various exemplary embodiments that may be used to implement the utility model are described. Unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation methods described in the following exemplary embodiments do not represent all implementation methods consistent with the present disclosure. It should be understood that they are only examples of processes, methods, and devices that are consistent with some aspects of the utility model disclosed as detailed in the attached claims, and other embodiments may also be used, or the embodiments listed herein may be modified in structure and function without departing from the scope and essence of the utility model.

[0033] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", etc. indicate the orientation or position relationship based on the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the elements referred to must have a specific orientation, be constructed and operated in a specific orientation. The terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. The term "multiple" means two or more. The terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a communication connection, a direct connection, an indirect connection through an intermediate medium, and can be the internal connection of two elements or the interaction relationship between two elements. The term "and / or" includes any and all combinations of one or more related listed items. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0034] In order to illustrate the technical solution of the present invention, a specific embodiment is provided below, in which only the parts related to the embodiment of the present invention are shown.

[0035] Embodiment 1:

[0036] like Figure 1-3As shown, the utility model provides a touch panel with a spliced ​​pattern, including a first wiring area 1 and a first device area 2 arranged on a touch layer; a plurality of first sensing electrode blocks 111, a plurality of first driving electrode blocks 112 and a plurality of suspension blocks 113 are arranged in the first wiring area 1, and every two first driving electrode blocks 112 are engaged on both sides of the first sensing electrode block to form a first electrode node unit 11, and the suspension block 113 is located in the middle of the first electrode node unit 11; a plurality of second sensing electrode blocks 211 and a plurality of second driving electrode blocks 212 are arranged in the first device area 2, and the shape of the second sensing electrode block 211 is an "S"-shaped structure, and every two second driving electrode blocks 221 are engaged on both sides of the second sensing electrode block 211 to form a second electrode node unit 21. This embodiment changes the traditional touch panel that only uses a matrix of one pattern, and sets the first wiring area 1 and the first device area 2, and sets different pattern matrices of the two areas, so as to cope with different capacitive coupling situations, which will be described in detail below.

[0037] This embodiment is applied to electronic touch products, and is particularly suitable for ultra-thin double-layer touch panels with NFC functions. Figure 4 As shown in FIG. 1 , the existing whole-plate pattern adopts a sensing electrode block with an “S”-shaped structure. The advantage of this pattern is that the location of the conductive via 5 is flexible, such as Figure 5 As shown, there are at least 10 bridge connection modes between two driving electrode blocks in each electrode node, which can be flexibly set according to wiring requirements to increase wiring space. However, this pattern also has disadvantages in ultra-thin touch panels with smaller sizes, such as Figure 3As shown, for a second electrode node unit 21, the narrowest position of the driving electrode block is 0.54mm, the widest position is 3.32mm, and the maximum gap of a driving electrode block is 0.7mm. When the sensing electrode block line 31 is laid out, more than a dozen nodes will be routed continuously, and the width of the line will be much greater than 0.7mm, which will make the routing area of ​​the sensing electrode block highly overlap with the driving electrode block. According to the parallel plate capacitor principle formula = ε*S / D, ε is the dielectric constant of the touch panel, S is the overlapping area of ​​the driving electrode block and the sensing electrode block line 31, and D is the thickness of the touch panel. The thinner the thickness D of the touch panel, the larger the parallel plate capacitance. The existing driving electrode block and the sensing electrode block line 31 have a larger overlapping area, which further increases the parallel plate capacitance, which will interfere with the normal coupling capacitance of the driving electrode block and the sensing electrode block, resulting in poor consistency of the capacitance data of the entire panel. Therefore, this embodiment changes the matrix of the traditional touch panel pattern and splices two different patterns together to adapt to the different capacitive coupling requirements of the routing area and the device area. For the area with dense routing, a pattern of inserting the suspension block 113 in the electrode node unit is adopted, which can reduce the overlapping area of ​​the driving electrode block and the sensing point block line, and meet the long-distance overlapping routing of several sensing electrode block lines 31 on the same driving electrode channel, thereby ensuring the data consistency of the entire touch panel and improving the production and test yield.

[0038] As an optional implementation, the suspension block 113 of the first electrode node unit 11 is located in the closed area in the middle of the first sensing electrode block 111, forming a "U"-shaped structure, or is located between the first sensing electrode block 111 and the first driving electrode block 112, forming a "field"-shaped structure; the material of the suspension block 113 is copper. The first driving electrode block 112 includes a first driving block 121 and a second driving block 122, and the distance between the first driving block 121 and the second driving block 122 is 2mm. Figure 6 As shown, the first electrode node unit 11 is a "U"-shaped structure, and a closed area is formed in the middle of the first sensing electrode block 111, and the suspension block 113 is arranged in the closed area. The distance between the first driving block 121 and the second driving block 122 is 2mm, which is enough for the sensing electrode block line 31 to pass through. The sensing electrode block line 31 can only overlap with the narrowest part of the first driving electrode block 112, and the narrowest part of the first driving electrode block 112 is 0.2mm. Even if more than a dozen first driving electrode blocks 112 are routed continuously, the overlapping area can be minimized to the maximum extent, thereby reducing the influence of abnormal coupling capacitance and ensuring the consistency of capacitance data. Figure 7As shown in the figure, the first electrode node unit 11 has a "field" - shaped structure. In this structure, the first induction electrode block 111 is in a "king" - shaped pattern, and the four floating blocks 113 are located between the first induction electrode block 111 and the first driving electrode block 112, forming a "field" - shaped structure. The distance between the first driving block 121 and the second driving block 122 of this pattern is 2.29, and the narrowest width of the first driving electrode block 112 is 0.45. Similarly to the "hui" - shaped structure, it can also effectively reduce the overlapping area between the induction electrode block line 31 and the first driving electrode block 112, thereby reducing the abnormal coupling capacitance. The appropriate electrode pattern can be selected according to the actual wiring and device settings.

[0039] As an alternative implementation, as Figure 8 shown, the touch panel further includes a device layer stacked with the touch layer; the device layer includes a second wiring area 3 and a second device area 4; the second wiring area 3 is used for laying the induction electrode block lines 31, which is overlapped with the first wiring area 1; the second device area 4 is used for laying the touch devices and their device traces 44, which is overlapped with the first device area 2; among them, the induction electrode block lines 31 include the lines of the first induction electrode block 111 and the lines of the second induction electrode block 211; the device traces 44 include the traces of the NFC chip 42, the NFC coil 43, etc. The touch devices include a touch chip 41, an NFC chip 42, and an NFC coil 43; the NFC coil 43 is arranged around the middle position of the device layer; the touch chip 41 and the NFC chip 42 are respectively arranged on both sides of the device layer. Since the touch panel with NFC function has many devices, and the size of the touch panel of the leather case keyboard is also small, the wiring space is very limited, and the wiring difficulty increases accordingly. Therefore, the second device area 4 corresponds to the first device area 2 of the touch layer, and the induction electrode block adopts a pattern of "S" structure. This pattern has flexible wiring. There are at least 10 connection methods between the two second driving electrode blocks 221 in the second electrode node unit 21, which can increase the wiring space, reduce the wiring difficulty of the multi - device small - size touch panel, and at the same time reduce the probability of incorrect layout of the touch panel devices due to complex wiring and low fault tolerance.

[0040] As an alternative implementation, the first induction electrode blocks 111 are arranged longitudinally in the first wiring area 1 to form a first channel; the second induction electrodes are arranged longitudinally in the first device area 2 to form a second channel; each column of the first channel 51 and the second channel 52 are connected to form an induction electrode channel 5 arranged longitudinally in the touch layer. As Fig. 9 shown, each column of the first channel and the second channel are of a connecting rib structure. In this way, the first channel and the second channel are naturally spliced together to form the induction electrode channel, and the splicing method is simple, which is convenient for mass production.

[0041] As an optional implementation, the first driving electrode block 112 and the second driving electrode block 221 are arranged horizontally on the touch layer to form a driving electrode channel 6; the two first driving electrode blocks 112 and the second driving electrode blocks 221 in each first electrode node unit 11 and the second electrode node unit 21 are connected through a conductive via 5; each first driving electrode block 112 and the second driving electrode block 221 is provided with a conductive via 5, and the position can be flexibly set according to the wiring requirements. The first driving electrode blocks 112 of the two first electrode node units 11 adjacent to each other on the left and right are a connecting rib structure; the second driving electrode blocks 221 of the two second electrode node units 21 adjacent to each other on the left and right are a connecting rib structure.

[0042] As shown in Table 1, the data of the capacitance test using the existing touch panel can be seen that the data in the two rows of TX1 and TX2 are more than 2000 larger than the data in other places. This is because the lines of the sensing electrode block are concentrated on the top, which will produce abnormal coupling data, making the data of the two rows of TX1 and TX2 larger. If in the production detection stage, the high data of these two rows will cause detection alarms, resulting in low detection yield. As shown in Table 2, the data of the capacitance test using the touch panel of this embodiment, compared with Table 1, the data of the whole board are all around 10000, and the consistency of the data is good; because the touch layer below the device layer of the sensing electrode block line 31 in this embodiment adopts a "return"-shaped structure pattern, so that the overlapping area of ​​the sensing electrode block line 31 and the driving electrode block is reduced, thereby effectively reducing the interference of abnormal coupling capacitance, ensuring the consistency of capacitance data, and thus improving the yield. The capacitance test data table of the existing touch panel is shown in Table 1; the capacitance test data table of the touch panel using the splicing pattern is shown in Table 2.

[0043] Table 1

[0044]

[0045] Table 2

[0046]

[0047] The embodiment is only a special case and does not indicate that the present invention is implemented in such a way.

[0048] Embodiment 2:

[0049] The difference between the second embodiment and the first embodiment is that: a touch device includes a touch panel with a spliced ​​pattern as described in any one of the first embodiments. The touch device includes a leather keyboard, a laptop computer, etc. The touch device uses the touch panel as described in the first embodiment, and the touch panel uses a spliced ​​electrode pattern, which can not only make the touch panel ultra-thin, but also has good consistency of capacitance data, sensitive touch, and good user experience.

[0050] The above description is only the preferred embodiment of the present invention. Those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the guidance of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the protection scope of the present invention.

Claims

1. A touch panel with a spliced ​​pattern, characterized in that: The invention comprises a first wiring area (1) and a first device area (2) arranged on a touch layer; a plurality of first sensing electrode blocks (111), a plurality of first driving electrode blocks (112) and a plurality of suspension blocks (113) are arranged in the first wiring area (1), and every two of the first driving electrode blocks (112) are engaged with the two sides of the first sensing electrode block (111) to form a first electrode node unit (11), and the suspension block (113) is located in the middle of the first electrode node unit (11); a plurality of second sensing electrode blocks (211) and a plurality of second driving electrode blocks (212) are arranged in the first device area (2), and the second sensing electrode blocks (211) are in an "S"-shaped structure, and every two of the second driving electrode blocks (212) are engaged with the two sides of the second sensing electrode block (211) to form a second electrode node unit (21).

2. A touch panel with a spliced ​​pattern according to claim 1, characterized in that: The suspension block (113) is located in a closed area in the middle of the first sensing electrode block (111) to form a "U"-shaped structure, or is located between the first sensing electrode block (111) and the first driving electrode block (112) to form a "Field"-shaped structure.

3. The touch panel with a spliced ​​pattern according to claim 1, characterized in that: The touch panel further comprises a device layer stacked with the touch layer; the device layer comprises a second routing area (3) and a second device area (4); the second routing area (3) is used for arranging a sensing electrode block circuit (31) and is arranged overlapping with the first routing area (1); the second device area (4) is used for arranging a touch device and its device routing (44) and is arranged overlapping with the first device area (2); wherein the sensing electrode block circuit (31) comprises a circuit of a first sensing electrode block (111) and a circuit of a second sensing electrode block (211).

4. The touch panel with a spliced ​​pattern according to claim 3, characterized in that: The touch device comprises a touch chip (41), an NFC chip (42) and an NFC coil (43); the NFC coil (43) is arranged in a surrounding manner in the middle of the device layer; and the touch chip (41) and the NFC chip (42) are respectively arranged at two side positions of the device layer.

5. The touch panel with a spliced ​​pattern according to claim 1, characterized in that: The first sensing electrode blocks (111) are longitudinally arranged in the first wiring area (1) to form a first channel; the second sensing electrodes are longitudinally arranged in the first device area (2) to form a second channel; the first channel and the second channel in each column are connected to form a sensing electrode channel longitudinally arranged in the touch layer.

6. The touch panel with a spliced ​​pattern according to claim 5, characterized in that: The first channel and the second channel of each column are connected reinforcement structures.

7. The touch panel with a spliced ​​pattern according to claim 1, characterized in that: The first driving electrode block (112) and the second driving electrode block (212) are respectively arranged horizontally on the touch layer to form a driving electrode channel; the two first driving electrode blocks (112) and the second driving electrode blocks (212) in each of the first electrode node units (11) and the second electrode node units (21) are connected through a conductive via (5).

8. The touch panel with a spliced ​​pattern according to claim 7, characterized in that: The first driving electrode blocks (112) of two left and right adjacent first electrode node units (11) are of a connecting rib structure; and the second driving electrode blocks (212) of two left and right adjacent second electrode node units (21) are of a connecting rib structure.

9. The touch panel with a spliced ​​pattern according to claim 7, characterized in that: There are at least 10 connection modes between the two second driving electrode blocks (212) in the second electrode node unit (21).

10. A touch device, characterized in that: A touch panel with a spliced ​​pattern comprising any one of claims 1-9.

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