Touch panel with compensation structure and touch device

Abstract

The utility model discloses a touchpad with a compensation structure and touch equipment, relates to the technical field of electronic touchpads, and solves the technical problem that the data consistency and uniformity of the whole touchpad are poorer due to the fact that the touchpad has touch jump points when positioning holes are formed in the touchpad. The touch panel comprises a touch layer provided with a plurality of touch nodes; a plurality of positioning through holes are formed in the touch layer; a first compensation block is arranged on the outer ring of the positioning through hole; a second compensation block is arranged above the positioning through hole, and the second compensation block is used for being mutually coupled with the first compensation block to generate coupling capacitance; each touch node comprises a driving electrode block and a sensing electrode block. According to the touch panel, the touch jump point problem does not exist, and the data consistency and uniformity of the whole panel are good.

Description

Technical Field

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

[0002] With the development of touchpad technology and the improvement of user experience requirements, touchpad technology integrating multi-touch function in laptops is becoming more and more widely used, such as in mobile devices, consumer electronics, PCs and smart control tools.

[0003] like Figure 1 As shown, the touch layer of a conventional touch panel is composed of multiple sensing channels 100 and multiple driving channels 200 arranged vertically and horizontally to form a touch operation area of ​​the entire panel. The intersection of the sensing channel 100 and the driving channel 200 forms a mutual capacitance node. A node is coupled with the sensing electrode block and the driving electrode block to form a capacitor, thereby realizing the touch function of the touch panel.

[0004] However, due to the different structures of the mechanical components of different types of laptop computers, when the touchpad and the mechanical components are installed, it is necessary to reserve several positioning holes 300 on the touchpad to facilitate installation with the positioning structure of the mechanical components; however, the positioning structure of the mechanical components is generally relatively large, and the corresponding positioning holes 300 on the touchpad are also relatively large, such as Figure 2 As shown, when the positioning hole 300 is located at the center of a node, the size of the positioning hole 300 almost occupies the size of a node pattern. Since the positioning hole 300 will destroy the original node pattern, there will be no sensing electrode block and driving electrode block in the area where the positioning hole 300 is located to generate coupling capacitance. This will indirectly lead to extremely weak or no touch signal at the node position where the positioning hole 300 is located. Due to the presence of background noise, the signal-to-noise ratio is poor. When the noise reaches a certain threshold, the touch coordinates will jump, resulting in a touch jump problem, which makes the data consistency and uniformity of the entire board poor.

[0005] In the process of implementing the present invention, the applicant discovered that the prior art has at least the following problems:

[0006] Providing positioning holes on the touch panel may cause the touch panel to have a touch point jump problem, resulting in poor data consistency and uniformity of the entire panel. Utility Model Content

[0007] The present invention aims to provide a touchpad and touch device with a compensation structure to address the prior art problem of positioning holes in touchpads causing touch point jumps, resulting in poor data consistency and uniformity across the entire touchpad. The various technical effects achieved by the preferred technical solution among the various technical solutions provided by the present invention are detailed below.

[0008] To achieve the above objectives, the present invention provides the following technical solutions:

[0009] The present invention provides a touch panel with a compensation structure, comprising a touch layer provided with a plurality of touch nodes; a plurality of positioning through holes are provided on the touch layer, and the positioning through holes penetrate the touch nodes; a first compensation block is provided on the outer circle of the positioning through holes; a second compensation block is provided above the positioning through holes, and the second compensation block is used to couple with the first compensation block to generate coupling capacitance; the touch nodes include a driving electrode block and a sensing electrode block.

[0010] Optionally, an insulating layer is stacked above the touch layer; an opening corresponding to the position of the positioning through hole is provided on the insulating layer, and drive windows are provided on both sides of the opening; the second compensation block covers the opening and the drive window; the second compensation block is connected to the drive electrode block located below through the drive windows on both sides of the opening.

[0011] Optionally, the shape of the driving window is the same as the shape and size of the driving electrode block directly below it.

[0012] Optionally, the first compensation block is the sensing electrode block; and the second compensation block is a copper block.

[0013] Optionally, the insulating layer is made of insulating oil.

[0014] Optionally, the positioning through hole is elliptical and located in the middle of the touch node; the major axis length of the positioning through hole is 3.5 mm to 4.2 mm, and the minor axis length is 2 mm to 2.6 mm.

[0015] Optionally, the first compensation block is annular and surrounds the outer ring of the positioning through hole; and there is a safety distance of 0.15-0.3 mm between the first compensation block and the positioning through hole.

[0016] Optionally, the touch node is rectangular; the length of the touch node is 4.2 mm to 4.3 mm, and the width is 4.2 mm to 4.3 mm.

[0017] A touch device comprises any one of the above touch panels with a compensation structure.

[0018] Optionally, the touch device includes a laptop computer and a leather keyboard.

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

[0020] In order to match and connect with the mechanical components, the touch panel is provided with a positioning through-hole with a larger aperture, which makes the touch effect at the positioning through-hole position on the touch panel poor. Therefore, the utility model first sets a first compensation block on the outer circle of the positioning through-hole to perform preliminary capacitance compensation; and then sets a second compensation block above the through-hole, so that the second compensation block can couple with the first compensation block to generate coupling capacitance to increase the touch signal amount at the through-hole position, thereby solving the touch jump point problem caused by the weak signal amount at the through-hole position, and further ensuring the data consistency and uniformity of the entire board. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0022] Figure 1 It is a structural diagram of a touch panel in the prior art;

[0023] Figure 2 It is a schematic diagram of the structure of 9 nodes of the touch panel of the prior art;

[0024] Figure 3a This is a first structural diagram of nine touch nodes of a touch panel according to a first embodiment of the present invention;

[0025] Figure 3b This is a second structural diagram of the nine touch nodes of the touch panel of the first embodiment of the present utility model;

[0026] Figure 4 This is an exploded view of nine touch nodes of a touch panel according to a first embodiment of the present invention;

[0027] Figure 5 This is a dimensional diagram of the nine touch nodes of the touch panel in the first embodiment of the present utility model;

[0028] In the figure: 1, touch node; 11, driving electrode block; 12, sensing electrode block; 2, positioning through hole; 3, first compensation block; 4, second compensation block; 5, insulating layer; 51, opening; 52, driving window. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present invention clearer, the various exemplary embodiments to be described below will refer to the corresponding drawings, which constitute a part of the exemplary embodiments, in which various exemplary embodiments that may be used to implement the present invention 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 present disclosure as detailed in the appended claims, and other embodiments may also be used, or structural and functional modifications may be made to the embodiments listed herein without departing from the scope and essence of the present invention.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", etc. indicate the orientation or position relationship based on the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the elements referred to must have a specific orientation, be constructed and operate in a specific orientation. The terms "first", "second", etc. are only used for descriptive purposes and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. The term "plurality" 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 invention can be understood according to the specific circumstances.

[0031] 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.

[0032] Example 1:

[0033] like Figure 3a and Figure 3bAs shown, the present invention provides a touchpad with a compensation structure, comprising a touch layer provided with a plurality of touch nodes 1; a plurality of positioning through-holes 2 provided on the touch layer, the positioning through-holes 2 penetrating the touch nodes 1; a first compensation block 3 provided around the outer ring of the positioning through-holes 2; a second compensation block 44 provided above the positioning through-holes 2, the second compensation block 4 being configured to couple with the first compensation block 3 to generate coupling capacitance; the touch nodes 1 comprising a driving electrode block 11 and a sensing electrode block 12, wherein on a touch node 1, two halves of the driving electrode block 11 are engaged with each other on either side of a sensing electrode block 12, and the two halves of the driving electrode blocks 11 are connected by conductive vias; M×N touch nodes 1 are arranged horizontally or vertically to form a mutual capacitance sensing array of M rows and N columns, i.e., the touch operation area of ​​the touchpad; the touch nodes 1 are arranged horizontally to form a driving channel and vertically to form a sensing channel; the sensing electrode blocks 12 on the sensing channel are connected by ribs, and the driving electrode blocks 11 between each two adjacent touch nodes 1 on the driving channel are connected by ribs. In order to match and connect with the mechanical components, the touch panel is provided with a positioning through hole 2 with a larger aperture, which makes the touch effect at the position of the positioning through hole 2 on the touch panel poor. Therefore, in this embodiment, a first compensation block 3 is first provided on the outer circle of the positioning through hole 2 to perform preliminary capacitance compensation thereon; and a second compensation block 4 is provided above the through hole so that the second compensation block 4 can couple with the first compensation block 3 to generate coupling capacitance, so as to increase the touch signal amount at the through hole position, thereby solving the touch jump point problem caused by the weak signal amount at the through hole position, and further ensuring the data consistency and uniformity of the entire board.

[0034] As an alternative embodiment, Figure 4 As shown, an insulating layer 5 is stacked on top of the touch layer; the insulating layer 5 is used to prevent short circuits between the driving channels or sensing channels on the touch layer. The insulating layer 5 is made of insulating oil, which is inexpensive and can not only play an insulating role, but also form a protective film on the surface of the touch layer to inhibit corrosion and oxidation of the electrode blocks on the touch layer. An opening 51 corresponding to the position of the positioning through hole 2 is provided on the insulating layer 5. The size of the opening 51 can be equal to the size of the positioning through hole 2, or slightly smaller than the size of the positioning through hole 2; driving windows 52 are also provided on both sides of the opening 51; the second compensation block 4 covers the opening 51 and the driving window; the second compensation block 4 is connected to the driving electrode block 11 located below through the driving windows 52 on both sides of the opening 51. As shown Figure 4As shown, the two ends of the second compensation block 4 can contact the drive electrode block 11 below the drive window 52 through the drive windows 52 on both sides, so that the drive channel where the positioning through hole 2 is located can be conductive. After the opening 51 is made on the insulating layer 5 at the corresponding position of the positioning through hole 2 and covered with the second compensation block 4, the missing drive electrode block 11 at the position of the positioning through hole 2 can be compensated, so that the first compensation block 3 can be coupled with the second compensation block 4 in the area directly above the positioning through hole 2 to generate coupling capacitance, thereby increasing the amount of touch signal. A portion of the annular insulating layer 5 is retained between the opening 51 and the two drive windows 52, which can separate the second compensation block 4 above the annular insulating layer 5 from the first compensation block 3 below to avoid short circuit caused by contact between the first compensation block 3 and the second compensation block 4; in terms of space, the second compensation block 4 above the annular insulating layer 5 overlaps with the first compensation block 3 below. This overlap will also form a coupling capacitance, further increasing the amount of touch signal at the positioning through hole 2.

[0035] As an optional embodiment, the shape of the driving window 52 is the same as the shape and size of the driving electrode block 11 directly below. Setting the shape and size of the driving window 52 to be the same as the driving electrode block 11 below can ensure that both ends of the second compensation block 4 can completely contact the driving electrode blocks 11 on both sides, improving conductivity and facilitating installation.

[0036] As an optional embodiment, the first compensation block 3 is a sensing electrode block 12, and the second compensation block 4 is a copper block. The first compensation block is a ring-shaped sensing electrode block 12, surrounding the outer ring of the positioning hole 2. The second compensation block 4 is a copper block, replacing the driving electrode block 11 at the positioning hole 2, coupling with the first compensation block 3 to form a coupling capacitor. The positioning hole 2 is elliptical and located in the center of a touch node 1. The major axis of the positioning hole 2 is 3.5mm-4.2mm, and the minor axis is 2mm-2.6mm. The first compensation block 3 is annular and surrounds the outer ring of the positioning hole 2. A safety distance of 0.15-0.3mm is maintained between the first compensation block 3 and the positioning hole 2. The touch node 1 is rectangular, with a length of 4.2mm-4.3mm and a width of 4.2mm-4.3mm.

[0037] by Figure 5Taking the pattern of nine touch nodes 1 in the figure as an example, the major axis length of the positioning through-hole 2 is 4.00 mm and the minor axis length is 2.53 mm, while the length of the touch node 1 is 4.21 mm and the width is 4.20 mm. The positioning through-hole 2 is set on the middle touch node 1, which will destroy the original touch pattern of the touch node 1. Although the first compensation block 3 (the sensing electrode block 12 in this embodiment) is set on the outer circle of the positioning through-hole 2 for compensation, the positioning through-hole 2 is relatively large, and the middle part lacks the driving electrode block 11 and the sensing electrode block 12 to generate coupling capacitance. As a result, the touch amount at the touch node 1 is small, causing the touch point jump problem.

[0038] Therefore, in addition to setting up the first compensation block 3, this embodiment also opens a window on the insulating layer 5 at the corresponding position above the positioning through hole 2, and then covers the second compensation block on the window position to fill the empty part in the middle of the point positioning through hole 2, increase the touch signal amount, and effectively avoid the touch point jump problem. As shown in Table 1 and Table 2, Table 1 is Figure 2 The test data for nine touch nodes 1 of a touchpad with two positioning holes in the prior art is shown. It is clearly shown that the data corresponding to (drive channel 2, sensing channel 2) (i.e., the data for the touch node 1 provided with the positioning hole 2) is more than 500 smaller than the surrounding data, resulting in a significant difference and poor data consistency. Table 2 shows the test data for nine touch nodes 1 of a touchpad with a compensation structure in this embodiment. The data corresponding to (drive channel 2, sensing channel 2) is only about 100 smaller than the surrounding data, showing a relatively small difference. This indicates that the touch signal is compensated at the location of the positioning hole 2, resulting in good data consistency.

[0039]

[0040] Table 1

[0041]

[0042] Table 2

[0043] The embodiment is only a special example and does not indicate that the present invention is implemented in such a way.

[0044] Example 2:

[0045] The difference between the second embodiment and the first embodiment is that a touch device includes a touchpad with a compensation structure as described in any one of the first embodiments. The touch device includes a laptop computer and a leather keyboard. The touch device uses the touchpad of the first embodiment. Even at the locations where the touchpad has positioning through holes, it can still generate normal touch signals, and the noise generated is low, thus avoiding the problem of touch point jumps. This ensures good data consistency and uniformity across the entire board, greatly improving the user experience.

[0046] The above description is merely a 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. Furthermore, under the guidance of the present invention, these features and embodiments may be modified to suit 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 are intended to be protected by the present invention.

Claims

1. A touch panel with a compensation structure, characterized in that: The invention comprises a touch layer provided with a plurality of touch nodes (1); a plurality of positioning through holes (2) are provided on the touch layer, and the positioning through holes (2) pass through the touch nodes (1); a first compensation block (3) is provided on the outer ring of the positioning through holes (2); a second compensation block (4) is provided above the positioning through holes (2), and the second compensation block (4) is used to couple with the first compensation block (3) to generate coupling capacitance; the touch nodes (1) comprise a driving electrode block (11) and a sensing electrode block (12).

2. The touch panel with a compensation structure according to claim 1, wherein: An insulating layer (5) is stacked above the touch layer; an opening (51) corresponding to the upper and lower positions of the positioning through hole (2) is provided on the insulating layer (5), and drive windows (52) are provided on both sides of the opening (51); the second compensation block (4) covers the opening (51) and the drive window; The second compensation block (4) is electrically connected to the driving electrode block (11) located below through the driving windows (52) on both sides of the opening (51).

3. The touch panel with a compensation structure according to claim 2, wherein: The shape of the driving window (52) is the same as the shape and size of the driving electrode block (11) directly below it.

4. The touch panel with a compensation structure according to claim 2, wherein: The first compensation block (3) is the induction electrode block (12); the second compensation block (4) is a copper sheet block.

5. The touch panel with a compensation structure according to claim 2, wherein: The material of the insulating layer (5) is insulating oil.

6. The touch panel with a compensation structure according to claim 1, wherein: The positioning through hole (2) is elliptical and is located in the middle of the touch node (1); the major axis length of the positioning through hole (2) is 3.5 mm to 4.2 mm, and the minor axis length is 2 mm to 2.6 mm.

7. The touch panel with a compensation structure according to claim 6, characterized in that: The first compensation block (3) is annular and surrounds the outer ring of the positioning through hole (2); a safety distance of 0.15 to 0.3 mm exists between the first compensation block (3) and the positioning through hole (2).

8. The touch panel with a compensation structure according to claim 6, wherein: The touch node (1) is rectangular; the length of the touch node (1) is 4.2 mm to 4.3 mm, and the width is 4.2 mm to 4.3 mm.

9. A touch device, characterized in that: A touch panel with a compensation structure comprising any one of claims 1-8.

10. The touch device according to claim 9, wherein: The touch device includes a notebook computer and a leather keyboard.

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