Touch electrode structure and capacitive touch system

Abstract

A touch electrode structure and a capacitive touch system, the touch electrode structure comprising: a substrate; a plurality of first electrode series, each of the plurality of first electrode series comprising a plurality of first electrodes; a plurality of second electrode series, each of the plurality of second electrode series comprising a plurality of second electrodes; and at least one connecting line formed on a second surface of the substrate, wherein each of the plurality of second electrode series comprises at least one electrode group, the at least one electrode group comprises two second electrodes, the two second electrodes are electrically connected on a first surface of the substrate, and at least one of the two second electrodes is electrically connected to a second electrode adjacent to the at least one of the two second electrodes through the at least one connecting line.

Description

Technical Field

[0001] The present disclosure relates to the field of touch technology, and more particularly to a touch electrode structure and a capacitive touch system. Background Art

[0002] In a capacitive touch system, a plurality of touch electrodes are used to sense a touch signal or a hovering signal on a touch panel. The plurality of touch electrodes include a plurality of drive electrodes and a plurality of sensing electrodes. The plurality of drive electrodes and the plurality of sensing electrodes are formed on a substrate. When the substrate includes four layers of circuits, the substrate is a four-layer board. When the substrate includes two layers of circuits, the substrate is a two-layer board.

[0003] Due to the large number of touch electrodes, vias and connecting lines are required to connect adjacent touch electrodes. When the substrate is a two-layer board, the vias and connecting lines can only be formed on one surface of the substrate, occupying too much space on the substrate, resulting in a reduction in the substrate's usable space.

[0004] Therefore, it is necessary to propose a solution to the above-mentioned problems in the prior art. Summary of the invention

[0005] The present disclosure provides a touch electrode structure and a capacitive touch system, which can solve the problems in the prior art.

[0006] The touch electrode structure disclosed herein includes: a substrate; a plurality of first electrode series formed on a first surface of the substrate along a first direction, each of the plurality of first electrode series including a plurality of first electrodes; a plurality of second electrode series formed on the first surface of the substrate along a second direction, each of the plurality of second electrode series including a plurality of second electrodes; and at least one connecting line formed on a second surface of the substrate, wherein each of the plurality of second electrode series includes at least one electrode group, the at least one electrode group includes two second electrodes, the two second electrodes are electrically connected on the first surface of the substrate, and at least one of the two second electrodes is electrically connected to a second electrode adjacent to the at least one of the two second electrodes through the at least one connecting line.

[0007] The capacitive touch system disclosed herein includes: a touch panel and a touch detection unit. The touch electrode structure includes: a substrate; a plurality of first electrode series formed on a first surface of the substrate along a first direction, each of the plurality of first electrode series includes a plurality of first electrodes; a plurality of second electrode series formed on the first surface of the substrate along a second direction, each of the plurality of second electrode series includes a plurality of second electrodes; and at least one connecting line formed on a second surface of the substrate, wherein each of the plurality of second electrode series includes at least one electrode group, the at least one electrode group includes two second electrodes, the two second electrodes are electrically connected on the first surface of the substrate, and at least one of the two second electrodes is electrically connected to a second electrode adjacent to the at least one of the two second electrodes through the at least one connecting line. The touch detection unit is electrically connected to the touch electrode structure and is used to detect a touch signal or a hovering signal on the touch electrode structure.

[0008] In the touch electrode structure and capacitive touch system disclosed in the present invention, since at least one electrode group in each of the plurality of second electrode series includes two electrically connected second electrodes, no connection wire is required between the two second electrodes in the at least one group, which can save the number of connection wires and the number of guide holes, thereby increasing the usable space of the second surface of the substrate. In addition, the present invention provides a variety of second electrode patterns, which can achieve the advantages of simple circuit layout or increased touch accuracy and linearity. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0010] Figure 1 A schematic diagram showing a touch electrode structure according to an embodiment of the present disclosure.

[0011] Figure 2 Display according to Figure 1 A magnified image of the electrode group.

[0012] Figure 3 A schematic diagram showing a touch electrode structure according to another embodiment of the present disclosure.

[0013] Figure 4 Display according to Figure 3 A magnified image of the electrode group.

[0014] Figure 5 A schematic diagram showing a touch electrode structure according to another embodiment of the present disclosure.

[0015] Figure 6 Display according to Figure 5 A magnified image of the electrode group.

[0016] Figure 7 A schematic diagram showing a capacitive touch system according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and effect of the present disclosure clearer and more specific, the present disclosure is further described in detail with reference to the drawings and embodiments below. It should be understood that the specific embodiments described herein are only used to explain the present disclosure, and the term "embodiment" used in the present disclosure specification is intended to be used as an example, example or illustration, and is not intended to limit the present disclosure. In addition, the article "one" used in the present disclosure specification and the attached patent application scope can generally be interpreted as meaning "one or more", unless otherwise specified or the singular form can be clearly determined from the context. In addition, in the accompanying drawings, components with similar or identical structures and functions are represented by the same component numbers.

[0018] See also Figure 1 , Figure 1 A schematic diagram showing a touch electrode structure according to an embodiment of the present disclosure.

[0019] The touch electrode structure includes a substrate 10, a plurality of first electrode series Y1-Y8, a plurality of second electrode series X1-X5 and at least one connecting line 20 ( Figure 1 A plurality of connection lines 20 are shown).

[0020] The substrate 10 is a two-layer board. More specifically, the circuits and related components are only formed on two surfaces of the substrate 10. The plurality of first electrode series Y1-Y8 are formed on a first surface (e.g., the lower surface) of the substrate 10 along a first direction. Each of the plurality of first electrode series Y1-Y8 includes a plurality of first electrodes 30. It should be noted that since all the first electrodes 30 are of the same shape and no insulating material is formed between adjacent first electrodes 30, each of the plurality of first electrode series Y1-Y8 is located at Figure 1 Displayed as a long strip.

[0021] The plurality of second electrode series X1-X5 are formed on the first surface of the substrate 10 along a second direction, and each of the plurality of second electrode series X1-X5 includes a plurality of second electrodes 40. The first direction is different from the second direction. In this embodiment, the first direction is perpendicular to the second direction. The plurality of connecting lines 20 are formed on a second surface (e.g., an upper surface) of the substrate 10.

[0022] The plurality of first electrode series Y1-Y8 are electrically insulated from the plurality of second electrode series X1-X5. Adjacent first electrode series Y1-Y8 are electrically insulated from each other. All first electrodes 30 in the same first electrode series are electrically connected on the first surface of the substrate 10. That is, all first electrodes 30 in the first electrode series Y1 are electrically connected on the first surface of the substrate 10. All first electrodes 30 in the first electrode series Y2 are electrically connected on the first surface of the substrate 10. All first electrodes 30 in each of the plurality of first electrode series Y3-Y8 are electrically connected on the first surface of the substrate 10.

[0023] Adjacent second electrode series X1-X5 are electrically insulated from each other. Each of the plurality of second electrode series X1-X5 includes at least one electrode group, the at least one electrode group includes two adjacent (continuous) second electrodes 40, the two second electrodes 40 are electrically connected on the first surface of the substrate 10, and at least one of the two second electrodes 40 is electrically connected to the second electrode 40 adjacent to the at least one of the two second electrodes 40 through the connecting line 20.

[0024] For example, the second electrode series X1 includes 8 second electrodes 40 and four electrode groups 400-406, the electrode group 400 includes two adjacent (continuous) second electrodes 40, the two second electrodes 40 are electrically connected on the first surface of the substrate 10, and the second electrode 40 located on the right side is electrically connected to the second electrode 40 adjacent to the second electrode 40 on the right side through the connecting line 20.

[0025] The electrode group 402 includes two adjacent (continuous) second electrodes 40 . The two second electrodes 40 are electrically connected on the first surface of the substrate 10 , and the two second electrodes 40 are electrically connected to the second electrodes 40 adjacent to the two second electrodes 40 through the connecting wires 20 .

[0026] The electrode group 404 includes two adjacent (continuous) second electrodes 40 . The two second electrodes 40 are electrically connected on the first surface of the substrate 10 , and the two second electrodes 40 are electrically connected to the second electrodes 40 adjacent to the two second electrodes 40 through the connecting wires 20 .

[0027] The electrode group 406 includes two adjacent (continuous) second electrodes 40, which are electrically connected on the first surface of the substrate 10, and the second electrode 40 on the left is electrically connected to the second electrode 40 adjacent to the second electrode 40 on the left through the connecting line 20.

[0028] In short, the electrode group 400 (formed on the first surface of the substrate 10) and the electrode group 402 (formed on the first surface of the substrate 10) are electrically disconnected, so it is necessary to use the connection line 20 (formed on the second surface of the substrate 10) to electrically connect the electrode group 400 (formed on the first surface of the substrate 10) and the electrode group 402 (formed on the first surface of the substrate 10). The electrode group 402 (formed on the first surface of the substrate 10) and the electrode group 404 (formed on the first surface of the substrate 10) are electrically disconnected, so it is necessary to use the connection line 20 (formed on the second surface of the substrate 10) to electrically connect the electrode group 402 (formed on the first surface of the substrate 10) and the electrode group 404 (formed on the first surface of the substrate 10). The electrode group 404 (formed on the first surface of the substrate 10) and the electrode group 406 (formed on the first surface of the substrate 10) are electrically disconnected, so it is necessary to use the connecting wire 20 (formed on the second surface of the substrate 10) to electrically connect the electrode group 404 (formed on the first surface of the substrate 10) and the electrode group 406 (formed on the first surface of the substrate 10).

[0029] In the prior art, adjacent second electrodes in the same second electrode series are electrically disconnected from each other, so connecting wires are required to electrically connect the adjacent second electrodes. In the touch electrode structure disclosed herein, each of the plurality of second electrode series X1-X5 includes at least one electrode group, and the at least one electrode group includes two electrically connected second electrodes 40, so no connecting wire 20 is required between the two second electrodes 40 of the at least one group, thereby saving the number of connecting wires 20.

[0030] In this embodiment, each of the plurality of second electrode series X1-X5 includes four electrode groups 402-406, so each of the plurality of second electrode series X1-X5 can reduce four connection lines 20, thereby reducing the space occupied by the plurality of connection lines 20 on the second surface of the substrate 10. Furthermore, the number of electrode groups included in each of the plurality of second electrode series X1-X5 is not limited, as long as at least one group is included, the purpose of reducing the number of connection lines 20 can be achieved.

[0031] Each of the plurality of connecting wires 20 electrically connects adjacent second electrodes 40 via a guide hole (not shown). The guide hole penetrates the first surface and the second surface of the substrate 10. As the number of connecting wires 20 is reduced, the number of guide holes can also be reduced, thereby reducing the space occupied by the guide holes on the second surface of the substrate 10.

[0032] See also Figure 2 , Figure 2 Display according to Figure 1 An enlarged view of the electrode group 400.

[0033] The electrode group 400 includes two second electrodes 40. The two second electrodes 40 are rectangular and electrically connected through a connecting portion 42 between the second electrodes 40. Since the two second electrodes 40 are rectangular, Figure 1 The advantage of the touch electrode structure is that the circuit layout is simple.

[0034] In this embodiment, the plurality of first electrodes 30 are driving electrodes, and the plurality of second electrodes 40 are sensing electrodes. In another embodiment, the plurality of first electrodes 30 are sensing electrodes, and the plurality of second electrodes 40 are driving electrodes. The manner in which the driving electrodes and the sensing electrodes sense touch is well known to those skilled in the art, and will not be described in detail herein.

[0035] See also Figure 3 , Figure 3 A schematic diagram showing a touch electrode structure according to another embodiment of the present disclosure.

[0036] The touch electrode structure includes a substrate 10', a plurality of first electrode series Y1'-Y8', a plurality of second electrode series X1'-X5' and at least one connecting line 20' ( Figure 3 A plurality of connection lines 20' are shown).

[0037] The substrate 10' is a two-layer board. Specifically, the circuits and related components are only formed on two surfaces of the substrate 10'. The plurality of first electrode series Y1'-Y8' include a plurality of first electrodes 30'.

[0038] The plurality of second electrode series X1'-X5' include a plurality of second electrodes 40'. The plurality of connection lines 20' are formed on a second surface of the substrate 10'.

[0039] For parts not described in this embodiment, please refer to Figure 1 The relevant description is not elaborated here.

[0040] This embodiment and Figure 1 The difference between the embodiment of the present invention and the second electrode 40' is that Figure 1 The second electrode 40 has different shapes.

[0041] See also Figure 4 , Figure 4 Display according to Figure 3 A magnified image of the electrode group.

[0042] The electrode set includes two second electrodes 40', each of which includes a first triangular portion 42', a second triangular portion 44' and a connecting portion 46'. The shape of the first triangular portion 42' is opposite to that of the second triangular portion 44', and the connecting portion 46' is a straight line. The first triangular portion 42' and the second triangular portion 44' are electrically connected through the connecting portion 46'. Figure 4 The advantage of the touch electrode structure is that it can increase touch accuracy and linearity.

[0043] See also Figure 5 , Figure 5 A schematic diagram showing a touch electrode structure according to another embodiment of the present disclosure.

[0044] The touch electrode structure includes a substrate 10", a plurality of first electrode series Y1"-Y8", a plurality of second electrode series X1"-X5" and at least one connecting line 20" Figure 5 A plurality of connection lines 20" are shown).

[0045] The substrate 10" is a two-layer board. More specifically, the circuits and related components are only formed on two surfaces of the substrate 10". The plurality of first electrode series Y1"-Y8" include a plurality of first electrodes 30".

[0046] The plurality of second electrode series X1"-X5" include a plurality of second electrodes 40". The plurality of connection lines 20" are formed on a second surface of the substrate 10".

[0047] For parts not described in this embodiment, please refer to Figure 1 The relevant description is not elaborated here.

[0048] This embodiment and Figure 1 The difference between the embodiment of the present invention and the second electrode 40" is that Figure 1 The second electrode 40 has different shapes.

[0049] See also Figure 6 , Figure 6 Display according to Figure 5 A magnified image of the electrode group.

[0050] The electrode group includes two second electrodes 40", and the two second electrodes 40" respectively include a first triangular portion 42", a second triangular portion 44" and a connecting portion 46". The shape of the first triangular portion 42" is opposite to that of the second triangular portion 44", and the connecting portion 46" is a rhombus. The first triangular portion 42" and the second triangular portion 44" are electrically connected through the connecting portion 46". Figure 6 The advantage of the touch electrode structure is that it can increase touch accuracy and linearity.

[0051] See also Figure 7 , Figure 7 A schematic diagram showing a capacitive touch system according to an embodiment of the present disclosure is shown.

[0052] The capacitive touch system includes a touch panel 70 and a touch detection unit 72 .

[0053] The touch panel 70 includes a touch electrode structure. Figure 5 The relevant description of is not repeated here. It should be noted that the touch electrode structure can also be used Figure 1 or Figure 3 Embodiment of.

[0054] The touch detection unit 72 is electrically connected to the touch electrode structure and is used to detect a touch signal or a hovering signal on the touch electrode structure.

[0055] In the touch electrode structure and capacitive touch system disclosed in the present invention, since at least one electrode group in each of the plurality of second electrode series includes two electrically connected second electrodes, no connection wire is required between the two second electrodes in the at least one group, which can save the number of connection wires and the number of guide holes, thereby increasing the usable space of the second surface of the substrate. In addition, the present invention provides a variety of second electrode patterns, which can achieve the advantages of simple circuit layout or increased touch accuracy and linearity.

[0056] In summary, although the present disclosure has been disclosed as above in terms of preferred embodiments, the above preferred embodiments are not intended to limit the present disclosure. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present disclosure. Therefore, the scope of protection of the present disclosure shall be based on the scope defined in the claims.

Claims

1. A touch electrode structure, characterized in that: include: a substrate, wherein the substrate is a two-layer board; A plurality of first electrode series are formed on a first surface of the substrate along a first direction, each of the plurality of first electrode series comprises a plurality of first electrodes; A plurality of second electrode series are formed on the first surface of the substrate along a second direction, each of the plurality of second electrode series comprises a plurality of second electrodes; and At least one connecting line is formed on a second surface of the substrate, Each of the plurality of second electrode series comprises a plurality of electrode groups, each of the plurality of electrode groups comprises two second electrodes, the two second electrodes are electrically connected on the first surface of the substrate, and adjacent electrode groups are electrically connected via the at least one connecting line; The second electrode of each of the plurality of electrode groups comprises: a first triangular part; a second triangular part; as well as A connecting portion, wherein the shape of the first triangular portion is opposite to that of the second triangular portion, the connecting portion is a rhombus, and the first triangular portion and the second triangular portion are electrically connected through the connecting portion.

2. A capacitive touch system, characterized in that: include: A touch panel includes a touch electrode structure, wherein the touch electrode structure includes: a substrate, wherein the substrate is a two-layer board; A plurality of first electrode series are formed on a first surface of the substrate along a first direction, each of the plurality of first electrode series comprises a plurality of first electrodes; A plurality of second electrode series are formed on the first surface of the substrate along a second direction, each of the plurality of second electrode series comprises a plurality of second electrodes; and At least one connecting line is formed on a second surface of the substrate, Each of the plurality of second electrode series comprises at least one electrode group, the at least one electrode group comprises two second electrodes, the two second electrodes are electrically connected on the first surface of the substrate, and adjacent electrode groups are electrically connected via the at least one connecting line; and a touch detection unit electrically connected to the touch electrode structure and used to detect a touch signal or a suspension signal on the touch electrode structure; The second electrode of each of the plurality of electrode groups comprises: a first triangular part; a second triangular portion; and A connecting portion, wherein the shape of the first triangular portion is opposite to that of the second triangular portion, the connecting portion is a rhombus, and the first triangular portion and the second triangular portion are electrically connected through the connecting portion.

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