CN112925452A - Touch electrode structure and capacitive touch system - Google Patents
Touch electrode structure and capacitive touch system Download PDFInfo
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- CN112925452A CN112925452A CN201911241679.2A CN201911241679A CN112925452A CN 112925452 A CN112925452 A CN 112925452A CN 201911241679 A CN201911241679 A CN 201911241679A CN 112925452 A CN112925452 A CN 112925452A
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- 239000000758 substrate Substances 0.000 claims abstract description 75
- 238000001514 detection method Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 8
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04112—Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
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Abstract
A touch electrode structure and a capacitive touch system are provided, the touch electrode structure comprising: a substrate; a plurality of first electrode serials, each of the plurality of first electrode serials including a plurality of first electrodes; a plurality of second electrode serials, each of the plurality of second electrode serials 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 serials includes at least one electrode group, the at least one electrode group includes 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
The present disclosure relates to the field of touch technologies, and more particularly, to a touch electrode structure and a capacitive touch system.
Background
In a capacitive touch system, a plurality of touch electrodes are used to sense a touch signal or a floating signal on a touch panel. The touch electrodes include driving electrodes and sensing electrodes. The driving electrodes and the sensing electrodes are formed on a substrate. When the substrate comprises four layers of circuits, the substrate is a four-layer plate. When the substrate comprises two layers of circuits, the substrate is a two-layer plate.
Since the number of the touch electrodes is large, it is necessary to connect the adjacent touch electrodes by using the via holes (via) and the connecting lines, and when the substrate is a two-layer board, the via holes and the connecting lines can be formed only on one surface of the substrate, occupying too much space of the substrate, resulting in a reduction in the use space of the substrate.
There is therefore a need to provide a solution to the above-mentioned problems of the prior art.
Disclosure of Invention
The present disclosure provides a touch electrode structure and a capacitive touch system, which can solve the problems in the prior art.
The touch electrode structure of the present disclosure includes: a substrate; a plurality of first electrode serials formed on a first surface of the substrate along a first direction, each of the plurality of first electrode serials including a plurality of first electrodes; a plurality of second electrode serials formed on the first surface of the substrate along a second direction, each of the plurality of second electrode serials 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.
The capacitive touch system of the present disclosure includes: a touch panel and a touch detection unit. The touch electrode structure includes: a substrate; a plurality of first electrode serials formed on a first surface of the substrate along a first direction, each of the plurality of first electrode serials including a plurality of first electrodes; a plurality of second electrode serials formed on the first surface of the substrate along a second direction, each of the plurality of second electrode serials 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. The touch detection unit is electrically connected to the touch electrode structure and is used for detecting a touch signal or a floating signal on the touch electrode structure.
In the touch electrode structure and the capacitive touch system of the present disclosure, since at least one electrode group in each of the plurality of second electrode series includes two electrically connected second electrodes, no connecting wire is required between the at least one group of two second electrodes, the number of connecting wires and the number of vias can be reduced, and the space available on the second surface of the substrate is increased. In addition, the present disclosure provides various patterns of the second electrode, which can achieve the advantages of simple circuit layout or increased touch accuracy and linearity.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 shows a schematic diagram of a touch electrode structure according to an embodiment of the disclosure.
Fig. 2 shows an enlarged view of the electrode assembly according to fig. 1.
Fig. 3 shows a schematic diagram of a touch electrode structure according to another embodiment of the disclosure.
Fig. 4 shows an enlarged view of the electrode assembly according to fig. 3.
FIG. 5 is a schematic diagram of a touch electrode structure according to another embodiment of the disclosure.
Fig. 6 shows an enlarged view of the electrode assembly according to fig. 5.
FIG. 7 is a schematic diagram of a capacitive touch system according to an embodiment of the disclosure.
Detailed Description
In order to make the objects, technical solutions and effects of the present disclosure clearer and clearer, the present disclosure is further described in detail below with reference to the drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the disclosure and that the word "embodiment" as used in this disclosure is intended to serve as an example, instance, or illustration and is not intended to limit the disclosure. In addition, the articles "a" and "an" as used in this disclosure and the appended claims may generally be construed to mean "one or more" unless specified otherwise or clear from context to be directed to a singular form. Also, in the drawings, elements having similar or identical structures, functions, and the like are referred to by the same element numbers.
Referring to fig. 1, fig. 1 shows a schematic diagram of a touch electrode structure according to an embodiment of the disclosure.
The touch electrode structure includes a substrate 10, a plurality of first electrode serials Y1-Y8, a plurality of second electrode serials X1-X5, and at least one connection line 20 (fig. 1 shows a plurality of connection lines 20).
The substrate 10 is a two-layer board, and more specifically, the circuit and related components are formed only on two surfaces of the substrate 10. The plurality of first electrode serials Y1-Y8 are formed on a first surface (e.g., a lower surface) of the substrate 10 along a first direction, and each of the plurality of first electrode serials Y1-Y8 includes a plurality of first electrodes 30. It should be noted that, since all the first electrodes 30 are in the same shape and no insulating material is formed between the adjacent first electrodes 30, each of the plurality of first electrode serials Y1-Y8 is shown as a long strip in fig. 1.
The plurality of second electrode serials X1-X5 are formed on the first surface of the substrate 10 along a second direction, and each of the plurality of second electrode serials X1-X5 includes a plurality of second electrodes 40. The first direction is different from the second direction, and in the embodiment, the first direction is perpendicular to the second direction. The connecting lines 20 are formed on a second surface (e.g., an upper surface) of the substrate 10.
The plurality of first electrode serials Y1-Y8 and the plurality of second electrode serials X1-X5 are electrically insulated from each other. The adjacent first electrode serials Y1-Y8 are electrically insulated from each other. All the first electrodes 30 in the same first electrode series are electrically connected on the first surface of the substrate 10. That is, all the first electrodes 30 in the first electrode series Y1 are electrically connected on the first surface of the substrate 10. All the first electrodes 30 in the first electrode series Y2 are electrically connected on the first surface of the substrate 10. All the first electrodes 30 in each of the plurality of first electrode serials Y3-Y8 are electrically connected on the first surface of the substrate 10.
The adjacent second electrode serials X1-X5 are electrically insulated from each other. Each of the plurality of second electrode serials X1-X5 includes at least one electrode group including 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 a connection line 20.
For example, the second electrode series X1 includes 8 second electrodes 40 and includes four electrode groups 400 and 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 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 wire 20.
The electrode set 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 connection lines 20.
The electrode set 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 connection line 20.
The electrode set 406 includes two adjacent (continuous) second electrodes 40, the two adjacent second electrodes 40 are electrically connected on the first surface of the substrate 10, and the second electrode 40 on the left side is electrically connected to the second electrode 40 adjacent to the second electrode 40 on the left side through the connection line 20.
In short, the electrode set 400 (formed on the first surface of the substrate 10) and the electrode set 402 (formed on the first surface of the substrate 10) are electrically disconnected, so that the electrode set 400 (formed on the first surface of the substrate 10) and the electrode set 402 (formed on the first surface of the substrate 10) need to be electrically connected by the connecting wires 20 (formed on the second surface of the substrate 10). The electrode set 402 (formed on the first surface of the substrate 10) and the electrode set 404 (formed on the first surface of the substrate 10) are electrically disconnected, so that the electrode set 402 (formed on the first surface of the substrate 10) and the electrode set 404 (formed on the first surface of the substrate 10) need to be electrically connected by the connecting wires 20 (formed on the second surface of the substrate 10). The electrode set 404 (formed on the first surface of the substrate 10) and the electrode set 406 (formed on the first surface of the substrate 10) are electrically disconnected, so that the electrode set 404 (formed on the first surface of the substrate 10) and the electrode set 406 (formed on the first surface of the substrate 10) need to be electrically connected by the connecting wires 20 (formed on the second surface of the substrate 10).
In the prior art, the adjacent second electrodes in the same second electrode series are electrically disconnected from each other, so that a connecting wire is required to electrically connect the adjacent second electrodes. In the touch electrode structure of the present disclosure, each of the plurality of second electrode serials X1-X5 includes at least one electrode group, and the at least one electrode group includes two electrically connected second electrodes 40, so that the connecting wires 20 are not required between the two second electrodes 40 of the at least one group, and the number of the connecting wires 20 can be reduced.
In the embodiment, each of the plurality of second electrode series X1-X5 includes four electrode groups 402-406, so that four connecting wires 20 can be reduced for each of the plurality of second electrode series X1-X5, thereby reducing the space occupied by the plurality of connecting wires 20 on the second surface of the substrate 10. Moreover, the number of the electrode groups included in each of the plurality of second electrode serials X1-X5 is not limited, and the number of the connecting wires 20 can be reduced by including at least one group.
Each of the plurality of connection lines 20 electrically connects the adjacent second electrodes 40 through vias (not shown). The via hole penetrates the first surface and the second surface of the substrate 10. Since the number of the connecting wires 20 is reduced, the number of the vias can be reduced, thereby reducing the space occupied by the vias on the second surface of the substrate 10.
Referring to fig. 2, fig. 2 shows an enlarged view of the electrode assembly 400 according to fig. 1.
The electrode assembly 400 includes two second electrodes 40, and the two second electrodes 40 are rectangular and electrically connected through a connection portion 42 between the second electrodes 40. Since the two second electrodes 40 are rectangular, the touch electrode structure of fig. 1 has the advantage of simple circuit layout.
In the present embodiment, the first electrodes 30 are driving electrodes, and the second electrodes 40 are sensing electrodes. In another embodiment, the first electrodes 30 are sensing electrodes and the second electrodes 40 are driving electrodes. The manner of sensing touch between the driving electrodes and the sensing electrodes is well known to those skilled in the art, and will not be described herein.
Referring to fig. 3, fig. 3 is a schematic diagram illustrating a touch electrode structure according to another embodiment of the disclosure.
The touch electrode structure includes a substrate 10 ', a plurality of first electrode serials Y1 ' -Y8 ', a plurality of second electrode serials X1 ' -X5 ', and at least one connecting line 20 ' (fig. 3 shows a plurality of connecting lines 20 ').
The substrate 10 'is a two-layer board, and more specifically, the circuit and related components are formed only on two surfaces of the substrate 10'. The plurality of first electrode serials Y1 ' -Y8 ' include a plurality of first electrodes 30 '.
The plurality of second electrode serials 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'.
The non-described portions of the present embodiment can refer to the related description of fig. 1, and are not described herein.
The difference between this embodiment and the embodiment of fig. 1 is that the second electrode 40' of this embodiment has a different shape from the second electrode 40 of fig. 1.
Referring to fig. 4, fig. 4 shows an enlarged view of the electrode assembly according to fig. 3.
The electrode set 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 first triangular portion 42 'has a shape opposite to the second triangular portion 44', the connecting portion 46 'is a straight line, and the first triangular portion 42' and the second triangular portion 44 'are electrically connected through the connecting portion 46'. The touch electrode structure of FIG. 4 has the advantage of increasing touch accuracy and linearity.
Referring to fig. 5, fig. 5 is a schematic diagram illustrating a touch electrode structure according to another embodiment of the disclosure.
The touch electrode structure includes a substrate 10 ", a plurality of first electrode serials Y1" -Y8 ", a plurality of second electrode serials X1" -X5 ", and at least one connection line 20" (fig. 5 shows a plurality of connection lines 20 ").
The substrate 10 "is a two-layer board, and more specifically, the circuitry and associated components are formed on only two surfaces of the substrate 10". The plurality of first electrode serials Y1 "-Y8" includes a plurality of first electrodes 30 ".
The plurality of second electrode serials X1 "-X5" comprise a plurality of second electrodes 40 ". The plurality of connection lines 20 "are formed on a second surface of the substrate 10".
The non-described portions of the present embodiment can refer to the related description of fig. 1, and are not described herein.
The difference between this embodiment and the embodiment of fig. 1 is that the second electrode 40 ″ of this embodiment has a different shape from the second electrode 40 of fig. 1.
Referring to fig. 6, fig. 6 shows an enlarged view of the electrode assembly according to fig. 5.
The electrode set 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 first triangular portion 42 "has a shape opposite to the second triangular portion 44", the connecting portion 46 "has a diamond shape, and the first triangular portion 42" and the second triangular portion 44 "are electrically connected through the connecting portion 46". The touch electrode structure of FIG. 6 has the advantage of increasing touch accuracy and linearity.
Referring to fig. 7, fig. 7 is a schematic diagram illustrating a capacitive touch system according to an embodiment of the disclosure.
The capacitive touch system includes a touch panel 70 and a touch detection unit 72.
The touch panel 70 includes a touch electrode structure, and the touch electrode structure can refer to the related description in fig. 5, which is not repeated herein. It should be noted that the touch electrode structure can also adopt the embodiment of fig. 1 or fig. 3.
The touch detection unit 72 is electrically connected to the touch electrode structure and is used for detecting a touch signal or a floating signal on the touch electrode structure.
In the touch electrode structure and the capacitive touch system of the present disclosure, since at least one electrode group in each of the plurality of second electrode series includes two electrically connected second electrodes, no connecting wire is required between the at least one group of two second electrodes, the number of connecting wires and the number of vias can be reduced, and the space available on the second surface of the substrate is increased. In addition, the present disclosure provides various patterns of the second electrode, which can achieve the advantages of simple circuit layout or increased touch accuracy and linearity.
In summary, although the present disclosure has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present disclosure, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, so that the scope of the present disclosure is defined by the appended claims.
Claims (10)
1. A touch electrode structure, comprising:
a substrate;
a plurality of first electrode serials formed on a first surface of the substrate along a first direction, each of the plurality of first electrode serials including a plurality of first electrodes;
a plurality of second electrode serials formed on the first surface of the substrate along a second direction, each of the plurality of second electrode serials 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 serials 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.
2. The touch electrode structure of claim 1, wherein each of the plurality of second electrode series includes a plurality of electrode groups, and adjacent electrode groups are electrically connected to each other through the at least one connection line.
3. The touch electrode structure of claim 2, wherein the second electrodes of each of the plurality of electrode sets are rectangular and electrically connected through a connection portion between the second electrodes.
4. The touch electrode structure of claim 2, wherein the second electrode of each of the plurality of electrode sets comprises:
a first triangular portion;
a second triangular portion; and
and the first triangular part and the second triangular part are electrically connected through the connecting part, wherein the shape of the first triangular part is opposite to that of the second triangular part, the connecting part is a straight line, and the first triangular part and the second triangular part are electrically connected through the connecting part.
5. The touch electrode structure of claim 2, wherein the second electrode of each of the plurality of electrode sets comprises:
a first triangular portion;
a second triangular portion; and
and the first triangular part and the second triangular part are electrically connected through the connecting part.
6. A capacitive touch system, comprising:
a touch panel comprising a touch electrode structure, the touch electrode structure comprising:
a substrate;
a plurality of first electrode serials formed on a first surface of the substrate along a first direction, each of the plurality of first electrode serials including a plurality of first electrodes;
a plurality of second electrode serials formed on the first surface of the substrate along a second direction, each of the plurality of second electrode serials including a plurality of second electrodes; and
at least one connecting line is formed on a second surface of the substrate,
wherein each of the plurality of second electrode serials 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 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 wire; and
a touch detection unit electrically connected to the touch electrode structure and used for detecting a touch signal or a floating signal on the touch electrode structure.
7. The capacitive touch system of claim 6, wherein each of the second electrode series comprises a plurality of electrode groups, and adjacent electrode groups are electrically connected to each other through the at least one connecting wire.
8. The capacitive touch system of claim 7, wherein the second electrodes of each of the plurality of electrode sets are rectangular and electrically connected through a connection between the second electrodes.
9. The capacitive touch system of claim 7, wherein the second electrode of each of the plurality of electrode sets comprises:
a first triangular portion;
a second triangular portion; and
and the first triangular part and the second triangular part are electrically connected through the connecting part, wherein the shape of the first triangular part is opposite to that of the second triangular part, the connecting part is a straight line, and the first triangular part and the second triangular part are electrically connected through the connecting part.
10. The capacitive touch system of claim 7, wherein the second electrode of each of the plurality of electrode sets comprises:
a first triangular portion;
a second triangular portion; and
and the first triangular part and the second triangular part are electrically connected through the connecting part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911241679.2A CN112925452A (en) | 2019-12-06 | 2019-12-06 | Touch electrode structure and capacitive touch system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911241679.2A CN112925452A (en) | 2019-12-06 | 2019-12-06 | Touch electrode structure and capacitive touch system |
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| CN112925452A true CN112925452A (en) | 2021-06-08 |
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| US20170090625A1 (en) * | 2014-05-21 | 2017-03-30 | Sharp Kabushiki Kaisha | Conductive sheet, touch panel device, and display device |
| CN109656400A (en) * | 2017-10-10 | 2019-04-19 | 夏普株式会社 | Touch panel |
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- 2019-12-06 CN CN201911241679.2A patent/CN112925452A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120256873A1 (en) * | 2011-04-06 | 2012-10-11 | Sitronix Technology Corp. | Sensing structure of touch panel |
| CN103164091A (en) * | 2012-08-31 | 2013-06-19 | 敦泰科技有限公司 | Single-layer electrode mutual capacitance touch screen |
| CN203217534U (en) * | 2013-03-15 | 2013-09-25 | 北京京东方光电科技有限公司 | Capacitive type touch panel and touch type display device |
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