CN109901758B - Touch panel switch and touch panel combination switch - Google Patents
Touch panel switch and touch panel combination switch Download PDFInfo
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- CN109901758B CN109901758B CN201811202220.7A CN201811202220A CN109901758B CN 109901758 B CN109901758 B CN 109901758B CN 201811202220 A CN201811202220 A CN 201811202220A CN 109901758 B CN109901758 B CN 109901758B
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Abstract
A touch panel switch and a touch panel combination switch for detecting a touch range with a simple structure. The disclosed device is provided with: a pair of base materials (5a, 5b) arranged opposite to each other; a power supply electrode unit (6) which has a resistor (11) linearly extending from the vicinity of a reference position (P) set on one base material (5a) and is disposed on the one base material (5a) so that a potential gradient is expanded to the periphery of the reference position (P) by supplying power to the resistor (11); a detection electrode section (7) disposed on one base material (5a) so as to extend along the power supply electrode section (6); and a connection unit (10) that is disposed on the other base material (5b) so as to face the power supply electrode unit (6) and the detection electrode unit (7), connects the power supply electrode unit (6) corresponding to a touch range (S) in which the other base material (5b) is touched to the detection electrode unit (7), and detects the touch range (S) by measuring the potential of the power supply electrode unit (6) corresponding to the touch range (S).
Description
Technical Field
The present invention relates to a touch panel switch and a touch panel combination switch, and more particularly, to a touch panel switch and a touch panel combination switch for performing resistance detection of a touch range during touch.
Background
Conventionally, a touch panel switch that detects a touch on a surface by resistance to switch on/off of the device has been put to practical use. For example, two conductive films are arranged opposite to each other, and one conductive film touched by a finger is bent and brought into contact with the other conductive film. Thus, the potential of the conductive film corresponding to the contact position can be measured to detect the presence or absence of a touch.
In recent years, in the resistive touch panel switch, it is required to detect a touch range touched by a finger when touching a surface.
Therefore, as a technique for detecting a touch range, for example, patent document 1 proposes a resistive film type touch panel capable of detecting the size of a pressed region. The touch panel is provided with a first path section and a second path section having different resistance values on a connection path connecting the resistive film to the voltage source, and detects a first voltage value and a second voltage value by switching the paths. Thus, the length of the contact area of the two resistive films can be obtained based on the first voltage value and the second voltage value, and the touch range can be detected.
Documents of the prior art
Patent literature
Patent document 1: japanese laid-open patent publication No. 2005-196310
Disclosure of Invention
Problems to be solved by the invention
However, the touch panel of patent document 1 has a problem that the configuration is complicated by arranging a switching unit for switching between the first path unit and the second path unit, and the like.
The present invention has been made to overcome the above-described problems of the prior art, and an object of the present invention is to provide a touch panel switch and a touch panel combination switch that can detect a touch range with a simple structure.
Means for solving the problems
The touch panel switch of the present invention includes: a pair of substrates arranged opposite to each other; a power supply electrode unit having a resistor linearly extended from the vicinity of a reference position set on one base material, and being disposed on the one base material so that a potential gradient is expanded to the periphery of the reference position by supplying power to the resistor; a detection electrode section disposed on one of the substrates so as to extend along the power supply electrode section; and a connection unit that is disposed on the other base material so as to face the power supply electrode unit and the detection electrode unit, and that connects the power supply electrode unit corresponding to a touch range in which the other base material is touched to the detection electrode unit, wherein the touch panel switch detects the touch range by measuring a potential of the power supply electrode unit corresponding to the touch range.
Here, the power feeding electrode portion is preferably arranged so that the potential gradient concentrically extends from the reference position.
The resistor body is formed to extend linearly, the power supply electrode section includes a plurality of power supply electrode extension sections that have a lower resistance than the resistor body and extend so as to sequentially surround the reference position with a space therebetween, and one end of each of the power supply electrode extension sections is connected to the resistor body.
The resistors can be formed to extend spirally from the vicinity of the reference position, and the detection electrode section can be formed to extend spirally between the resistors.
The touch panel combination switch of the present invention is a touch panel combination switch including the touch panel switch described in any one of the above as a first touch panel switch, and further including a second touch panel switch including: a power supply electrode unit having a resistor and disposed on one base material of the first touch panel switch; a detection electrode unit disposed on one of the substrates; and a connection unit which is disposed on the other base material of the first touch panel switch, connects the power supply electrode unit to the detection electrode unit in response to a touch, and connects the resistor of the second touch panel switch to the resistor of the first touch panel switch.
Effects of the invention
According to the present invention, since the power supply electrode portion is disposed on one base material so as to extend the potential gradient to the periphery of the reference position by supplying power to the resistor, the detection electrode portion is disposed on one base material so as to extend along the power supply electrode portion, and the connection portion connects the power supply electrode portion corresponding to the touch range where the other base material is touched to the detection electrode portion, it is possible to provide a touch panel switch and a touch panel combination switch that detect the touch range with a simple structure.
Drawings
Fig. 1 is a diagram showing a configuration of a touch panel device including a touch panel switch according to embodiment 1 of the present invention.
Fig. 2 is a cross-sectional view showing the configuration of the power feeding electrode portion, the detection electrode portion, and the connection portion.
Fig. 3 is a diagram showing a configuration of a touch panel switch according to embodiment 2.
Fig. 4 is a diagram showing a configuration of a touch panel combination switch according to embodiment 3.
Fig. 5 is a diagram showing a configuration of a touch panel combination switch according to embodiment 4.
Fig. 6 is a diagram showing a configuration of a touch panel combination switch according to a modification of embodiment 4.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Fig. 1 shows a configuration of a touch panel device including a touch panel switch according to embodiment 1 of the present invention. The touch panel device includes: a touch panel switch 1, a power supply unit 2, a measurement unit 3, and a calculation unit 4.
The touch panel switch 1 includes a pair of base materials 5a and 5b arranged to face each other, and a power supply electrode portion 6, a detection electrode portion 7, power supply terminals 8a and 8b, and a detection terminal 9 are arranged on one base material 5 a. Further, the connection portion 10 is disposed on the other base material 5 b.
The substrates 5a and 5b include a transparent insulating substrate, and are formed to be flexible and thin in a film shape. The substrates 5a and 5b may be formed of a resin material such as polyethylene terephthalate, for example. Further, on the base materials 5a and 5b, a circular detection area R is set at a touched portion and a reference position P is set at the center of the detection area R. The detection region R may be set to have a diameter of 14mm, for example.
Power feeding electrode portion 6 includes resistor 11 and three power feeding electrode extending portions 12a, 12b, and 12 c.
The resistor 11 has a high resistance value and is arranged to extend linearly from the vicinity of the reference position P to the outside of the detection region R. The resistor 11 is formed to have a constant width and thickness so as to have a uniform resistance distribution in the longitudinal direction. The resistor 11 may be made of carbon, for example.
Feeding electrode extending portions 12a to 12c are arranged to extend the potential gradient around reference position P by feeding power to resistor 11. Specifically, the feeding electrode extensions 12a to 12c extend so as to sequentially surround the reference position P at intervals. At this time, the feeding electrode extensions 12a to 12c are arranged to extend circularly and concentrically to surround the reference position P at equal intervals. The feeding-electrode extensions 12a to 12c are disposed so as to fill the detection region R, the feeding-electrode extension 12a is disposed near the reference position P, the feeding-electrode extension 12c is disposed near the outer edge of the detection region R, and the feeding-electrode extension 12b is disposed between the feeding-electrode extension 12a and the feeding-electrode extension 12 c.
One end of each of the feeding electrode extending portions 12a to 12c is connected to the resistor 11 with a space therebetween. Here, the feeding electrode extending portions 12a to 12c have resistance values much lower than the resistance value of the resistor 11 so that the potential thereof is substantially equal to the potential of the connecting portions with the resistor 11, that is, so that no potential gradient occurs in the longitudinal direction of the feeding electrode extending portions 12a to 12 c. For example, the feeding electrode extensions 12a to 12c may be made of silver or the like.
The detection electrode portion 7 has a contact portion 13 and three detection electrode extension portions 14a, 14b, 14 c.
The connecting portion 13 is disposed in the vicinity of the resistor 11 and linearly extends from the vicinity of the reference position P to the outside of the detection region R.
The detection electrode extension portions 14a to 14c are formed to extend circularly between the feeding electrode extension portions 12a to 12c along the feeding electrode extension portions 12a to 12c, respectively. That is, the detection electrode extension 14a is disposed to extend along the feeding electrode extension 12a between the reference position P and the feeding electrode extension 12a, the detection electrode extension 14b is disposed to extend along the feeding electrode extensions 12a and 12b between the feeding electrode extension 12a and the feeding electrode extension 12b, and the detection electrode extension 14c is disposed to extend along the feeding electrode extensions 12b and 12c between the feeding electrode extension 12b and the feeding electrode extension 12 c. One end of each of the detection electrode extending portions 14a to 14c is connected to the connecting portion 13.
The connecting portion 13 and the detection electrode extension portions 14a to 14c have substantially the same resistance as the feeding electrode extension portions 12a to 12c, and may be made of, for example, silver.
The connecting portion 10 is arranged to cover the detection region R in a planar manner. That is, the connection portion 10 is disposed so as to cover the power feeding electrode portion 6 and the detection electrode portion 7. Thus, when the detection region R is touched with a finger from the outside of the base material 5b, the connection section 10 electrically connects the power supply electrode section 6 corresponding to the touch range S in contact with the finger to the detection electrode section 7. The connecting portion 10 has substantially the same resistance as the feeding electrode extending portions 12a to 12c, and may be made of silver or the like, for example.
The wiring portion connecting the resistor 11, the connecting portion 13, and the resistor 11 to the power supply terminal 8a is covered with a not-shown protective layer (overcoat) portion made of an insulating material or the like so as not to contact the connecting portion 10 and cause a short circuit.
The power supply terminals 8a and 8b are for supplying power to the resistor 11, and the power supply terminal 8a is connected to one end of the resistor 11 and the power supply terminal 8b is connected to the other end of the resistor 11 via a wiring portion made of silver or the like having a lower resistance than the resistor 11.
The detection terminal 9 is connected to one end of the connection portion 13 of the detection electrode portion 7 so as to measure the potential of the power supply electrode portion 6 corresponding to the touch range S.
The power feeding portion 2 is connected to the power feeding terminals 8a and 8b, and feeds power to the resistor body 11 through the power feeding terminals 8a and 8 b.
The measurement unit 3 is connected to the detection terminal 9, and measures the potential of the power supply electrode unit 6 corresponding to the touch range S via the detection terminal 9.
The calculation unit 4 is connected to the measurement unit 3, and calculates the touch range S based on the potential of the power supply electrode unit 6 measured by the measurement unit 3.
Next, the configurations of the power feeding electrode portion 6, the detection electrode portion 7, and the connection portion 10 will be described in detail.
As shown in fig. 2 (a), the connection section 10 is disposed to face the feeding electrode extension sections 12a to 12c and the detection electrode extension sections 14a to 14c with a predetermined gap therebetween. A gap is formed by a spacer (spacer), not shown, disposed between one of the substrates 5a and the other substrate 5 b.
Here, the feeding electrode extension portions 12a to 12c, the detection electrode extension portions 14a to 14c, and the connection portion 10 are covered with the protection portions 15a, 15b, and 15c, respectively. The protective portions 15a to 15c are for suppressing migration (migration), and may be made of, for example, carbon, a mixture of carbon and silver, or the like. Carbon used in protective portions 15a to 15c preferably has a resistance value that is one order of magnitude or more smaller than the resistance value of carbon used in resistor 11.
As described above, since the connection portion 10 is disposed to face the feeding electrode extension portions 12a to 12c and the detection electrode extension portions 14a to 14c, when the other base material 5b is touched by the finger F, as shown in fig. 2 (b), the connection portion 10 is bent together with the other base material 5b in the touch range S touched by the finger F, and the feeding electrode extension portions 12a and 12b and the detection electrode extension portions 14a and 14b corresponding to the touch range S are connected by the connection portion 10.
Next, the operation of the present embodiment will be described.
First, as shown in fig. 1, power is supplied from the power supply portion 2 to the resistor 11 through the power supply terminals 8a and 8b, and a potential gradient is formed in the resistor 11. Here, each of the feeding electrode extending portions 12a to 12c has a resistance value lower than that of the resistor 11 so that the potential thereof is substantially equal to the potential of the connection portion with the resistor 11. Therefore, the power feeding electrode extensions 12a to 12c are formed to intermittently draw the potential of the resistor 11 to the detection region R so that the same potential gradient as that of the resistor 11 is expanded to the detection region R. Thereby, a potential gradient extending from the reference position P to the periphery is formed in the detection region R.
Next, as shown in fig. 2 (a) and (b), when the detection region R of the other base material 5b is touched with the finger F, the feeding electrode extension portions 12a and 12b and the detection electrode extension portions 14a and 14b corresponding to the touch range S of the finger F are connected by the connection portion 10. Thus, the measuring unit 3 measures the potential of the resistor 11 drawn out by the feeding electrode extension 12b via the detection electrode extension 14 b.
At this time, the connection portion 10 is not directly connected to the resistor 11 by touch, but connected to the feeding electrode extending portions 12a to 12 c. When the connecting portion 10 is directly connected to the resistor body 11 having a high resistance value and presses the resistor body 11, the potential measured by the measuring portion 3 may fluctuate depending on the pressure. Therefore, by connecting the connection portion 10 to the feeding electrode extending portions 12a to 12c, the variation in the potential measured by the measuring portion 3 is suppressed, and the potential of the resistor 11 can be accurately measured. Further, since the detection electrode portion 7 has a resistance value much lower than that of the resistor 11, it is possible to accurately measure without changing the potential of the feeding electrode extension portions 12a to 12 c.
The feeding electrode extensions 12a to 12c are formed to intermittently draw the potential of the resistor 11. Therefore, the potential of the feeding electrode extension portion 12b corresponding to the touch range S can be clearly distinguished from the potentials of the other feeding electrode extension portions 12a and 12c, and the touch range S can be detected with high reproducibility.
Further, since the touch panel switch 1 has a simple structure in which the feeding electrode extending portions 12a to 12c and the detection electrode extending portions 14a to 14c connected to the resistor 11 are alternately arranged in the detection region R, the size of the touch panel switch can be reduced. Further, since the power feeding electrode portion 6, the detection electrode portion 7, and the connection portion 10 are formed in a planar manner along the base materials 5a and 5b, the touch panel switch 1 can be thinned.
Further, the power supply electrode portion 6 and the detection electrode portion 7 are disposed on the base material 5a, and only the connection portion 10 is disposed on the base material 5b to be touched. The connection portion 10 is only required to be able to connect the power supply electrode portion 6 and a part of the detection electrode portion 7, and its function does not significantly deteriorate with aging. By disposing such a connection portion 10 on the base material 5b, even if the connection portion 10 is slightly deteriorated by bending of the base material 5b due to a touch, the function of the touch panel switch 1 can be maintained, and a failure of the touch panel switch 1 can be suppressed.
In this way, the potential of the resistor 11 measured by the measuring unit 3 is output from the measuring unit 3 to the calculating unit 4. The calculation unit 4 calculates the touch range S based on the input potential of the resistor body 11.
According to the present embodiment, the power feeding electrode extensions 12a to 12c are disposed on the base material 5a so that the potential gradient is expanded to the periphery of the reference position P by feeding power to the resistor 11, the detection electrode extensions 14a to 14c are disposed on the base material 5a so as to extend along the power feeding electrode extensions 12a to 12c, and the connection portion 10 is disposed on the base material 5b so as to face the power feeding electrode extensions 12a to 12c and the detection electrode extensions 14a to 14c, so that the touch panel switch 1 for detecting the touch range S can be formed with a simple structure.
In embodiment 1 described above, the power feeding electrode portion 6 is arranged such that the power feeding electrode extension portions 12a to 12c are connected to the resistor 11, but is not limited to the arrangement of the power feeding electrode extension portions 12a to 12c as long as the potential gradient can be formed to extend around the reference position P by supplying power to the resistor 11.
For example, as shown in fig. 3, the power feeding electrode portion 21 and the detection electrode portion 22 can be disposed instead of the power feeding electrode portion 6 and the detection electrode portion 7 of embodiment 1.
The power feeding electrode portion 21 has a resistor 23 having a high resistance value. The resistor 23 is arranged to extend spirally from the vicinity of the reference position P, that is, to surround the reference position P in a concentric manner. The resistor 23 is arranged to extend at equal intervals from the vicinity of the reference position P to the vicinity of the outer edge of the detection region R so as to fill the detection region R. The resistor 23 may be made of carbon, for example.
The detection electrode portion 22 is formed to extend spirally along the resistor 23 between the resistors 23. That is, the detection electrode section 22 is arranged to extend at equal intervals from the vicinity of the reference position P to the vicinity of the outer edge portion of the detection region R so as to fill the detection region R. The detection electrode portion 22 has a resistance value much lower than that of the resistor 23 so as not to generate a potential gradient in the longitudinal direction, and may be made of, for example, silver or the like.
Further, there are provided: a wiring section 24a connecting the resistor 23 to the power supply terminal 8a, a wiring section 24b connecting the resistor 23 to the power supply terminal 8b, and a wiring section 24c connecting the detection electrode section 22 to the detection terminal 9.
The wiring portion 24a is arranged to connect one end of the resistor 23 located near the reference position P and the power supply terminal 8 a. In the wiring portion 24a, a protective layer (undercoat) portion 25 made of an insulating material or the like is disposed between the resistor 23 and the detection electrode portion 22 in a portion extending from one end of the resistor 23 to the outside of the detection region R so as not to be in contact with the resistor 23 and the detection electrode portion 22 and short-circuited. Similarly, in the wiring portion 24a, a not-shown sheath portion made of an insulating material or the like is disposed between the connection portion 10 and a portion extending from one end of the resistor 23 to the outside of the detection region R so as not to be in contact with the connection portion 10 and short-circuited.
The wiring portion 24b is arranged to connect the other end of the resistor 23 located near the outer edge of the detection region R and the power supply terminal 8 b.
The wiring portion 24c is disposed so as to connect a portion of the detection electrode portion 22 located near the outer edge portion of the detection region R and the detection terminal 9.
The wiring portions 24a to 24c have substantially the same resistance as the detection electrode portion 22, and may be made of, for example, silver.
According to such a configuration, when the detection region R is touched with the finger F, a part of the resistor 23 corresponding to the touch range S of the finger F and the detection electrode portion 22 are connected by the connection portion 10. This allows the measuring unit to measure the potential of the resistor 23 at the portion corresponding to the touch range S. Here, since the resistor 23 is formed to extend in a spiral shape, a potential gradient that continuously extends around the reference position P can be formed, and a change in the touch range S can be continuously detected.
According to the present embodiment, since the resistor 23 is formed to extend in a spiral shape, it is possible to continuously detect a change in the touch range S and to detect a slight change in the touch range S.
In embodiments 1 and 2 described above, one touch panel switch 1 is disposed, but a plurality of touch panel switches may be connected to form a touch panel combination switch.
Fig. 4 shows a configuration of a touch panel combination switch according to embodiment 3 of the present invention. This touch panel combination switch includes the touch panel switch 1 of embodiment 1 and a new touch panel switch 31.
The touch panel switch 31 has the same configuration as the touch panel switch 1, and has a power supply electrode portion 32 and a detection electrode portion 33 disposed on the base 5a, and a connection portion 34 disposed on the base 5 b.
The power feeding electrode portion 32 has a resistor 35 and three power feeding electrode extending portions 36a, 36b, and 36 c. The resistor 35 is arranged to linearly extend from the vicinity of the reference position Pa to the outside of the detection region Ra. The feeding electrode extensions 36a to 36c extend in a circular shape so as to sequentially surround the reference position Pa at intervals from each other, and one end portion is connected to the resistor 35.
The detection electrode portion 33 has a connecting portion 37 and three detection electrode extension portions 38a, 38b, and 38 c. The connecting portion 37 is arranged to extend linearly from the vicinity of the reference position Pa to the outside of the detection region Ra. The detection electrode extensions 38a to 38c are formed to extend circularly along the feeding electrode extensions 36a to 36c between the feeding electrode extensions 36a to 36c, respectively, and one end is connected to the connection portion 37.
The connection unit 34 connects the power supply electrode unit 32 corresponding to the touch range Sa to the detection electrode unit 33, and is disposed on the base material 5b so as to cover the power supply electrode unit 32 and the detection electrode unit 33.
Further, a connection portion 39 is disposed to connect the resistor 11 of the touch panel switch 1 and the resistor 35 of the touch panel switch 31 in series. The connection portion 39 is formed of a resistor having a high resistance value, similarly to the resistors 11 and 35, and is formed to extend linearly between the resistor 11 and the resistor 35. One end of the connecting portion 39 is connected to the other end of the resistor 11 located outside the detection region R, and the other end of the connecting portion 39 is connected to the other end of the resistor 35 located outside the detection region Ra. The coupling portion 39 is formed with a constant width and thickness so as to have a uniform resistance distribution in the longitudinal direction, and may be made of carbon, for example.
One end of the resistor 11 is connected to the power supply terminal 8a, and one end of the resistor 35 is connected to the power supply terminal 8 b. On the other hand, one end of the contact portion 13 of the touch panel switch 1 and one end of the contact portion 37 of the touch panel switch 31 are connected to the detection terminal 9, respectively.
With this configuration, the potential of the resistor 11 corresponding to the touch range S of the detection region R and the potential of the resistor 35 corresponding to the touch range Sa of the detection region Ra can be measured, and the touch ranges S and Sa can be detected. Here, by disposing the power feeding electrode portions 6 and 32 and the detection electrode portions 7 and 33 on the base material 5a, the touch panel switch 1 and the touch panel switch 31 can be easily connected via the connection portion 39. Further, by connecting resistor 11 and resistor 35 in series, the potentials of both can be measured by one measuring unit, and the structure of the touch panel combination switch can be simplified. Further, by forming the connection portion 39 of the resistor, the difference between the potential of the resistor 11 and the potential of the resistor 35 measured by the measuring portion can be increased, and the measured values of the touch range S and the touch range Sa can be clearly distinguished.
When the touch panel switch 1 and the touch panel switch 31 are touched at the same time, the touch ranges S and Sa can be calculated by a conventional method for a resistive film type touch panel. For example, by storing potential information corresponding to a combination of the touch range S of the touch panel switch 1 and the touch range Sa of the touch panel switch 31 in advance as a lookup table and searching the lookup table based on the potential measured by the measuring section, the touch ranges S and Sa can be calculated, respectively.
According to the present embodiment, since the power feeding electrode portion 6 of the touch panel switch 1 and the power feeding electrode portion 32 of the touch panel switch 31 are disposed only on the base material 5a, the touch panel switch 1 and the touch panel switch 31 can be easily connected via the connection portion 39, and a touch panel composite switch can be formed with a simple structure.
In embodiment 3 described above, the touch panel switch 31 has the same configuration as the touch panel switch 1, but is not limited to this configuration as long as the power supply electrode portion 32 and the detection electrode portion 33 can be disposed on the substrate 5a and the resistor 35 can be connected to the resistor 11 of the touch panel switch 1.
For example, as shown in fig. 5, a touch panel switch 41 can be provided instead of the touch panel switch 31 of embodiment 3.
The touch panel switch 41 includes a power supply electrode portion 42, a detection electrode portion 43, and a connection portion 44. The power feeding electrode portion 42 is disposed on the substrate 5a, and includes a resistor 45 and a plurality of power feeding electrode extension portions 46.
The resistor 45 has a high resistance value and is arranged to extend linearly. The resistor 45 is formed to have a constant width and thickness so as to have a uniform resistance distribution in the longitudinal direction, and may be made of carbon, for example. The resistor 45 is preferably formed to have a width larger than that of the resistor 11, and preferably has a total length resistance value in a range of 1.5k Ω to 15k Ω.
The feeding electrode extensions 46 are formed to extend linearly and arranged at equal intervals along the resistor 45, and have one end connected to the resistor 45. That is, the feeding electrode extending portion 46 is formed to extend from the resistor 45 in a comb-tooth shape. Each of the feeding electrode extending portions 46 has a resistance value much lower than that of the resistor 45 so that the potential thereof is substantially equal to the potential of the connecting portion with the resistor 45, and may be made of, for example, silver or the like.
The detection electrode portion 43 is disposed on the substrate 5a, and has a connecting portion 47 and a plurality of detection electrode extension portions 48. The connecting portion 47 is arranged to linearly extend from the detection terminal 9 along the resistor 45. The detection electrode extensions 48 are formed to extend linearly, are arranged at equal intervals along the connecting portion 47, and have one end connected to the connecting portion 47. That is, the detection electrode extension 48 is formed to extend from the connection portion 47 toward the resistor 45 in a comb-tooth shape between the power supply electrode extensions 46.
The connecting portion 47 and the detection electrode extension portion 48 have substantially the same resistance as the feeding electrode extension portion 46, and may be made of, for example, silver.
The connection portion 44 is disposed on the substrate 5b so as to cover the feeding electrode extension portion 46 and the detection electrode extension portion 48 in a planar manner. Therefore, the connection portion 44 is partially bent by the touch of the base material 5b, and electrically connects the power feeding electrode extension portion 46a corresponding to the touch position T to the detection electrode extension portion 48 a. The connecting portion 44 has substantially the same resistance as the feeding electrode extension portion 46, and may be made of, for example, silver.
Further, a connection portion 49 is disposed to connect the resistor 11 of the touch panel switch 1 and the resistor 45 of the touch panel switch 41 in series. The connection portion 49 is formed to extend linearly, and has one end connected to one end of the resistor 11 and the other end connected to one end of the resistor 45. Coupling portion 49 has substantially the same resistance as power feeding electrode extension portion 46, and may be made of, for example, silver.
The other end of the resistor 45 is connected to the power supply terminal 8a, and the other end of the resistor 11 is connected to the power supply terminal 8 b. On the other hand, the connection portion 13 of the touch panel switch 1 is connected to the detection terminal 9 via the connection portion 47 of the touch panel switch 41.
With this configuration, the potential of the resistor 11 corresponding to the touch range S of the touch panel switch 1 and the potential of the power feeding electrode extension 46a corresponding to the touch position T of the touch panel switch 41 can be measured, and the touch panel switch 1 and the touch panel switch 41 having different functions can be easily connected to each other.
Here, since the touch panel switch 41 does not directly connect the connection portion 44 and the resistor 45 by touch, but connects the connection portion 44 and the power feeding electrode extension portion 46, it is possible to suppress variation in the potential measured by the measurement portion and accurately measure the potential of the resistor 45. Further, since the feeding electrode extending portion 46 is formed so as to intermittently draw out the potential of the resistor 45, the potential at the touch position T and the potential at the adjacent portion can be clearly distinguished, and the touch position T can be detected with high reproducibility. When a finger that touches slides in a direction along the resistor 45, the measuring unit detects a continuous potential change, and sequentially calculates the touch position T based on the potential change, thereby recognizing a sliding operation for sliding the finger.
According to the present embodiment, since the power supply electrode portion 6 of the touch panel switch 1 arranged so that the potential gradient extends around the reference position P and the power supply electrode portion 42 of the touch panel switch 41 arranged so that the potential gradient is formed in one direction are connected, the touch range S and the touch position T can be detected with a simple structure.
In embodiment 4, as shown in fig. 6, the touch panel switch 1 of embodiment 2 may be connected to the touch panel switch 41 instead of the touch panel switch 1. Here, the resistor 23 of the touch panel switch 1 and the resistor 45 of the touch panel switch 41 are connected in series by the connection portion 51. In this way, the potential corresponding to the touch range S of the touch panel switch 1 and the potential corresponding to the touch position T of the touch panel switch 41 can be measured with a simple configuration. In this case, it is preferable that the connection portion 51 is formed of a resistor having the same resistance as the resistor 23, and thereby the potential of the resistor 23 measured by the measurement portion and the potential of the resistor 45 can be clearly distinguished.
In the touch panel switches 1 according to embodiments 1 to 4 described above, the power supply electrode portion is disposed so that the potential gradient extends circularly from the reference position P, but the power supply electrode portion is not limited to the potential gradient extending circularly as long as the potential gradient can be disposed so that the potential gradient extends to the periphery of the reference position P. For example, the touch panel switch 1 may be configured such that the power supply electrode portion is arranged to extend the potential gradient from the reference position P in a square shape.
In the touch panel switches 1 according to embodiments 1 to 4 described above, the power supply electrode portion is disposed so as to form a potential gradient that surrounds the reference position P in a circular shape, but the potential gradient is not limited to forming a potential gradient that surrounds the entire circumference of the reference position P as long as the potential gradient can be formed around the reference position P. The power supply electrode portion can form a potential gradient in a range capable of substantially accommodating a finger around the reference position P, and for example, can be disposed so as to form a potential gradient in a range of about 45 ℃.
In the touch panel switches 1 according to embodiments 1 to 4 described above, the power supply electrode portion is disposed such that the potential gradient extends concentrically from the reference position P, but the power supply electrode portion may be disposed such that the potential gradient extends around the reference position P, and is not limited to the potential gradient extending concentrically. For example, the touch panel switch 1 may be configured such that the potential gradient of the portion corresponding to the finger base side of the finger is more greatly expanded than the potential gradient corresponding to the fingertip side.
In the touch panel switches 1 according to embodiments 1 to 4 described above, the reference position P is set at the center of the detection area R, but the reference position P may be set at a position offset from the center of the detection area R as long as the power supply electrode unit can be arranged so as to expand the potential gradient to the periphery of the reference position P.
In embodiments 1 to 4, the connection portion 10 is disposed so as to cover the power supply electrode portion and the detection electrode portion in a planar manner, but is not limited to the planar arrangement as long as the power supply electrode portion corresponding to the touch range S can be disposed so as to face the power supply electrode portion and the detection electrode portion and the power supply electrode portion can be connected to the detection electrode portion. For example, the connection unit 10 may be arranged to extend linearly so as to face the power supply electrode unit and the detection electrode unit.
Description of the reference numerals
1. 31, 41: a touch panel switch; 2: a power supply unit; 3: a measuring section; 4: a calculation section; 5a, 5 b: a substrate; 6. 21, 32, 42: a power supply electrode section; 7. 22, 33, 43: detecting an electrode part; 8a, 8 b: a power supply terminal; 9: a detection terminal; 10. 34, 44: a connecting portion; 11. 23, 35, 45: a resistor body; 12a, 12b, 12c, 36a, 36b, 36c, 46 a: a feeding electrode extension; 13. 37, 47: a connecting part; 14a, 14b, 14c, 38a, 38b, 38c, 48 a: detecting an electrode extension; 15a, 15b, 15 c: a protection part; 24a, 24b, 24 c: a wiring section; 39. 49, 51: a connecting portion; r, Ra: detecting a region; p, Pa: a reference position; f: a finger; s, Sa: a touch range; t: the touch position.
Claims (3)
1. A touch panel switch is provided with:
a pair of base materials arranged opposite to each other;
a power supply electrode unit which has a resistor spirally extending from the vicinity of a reference position set on one base material and is disposed on the one base material so that a potential gradient is expanded to the periphery of the reference position by supplying power to the resistor;
a detection electrode section having a resistance value much lower than the resistance bodies so as not to generate a potential gradient in a longitudinal direction, and disposed on the one base material so as to extend spirally along the power supply electrode section between the resistance bodies; and
a connection unit that is disposed on the other base material so as to face the power supply electrode unit and the detection electrode unit, and connects the power supply electrode unit corresponding to a touch range in which the other base material is touched to the detection electrode unit,
the touch panel switch detects the touch range by measuring a potential of the power supply electrode section corresponding to the touch range.
2. The touch panel switch of claim 1,
the power supply electrode section is disposed so as to concentrically spread the potential gradient from the reference position.
3. A touch panel combination switch configured by the touch panel switch of claim 1 or 2 as a first touch panel switch and further provided with a second touch panel switch,
the second touch panel switch includes:
a power supply electrode unit having a resistor and disposed on one base material of the first touch panel switch;
a detection electrode unit disposed on one of the substrates; and
a connection unit that is disposed on the other base material of the first touch panel switch and connects the power supply electrode unit to the detection electrode unit in response to a touch,
the resistor of the second touch panel switch is connected to the resistor of the first touch panel switch.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-234956 | 2017-12-07 | ||
| JP2017234956A JP6711345B2 (en) | 2017-12-07 | 2017-12-07 | Touch panel switch and touch panel combined switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109901758A CN109901758A (en) | 2019-06-18 |
| CN109901758B true CN109901758B (en) | 2022-09-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811202220.7A Active CN109901758B (en) | 2017-12-07 | 2018-10-16 | Touch panel switch and touch panel combination switch |
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| Country | Link |
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| JP (1) | JP6711345B2 (en) |
| CN (1) | CN109901758B (en) |
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| EP2026178A1 (en) * | 2007-08-10 | 2009-02-18 | IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A. | Touchpad with strip-shaped input |
| WO2010079551A1 (en) * | 2009-01-07 | 2010-07-15 | シャープ株式会社 | Touch panel device, manufacturing method therefor, and display device |
| JP2016015086A (en) * | 2014-07-03 | 2016-01-28 | ファナック株式会社 | Resistance film type touch panel |
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| US5159159A (en) * | 1990-12-07 | 1992-10-27 | Asher David J | Touch sensor and controller |
| JP2004139144A (en) * | 2002-10-15 | 2004-05-13 | Alps Electric Co Ltd | Touch panel |
| CN101957703A (en) * | 2009-07-17 | 2011-01-26 | 比亚迪股份有限公司 | Resistance type touch detecting system and touch screen thereof |
| CN202075723U (en) * | 2011-01-14 | 2011-12-14 | 万达光电科技股份有限公司 | Circular touch control panel |
| CN105934733A (en) * | 2013-09-27 | 2016-09-07 | 森赛尔股份有限公司 | Resistive touch sensor system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6711345B2 (en) | 2020-06-17 |
| JP2019101958A (en) | 2019-06-24 |
| CN109901758A (en) | 2019-06-18 |
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