JPH10321075A - Membrane-type switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a switch which can be easily equipped with a complete waterproof structure, also having durability, is easy to manufacture, able to have manufacturing cost reduced, is simple in structure, and further having a structure not only able to be reduced in thickness but enabling on-off sensitivity to be kept well. SOLUTION: This switch is equipped with a first basic material 10, wherein an electrode pattern 13 is formed by printing on a flexible board 11 and a pressure-sensing resistance film 15 is formed thereon by printing, and a second basic material 20 wherein an electrode pattern 23 is formed by printing on a flexible board 21. Here, this switch is constituted such that the first basic material 10 and the second basic material 20 are placed one over the other, such that the pressure-sensing resistance film 15 formed on the first basic material 10 and the electrode pattern 23 formed on the second basic material 20 are brought into contact with each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a membrane switch using a pressure-sensitive resistive film.

[0002]

2. Description of the Related Art Conventional membrane type switches include:
There was the following structure. As shown in FIG. 13, two flexible substrates 10
The electrode patterns 103 and 123 are formed by printing on the first and second flexible substrates 101 and 121 respectively.
1 are overlapped via a spacer 131, and the spacer 13
1 in the space 133 provided in the first electrode pattern 1
03 and 123, and the upper flexible substrate 12
A structure in which the electrode pattern 123 is lowered by pressing 1 to turn on both electrode patterns 103 and 123.

As shown in FIG. 14, an electrode pattern 163 is formed on a substrate 161 by printing.
A structure in which a pressure-sensitive resistive film 165 is printed and formed thereon, and an electrode pattern 167 is further printed and formed on the pressure-sensitive resistive film 165.

When the surface of the electrode pattern 167 is pressed in the direction of arrow a by a key top or the like, pressure is applied to the pressure-sensitive resistive film 165 in the thickness direction, and the pressure-sensitive resistive film 16
The resistance value in the thickness direction of the part where the pressure of 5 is applied decreases,
The resistance between the two electrode patterns 163 and 167 decreases, and the electrode patterns are turned on.

[0005]

However, in the case of the conventional example shown in FIG. 13, when the flexible substrate 121 is pressed, an air escape hole must be provided for expelling the air in the gap 133 to the outside. It was difficult to make the structure.

Further, between the two electrode patterns 103 and 123,
Since a certain insulation distance is required, it is not possible to cope with a demand for further thinning.

On the other hand, in order to reduce the thickness, the flexible substrate 121 is used.
When the thickness of the flexible substrate is further reduced,
The flexible substrate 1 is repeatedly pressed many times.
21 while the flexible substrate 12 is being moved.
1 is fattered, and a problem arises in its durability.

Next, in the case of the conventional example shown in FIG. 14, since only three layers of films are required to be formed on one substrate 161, the thickness can be sufficiently reduced.

However, in the case of this membrane type switch, the electrode pattern 163, the pressure-sensitive resistive film 165, and the electrode pattern 167 are laminated by screen printing. The resistance value becomes considerably small.

Therefore, in order to surely turn off the electrode patterns 163 and 167 in a non-pressed state, it is necessary to maintain the resistance value of the pressure-sensitive resistive film 165 in a large state. As the material of the resistance film 165, a material having low sensitivity, that is, a material whose resistance value does not easily change due to a change in stress (specifically, a material with less conductive powder to be kneaded) must be used.

However, when a material having low sensitivity is used as the pressure-sensitive resistance film 165, there is a problem that it is difficult to turn on the switch when the switch is pressed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has as its object the purpose of being able to easily provide a completely waterproof structure, being durable, easy to manufacture, and reducing manufacturing costs. Another object of the present invention is to provide a membrane-type switch having a structure that is simple in structure, can be made thinner, and can maintain good on / off sensitivity.

[0013]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a first substrate having an electrode pattern formed on a substrate and a pressure-sensitive resistive film formed thereon, A second substrate formed with an electrode pattern formed thereon or a pressure-sensitive resistive film is further formed on the electrode pattern, and a pressure-sensitive resistive film formed on the first substrate, Membrane switch by laminating the first substrate and the second substrate so as to contact the electrode pattern formed on the second substrate or the pressure-sensitive resistive film further formed on the electrode pattern Configured. The present invention also provides a first base material having a plurality of electrode patterns formed close to each other on a substrate, and a pressure-sensitive resistive film formed on the plurality of electrode patterns so as to cover the plurality of electrode patterns; A second substrate formed with a pattern or further formed with a pressure-sensitive resistive film on the conductive pattern, the pressure-sensitive resistive film formed on the first substrate, The first substrate and the second substrate were overlapped so as to contact the conductor pattern formed on the second substrate or the pressure-sensitive resistance film further formed on the conductor pattern to form a membrane switch. . In addition, the present invention provides a first base material formed by bringing a plurality of electrode patterns close to each other on a substrate, and a second base material formed by forming a conductor pattern on the substrate and further forming a pressure-sensitive resistive film thereon. The first substrate and the second substrate so as to contact the plurality of electrode patterns formed on the first substrate and the pressure-sensitive resistive film formed on the second substrate. Were laminated to form a membrane switch. Also, the present invention provides a first base material having an electrode pattern formed on a substrate and a pressure-sensitive resistive film formed thereon, and an electrode pattern formed on the substrate or A second substrate formed with a pressure-sensitive resistive film, the pressure-sensitive resistive film formed on the first substrate, and the electrode pattern or the electrode pattern formed on the second substrate The first substrate and the second substrate were overlapped with each other in a state where the pressure-sensitive resistance film further formed thereon was opposed to the pressure-sensitive resistance film by a predetermined distance to form a membrane switch. The present invention also provides a first base material having a plurality of electrode patterns formed close to each other on a substrate, and a pressure-sensitive resistive film formed on the plurality of electrode patterns so as to cover the plurality of electrode patterns; A second substrate formed with a pattern or further formed with a pressure-sensitive resistive film on the conductive pattern, the pressure-sensitive resistive film formed on the first substrate, The first substrate and the second substrate are overlapped with each other in a state where the conductor pattern formed on the second substrate or the pressure-sensitive resistive film further formed on the conductor pattern is opposed to each other with a predetermined distance therebetween, and a membrane is formed. A type switch was constructed. Further, the present invention, a first base material formed by approaching a plurality of electrode patterns on the substrate,
A second substrate having a conductor pattern formed on a substrate and a pressure-sensitive resistive film formed thereon, further comprising a plurality of electrode patterns formed on the first substrate and the second substrate; The first substrate and the second substrate were overlapped with each other in a state where the pressure-sensitive resistance film formed on the material was opposed to the pressure-sensitive resistance film by a predetermined distance to form a membrane switch.

[0014]

Embodiments of the present invention will be described below in detail with reference to the drawings. [First Embodiment] FIGS. 1A and 1B are diagrams showing a membrane switch according to a first embodiment of the present invention.
2A is a plan view of a main part, and FIG. 2B is a sectional side view of the main part. FIG. 2 is a view showing a method of manufacturing the membrane type switch. As shown in both figures, this membrane switch is configured by overlapping a first base material 10 and a second base material 20. Hereinafter, each component will be described.

The first substrate 10 comprises a flexible substrate 11
An electrode pattern 13 is formed by screen printing, and a pressure-sensitive resistive film 15 is further formed by screen printing.

The flexible substrate 11 is made of, for example, a synthetic resin film having flexibility (eg, PET).
(Polyethylene terephthalate) film having a thickness of about 75 μm to 188 μm is preferable).

Next, the electrode pattern 13 is formed by screen printing a silver paste into a substantially circular shape.
A circuit pattern 17 formed simultaneously with the electrode pattern 13 is drawn out of the electrode pattern 13. The thickness of the electrode pattern 13 is 10 μm in this embodiment.
m (the thickness is preferably about 4 μm to 20 μm).

Next, the pressure-sensitive resistance film 15 is formed by printing a pressure-sensitive material having a function of reducing the resistance value in the thickness direction by pressing in the thickness direction. The thickness of the pressure-sensitive resistance film 15 is preferably about 15 to 100 μm.

In the pressure-sensitive resistive film 15 according to the present embodiment,
An anisotropic pressure-sensitive resistive film whose resistance changed only in the pressing direction (that is, only in the thickness direction) and remained insulated in other directions was used. As the material of the pressure-sensitive resistance film 15, a material obtained by mixing conductive powder in an elastic material is used. Specifically, in this embodiment, silicon rubber is used as the elastic material,
Using carbon powder as conductive powder, silicon rubber 5.0
1.0 to 2.0 parts by weight of carbon powder (0.1 to 2.0 parts by weight of an insulating filler with respect to silicon depending on the case) is mixed with the high-boiling ester. Used in a solvent. Further, as the carbon powder, general carbon black in the form of fine powder in the order of submicrons is used.

The elastic material is not limited to silicone rubber, but may be other various rubber materials (for example, butadiene rubber, acrylonitrile / butadiene / styrene rubber), or thermoplastic elastomers (for example, styrene-based thermoplastic elastomer, olefin-based rubber). Materials having various elasticity such as thermoplastic elastomers), polyvinyl chloride / vinyl acetate resin materials, and polyethylene can be used.

As the material of the conductive powder, besides carbon black, spherical graphite, bead-like graphite, scale-like graphite, flake-like graphite, earth-like graphite and the like may be used, or a mixture thereof. Other conductive metal powders may be used.

On the other hand, the second substrate 20 is formed by screen-printing an electrode pattern 23 and a circuit pattern 25 drawn from the electrode pattern 23 on a flexible substrate 21.

Here, the same flexible substrate 21 as the flexible substrate 11 is used.

The same electrode pattern 23 as that of the electrode pattern 13 is used.

To manufacture this membrane type switch, as shown in FIG. 2, electrode patterns 13 and 23 and circuit patterns 17 and 25 are screen-printed on the same surface of one PET film. A pressure-sensitive resistive film 15 is formed on the electrode pattern 13 by printing, and the PET film is placed on the electrode pattern 13 so that the two electrode patterns 13 and 23 face each other.
The two electrode patterns 13 and 23 are opposed to each other via the pressure-sensitive resistive film 15 by being folded in half.
The membrane type switch shown in FIG.

In the case of the present embodiment, the pressure-sensitive resistive film 15 and one of the electrode patterns 23 are not bonded at all, and are simply in a state of touching each other. Therefore, the contact resistance value at the contact surface between the two is large.

Therefore, even if a material having high sensitivity as the material of the pressure-sensitive resistive film 15, that is, a material whose resistance value is easily changed with respect to a change in stress, is used, the contact resistance value can be kept large. In the state, both electrode patterns 13 and 2
3 can be reliably kept in the off state.

On the other hand, when the electrode pattern 23 is pressed from above the flexible substrate 21 as shown by an arrow F in FIG. 1B, the resistance of the pressed portion in the thickness direction of the pressure-sensitive resistive film 15 becomes small. Then, between the two electrode patterns 13 and 23 is turned on.

By the way, at the time of this pressing, the electrode pattern 23 is strongly pressed against the pressure-sensitive resistance film 15 by the pressing force, so that the contact resistance value on the contact surface between them is reduced. At the same time, in the case of the present invention, since the highly sensitive pressure-sensitive resistive film 15 is used as described above, the space between the two electrode patterns 13 and 23 is immediately turned on in response to the pressing.

That is, in the present embodiment, the electrode patterns 23 are not printed on the pressure-sensitive resistive film 15, but are formed on separate substrates, and are superposed so that they are in contact with each other. In this case, the resistance between the two electrode patterns 13 and 23 can be maintained large, and the off state can be reliably maintained. In the pressed state, the two electrode patterns 13 and 23 can be turned on with high sensitivity.

[Second Embodiment] FIG. 3 is a side sectional view of a main part of a membrane switch according to a second embodiment of the present invention. FIG. 4 is a diagram showing a method of manufacturing the membrane switch. As shown in both figures, this membrane-type switch is also configured by overlapping a first base material 30 and a second base material 40. The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

This embodiment differs from the first embodiment only in that not only the pressure-sensitive resistive film 15-1 is formed on the electrode pattern 13 by printing, but also on the electrode pattern 23, as shown in FIG. The only difference is that the pressure-sensitive resistive film 15-2 is formed by printing.

The two pressure-sensitive resistive films 15-1 and 15-2 are not bonded at all, but are simply in contact with each other. Therefore, the contact resistance value at the contact surface between the two is large.

For this reason, even in this embodiment, even if a material having high sensitivity is used as the material of the pressure-sensitive resistive films 15-1 and 15-2, the contact resistance value between them can be kept large, so that the pressure-sensitive resistive films 15-1 and 15-1 can be reliably maintained in the non-pressed state. The off state can be maintained. On the other hand, when this is pressed, the contact resistance value is reduced, and at the same time, the electrode patterns 13 and 23 can be turned on with high sensitivity by the highly sensitive pressure-sensitive resistance films 15-1 and 15-2.

[Third Embodiment] FIGS. 5A, 5B,
(C) is a diagram showing a membrane switch according to a third embodiment of the present invention, wherein (a) is a plan view of a main part, (b) is a cross-sectional view of a main part, and (c) of FIG. FIG. FIG. 6 is a diagram showing a method of manufacturing the membrane switch. As shown in both figures, in the case of this membrane switch, the first base member 50 and the second base member 60 are overlapped.

In this embodiment, the two electrode patterns 53 and 55 are printed on the flexible substrate 51 so as to be close to each other, and furthermore, a sense is provided so as to cover a portion where the two electrode patterns 53 and 55 are close to each other. A first substrate 50 formed by printing and forming a piezoresistive film 57;
Second base material 6 on which conductor pattern 63 is formed by printing
0, the pressure-sensitive resistive film 57 formed on the first base material 50 and the conductor pattern 6 formed on the second base material 60.
The first base member 50 and the second base member 60 are overlapped so as to contact the third base member 3.

Also in this embodiment, the pressure-sensitive resistive film 57 and the conductor pattern 63 are not bonded at all, and are in a state where they are simply in contact with each other. Therefore, the contact resistance value at the contact surface between the two is large.

On the other hand, when the conductor pattern 63 is pressed from above the flexible substrate 61, the resistance in the thickness direction of the pressed portion of the pressure-sensitive resistive film 57 becomes small. Pattern 55
And the resistance value between the conductor pattern 63 becomes smaller,
As a result, the space between the two electrode patterns 53 and 55 is turned on.

By the way, at the time of the pressing, the conductor pattern 63 is strongly pressed against the pressure-sensitive resistance film 57 by the pressing force, so that the contact resistance value at the contact surface between the two is reduced. At the same time, in the case of the present invention, since the highly sensitive pressure-sensitive resistive film 57 is used as described above, the space between the two electrode patterns 53 and 55 is immediately turned on in response to the pressing.

That is, also in the present embodiment, the conductor pattern 63 is not printed on the pressure-sensitive resistive film 57, but is formed on separate substrates and then superposed so that they are in contact with each other. In this case, the resistance between the two electrode patterns 53 and 55 can be maintained large, and the OFF state can be reliably maintained. In the pressed state, the space between the two electrode patterns 53 and 55 can be turned on with high sensitivity.

[Fourth Embodiment] FIG. 7 is a side sectional view of a main part of a membrane switch according to a fourth embodiment of the present invention. FIG. 8 is a diagram showing a method of manufacturing the membrane switch. In this embodiment, the same parts as those in the third embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

This embodiment is different from the third embodiment in that, as shown in FIGS.
The pressure-sensitive resistive film 57-1 is not only formed on the conductive patterns 63 and 55 by printing, but also on the conductive pattern 63.
Is printed only.

The two pressure-sensitive resistive films 57-1 and 57-2 are not bonded at all, and are simply in a state of touching each other. Therefore, the contact resistance value at the contact surface between the two is large.

For this reason, even in this embodiment, even if a material having high sensitivity is used as the material of the pressure-sensitive resistive films 57-1 and 57-2, a large contact resistance value can be maintained between the two, so that the pressure-sensitive resistive films 57-1 and 57-2 can be reliably maintained in a non-pressed state. The off state can be maintained. On the other hand, when this is pressed, the contact resistance value is reduced, and at the same time, the pressure sensitive resistance films 57-1 and 57-2 with high sensitivity can turn on both electrode patterns 53 and 55 with high sensitivity.

[Fifth Embodiment] FIG. 9 is a side sectional view of a main part of a membrane switch according to a fifth embodiment of the present invention. FIG. 10 is a view showing a method of manufacturing the membrane switch. In this embodiment, the same parts as those in the third embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

This embodiment is different from the third embodiment in that, as shown in FIGS. 9 and 10, instead of printing a pressure-sensitive resistive film on the electrode patterns 53 and 55, The only difference is that the pressure-sensitive resistance film 65 is formed by printing.

There is no adhesion between the electrode patterns 53 and 55 and the pressure-sensitive resistive film 65, and the two are simply in contact with each other. Therefore, the contact resistance value at the contact surface between the two is large.

For this reason, even in this embodiment, even if a material having high sensitivity is used as the material of the pressure-sensitive resistance film 65, the contact resistance value between the electrode patterns 53 and 55 can be kept large. The off state can be reliably maintained. On the other hand, when this is pressed, the contact resistance value is reduced, and at the same time, the electrode patterns 53 and 55 can be turned on with high sensitivity by the pressure sensitive resistance film 65 having high sensitivity.

[Sixth Embodiment] FIG. 11 is a side sectional view of a main part of a membrane switch according to a sixth embodiment of the present invention. As shown in the figure, this membrane switch also
The first base member 10 and the second base member 20 are overlapped with each other. The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

The difference between this embodiment and the first embodiment is that a spacer 70 is interposed between the first base material 10 and the second base material 20, and thereby a portion of the hole 71 provided in the spacer 70 is provided. Pressure-sensitive resistive film 1 provided on first base material 10
5 and the electrode pattern 23 provided on the second base material 20 is opposed to each other with a predetermined space therebetween.

In this embodiment, in the non-pressing state, the pressure-sensitive resistive film 15 and the electrode pattern 23 are surely separated from each other, so that both of them are more reliably turned off. When the flexible substrate 21 is pressed from above, the flexible substrate 21 bends and the electrode pattern 23 is pressed against the pressure-sensitive resistive film 15, so that the contact resistance value at the contact surface between the two is reduced, and at the same time, the pressure-sensitive resistance is reduced. The resistance in the thickness direction of the pressed portion of the film 15 decreases, and the space between the two electrode patterns 13 and 23 is immediately and reliably turned on.

In this embodiment, since a predetermined gap is provided between the electrode pattern 23 and the pressure-sensitive resistive film 15 with the spacer 70 interposed, the thickness of the membrane switch is larger than that of each of the above embodiments. However, since the electrode pattern 23 and the pressure-sensitive resistive film 15 may come into contact with each other, the gap may be considerably thinner than the gap between the two electrode patterns 103 and 123 in the case of the prior art shown in FIG. it can.

In this embodiment (the same applies to the following embodiments), the pressure-sensitive resistive film 15 and the electrode pattern 23 are surely separated from each other in the non-pressed state. By doing so, the sensitivity at the time of ON can be improved.

Since the gap between the electrode pattern 23 and the pressure-sensitive resistive film 15 can be reduced as described above, the amount of flexing of the flexible substrate 21 when the flexible substrate 21 is pressed to turn it on is reduced. Since it is possible, the settling of the flexible substrate 21 is also small.

The spacer 70 may be formed by printing or a resin film.

If the electrode pattern 23 and the pressure-sensitive resistive film 15 are opposed to each other with a predetermined space therebetween, the spacer 70 is not necessarily required.

Note that this embodiment may be applied to the second embodiment shown in FIG. 3, and the pressure-sensitive resistive films 15-1 and 15-2 may be separated by a spacer or the like.

[Seventh Embodiment] FIG. 12 is a side sectional view of a main part of a membrane switch according to a seventh embodiment of the present invention. The membrane-type switch shown in the figure is also configured by overlapping the first base member 50 and the second base member 60, as in the third embodiment. The same portions as those in the third embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

The difference between this embodiment and the third embodiment is that a spacer 75 is interposed between the first base material 50 and the second base material 60, whereby a portion of the hole 76 provided in the spacer 75 is formed. The pressure-sensitive resistive film 5 provided on the first substrate 50
7 and the conductor pattern 63 provided on the second base material 60 is opposed to each other with a predetermined space therebetween.

In the case of this embodiment, in the non-pressed state, the pressure-sensitive resistive film 57 and the conductor pattern 63 are surely separated from each other. Therefore, the off state of both is further ensured. When the flexible substrate 61 is pressed from above, the flexible substrate 61 bends and the conductor pattern 63 is pressed against the pressure-sensitive resistance film 57, so that the contact resistance value on the contact surface between the two becomes small and The resistance in the thickness direction of the pressed portion of the resistance film 57 decreases, and the space between the two electrode patterns 53 and 55 is immediately and reliably turned on.

In this embodiment, since a predetermined gap is provided between the conductor pattern 63 and the pressure-sensitive resistive film 57 with the spacer 75 interposed therebetween, the thickness of the membrane switch is larger than that of each of the above embodiments. However, since the conductor pattern 63 and the pressure-sensitive resistive film 57 may come into contact with each other, the gap may be considerably thinner than the gap between the two electrode patterns 103 and 123 in the case of the prior art shown in FIG. it can.

Since the gap between the conductor pattern 63 and the pressure-sensitive resistive film 57 can be reduced as described above, the amount of flexing of the flexible substrate 61 when the flexible substrate 61 is pressed to turn it on is reduced. Since it is possible, the flexible substrate 61 has a small settling.

The spacer 75 may be formed by printing or a resin film.

If the conductor pattern 63 and the pressure-sensitive resistive film 57 face each other with a predetermined space therebetween, the spacer 75 is not necessarily required.

This embodiment may be applied to the fourth embodiment shown in FIG. 7 so that both the pressure-sensitive resistive films 57-1 and 57-2 are separated from each other by a spacer or the like. Further, this embodiment may be applied to the fifth embodiment shown in FIG. 9, and the both electrode patterns 53 and 55 and the pressure-sensitive resistive film 65 may be separated by a spacer or the like.

Although various embodiments of the present invention have been described in detail above, the present invention is not limited to these embodiments, and various modifications as described below are possible, for example.

In each of the above embodiments, a flexible substrate is used as a substrate. However, the present invention is not limited to this, and a rigid substrate may be used as necessary.

In each of the above embodiments, silver paste was used as the electrode pattern. However, silver paste was laminated in multiple layers, silver paste was further formed in multiple layers such as a carbon film, and copper foil etching was performed. Other various configurations such as those according to the above can be used.

Similarly, various other structures such as a multi-layered pressure-sensitive resistive film or a material using a material other than the materials shown in the above embodiment can be used.

[0070]

As described in detail above, the present invention has the following excellent effects. The pressure-sensitive resistive film and another layer (including another pressure-sensitive resistive film) to be formed on the pressure-sensitive resistive film are separately provided on separate substrates (including a case where both substrates are one substrate). Since they are formed in contact with each other, or they are overlapped so as to face each other with a predetermined separation, in the non-pressed state, the resistance value between the two electrode patterns can be kept large and the off state can be reliably maintained, In the pressed state, it is possible to turn on both electrode patterns with high sensitivity.

Since there is no need to provide a closed space 133 as shown in FIG. 11 in the switch portion, there is no need to provide a hole for air escape, and it is possible to easily achieve a completely waterproof structure and to take measures against dust. It will be easier.

Since the two electrode patterns or the electrode pattern and the conductor pattern abut or approach each other with the pressure-sensitive resistive film interposed therebetween, the thickness can be reduced.

Even if the substrate is pressed to turn on the switch, the substrate does not bend (or hardly bend), so that its durability is improved. Further, since the pressed substrate does not bend (or hardly bends), even if the substrate is further thinned, there is no problem in strength, and the thickness can be further reduced.

Since the two substrates can be manufactured simply by superimposing printed electrode patterns and pressure-sensitive resistive films on the two substrates, the manufacturing process is simplified, and the manufacturing cost can be reduced.

It is possible to freely change the pressing force at the time of ON by allocating the carbon or the insulating filler.

[Brief description of the drawings]

FIGS. 1A and 1B are diagrams showing a membrane switch according to a first embodiment of the present invention, wherein FIG. 1A is a plan view of a main part, and FIG.

FIG. 2 is a diagram showing a method of manufacturing the membrane switch shown in FIG.

FIG. 3 is a side sectional view of a main part of a membrane switch according to a second embodiment of the present invention.

FIG. 4 is a diagram showing a method of manufacturing the membrane switch shown in FIG.

5A and 5B are diagrams showing a membrane type switch according to a third embodiment of the present invention, wherein FIG. 5A is a plan view of a main part, FIG. 5B is a sectional side view of a main part, and FIG. FIG.

6 is a diagram illustrating a method of manufacturing the membrane switch illustrated in FIG.

FIG. 7 is a side sectional view of a main part of a membrane switch according to a fourth embodiment of the present invention.

8 is a diagram showing a method of manufacturing the membrane switch shown in FIG.

FIG. 9 is a side sectional view of a main part of a membrane switch according to a fifth embodiment of the present invention.

FIG. 10 is a view illustrating a method of manufacturing the membrane switch illustrated in FIG. 9;

FIG. 11 is a side sectional view of a main part of a membrane switch according to a sixth embodiment of the present invention.

FIG. 12 is a side sectional view of a main part of a membrane switch according to a seventh embodiment of the present invention.

FIG. 13 is a side sectional view of a main part of a conventional membrane switch.

FIG. 14 is a side sectional view of a main part of a conventional membrane switch.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 First base material 11 Flexible substrate 13 Electrode pattern 15 Pressure-sensitive resistive film 20 Second base material 21 Flexible substrate 23 Electrode pattern 30 First base material 40 Second base material 15-1 Pressure-sensitive resistive film 15- 2 pressure-sensitive resistive film 50 first substrate 51 flexible substrate 53, 55 electrode pattern 57 pressure-sensitive resistive film 60 second substrate 61 flexible substrate 63 conductor pattern 57-1 pressure-sensitive resistive film 57-2 pressure-sensitive resistive film 65 Pressure-sensitive resistive film

Claims (6)

[Claims] A first substrate having an electrode pattern formed on a substrate and a pressure-sensitive resistive film formed thereon, and an electrode pattern formed on the substrate, or A second substrate formed with a pressure-sensitive resistive film on a pattern, comprising a pressure-sensitive resistive film formed on the first substrate, and an electrode pattern formed on the second substrate or A membrane-type switch, wherein the first base material and the second base material are overlapped so that a pressure-sensitive resistive film further formed on an electrode pattern is brought into contact. 2. A first base material comprising a plurality of electrode patterns formed close to each other on a substrate, and a pressure-sensitive resistive film formed on the plurality of electrode patterns so as to cover the plurality of electrode patterns; Either a conductor pattern is formed, or further comprising a second substrate formed by forming a pressure-sensitive resistance film on the conductive pattern, a pressure-sensitive resistance film formed on the first substrate, The first base material and the second base material are overlapped so that the conductive pattern formed on the second base material or the pressure-sensitive resistance film further formed on the conductive pattern is brought into contact with the conductive pattern. Membrane switch. 3. A first base material formed by forming a plurality of electrode patterns close to each other on a substrate, and a first base material formed by forming a conductor pattern on the substrate and further forming a pressure-sensitive resistive film thereon. Comprising a second substrate, a plurality of electrode patterns formed on the first substrate and the first substrate so as to contact the pressure-sensitive resistance film formed on the second substrate and the second substrate A membrane-type switch comprising two superposed substrates. 4. An electrode pattern formed on a substrate, and a first base material having a pressure-sensitive resistive film formed thereon, and an electrode pattern formed on the substrate, or further comprising: A second substrate formed with a pressure-sensitive resistive film on a pattern, comprising a pressure-sensitive resistive film formed on the first substrate, and an electrode pattern formed on the second substrate or A membrane-type switch, wherein the first base material and the second base material are overlapped with each other so as to face a pressure-sensitive resistive film further formed on an electrode pattern at a predetermined interval. 5. A first base material comprising: a plurality of electrode patterns formed close to each other on a substrate; and a pressure-sensitive resistive film formed on the plurality of electrode patterns to cover the plurality of electrode patterns; Either a conductor pattern is formed, or further comprising a second substrate formed by forming a pressure-sensitive resistance film on the conductive pattern, a pressure-sensitive resistance film formed on the first substrate, Laminating the first base material and the second base material in a state where the conductive pattern formed on the second base material or the pressure-sensitive resistive film further formed on the conductive pattern faces each other with a predetermined space therebetween. A membrane-type switch characterized by the following. 6. A first base formed by forming a plurality of electrode patterns close to each other on a substrate, and a first base formed by forming a conductor pattern on the substrate and further forming a pressure-sensitive resistive film thereon. A plurality of electrode patterns formed on the first base material and a pressure-sensitive resistive film formed on the second base material in a state where the first and second pressure-sensitive resistive films face each other with a predetermined distance therebetween. A membrane switch comprising a substrate and a second substrate superposed on each other.