JPH03129421A - Transparent switch - Google Patents

Abstract

PURPOSE:To obtain a transparent switch with high reliability for the result of a switching operation by providing a spacer formed by performing the exposure developing of a photosensitive agent and eliminating an unrequired part partially. CONSTITUTION:A micro dot spacer 25 is provided on a plane except for movable leads 23, 24 on a movable electrode 22. The spacer is the one in which the exposure developing of a photosensitive layer having photosensitivity provided on the electrode 22, for example, photoresist, a coating agent, a dry film, etc., is performed, and the unrequired part is eliminated, and is formed in spherical, cylindrical, or cubic shape with the maximum dimension of either the length, the width, and the height less than 50 mum, extending over an entire plane. Also, a micro dot spacer 31 similar as the micro dot spacer 25 is provided on the plane of a fixed electrode 28. In such a manner, since malfunction can be prevented from occurring by reducing a dead zone, the transparent electrode with high reliability can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention also relates to a transparent switch that opens and closes contacts.

[Prior art] Conventionally, as an example of a transparent switch, P. 17 of "Key Points of Input Device Development, Design, and Application" published by the Japan Institute of Technology
A transparent flat switch shown at 0 is known.

This transparent flat switch is constructed as shown in FIGS. 18 to 24. In each figure.

(1) is a transparent first insulating sheet that is easily displaced in the thickness direction due to stress, and (2) is a movable insulating sheet formed of a transparent conductive film and provided on one side of the first insulating sheet (1). electrodes; (3) is a first movable lead which is one signal extraction electrode of the movable electrode (2); (4) is a second movable lead which is the other signal extraction electrode of the movable electrode (2); (5) is a movable electrode sheet composed of the first insulating sheet (11), the E-moving electrode (2), and the first and second movable REETs (3) and (4); (7) 4: A fixed electrode formed of a conductive film and provided on one side of this second insulating sheet (6), (8) is a first fixed lead that is one signal extraction electrode of the pole (7), (9) is the fixed electrode (7) above.
the second fixed lead, the other signal receiver of which is an electrode;
(10) is a fixed electrode sheet composed of a second insulating sheet (6), a fixed electrode (7), and both of the above-mentioned pruritus leads (8) and (9).

(11) is an insulator 1 made of silicone, acrylic, epoxy, polyester, urethane resin, etc., and provided on a fixed electrode (7) with a diameter of 150 to 500 μm.
, shows an insulating dot spacer with a height of about 10% of the diameter.

Next, the operation will be explained. When the transparent flat switch configured as shown in FIG. 18 presses the first insulating sheet (1) with a finger or a writing instrument P such as a ballpoint pen as shown in FIG. The movable electrode (2) moves downward, and the movable electrode (2) and the fixed electrode (7) come into contact and become energized.

Next, when the external stress applied to the first insulating sheet 1 (1) decreases, the first insulating sheet (1), the movable electrode (2)
begins to return to its original state, and finally the movable electrode (2) and the fixed electrode (7) become non-conductive, and the first insulating sheet 1-
(11, The movable electrode (2) returns to its original state.

As described above, by applying or removing external stress to the first insulating sheet (1), both electrodes (2)
, (7) becomes conductive or non-conductive, and this state can be detected by an external circuit. Furthermore, since both electrodes (2) and (7) are configured to have a uniform resistance distribution, for example, as shown in Fig. 24, a transparent flat switch is connected to a constant current source S, and one movable lead is connected to the constant current source S. (
3) By finding the current ratio (X coordinate) flowing into the leads (8) and (4) and the current ratio (Y coordinate) flowing out from the fixed leads (8) and (9), and converting them from analog to digital.

The coordinates (x, y) of the pressed position are obtained from the following formula.

1=il+12==i3+i4 here.

a ・Dimension b between both movable leads (3), (41;
Body fixed lead (8), (Dimensions between 93; Total current 11; Inflow current from the first movable lead (3) 12; Inflow current i3 from the second movable lead (4); First fixed Outflow current i4 from lead (8); second movable lead (
Outflow current from 9) Note that even if the transparent flat switch is connected to a constant voltage source, the coordinates (X, Y) of the pressed position can be determined in the same way.

[Problems to be Solved by the Invention] As described above, in the conventional transparent switch, the insulating dot spacer (11) is present on the fixed electrode (7), so that on and near the insulating dot spacer (11) Both electrodes (2) and (7) cannot be connected, and dead band E (23rd
There was a problem that the following problem occurred.

As a countermeasure to eliminate the above-mentioned dead zone E, for example, if the shape of the insulating dot spacer (11) is made smaller, it will be improved a little, but even if the shape is made smaller, the current screen printing is only about φ1501tm at most, which is a fundamental problem. It cannot be a countermeasure.

Furthermore, if the coating film shown in Japanese Patent Publication No. 63-228539 is formed on one electrode, the dead zone E can be reduced. However, when actually created, the insulation resistance between the electrodes is several Ω and O
The transparent switch enters the N state and malfunctions. Moreover, number 1
There was a problem with the reliability of the switch function, as the switch turned on and off at a resistance of 0 to several 100 KΩ, resulting in an unstable state.

The present invention was made to solve the above-mentioned problems, and an object of the present invention is to obtain a transparent switch with high reliability in switch operation results.

[Means for Solving the Problems] In the invention of the present application cylinder 1, the photosensitive agent is fixed to at least one of the electrodes so as to form a contact and separation part between the electrodes, and the photosensitive agent is partially removed by exposure and development. A spacer made of a formed insulating member is provided.

In addition, in the invention of No. 9, the present invention is provided with a resistor whose conductivity has pressure-sensitive characteristics, and a spacer made of an insulating member fixed to the electrodes so as to form a contact and separation part between the electrodes. be.

Furthermore, in the invention of the second cylinder 3, the electrode is formed of an insulating member so as to be fixed to the fixed part of the first spacer and cooperate with the first spacer to form a contact/separation part between the electrodes. A second spacer is provided.

[Function] In the invention of the present cylinder 1, the transparent movable electrode and the fixed electrode having two elasticities are made of an insulating member formed by exposing and developing a photosensitive agent provided between the two electrodes and partially removing it. Insulation is maintained by the spacer, and by applying force to the movable electrode in the direction toward the fixed electrode, the two electrodes are electrically connected at the separation portion provided in the spacer.

In the invention of the present cylinder 2, the transparent movable electrode and the fixed electrode having 1 elasticity are kept insulated by a spacer made of a resistor and an insulating material provided between the two electrodes, and the fixed electrode is connected to the movable electrode. By applying force in the lateral direction, the resistor and the electrode come into contact, external pressure is applied to the resistor, and the resistor becomes conductive. Then, the two electrodes are electrically connected via this resistor.

In the invention of the present cylinder 3, a transparent movable electrode and a fixed electrode having two elasticities are provided between the two electrodes, and a first spacer and a first spacer fixed to a fixed part provided on the first spacer are provided. Insulation is maintained by the second spacer, and by applying force to the movable electrode in the direction toward the fixed electrode, both electrodes are separated at the separation part provided by the first spacer and the second spacer. are electrically connected.

[Example 7] Hereinafter, a first example of the present invention will be described in detail with reference to FIGS. 1 to 5.

In this embodiment, a first insulating sheet (21) made of, for example, plastic film glass is provided, and this first insulating sheet (21) is formed so as to be easily changed in the thickness direction by stress. ing. Other materials for the first insulating sheet (21) include glass, polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, polycarbonate, and polyether sulfone.

There are also polysulfone, epoxy, acrylic, etc. A movable electrode (22) made of a transparent conductive film is provided on one side (21a) of the insulating sheet (21). Movable electrode (
22) has a surface resistance value of 10 to 10'Ω/cm".

Materials with visible light transmittance of 30% or more, such as gold, nickel,
It is made of palladium, chromium, tin oxide, indium oxide, tin, iodide, etc. Note that the surface resistance value and visible light transmittance vary depending on temperature conditions. At the left end of this movable electrode (22) is a first movable lead (23) as a signal extraction electrode, and at the right end is a movable lead (23).
) are provided with second movable leads (24) facing each other. The second movable lead (24) is made of a conductive material such as gold, silver, silver carbon, carbon, copper, silver-copper, nickel, tin, solder, or aluminum. Also.

Both movable leads (23), (24) on the movable electrode (22)
) is provided with a microdot spacer A (251), which is a spacer made of a photosensitive agent. etc. are exposed and developed. Other coating agents can also be considered as the photosensitive layer. Then, unnecessary parts are removed to form a sphere, nine cylinders, each having a maximum dimension of 10 μm or less in length, width, or height. It has the shape of a cube, etc., and exists over the entire surface, and Figure 3 (b) shows an enlarged view of part A in Figure 3 (a). Dimensions 50
The reliability of the function is further improved by having a sphere, a cylinder, a cube, a rectangular parallelepiped, a cone, etc. each having a size of 1 μm or less over the entire surface.

Then, the insulating sheet (21) shown in Fig. 1 above, the movable electrode (
22), movable leads (23), (24), and microdot spacers A (25) form a movable electrode sheet (26).

On the other hand, (27) is a second insulating sheet corresponding to the first insulating sheet (21) and is made of the same material as the first insulating sheet (21).

A fixed electrode (28) made of a transparent conductive film is provided on one side (27a) of the insulating sheet (27).

The fixed electrode (28) is made of the same material as the movable electrode (22), and the left end of this fixed electrode (28) has a first fixed lead (29) as a signal extraction electrode, and the right end has a first fixed lead (29).
The second fixed lead (3) facing the fixed lead (29)
0) are provided respectively. Regarding the material of the second fixed lead, the material of the first movable lead (22) and the second
This is similar to the movable lead (23).

In addition, the fixed lead (29) of the fixed electrode (28), (3
Microdot spacer A (2
A microdot spacer B (31) similar to 5) is provided.

Then, the second insulating sheet (27), the fixed electrode (2
8), fixed leads (29), (30), and microdot spacer B (31) to fix the fixed electrode seat 1- (32).
) is formed.

Next, the operation will be explained.

The insulation resistance between the electrodes of one transparent switch made with this configuration was, for example, IMΩ or more at an IOV applied voltage. When external pressure from the writing instrument P in FIG. 1 is applied to the first insulating sheet (21), the microdot spacers A-B
(25), given by (31), the − side is 1
The first insulating sheet (21) is displaced through a microgap shaped into a cube of 0 μm, and the picture electrodes (22) and (
28) Comrades come into contact and eventually reach a stable value. Note that the value at this time is one for both electrodes (22).

Although it goes without saying that the surface resistance value of the transparent conductive film constituting (28) and the lead resistance value constituting the signal extraction electrode vary, it is usually 2 to 3 Ω or less. The conduction state can be defined by detecting the stable resistance value between the picture electrodes (22) and (281).

Microdot spacer A-B f25), (31
1 is a conventional insulated dot spacer (11) (φ150μ
9. For example, 4 to 5 pieces/mm.
It is fully capable of handling high resolution.

In other words, the dead zone can be made sufficiently smaller than φ200 μm. Therefore, accurate information that follows handwriting can be output.

Also, when the external stress decreases, the two electrodes (22).

(28) The contact between the comrades ends, and finally 1 (1
A gap of 4 m is maintained and a non-conducting state is established.

In this embodiment, the pitch of the microdot spacers can be set freely, so areas (areas with different operating stress) can be freely provided within the same plane to suit the purpose, such as a pen-containing canillary or a finger touch area. In addition, since the area can be increased, it is possible to provide inexpensive and highly reliable transparent switches.In addition, microdot spacers (2
5) is provided only on one electrode, and can provide the effect of a spacer for electrically insulating between both electrodes.

Furthermore, in this embodiment, a photosensitive layer is provided on the electrode, which is exposed and developed, unnecessary portions are removed, and the remaining portion is used as a spacer, so that the dead zone can be made sufficiently small.

Next, a second embodiment of the present invention will be described in detail with reference to FIGS. 6 to 10. Note that the same reference numerals as in the above-mentioned embodiments indicate the same members.

In this practical example, both movable leads (2
A thin film (33), which is a resistor made by printing transparent conductive paint, is provided on the surfaces other than 3) and (24). The material of these movable leads is silver, and the resistance value is l.
The thin film (33) made of o-4 to 10Ω is used to protect the movable electrode (22), and the transparent conductive paint is a metal-based or metal oxide-based conductive material similar to that of the movable electrode (22). In addition to containing particles, the binder is made of polyester, acrylic, or epoxy resin with excellent abrasion resistance, has a surface resistance of 103 to 1010 Ω/cm2, and has a uniform thickness (for example, about 10 μm). ) printed on the movable electrode (22). The above surface resistance values are based on commercially available resistance materials. Further, the binder may be an epoxy resin.

Then, the first insulating sheet (21), the movable electrode (2
2), Movable lead (23), (24), Thin film (33)
A movable electrode sheet (26) is formed.

Further, as shown in FIGS. 9 and 10, a fixed electrode (28) formed of a transparent conductive film is provided on one side (27a) of the second insulating sheet (27). Fixed electrode (2
8), a first fixed lead (29) as a signal extraction electrode is provided at the left end, and a second fixed lead (30) opposite to the first fixed lead (29) is provided at the right end.

In addition, the fixed lead (29) of the fixed electrode (28), (3
Microdot spacers (31), which are spacers in the shape of a sphere, a cylinder, a cube, a rectangular parallelepiped, and a cone, each having a maximum dimension of 10 μm or less in length, width, or height, are placed on the surfaces other than 0). is provided. This is formed by exposing and developing a photosensitive layer 2 such as a photoresist, coating agent, dry film, etc. provided on the electrode, and removing unnecessary portions. In addition, spheres, cylinders, cubes, etc. whose maximum dimensions in length, width, and height are 50 μm or less
If the microdot spacer (31) in the shape of a rectangular parallelepiped or one cone is present over the entire surface, the reliability of the switch function is further improved.

Then, the second insulating sheet [27], the fixed electrode (28
), fixed leads (29), (30), and microdot spacers (31) form a fixed electrode sheet (32).

Next, the operation will be explained.

With this configuration, the external pressure indicated by P in FIG.
When it is added to the insulating sheet (21), it is passed through a microgap that forms a cube with one side of 104 m provided by the microdots (31) on the fixed side.

The movable side is displaced, and first the two electrodes (2) are connected through the thin film (33).
2), (28) come into contact. However, in this state, the contact resistance due to the thin film (33) is large, so it is still in a non-conductive state. If further pressure is applied from this state.

The resistance Re between the two electrodes was several tens of MΩ or more in the non-pressurized state.
(Fig. 11) begins to decrease as shown in Fig. 12, and finally reaches a stable value. Note that, as mentioned above, the value at this time is usually less than 9Ω or less than 2 to 3Ω. By adding this stable resistance between both electrodes and making them function as spacers, both electrodes (22), (2
8) A pressure-sensitive property can be provided between the electrodes, and this pressure-sensitive property appears in the same way at any part of the electrode.

On the other hand, when the external stress decreases, the contact resistance increases,
Then, it becomes a steady-state microgap and becomes non-conductive.

In addition, since a thin film (33) as a protective layer with excellent wear resistance is printed on the entire surface of the movable electrode (22), it is possible to prevent deterioration of the resistance distribution due to scratches, etc. The uniformity of the resistance distribution between the two can be maintained. Therefore, accurate information that follows the handwriting is output.

In this embodiment, the material of the thin film (33) is a resistor having a surface resistance value of 10 3 to 10 10 Ω/Cm 2 + a film thickness of 10 μm. Since the thin film (33) is made of the above-mentioned material, by increasing the pressing force applied to the movable electrode sheet (26), the movable electrode (22)
) and the fixed electrode (28).
As the area of contact with the electrodes increases, the resistance Re due to the thin film (33) provided between the two electrodes decreases.

Next, the volume resistivity is 10'Ω・cm or more and the film thickness is 1 μm.
A case where the following resistive film is used as the thin film (33) of this example will be briefly explained. First, a voltage of 5μ or more is applied between the two electrodes. Then, the resistance Re between the nine electrodes is changed by the tunnel shot effect. Based on this change, the switch is turned on and off.

Further, in this example, by using the thin film (33) which is a resistive film made of the material described above, a certain degree of effect as a spacer function was obtained. However, the surface of the thin film (33) facing the fixed electrode (28) is made uneven. The maximum film thickness difference between the concave and convex parts of the uneven state is 1
It should be less than μm. By making the surface of the thin film (33) uneven in this way, the fixed electrode (28) and the thin film (
33), stable and high insulation can be obtained, so the function as a spacer can be further improved.

Next, a third embodiment of the present invention will be described in detail with reference to FIGS. 13 to 17. Note that the same reference numerals as in the above-mentioned embodiments indicate the same members. In this embodiment, FIG.
As shown in FIG. 15, a transparent resistance layer A (100a), which is a first spacer, is provided on the surface of the movable electrode (22) excluding both movable leads (23) and (24). This resistance layer A (Iota) has a surface resistance of 103~1O''Ω
/cm", and a concave and convex portion serving as a fixing part is provided in the part where the second spacer, the microdot spacer A (25), is provided. The difference in height between the concave and convex portions is 10 μm. The difference in height between the concave and convex portions should be 10 μm or less.The microdot spacer A (25) is connected to the resistive layer A.
(100a) will be briefly explained.

First, a photosensitive layer is provided on the resistance layer A (100a).

The photosensitive layer provided on the resistive layer A (1ooa) is 2, for example a resist, a coating agent, or a dry film.

Next, exposure and development is carried out, unnecessary parts are removed, and the shape is made into a sphere, one cylinder, a cube, a rectangular parallelepiped, one cone, etc., each of which has a maximum dimension of 50 μm or less in length, width, height, etc. It is something. FIG. 15(b) is a diagram showing the uneven portion. As shown in FIG. 15(b), the microdot spacer A (25) has a convex portion (A) of the resistance layer (100a), a convex portion (B) adjacent to this convex portion (A),
It is exposed and developed so as to be fixed in the convex part (A) and the concave part CC) between the convex part (B). Further, the resistive layer (100a) is exposed and developed with the distance between the microdot spacers set to a distance of a. By exposing and developing in this way, microdot spacers A (
The contact surface where 25) contacts the resistance layer A (1ooa) becomes wider. Note that since the resistance layer (100a) has the above-mentioned pressure-sensitive characteristics (shown in FIG. 12), the resistance layer A
The difference in height between the concave and convex portions of the concavo-convex portion (100a) is 10 μm or less. Further, the pitch between the convex portions (A) and the convex portions (B) of the uneven portion of the resistive layer A (100a) is determined by the size of one dot of the microdot spacer (25). As shown in FIG. 13, the first insulating sheet (21
), movable electrode (22), movable lead (23), (24
), a resistance layer A (100a), and a microdot spacer A (251) form a movable electrode sheet (26).

On the other hand, as shown in FIGS. 16 and 17, (27) is a second insulating sheet corresponding to the first insulating sheet (21), and is made of the same material as the first insulating sheet (21). has been done.

A fixed electrode (28) made of a transparent conductive film is provided on one side of the insulating sheet (27). Fixed electrode (2
8) is formed of the same material as the movable electrode (22),
A first fixed lead (29) as a signal extraction electrode is provided at the left end of this fixed electrode (28), and a second fixed lead (30) opposite to the first fixed lead (29) is provided at the right end. ing. In terms of material, it is the first. This is similar to the second movable leads (22) and (23).

In addition, the fixed lead (29) of the fixed electrode (28), (3
A resistive layer B (100b) similar to the resistive layer A (1ooa) is provided on the surface other than the resistive layer B (100b). Furthermore, a microdot spacer B (31) similar to the microdot spacer A (25) is fixed to the uneven surface of the resistance layer B (100b).

Then, the second insulating sheet [27], the fixed electrode (28
), fixed leads (29), (30), resistance layer B
(100b) A fixed electrode sheet (32) is formed of microdot spacers B (31,).

Next, the operation will be explained. Writing instrument P as shown in Figure 13
When an external force is applied to the first insulating sheet (21), the first insulating sheet (2()) is displaced and the movable electrode (22
) The resistance layer A (100a) on which the microdot spacer A (25) of the fixed electrode (28) is not provided contacts the resistance layer B (loob) on which the microdot spacer B (31) of the fixed electrode (28) is not provided. . Both resistance layers (1
Since the conductivity of oOa) and (1oOb) has pressure-sensitive characteristics, a certain amount of force is applied to the first insulating sheet (21
) to the contact portion with both resistance layers (100a) and (loOb), conduction occurs between the two resistance layers, and the nine electrodes (22) and (28) are electrically connected, The resistance value becomes stable. The stable resistance value at this time is mainly the surface resistance value of the transparent conductive film that constitutes both electrodes (22) and (28).

It goes without saying that the resistance value varies depending on the resistance value of the leads constituting the signal extraction electrode, but it is usually less than 2 to 3 ohms.

By detecting the stable resistance value between both electrodes (22) and (28), the conduction state can be defined.

Moreover, when the external stress decreases, the resistance film A-B.

(LOOa), both electrodes (22) via (100b)
, (28), and finally a gap of, for example, 10 μm is maintained by the microdot spacers A and B (25) and (31), resulting in a non-conductive state.

In this example, between the two electrodes (22) and (28), there are resistance layers A-B (100a) whose surfaces are textured.
100b), a pressure-sensitive property (a property in which the contact resistance changes depending on the pressing force) is obtained also in this part, which has the effect of improving the insulation between the electrodes (22) and (28). Moreover, transparent resistance layers A and B with excellent wear resistance
(100a), (loob) are provided on the entire surface of the electrodes (22), (28) made of thin films of several thousand pieces or less, so that a protective effect is also generated.

In the above example, the switch configuration was explained using an analog type (uniform electrodes on the entire surface), but it is also possible to use a digital type (patterned electrodes), a digital/analog type (input part digital, detection part analog), or even this combination. It is.

Further, as a fourth embodiment, the surface of the movable electrode (22) on the fixed electrode (28) side is coated with the resistance layer A (Io
microdot spacers A (25) are fixed to the uneven portions of the resistance layer A (loOa). In this way, the surface of the movable electrode (22) on the fixed electrode (28) side is provided so that two parts, the microdot spacer A (25) part and the resistance part of the resistance layer A (100a), are exposed. . On the other hand, the movable electrode (28) of the fixed electrode (28)
Regarding the surface on the 2) side, no resistance layer is provided on the surface portion of the fixed electrode (28) that faces the resistance portion exposed on the surface of the movable electrode (22). The surface portion of the fixed electrode (28) facing the microdot spacer A (25) exposed on the surface of the movable electrode (22) is covered with a resistive layer B [10
0b) is provided, and a microdot spacer B (31) is fixed to the uneven portion of the resistance layer B (100b). When the facing surfaces of the movable electrode (22) and the fixed electrode (28) are formed as described above, the electrical contact portion between the nine electrodes (22) and (28) is formed between the resistive layer A (100a) and the fixed electrode (28). It makes contact with the electrode section.

Next, the operation will be briefly explained. When an external force in the direction of the fixed electrode is applied to the insulating sheet, the resistance layer A (LOOA) and the electrode portion of the fixed electrode (28) come into contact. and resistance layer A
(Since external pressure is applied to 100al, resistance layer A (loooa
), the conductivity changes due to the pressure-sensitive characteristics described above, and the two electrodes (22) and (28) are electrically connected. When the external force decreases, the resistance layer A (iota) loses its conductivity due to its pressure-sensitive characteristics, and a gap is created between the resistance layer A (loOa) and the electrode portion of the fixed electrode (28).

Both electrodes (22) and (28) are insulated, and the fifth
The movable electrode (22) of the fourth embodiment described above as an embodiment of
The resistance layer A (1
00a), microdot spacer A (25
) is fixed, leaving the uneven resistance layer A (LOOA), and removing all other parts of the resistance layer A (100a) to expose the fixed electrode (28). When the opposing surfaces of the movable electrode (22) and the fixed electrode (28) are formed as described above, one electrode (22), (2
The electrical contact part 8) is between both types of pole parts. Next, the operation will be briefly explained. When an external force in the direction of the fixed electrode is applied to the insulating sheet, both 9 electrode parts come into contact with each other, resulting in 9 electrodes (22)
, (28) are electrically connected. When the external force decreases, the elastic force of the movable electrode (22) causes both electrodes (22) to
, (28) is separated and the electrical connection between the two electrodes is broken.

In the third, fourth, and fifth embodiments of the present invention, when an uneven resistance layer is applied to the surface of the electrode sheet and the spacer contacts the applied resistance layer, The contact area has become wider. Therefore, the adhesion between the spacer and the resistance layer is increased, and the spacer can be prevented from falling off, thereby improving the strength of the switch.

In the first to fifth embodiments of the present invention, even if the mounting density of the switches is increased, coordinate data that follows handwriting can be obtained without interruption.

In the third to fifth embodiments, when fixing the microdot spacer to the resistance layer, the surface of the resistance layer is formed into an uneven shape as the fixing part. The shape of the fixing portion is not necessarily limited to unevenness, as long as it can be firmly fixed to the dot spacer by mechanical or chemical means.

Furthermore, in the third to fifth embodiments, the microdot spacer can be securely fixed to the electrode portion without any special processing on the electrode itself, and the original function of the electrode is not impaired in any way.

[Effects of the Invention] As described above, since the transparent switch according to the present invention has the above configuration, malfunction of the switch can be prevented and reliability can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view showing a first embodiment of the present invention, and FIG. 2 is a plan view of the movable electrode sheet of FIG. 1. Figure 3(a) is a sectional view taken along the line Ill-III in Figure 2, Figure 3(b) is a partially enlarged view of section (A) in Figure 3(a), and Figure 4 is a cross-sectional view of part (A) in Figure 1. Plan view of fixed electrode sheet, Figure 5 (
a) is a cross-sectional view taken along the line V-V in FIG. 4, FIG. 5(b) is a partially enlarged view of section CB) in FIG. 5(a), and FIG. 6 shows a second embodiment of the present invention. 7 is a plan view of the movable electrode sheet in FIG. 6, FIG. 8 is a sectional view taken along the line ■-■ in FIG. 7, and FIG. 9 is a plan view of the fixed electrode sheet in FIG. 6. 10th
Figure (a) is a sectional view along the line X-X in Figure 9, and Figure 10 (b)
) is a partially enlarged view of part A1 in Figure 10(a), Figure 11 is an equivalent circuit diagram of the =b switch (transparent≠-1), Figure 12 is a characteristic diagram showing changes in contact resistance, Figure 13 14 is a plan view of the movable electrode sheet of FIG. 13, FIG. 15(a) is a sectional view of the sleeve-axis arrow line of FIG. 14, and FIG. Figure (b) is (A) in Figure 15 (a).
), FIG. 16 is a plan view of the fixed electrode sheet in FIG. 13, and FIG. 17(a) is the XV II in FIG. 16.
-XV II A sectional view along the arrow line, FIG. 17(b) is a partially enlarged view of the part (B) in FIG. 17(a), FIG. 20 is a cross-sectional view taken along the arrow line ■-■ in FIG. 19, FIG. 21 is a plan view of the fixed electrode sheet in FIG. 18, and FIG. 22 is a Cross-sectional view along the X arrow line, No. 23
The figure is an explanatory diagram of the operation. FIG. 24 is an equivalent circuit diagram of a flat switch. In the figure, (22) is a movable electrode, (25)・(
31) is a microdot spacer A-B, and (28) is a fixed electrode. (33) is a thin film, (100a), (100b)
are the resistance layers A and B. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (3)

[Claims] (1) A transparent fixed electrode, a transparent movable electrode having elasticity, fixed to at least one of the electrodes so as to form a separation part between the electrodes, and a photosensitive agent is partially exposed and developed. A transparent switch comprising: a spacer made of an insulating member formed by removing the spacer. (2) a transparent fixed electrode, a transparent movable electrode having elasticity, a resistor fixed to at least one of the electrodes so as to be located between the electrodes, and whose conductivity exhibits pressure-sensitive characteristics; 1. A transparent switch comprising: a spacer made of an insulating member fixed to the other electrode so as to form a contact/separation portion with the other electrode. (3) a transparent fixed electrode, a transparent movable electrode with elasticity, a first spacer fixed to at least one electrode and provided with a fixing part on the other electrode side, and fixed to the fixing part and a second spacer formed of an insulating material so as to cooperate with the first spacer to form a contact/separation portion between the electrodes.