JP2001350575A - Plane input panel and its resistance body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To actualize a plane input panel which has smooth resistance films on its surface and is of high quality and easily manufactured, and its manufacturing method. SOLUTION: The plane input panel 1 having a touch operation surface is provided with a U-shaped insulating film 11 which has a 1st face 32 including a 1st opening 21 and having an X-directional electrode couple 12 on its surface and ?formed at a rim of the opening 21 and a 2nd face 33 including a 2nd opening 22 and having a Y-directional electrode couple 13 on its surface and formed at a rim of the opening 22, and is formed by closely contacting the rear surface of the 1st and 2nd faces 32 and 33 with each other in a manner that the 1st opening 21 is matched with the 2nd opening 22 and that the contacted and matched openings 21 and 22 are made to correspond to the touch operation surface, and further provided with film-like resistance bodies 15 and 16 which are spread across the U-shaped insulating film.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a flat input panel having a touch operation surface for input to a processing device such as a computer, and a resistor for the flat input panel.

[0002]

2. Description of the Related Art A flat input panel is used as one of input devices for a processing device such as a computer. The flat input panel includes an input panel (a flat input pad and a flat input mouse) whose operation panel surface is transparent or opaque, and a user presses down or touches the operation panel surface of the flat input panel with a finger or a pen. Allows input to the computer.

One of the methods for sensing pressing or contact in a flat input panel is to use a resistor generally called a resistive film. The resistive film contact type flat input panel includes a first resistive film provided below the operation panel surface,
A second resistive film provided at a predetermined gap from the first resistive film, and two sets of electrodes provided on the two resistive films so as to form voltages in directions orthogonal to each other, respectively. With a pair. A film, glass, or the like is used as a base member that supports the resistance film. When the operation panel surface of the flat input panel is pressed with a finger or the like, the operation panel surface and the resistive film are bent, and a repulsive force is generated. The repulsive force is substantially proportional to a stroke generated by pressing a finger, and the longer the stroke, the greater the repulsive force. When the finger is released, the gap between the resistive films returns to the normal state due to the elastic force of the resistive films and the base member.

When performing an input operation using such a flat input panel, the user presses down on the operation panel surface until two resistive films come into contact and short-circuits. When a short circuit occurs between the two resistive films, the respective voltages formed so that the two pairs of electrodes are orthogonal to each other also change. Each voltage is read to generate a coordinate input signal, which is input to a computer.

[0005] As a conventional method of manufacturing a flat input panel, a multilayer input screen is printed on a film surface on which a resistive film is formed, and then electrodes and circuits are printed on the insulating layer. There are a method of stamping out a shape, a method of partially etching a resistive film, printing electrodes and circuits on this insulating layer, and stamping out a desired shape. Generally, this resistance film is
Conductive powder such as silver, copper or carbon and polyester,
It is produced by blending urethane or vinyl chloride-vinyl acetate copolymer to form a paste, and screen-printing this paste on a substrate in a predetermined shape.

[0006]

A method of using a screen printing of an insulating paste to form an insulating layer in the manufacture of a flat input panel of a resistive film contact type is based on pinholes, insufficient drying, uncured, or printed insulating paste. Defects such as a decrease in film thickness due to inconvenience are likely to occur, and as a result, there is a problem that a short circuit or silver migration occurs between the electric circuit and the resistive film by the silver paste. In addition, a method of using etching to form an insulating layer is complicated because it requires a plurality of steps such as etching mask printing, drying, etching, mask peeling, washing, and drying.

[0007] The resistance film for a conventional resistance film contact type flat input panel is generated by screen-printing a carbon paste in a predetermined shape on a substrate, for example. , Due to clumping of carbon particles in the paste, mesh marks due to the screen mask or uneven screen printing, etc.
Unnecessary protrusions and uneven portions are likely to occur on the surface of the resistive film.

As a result, a predetermined gap required in normal times cannot be maintained between the resistive films, and there is a problem that the input load is reduced. In other words, even if the user does not intend to operate the flat input panel, even if the operator touches the operation panel surface a little, a short circuit occurs between the resistive films, which may cause a malfunction. Further, when the protrusion is particularly large, a short circuit may occur between the resistive films even in a normal state.

SUMMARY OF THE INVENTION Accordingly, it is a first object of the present invention to provide a high quality and easy-to-manufacture flat input panel and a method of manufacturing the same, which suppress the defects particularly related to the insulating layer in view of the above problems. A second object of the present invention is to provide a high-quality resistor for a flat input panel that is smooth without projections or unnecessary unevenness and has no variation in input load, in view of the above-mentioned problems.

A third object of the present invention is to solve the above problems,
An object of the present invention is to provide a flat input panel including a high-quality resistor that is smooth without any protrusions or unnecessary unevenness and has no variation in input load.

[0011]

According to a first aspect of the present invention, a flat input panel having an input touch operation surface has a first opening formed therein. A surface having an X-direction electrode pair on the surface, wherein the X-direction electrode pair has a first surface formed on the periphery of the first opening, a second opening formed, and a Y-direction electrode pair on the surface. A pair of Y-direction electrode pairs, the second surface formed on the periphery of the second opening, and the back surfaces of the first surface and the second surface such that the first opening and the second opening coincide with each other. A first opening and a second opening, which are in close contact and coincide with each other, are a U-shaped insulating film corresponding to the touch operation surface, and a film formed by stretching the U-shaped insulating film sandwiched therebetween. And a resistor.

According to a second aspect of the present invention, a resistor for a flat input panel having an input touch operation surface has an electrode pair formed on a surface thereof and has a predetermined shape. The two conductive films cut to size are 2
One electrode pair has a first surface and a second surface adhered to the surface so as to be an X-direction electrode pair and a Y-direction electrode pair, respectively.

According to a third aspect of the present invention, there is provided a flat input panel having an input touch operation surface, wherein an electrode pair is formed on a surface of the flat input panel, and the flat input panel is formed in a predetermined size in advance. The two extracted conductive films have a first surface and a second surface adhered to the surface such that the two electrode pairs become the X-direction electrode pair and the Y-direction electrode pair, respectively, and each surface is a predetermined surface. A resistor formed by bending a first surface and a second surface so as to face each other with a gap between the first surface and the second surface;
An insulator provided between the X-direction electrode pair and the Y-direction electrode pair provided on each of the surfaces.

According to the first aspect, an output wiring for electrically connecting each electrode pair to an external circuit is provided on the insulating film,
A U-shaped insulating film is formed by bending the insulating film on which each electrode pair is formed with the surface facing outside, and forming a U-shaped insulating film.
Since the flat input panel is constructed by sandwiching both sides of the letter-shaped insulating film between the film-shaped resistive films, it is easy to manufacture and strong insulation can be obtained between each pair of electrodes, especially defect defects related to the insulating layer. Thus, it is possible to provide a flat input panel that is high quality and easy to manufacture, with reduced noise.

According to the second invention, the conductive film is
Since the metal oxide is formed on the insulating film by vapor deposition or sputtering, contamination of foreign substances can be prevented, and the electrode pair is printed on the conductive film thus formed, and then cut into a predetermined shape. Therefore, it is possible to provide a high-quality resistor for a flat input panel that is smooth without protrusions or unnecessary unevenness and has no variation in input load.

According to the third aspect of the present invention, the flat panel panel is formed by using the resistor for the flat input panel according to the second aspect of the present invention. It is possible to provide a flat input panel provided with a high-quality resistor that is smooth and has no variation in input load.

[0017]

FIG. 1 is a sectional view of a flat input panel according to a first embodiment of the present invention, and FIG.
FIG. 3 is a top view of an insulating film according to the example of FIG. The flat input panel 1 according to the present embodiment includes an insulating film 11, an X-direction electrode pair 12, a Y-direction electrode pair 13, an anisotropic conductive film 14, a first film-shaped resistive film 15, and a second And a film-shaped resistance film 16.

As shown in FIG. 2, the insulating film 11 has a first surface 32 where the first opening 21 is formed and a second surface 22 where the first opening 21 is formed.
Is formed in a so-called eyeglass frame shape including a second surface 33 on which a pair of X-direction electrode pairs 12 and Y-direction electrode pairs 13 described later are provided on the surface. When the back surface of the first surface 32 and the back surface of the second surface 33 of the insulating film 11 are bent near the dashed line of the bent portion 34 so as to be in close contact with each other, that is, the X-direction electrode pair 12 and the Y-direction electrode pair 13 are provided. The first opening 21 and the second opening 22 coincide with each other when folded so that the surface to be set is on the outside. The folded and matched openings 21 and 22 correspond to the operation panel surface (not shown) of the flat input panel. That is, when the user presses the operation panel surface with, for example, a finger, a first film-shaped resistive film 15 described below provided below the operation panel surface is pressed, and at this time, the first film-like resistance film 15 penetrates the openings 21 and 22. Resistive film 1
5 and the second film-like resistance film 16 are short-circuited.

According to the present embodiment, the insulating film 11 is made of polyethylene terephthalate (PET), but may be another film as long as it is an insulating material, for example, a film of polyester, urethane or polyethylene naphthalate (PEN). It may be. The thickness of the insulating film 11 is, for example, 50 μm. Each electrode of the X-direction electrode pair 12 and the Y-direction electrode pair 13 is an insulating film 11
Of the first opening 21 and the second opening 22 on the same plane. The X-direction electrode pair 12 and the Y-direction electrode pair 13 are the X-direction electrode pair 12 and the Y-direction electrode pair 13.
The electric field formed by each of the first and second surfaces 32 and 33 of the insulating film 11 is orthogonal to each other when folded at the bent portion 34 so that the back surfaces of the first and second surfaces 32 and 33 are in close contact with the surface on which the is formed. Is provided. The X-direction electrode pair 12 and the Y-direction electrode pair 13 are printed with silver paste,
Its width is, for example, 1.5 to 2.0 mm.

Further, on the surface of the insulating film 11, an output wiring 23 for electrically connecting the four electrodes of the X-direction electrode pair 12 and the Y-direction electrode pair 13 to an external circuit is also provided. The output wiring 23 is for electrically wiring each electrode to a lead-out end 31 for connector connection with an external circuit (not shown), and is printed on the surface of the insulating film 11 with silver paste. Its width is, for example, 0.5-1.
0 mm. According to the present embodiment, the insulating film 11 has an eyeglass frame shape as shown in FIG.
The output wiring from the first surface 32 of FIG. 2 to the lead-out end 31 via the second surface 33 is also the second surface 33 and the first surface 32.
Since the structure can be formed simply by printing on the bent portion 34 that connects the two, the manufacturing is easy, and the output wiring penetrating through the insulating layer portion using the conductive adhesive, which is generally performed in the past, is unnecessary.

As described above, the X-direction electrode pair 12, Y
The glasses frame-shaped insulating film 11 provided with the direction electrode pair 13 and the output wiring 23 is provided with the X direction electrode pair 12, the Y direction electrode 13 pair and the output wiring 23 at a bent portion 34 shown in FIG. The first surface 32 and the second surface 33 are folded such that the first opening 21 and the second opening 22 coincide with the side of the surface on the outside, and FIG.
It becomes a U-shape as shown in FIG. By folding the insulating film 11 in this way, a strong insulating layer is formed between the X-direction electrode pair 12 and the Y-direction electrode pair 13. In the method of forming an insulating layer by using screen printing or etching over multiple layers as in the conventional example, the film thickness is easily reduced and short-circuiting and silver migration are likely to occur.In this embodiment, for example, a film made of polyethylene terephthalate is used. Since the insulating layer is formed by bending, reliable insulation can be easily obtained.

An anisotropic conductive film 14 for bonding the X-direction electrode pair 12 and the Y-direction electrode pair 13 to the film-shaped resistive films 15 and 16 to be described later is provided on the surfaces of the X-direction electrode pair and the Y-direction electrode pair. Next, the anisotropic conductive film 14 will be described. FIG. 3 is a diagram schematically showing an anisotropic conductive film.

In this embodiment, the film-like resistance films 15 and 16
And an anisotropic conductive film 14 used for bonding the X-direction electrode pair 12 and the Y-direction electrode pair 13, respectively.
In FIG. 1, the conductive material has conductivity only in the vertical direction.
6, which may be generally commercially available. Using this anisotropic conductive film 14,
As described later, the insulating film 11 and the film-shaped resistive film 1
Anisotropically conductive film 1 is obtained by thermocompression bonding 5 and 16
4 is formed, and the film-shaped resistive film 15 and the X-direction electrode pair 12 are electrically connected via the conductive material particles 36 as shown in FIG. 3B.

The first and second film-like resistive films 15 and 16 cover the entire anisotropic conductive film 14 on the side different from the side on which the insulating film 11 is adhered, that is, the insulating film 11 Each is stretched in such a way as to sandwich it. In this way, the first and second film-like resistive films 15 and 16 are formed using the anisotropic conductive film
The pair of direction electrodes and the pair of Y direction electrodes 12 and 13 are electrically connected and physically bonded, respectively.

The first and second film-like resistive films 15 and 16 are formed on an insulating film such as polyester, urethane, polyethylene terephthalate (PET) or polyethylene naphthalate (PEN) by, for example, ITO (indium tin oxide), oxide The conductive film is formed by depositing or sputtering metal oxide such as zinc or tin oxide or carbon. The formation of a resistive film by vapor deposition or sputtering can provide a smoother resistive film than the formation by screen printing, and requires fewer manufacturing steps than the formation by etching, which is very useful. In the first and second film-shaped resistive films 15 and 16 according to the present embodiment, for example, ITO 42 is sputtered on polyethylene terephthalate 41.

The output wiring 23 is for electrically wiring each electrode of the X-direction electrode pair 12 and the Y-direction electrode pair 13 to an external circuit. In the case of the resistive film contact type flat input panel, the resistive film should be short-circuited only when the operation panel is depressed, so that the output wiring 23 should not inadvertently contact each film-like resistive film. That is, it is necessary to reliably insulate the output wiring 23 from the first and second film-shaped resistive films 15 and 16. In the present embodiment, the output wiring 23 is formed on the same plane of the insulating film 11 together with the X-direction electrode pair 12 and the Y-direction electrode pair 13. And the Y-direction electrode pair 13. Therefore, for example, electrical insulation may be obtained by designing the insulating film 11 and the first and second film-shaped resistive films 15 and 16 to have a spatial margin. As an alternative example, an insulating material such as an insulating film may be further provided on the output wiring 23 to shield the output wiring 23.

FIG. 4 is a sectional view for explaining a case where the flat input panel according to the first embodiment of the present invention is pressed. As described above, as shown in FIG.
Frame 21 with the opening 21 and the second opening 22 are formed, and when the back surface of the first surface 32 and the back surface of the second surface 33 are folded together near the dashed line of the bent portion 34, The first opening 21 and the second opening 22 match. Folded matching openings 21 and 22
Corresponds to the operation panel surface of the flat input panel. As shown in FIG. 4, when the user presses the operation panel surface with, for example, a finger, the first film-like resistance film 15 provided below the operation panel surface Is pressed, and the first film-like resistance film 15 and the second film-like resistance film 16 are short-circuited through the matched openings 21 and 22.
As a result, each of the voltages formed by the X-direction electrode pair and the Y-direction electrode pair also changes. This voltage is detected by an external circuit (not shown) via the output wiring 23, and a coordinate input signal in the X and Y directions is generated based on the voltage. The detection of the voltage and the generation of the coordinate input signals in the X and Y directions can be realized by a known technique generally used in a flat input panel. For example, by applying a voltage to the X-direction electrode pair 12 and detecting the voltage using the electrode of the Y-direction electrode pair 13 as a probe, and vice versa in a short cycle, the voltage in the XY2 direction is detected, and the coordinate input signal is detected. Is generated.

By providing each member as described above, the flat input panel 1 according to the first embodiment of the present invention is provided. Next, a method of manufacturing the flat input panel according to the first embodiment of the present invention will be described with reference to FIGS. FIG. 5 is a flowchart of a method of manufacturing a flat input panel according to the first embodiment of the present invention, and FIG. 6 is a diagram illustrating generation of an insulating film according to the first embodiment of the present invention.

First, in step 101, an X-direction electrode pair 12, Y,
The direction electrode pair 13 and the output wiring are printed in a predetermined pattern as shown in FIG. In step 102, the insulating film is dried. Next, in Step 103, the insulating film generated in Steps 101 and 102 is die-cut into a spectacle frame shape as shown in FIG. 6B to generate the insulating film 11 of the present invention. That is, the first opening 21 is provided between the electrodes of the X-direction electrode pair 12,
A second opening 22 is formed between the electrodes of the Y-direction electrode pair 13, and a lead-out end 31 for connecting a connector for connecting the output wiring 23 to an external circuit is provided. The position of the bent portion 34 of the insulating film 11 is not limited to the position shown in FIG. 6B, but may be, for example, the position shown in FIG. 6C. The printing of the output wiring 23 in 101 also corresponds to it.

Next, in step 104, a film-shaped resistive film is formed. The film-shaped resistance film according to the present embodiment is formed by sputtering ITO (indium tin oxide) on polyethylene terephthalate, but may be formed by sputtering or vapor-depositing a metal oxide on another insulator as described above. . Next, in step 105, the film-like resistive film generated in step 104 is die-cut to a size slightly larger than the operation panel surface, and first and second film-like resistive films 15 and 16 of the present invention are generated.

Next, in step 106, the insulating film 11 is placed such that the surface on which the X-direction electrode pair 12, the Y-direction electrode pair 13 and the output wiring 23 are provided is outside, and the first opening 21 and the second opening 22 is bent at the bent portion 34 so that they coincide with each other, so that the cross section becomes U-shaped as shown in FIG. As a result, a strong insulating layer made of the insulating film 11 is formed between the X-direction electrode pair 12 and the Y-direction electrode pair 13.
The electric fields formed by the direction electrode pair 12 and the Y direction electrode pair 13 are orthogonal to each other.

Next, in step 107, an anisotropic conductive film 14 is adhered to the upper surface of the X-direction electrode pair 12 and the Y-direction electrode pair 13 on the insulating film 11, and the insulating film 11 is further bonded to the first and second electrodes. These members are sandwiched between the film-like resistive films 15 and 16, and these members are thermocompression-bonded.
Thereby, the first and second film-shaped resistive films 15 and 1
6 and the X-direction electrode pair and the Y-direction electrode pair are electrically connected and physically coupled, respectively.

The flat input panel according to the first embodiment of the present invention is generated by the manufacturing method described above. According to the first embodiment of the present invention, the output wiring for electrically connecting each electrode pair and the external circuit is printed on an eyeglass frame-shaped insulating film by, for example, silver paste, and each electrode pair is formed. Since a U-shaped insulating film is formed by bending the insulating film with the surface facing outward, and a flat input panel is formed by sandwiching both sides of the U-shaped insulating film with film-shaped resistive films, manufacturing is easy, Strong insulation can be obtained between each pair of electrodes. Further, since the film-shaped resistive film is formed by vapor deposition or sputtering, a smoother resistive film can be obtained than by screen printing, and the number of manufacturing steps is smaller than that by etching, and the manufacturing cost is reduced. Can be.

Next, a description will be given of a base film with a resistive film, which is a resistor for a flat input panel, according to a second embodiment of the present invention, and a method of manufacturing the same. FIG. 7 is a flowchart of a method for manufacturing a base film with a resistive film for a flat input panel according to a second embodiment of the present invention, and FIG. 8 is a flowchart with a resistive film for a flat input panel according to a second embodiment of the present invention. It is explanatory drawing of a base film.

In step 201 of FIG. 7, FIG.
The conductive film 51 shown in FIG. The conductive film 51 is formed on an insulating film such as polyester, urethane, polyethylene terephthalate (PET), or polyethylene naphthalate (PEN) by, for example, ITO.
(Indium tin oxide), a metal oxide such as zinc oxide or tin oxide, or carbon is formed by vapor deposition or sputtering.

In a conventional example, a conductive powder such as silver, copper or carbon and a resin such as polyester, urethane or vinyl chloride-vinyl acetate copolymer are blended to form a paste, and this paste is formed on a substrate in a predetermined shape. It is formed by screen printing. For this reason, foreign matter is likely to be mixed during screen printing, and projections and non-smooth portions are likely to occur. Also, the thickness of the screen-printed paste tends to be non-uniform. However, according to this embodiment, metal oxide is deposited or sputtered on the insulating film, so that contamination of foreign substances can be prevented, and furthermore, a metal oxide film having a more uniform thickness than screen printing is formed. It is possible to improve the electrical linearity. In general, metal oxides are expensive, but the metal oxides themselves are sputtered or deposited without using a paste in which the metal oxides and the resin are blended, so that material waste can be reduced.

As an alternative to the formation of the conductive film 51, polyester, urethane, polyethylene terephthalate (PET) or polyethylene naphthalate (P
EN) or a metal oxide such as ITO, zinc oxide or tin oxide or carbon may be thermocompression-bonded to an insulating film such as EN) using a rolling roller. As a further alternative, the conductive film 51 may be formed by kneading a metal oxide such as ITO, zinc oxide or tin oxide or carbon into an insulating film such as polyester, urethane or polyethylene terephthalate (PET). In this case, the equipment is simple because it is not necessary to use the above-described apparatus for sputtering, vapor deposition or thermocompression bonding.

As a further alternative, the conductive film 51 may be formed by laminating a metal foil on an insulating film such as polyester, urethane or polyethylene terephthalate (PET) using, for example, an acrylic paste. After the formation of the conductive film 51 as described above, in step 202, as shown in FIG. 8B, the electrode rows 52 are printed on the surface of the conductive film 51 with a silver paste and dried. .

Next, in step 203, the conductive film 51 on which the electrode rows 52 are formed is cut into a predetermined shape to form a resistive film. For example, in FIG. 8C, the resistance film 53a having the electrode pair 52a and the resistance film 53b having the electrode pair 52b are shown. The resistance film according to the conventional example is formed in a predetermined shape at the time of screen printing of the carbon paste, and further, the electrode pairs are screen printed. On the other hand, in the present embodiment, the conductive film 51 on which the electrode rows 52 are formed is cut into a predetermined shape to form the electrode pair 5.
2a (and the resistive film 53b having the electrode pair 53b), and the resistive film can be easily formed only by punching out the conductive film on which the electrode rows 52 having more uniform conductive characteristics are formed. And it can be mass-produced.

Next, in step 204, an adhesive for attaching a resistive film is printed on the base film 61 and dried. The base film 61 is made of polyester, urethane,
It is an insulating film such as polyethylene terephthalate (PET) or polyethylene naphthalate (PEN). The base film 61 is, as shown in FIG.
The shape includes a first surface 62, a second surface 63, a bent portion 64 connecting the first surface 62 and the second surface 63, and a lead-out end 65 for connection to an external circuit. First surface 62
The adhesive is printed on portions 71 and 72 to which the resistive films 53a and 53b are to be attached, respectively, on the surface of the second surface 63.

Next, in step 205, two resistive films 53 are adhered to the base film 61 to produce a base film 81 with a resistive film. As shown in FIG. 8E, the two resistance films 61 are connected to the first surface 62 of the base film 61.
Each electrode pair 5 is attached to a portion 71 and 72 on the surface of the second surface 63 to which the resistance films 53a and 53b are to be attached, respectively.
The electric fields formed by 2a and 52b are attached so that they are orthogonal to each other. Hereinafter, the electrode pairs 52a and 52b are called an X-direction electrode pair and a Y-direction electrode pair, respectively.

According to the manufacturing method described above, a base film with a resistive film for a flat input panel according to the second embodiment of the present invention is produced. The base film 81 with the resistive film thus generated is the bent portion 6 shown in FIG.
In the vicinity of 4, the sheet is bent so as to have a predetermined gap with the surface on which the resistive film 53 is adhered inside, and is used as a resistor for a flat input panel.

Next, a flat panel input panel according to a third embodiment of the present invention will be described. FIG. 9 is a sectional view of a flat input panel according to a third embodiment of the present invention. According to the present embodiment, the flat input panel 9 constituted by using the base film 81 with a resistive film as the resistor for the flat input panel according to the second embodiment of the present invention described with reference to FIGS.
1 is provided.

As shown in FIG. 9, the flat input panel 91 according to the present embodiment includes the above-described base film 81 with a resistive film.
Is bent at a predetermined gap in the vicinity of the bent portion 64 in FIG. 8E with the surface on which the resistive films 53a and 53b are adhered inside, and further between the X-direction electrode pair 52a and the Y-direction electrode pair 52b. With an insulator 75 interposed therebetween. The first surface 62 of the output wiring (not shown) routed from the X-direction electrode pair 52 a to the leading end 65.
The portion that is routed from the second surface 63 to the second surface 63 may be provided in the insulating layer 75 as in a normal flat input panel, or may be printed on the bent portion 64 with a silver paste as in the first embodiment. It may be wired.

When the user presses the flat input panel 91 of this embodiment with, for example, a finger on an operation panel surface (not shown) provided above the resistive base film 81, the upper resistive film 53a is pressed. And is short-circuited to the lower resistive film 53b. As a result, each of the voltages formed by the X-direction electrode pair and the Y-direction electrode pair also changes. This voltage is detected by an external circuit (not shown), and XY2
A coordinate input signal for the direction is generated. The detection of the voltage and the generation of the coordinate input signal in the X and Y directions can be realized by a known technique generally used in a flat input panel. For example, the generation of the coordinate input signal by the method already described in the first embodiment. can do.

The flat input panel according to the third embodiment of the present invention constructed as shown in FIG. 9 has a smoother resistance film surface and a uniform input load as compared with the conventional example. Further, the amount of metal oxide or carbon used for forming the resistance film can be reduced, so that the manufacturing cost can be reduced.

[0047]

As described above, according to the first aspect, in the flat input panel, the output wiring for electrically connecting each electrode pair and the external circuit is formed on the eyeglass frame-shaped insulating film by, for example, silver paste. To form a U-shaped insulating film by bending the insulating film on which the electrode pairs are formed with the surface of the insulating film facing outside, and sandwiching both sides of the U-shaped insulating film with film-shaped resistive films to input a plane. Since the panel is configured, it is easy to manufacture, and strong insulation can be obtained between each pair of electrodes. Further, since the film-shaped resistive film is formed by vapor deposition or sputtering, a smoother resistive film can be obtained than by screen printing, and the number of manufacturing steps is smaller than that by etching, and the manufacturing cost is reduced. Can be.

According to the second invention, the conductive film is
Since the metal oxide is formed by vapor deposition or sputtering on the insulating film, contamination of foreign substances can be prevented, and a metal oxide film having a more uniform thickness than screen printing can be generated. Linearity
And material waste can be reduced. When the conductive film is formed by thermocompression bonding using a rolling roller, a more flat conductive film can be formed.
When a conductive film is formed by kneading metal oxide or carbon into an insulating film, sputtering,
Since there is no need to use a device for vapor deposition or thermocompression bonding, the equipment is simpler. Since the electrode pair is printed on the conductive film formed in this manner and then cut into a predetermined shape, it is easy to manufacture the resistor for the flat input panel.

According to the third aspect, since the flat input panel is constituted by using the flat input panel resistor according to the second invention, the input load can be made uniform. Further, the amount of metal oxide or carbon used for forming the resistance film can be reduced, so that the manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a flat input panel according to a first embodiment of the present invention.

FIG. 2 is a top view of the insulating film according to the first embodiment of the present invention.

FIG. 3 is a diagram schematically showing an anisotropic conductive film.

FIG. 4 is a cross-sectional view illustrating a case where the flat input panel according to the first embodiment of the present invention is pressed.

FIG. 5 is a flowchart of a method of manufacturing a flat input panel according to the first embodiment of the present invention.

FIG. 6 is a diagram illustrating generation of an insulating film according to the first embodiment of the present invention.

FIG. 7 is a flowchart of a method of manufacturing a base film with a resistive film for a flat input panel according to a second embodiment of the present invention.

FIG. 8 is an explanatory view of a base film with a resistive film for a flat input panel according to a second embodiment of the present invention.

FIG. 9 is a sectional view of a flat input panel according to a third embodiment of the present invention.

[Explanation of symbols]

 1, 91: Flat input panel 11: Insulating film 12, 52a: X-direction electrode pair 13, 52b: Y-direction electrode pair 14: Anisotropic conductive film 15: First film-shaped resistive film 16: Second film-shaped Resistive film 21 First opening 22 Second opening 32, 62 First surface 33, 63 Second surface 51 Conductive film 52 Electrode array 53a, 53b Resistive film 61 Base film 81 Resistance Base film with membrane

Claims (7)

[Claims] 1. A flat input panel having an input touch operation surface, wherein a first opening is formed and a surface having an X-direction electrode pair on a surface thereof, wherein the X-direction electrode pair is the A first surface formed on the periphery of one opening; and a surface having a second opening formed thereon and having a Y-direction electrode pair on the surface, wherein the Y-direction electrode pair is formed on the periphery of the second opening. The second surface to be formed is formed by closely adhering the respective back surfaces of the first surface and the second surface such that the first opening and the second opening coincide with each other, The first opening and the second opening include a U-shaped insulating film corresponding to the touch operation surface, and a film-shaped resistor formed by sandwiching the U-shaped insulating film. And a flat input panel. 2. An output wiring for electrically connecting each electrode of the X-direction electrode pair and the Y-direction electrode pair to an external circuit is formed by printing on the U-shaped insulating film. The flat input panel according to claim 1. 3. The flat input panel according to claim 1, wherein the U-shaped insulating film and the resistor are formed by thermocompression bonding using an anisotropic conductive material having conductivity only in a vertical direction. . 4. A resistor for a flat-panel input panel having an input touch operation surface, wherein said resistor has two electrode pairs formed on its surface and is previously cut into a predetermined size. A resistor, wherein the conductive film has a first surface and a second surface adhered to the surface such that the two electrode pairs become an X-direction electrode pair and a Y-direction electrode pair, respectively. 5. The resistor according to claim 4, wherein the conductive film is formed by sputtering, vapor deposition or thermocompression of a metal oxide on the surface of the insulating film. 6. The resistor according to claim 4, wherein the conductive film is formed by kneading a metal oxide into an insulating film. 7. A flat input panel having an input touch operation surface, wherein two conductive films each having an electrode pair formed on a surface thereof and die-cut into a predetermined size in advance are provided. Have a first surface and a second surface adhered to the surface so as to form an X-direction electrode pair and a Y-direction electrode pair, respectively, and the first surface is opposed to each other with a predetermined gap. And a resistor formed by bending the second surface, and an insulation provided between the X-direction electrode pair and the Y-direction electrode pair provided on each of the first and second surfaces. A flat input panel comprising a body.