JP4428820B2 - Planar input panel and its resistor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a flat input panel having a touch operation surface for input to a processing apparatus such as a computer and a resistor for the flat input panel.
[0002]
[Prior art]
A flat input panel is used as one of input devices for a processing device such as a computer. The flat input panel has an input panel (flat input pad, flat input mouse) whose operation panel surface is transparent or opaque, and the user presses or touches the operation panel surface of the flat input panel with a finger or a pen. Can be input to the computer.
[0003]
One method of pressing or touch sensing on a flat input panel is to use a resistor generally called a resistive film.
The resistance film contact type flat input panel includes a first resistance film provided below the operation panel surface, a second resistance film provided with a predetermined gap from the first resistance film, and the two resistance films. And two pairs of electrodes provided on each of the electrodes and provided to form a voltage in a direction perpendicular to each other. A film or glass is used as the base member for supporting 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 resistance film are bent and a repulsive force is generated. The repulsive force is substantially proportional to the stroke generated by pressing the finger, and the repulsive force increases as the stroke becomes longer. When the finger is released, the gap between the resistance films returns to the normal state due to the elastic force of the resistance film and the base member.
[0004]
When performing an input operation using such a flat input panel, the user depresses the operation panel surface until the two resistance films come into contact with each other and short-circuit. When a short circuit occurs between the two resistance films, the voltages formed so that the two electrode pairs are orthogonal to each other also change. Each voltage is read to generate a coordinate input signal, which is used as an input to the computer.
[0005]
As a conventional method for manufacturing a flat input panel, an insulating paste is screen-printed over multiple layers on a film surface on which a resistive film is formed, and then electrodes and circuits are printed on the insulating layer to form a desired shape. There are a method of punching, a method of partially etching the resistance film, printing an electrode and a circuit on the insulating layer, and punching the die into a desired shape. In general, this resistive film is made by blending conductive powder such as silver, copper or carbon and polyester, urethane or vinyl chloride vinyl acetate copolymer into a paste form, and this paste is screened in a predetermined shape on the substrate. Generated by printing.
[0006]
[Problems to be solved by the invention]
In the production of a resistance film contact type flat input panel, a method using screen printing of an insulating paste to form an insulating layer has defects such as pinholes, insufficient drying, uncured, or film thickness reduction due to printing defects. As a result, there is a problem that a short circuit or silver migration occurs between the electric circuit of silver paste and the resistance film. In addition, the method using etching for forming the insulating layer is complicated because it requires a plurality of steps such as etching mask printing, drying, etching, mask peeling, cleaning, and drying.
[0007]
Further, a resistance film for a resistance film contact type flat input panel according to a conventional example is generated by screen printing a carbon paste in a predetermined shape, for example, on a substrate. Unnecessary protrusions and non-smooth portions are likely to be generated on the surface of the resistive film due to agglomeration of carbon particles, mesh marks by a screen mask, unevenness of screen printing, or the like.
[0008]
As a result, there is a problem in that a predetermined gap necessary in normal times cannot be maintained between the resistance films, and the input load is reduced. That is, even if the user does not intend to operate the flat input panel, a slight touch between the operation panel surfaces may cause a short circuit between the resistive films, resulting in malfunction. Furthermore, when the protrusion is particularly large, a short circuit may occur between the resistance films even during normal operation.
[0009]
Therefore, in view of the above problems, a first object of the present invention is to provide a high-quality and easy-to-manufacture flat input panel and a method for manufacturing the same, particularly suppressing defects related to the insulating layer.
In view of the above problems, a second object of the present invention is to provide a high-quality flat input panel resistor having no projections and unnecessary irregularities and free from variations in input load.
[0010]
In view of the above problems, a third object of the present invention is to provide a flat input panel including a high-quality resistor that is smooth and free from variations in input load without protrusions or unnecessary irregularities.
[0011]
[Means for Solving the Problems]
In order to achieve the first object, according to the first invention, a flat input panel having an input touch operation surface has a first opening and a surface having an X-direction electrode pair on the surface. The X-direction electrode pair is a surface having a first surface formed at the periphery of the first opening and a second opening formed and having a Y-direction electrode pair on the surface, and the Y-direction electrode pair. Is a second surface formed at the periphery of the second opening; A U-shaped insulating film having a connecting portion that connects a part of each of the first and second surfaces that are independent of each other, So that the first opening and the second opening coincide. Focusing on the connecting part Each back surface of the first surface and the second surface But Adhesion By being bent like A U-shaped insulating film in which the first opening and the second opening formed in close contact with each other correspond to the touch operation surface; and a film-shaped resistor formed by sandwiching and stretching the U-shaped insulating film; Is provided.
[0012]
In order to achieve the second object, according to the second invention, a resistor for a flat input panel having a touch operation surface for input is provided on the surface. Two electrode Column Formed Conductive film Die-cut to a predetermined size Resistance film Two The Two Consisting of electrode arrays The electrode pair becomes an X-direction electrode pair and a Y-direction electrode pair , Predetermined positions of the first surface and the second surface on the base film Stuck on each Formed by .
[0013]
In order to achieve the third object, according to the third invention, a flat input panel having a touch operation surface for input is provided on the surface. Two An electrode pair is formed Conductive film Die-cut to a predetermined size Resistance film Two The Two Consisting of electrode arrays Electrode pair Respectively To be an X-direction electrode pair and a Y-direction electrode pair , Predetermined positions of the first surface and the second surface on the base film Stuck on each A resistor formed by A resistor formed by bending the first surface and the second surface so that the surfaces face each other with a predetermined gap, and an X-direction electrode pair provided on each of the first surface and the second surface; And an insulator provided between the Y-direction electrode pair.
[0014]
According to the first invention, an output wiring for electrically connecting each electrode pair and an external circuit is provided on the insulating film, and the U-shape is formed by bending the insulating film on which each electrode pair is formed outward. A flat input panel is formed by forming an insulating film and sandwiching both sides of the U-shaped insulating film with a film-like resistive film, so that it is easy to manufacture and can obtain strong insulation between each pair of electrodes. It is possible to provide a high-quality and easy-to-manufacture flat input panel that suppresses defect defects related to the insulating layer.
[0015]
According to the second invention, since the conductive film is formed by vapor-depositing or sputtering metal oxide on the insulating film, it is possible to prevent foreign matter from entering, and the conductive film thus formed has an electrode. Since the pair is printed and then die-cut into a predetermined shape, a high-quality flat input panel resistor without projections and unnecessary irregularities and free from variations in input load can be provided.
[0016]
According to the third aspect of the invention, the flat leading panel is configured using the resistor for the flat input panel according to the second aspect of the invention, so that variations in the input load can be reduced and smoothness without protrusions and unnecessary irregularities. Thus, it is possible to provide a flat input panel having a high-quality resistor with no variation in input load.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a sectional view of a flat input panel according to a first embodiment of the present invention, and FIG. 2 is a top view of an insulating film according to the first embodiment of the present invention.
The flat input panel 1 according to this 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 resistance film 15, and a second film And a film-like resistive film 16.
[0018]
As shown in FIG. 2, the insulating film 11 has a so-called eyeglass frame shape including a first surface 32 in which a first opening 21 is formed and a second surface 33 in which a second opening 22 is formed. An X-direction electrode pair 12 and a Y-direction electrode pair 13 are provided on the surface. When the first surface 32 and the second surface 33 of the insulating film 11 are folded in the vicinity of the one-dot chain line of the bent portion 34 so that the back surfaces of the first surface 32 and the second surface 33 are 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 formed surface is on the outside. Opened and matched openings 21 and 22 correspond to an operation panel surface (not shown) in the flat input panel. That is, when the user presses down the operation panel surface with a finger, for example, a first film resistance film 15 (described later) provided below the operation panel surface is pressed, and at this time, the first film passes through the openings 21 and 22. That is, the film-like resistance film 15 and the second film-like resistance film 16 are short-circuited.
[0019]
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, polyethylene naphthalate (PEN), or the like. Good. The thickness of the insulating film 11 is 50 μm, for example.
The electrodes of the X-direction electrode pair 12 and the Y-direction electrode pair 13 are opposed to the peripheral portions of the first opening 21 and the second opening 22 on the same plane of the insulating film 11. The X-direction electrode pair 12 and the Y-direction electrode pair 13 have the back surfaces of the first surface 32 and the second surface 33 of the insulating film 11 with the surface on which the X-direction electrode pair 12 and the Y-direction electrode pair 13 are formed as the outside. The electric fields formed by the respective bent portions 34 so as to be in close contact with each other are provided so as to be orthogonal to each other. The X direction electrode pair 12 and the Y direction electrode pair 13 are printed with a silver paste, and the width thereof is, for example, 1.5 to 2.0 mm.
[0020]
Furthermore, on the surface of the insulating film 11, the output wiring 23 for electrically connecting the four electrodes of the X direction electrode pair 12 and the Y direction electrode pair 13 and an external circuit is also wired. This output wiring 23 is for electrically wiring each electrode to a connector connection leading end 31 with an external circuit (not shown), printed on the surface of the insulating film 11 with silver paste, The width is, for example, 0.5 to 1.0 mm. According to the present embodiment, the insulating film 11 has a spectacle frame shape as shown in FIG. 2, but is wired from the first surface 32 of FIG. Since the output wiring can also be configured simply by printing on the bent portion 34 that joins the second surface 33 and the first surface 32, the output wiring is easy to manufacture, and an insulating layer portion using a conductive adhesive that has been generally performed in the past is used. There is no need for piercing output wiring.
[0021]
The spectacle frame-shaped insulating film 11 provided with the X-direction electrode pair 12, the Y-direction electrode pair 13 and the output wiring 23 as described above is the bent portion 34 shown in FIG. The first surface 32 and the second surface 33 are folded so that the first opening 21 and the second opening 22 coincide with each other with the side of the surface on which the pair of direction electrodes 13 and the output wiring 23 are provided facing outward. As a result, a U-shape as shown in FIG. In this way, a strong insulating layer is formed between the X-direction electrode pair 12 and the Y-direction electrode pair 13 by folding the insulating film 11. In the method of generating an insulating layer using screen printing or etching over multiple layers as in the conventional example, the film thickness tends to decrease and short circuit and silver migration are likely to occur, but in this example, a film made of, for example, polyethylene terephthalate is used. Since the insulating layer is formed by bending, reliable insulation can be easily obtained.
[0022]
An anisotropic conductive film 14 for adhering the X-direction electrode pair 12 and the Y-direction electrode pair 13 to film resistive films 15 and 16 described later is attached to 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.
[0023]
In this embodiment, the anisotropic conductive film 14 used for bonding the film-like resistive films 15 and 16 to the X-direction electrode pair 12 and the Y-direction electrode pair 13 has conductivity only in the vertical direction in FIG. However, as shown in FIG. 3A, the conductive material particles 36 are mixed in the adhesive 35, and a commercially available product may be used. Using this anisotropic conductive film 14, a thin layer of the anisotropic conductive film 14 is formed by thermocompression bonding of the insulating film 11 and the film-like resistive films 15 and 16 as will be described later, and FIG. ), The film-like resistive film 15 and the X-direction electrode pair 12 are electrically connected via the conductive material particles 36.
[0024]
The first and second film-like resistive films 15 and 16 cover the entire side of the anisotropic conductive film 14 different from the side on which the insulating film 11 is adhered, that is, sandwich the insulating film 11. Each is stretched in the form. In this way, the first and second film resistance films 15 and 16 are electrically connected to the X-direction electrode pair and the Y-direction electrode pairs 12 and 13 using the anisotropic conductive film 14, respectively. Physically bonded.
[0025]
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), for example, ITO (indium tin oxide), zinc oxide, or oxide. It is a conductive film formed by vapor deposition or sputtering of a metal oxide such as tin or carbon. The formation of the resistance film by vapor deposition or sputtering can provide a smoother resistance film than the formation by screen printing, and is very beneficial because it requires fewer manufacturing steps than the formation by etching. In the first and second film-like resistive films 15 and 16 according to the present embodiment, for example, polyethylene terephthalate 41 is sputtered with ITO 42.
[0026]
Incidentally, the output wiring 23 is for electrically wiring each electrode of the X direction electrode pair 12 and the Y direction electrode pair 13 and an external circuit. In the resistance film contact type flat input panel, the resistance film should be short-circuited only when the operation panel is pressed. Therefore, the output wiring 23 should not be inadvertently in contact with each film-like resistance film. That is, the output wiring 23 and the first and second film resistance films 15 and 16 need to be reliably insulated. 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, but the size of the output wiring 23 is the X-direction electrode pair 12 as described above. And smaller than the Y-direction electrode pair 13. Accordingly, for example, electrical insulation may be obtained by designing the insulating film 11 and the first and second film-like resistive films 15 and 16 to have a spatial margin. As an alternative example, an insulator such as an insulating film may be further provided on the output wiring 23 for shielding.
[0027]
FIG. 4 is a cross-sectional view illustrating when the flat input panel according to the first embodiment of the present invention is pressed.
As described above, the insulating film 11 has a glasses frame shape in which the first opening 21 and the second opening 22 are formed as shown in FIG. The first opening 21 and the second opening 22 coincide with each other when folded so that the back surfaces of the second surface 33 are in close contact with each other. Opened and matched openings 21 and 22 correspond to the operation panel surface of the flat input panel, and are provided below the operation panel surface when the user presses the operation panel surface with, for example, a finger as shown in FIG. The first film-like resistive film 15 is pushed down, and the first film-like resistive film 15 and the second film-like resistive film 16 are short-circuited through the matched openings 21 and 22 that are folded together. As a result, a change also occurs in each voltage formed by the X-direction electrode pair and the Y-direction electrode pair. This voltage is detected by an external circuit (not shown) via the output wiring 23 described above, and based on this, a coordinate input signal in the XY2 directions is generated. The detection of the voltage and the generation of the coordinate input signal related to the XY2 directions can be realized by a known technique that is usually used in the planar input panel. For example, by applying a voltage to the X-direction electrode pair 12 and detecting the voltage using the electrodes of the Y-direction electrode pair 13 as a probe, and vice versa, the voltage in the XY2 direction is detected and the coordinate input signal is repeated. There is a method of generating.
[0028]
As described above, the flat input panel 1 according to the first embodiment of the present invention is provided by providing each member.
Next, a method for manufacturing a 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 for manufacturing a flat input panel according to the first embodiment of the present invention, and FIG. 6 is a diagram illustrating the generation of an insulating film according to the first embodiment of the present invention.
[0029]
First, in step 101, an X-direction electrode pair 12, a Y-direction electrode pair 13 and an output wiring are formed in a predetermined pattern as shown in FIG. Print on. In step 102, the insulating film is dried.
Next, in Step 103, the insulating film generated in Steps 101 and 102 is punched 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 formed between the electrodes of the X-direction electrode pair 12, the second opening 22 is formed between the electrodes of the Y-direction electrode pair 13, and the output wiring 23 and the external circuit are connected to each other. A lead-out end 31 for connecting the connector is provided. The position of the bent portion 34 of the insulating film 11 is not limited to that shown in FIG. 6 (b). For example, the bent portion 34 may be located at the position shown in FIG. 6 (c). The printing of the output wiring 23 in 101 corresponds to that.
[0030]
Next, in step 104, a film-like resistive film is generated. The film-like resistive film according to this embodiment is formed by sputtering ITO (indium tin oxide) on polyethylene terephthalate, but may be formed by sputtering or vapor-depositing metal oxide on other insulators 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 the first and second film-like resistive films 15 and 16 of the present invention are produced.
[0031]
Next, in step 106, the first opening 21 and the second opening 22 are formed on the insulating film 11 with the surface side on which the X-direction electrode pair 12, the Y-direction electrode pair 13 and the output wiring 23 are provided outside. The bent portion 34 is bent so as to coincide with each other so that the cross section becomes a U-shape 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, and each electric field formed by the X-direction electrode pair 12 and the Y-direction electrode pair 13 at this time. Are orthogonal to each other.
[0032]
Next, in step 107, the anisotropic conductive film 14 is attached to the upper surfaces 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 film resistances. The membranes 15 and 16 are sandwiched, and these members are thermocompression bonded. As a result, the first and second film resistance films 15 and 16 are electrically connected and physically coupled to the X-direction electrode pair and the Y-direction electrode pair, respectively.
[0033]
The flat input panel according to the first embodiment of the present invention is generated by the manufacturing method as described above.
According to the first embodiment of the present invention, an output wiring for electrically connecting each electrode pair and an external circuit is printed on an eyeglass frame-shaped insulating film with, for example, silver paste, thereby forming each electrode pair. Since the U-shaped insulating film is formed by bending the surface of the insulating film outward, and the flat input panel is configured by sandwiching both sides of the U-shaped insulating film with the film-like resistive film, it is easy to manufacture, Strong insulation can also be obtained between each electrode pair. In addition, since the film-like resistive film is formed by vapor deposition or sputtering, a smoother resistive film can be obtained as compared with the formation by screen printing, and the manufacturing process is less than the formation by etching, thereby reducing the manufacturing cost. Can do.
[0034]
Subsequently, a base film with a resistance film, which is a resistor for a flat input panel according to a second embodiment of the present invention, and a manufacturing method thereof will be described.
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 the second embodiment of the present invention. It is explanatory drawing of a base film.
[0035]
In step 201 of FIG. 7, the conductive film 51 shown in FIG. 8A is generated. The conductive film 51 is made of an insulating film such as polyester, urethane, polyethylene terephthalate (PET), or polyethylene naphthalate (PEN) with a metal oxide or carbon such as ITO (indium tin oxide), zinc oxide or tin oxide. It is formed by vapor deposition or sputtering.
[0036]
In the conventional example, conductive powder such as silver, copper or carbon and resin such as polyester, urethane or vinyl chloride vinyl acetate copolymer are blended to form a paste, and this paste is screen printed in a predetermined shape on the substrate. It is formed by doing. For this reason, foreign matters are easily mixed during screen printing, and protrusions and non-smooth portions are likely to occur. Also, the film thickness of the screen printed paste tends to be non-uniform. However, according to the present embodiment, the metal oxide is deposited or sputtered on the insulating film, so that foreign matter can be prevented from being mixed. Furthermore, a metal oxide film having a more uniform thickness than that of screen printing can be generated. And electrical linearity is also improved. Generally, metal oxide is expensive, but waste of material can be reduced because the metal oxide itself is sputtered or deposited without using a paste in which the metal oxide and the resin are blended.
[0037]
As an alternative example of the production of the conductive film 51, a metal oxide such as ITO, zinc oxide or tin oxide or carbon is rolled on an insulating film such as polyester, urethane, polyethylene terephthalate (PET) or polyethylene naphthalate (PEN). May be used for thermocompression bonding.
As a further alternative, the conductive film 51 may be produced 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, since it is not necessary to use the above-mentioned apparatus for sputtering, vapor deposition, or thermocompression bonding, the equipment is simple.
[0038]
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, acrylic glue.
After generating the conductive film 51 as described above, in step 202, as shown in FIG. 8B, the electrode array 52 is printed on the surface of the conductive film 51 with silver paste and dried. .
[0039]
Next, in step 203, the conductive film 51 on which the electrode array 52 is formed is punched into a predetermined shape, and a resistance film is formed. For example, in FIG.8 (c), it shows as the resistance film 53a which has the electrode pair 52a, and the resistance film 53b which has the electrode pair 52b. The resistive film according to the conventional example is formed into a predetermined shape at the time of screen printing of the carbon paste, and further, the electrode pair is screen printed. On the other hand, in this embodiment, the conductive film 51 on which the electrode array 52 is formed is punched into a predetermined shape, thereby generating the resistance film 53a having the electrode pair 52a (and the resistance film 53b having the electrode pair 53b). Therefore, the resistive film can be easily and mass-produced by simply punching out the conductive film on which the electrode array 52 having more uniform conductive characteristics is formed.
[0040]
Next, in step 204, the adhesive for sticking the resistance film is printed on the base film 61 and dried. The base film 61 is an insulating film such as polyester, urethane, polyethylene terephthalate (PET), or polyethylene naphthalate (PEN). As shown in FIG. 8D, the base film 61 is connected to the first surface 62, the second surface 63, the bent portion 64 that joins the first surface 62 and the second surface 63, and an external circuit. The lead-out end portion 65 of the shape. The adhesive is printed on the portions 71 and 72 to which the resistance films 53a and 53b are to be attached, respectively, on the surfaces of the first surface 62 and the second surface 63.
[0041]
Next, in step 205, two resistance films 53 are attached to the base film 61 to generate a base film 81 with a resistance film. As shown in FIG. 8E, the two resistance films 61 are formed on the portions 71 and 72 where the resistance films 53a and 53b on the surfaces of the first surface 62 and the second surface 63 of the base film 61 are to be attached, respectively. The electric fields formed by the electrode pairs 52a and 52b are attached so as to be orthogonal to each other. Hereinafter, the electrode pairs 52a and 52b are referred to as an X-direction electrode pair and a Y-direction electrode pair, respectively.
[0042]
A base film with a resistive film for a flat input panel according to the second embodiment of the present invention is produced by the manufacturing method as described above.
The base film 81 with the resistance film generated in this way is bent so as to have a predetermined gap with the surface to which the resistance film 53 is attached in the vicinity of the bent portion 64 in FIG. Used as a resistor for panels.
[0043]
Subsequently, a flat 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, a flat input panel 91 configured by using a base film 81 with a resistive film as a resistor for a flat input panel according to the second embodiment of the present invention described with reference to FIGS. Is provided.
[0044]
As shown in FIG. 9, the flat input panel 91 according to the present embodiment has the above-mentioned base film 81 with a resistive film on the inside where the resistive films 53a and 53b are attached in the vicinity of the bent portion 64 in FIG. And bent with a predetermined gap, and an insulator 75 is sandwiched between the X-direction electrode pair 52a and the Y-direction electrode pair 52b. Of the output wiring (not shown) routed from the X-direction electrode pair 52a to the leading end 65, the portion led from the first surface 62 to the second surface 63 is the insulating layer 75 as in the case of a normal planar input panel. It may be provided inside, or alternatively, as in the first embodiment, the bent portion 64 may be printed with a silver paste and wired.
[0045]
When the user presses down the operation panel surface (not shown) provided above the base film 81 with the resistance film, for example, with a finger, the upper input resistance film 53a is pressed down. Short-circuits with the resistance film 53b on the side. As a result, a change also occurs in each voltage formed by the X-direction electrode pair and the Y-direction electrode pair. This voltage is detected by an external circuit (not shown), and based on this, a coordinate input signal for the XY2 direction is generated. The detection of the voltage and the generation of the coordinate input signal relating to the XY2 directions can be realized by a known technique usually used in the planar input panel. For example, the generation of the coordinate input signal is performed by the method already described in the first embodiment. can do.
[0046]
The flat input panel according to the third embodiment of the present invention configured as shown in FIG. 9 has a smoother resistance film surface and a uniform input load than the conventional example. Furthermore, since the amount of metal oxide or carbon used to form the resistance film can be reduced, the manufacturing cost can be reduced.
[0047]
【The invention's effect】
As described above, according to the first invention, in the flat input panel, the output wiring for electrically connecting each electrode pair and the external circuit is printed on the spectacle frame-shaped insulating film with, for example, silver paste, Since a U-shaped insulating film is formed by bending the surface of the insulating film on which each electrode pair is formed outward, and a flat input panel is configured by sandwiching both sides of the U-shaped insulating film with a film-shaped resistive film It is easy to manufacture, and strong insulation can be obtained between each pair of electrodes. In addition, since the film-like resistive film is formed by vapor deposition or sputtering, a smoother resistive film can be obtained as compared with the formation by screen printing, and the manufacturing process is less than the formation by etching, thereby reducing the manufacturing cost. Can do.
[0048]
According to the second invention, since the conductive film is formed by depositing or sputtering a metal oxide on the insulating film, it is possible to prevent foreign matter from being mixed in, and furthermore, a more uniform thickness than screen printing. Thus, a metal oxide film can be formed, electrical linearity can be improved, and material waste can be reduced. When the conductive film is formed by thermocompression using a rolling roller, a flatter conductive film can be formed. In addition, when a conductive film is formed by kneading a metal oxide or carbon into an insulating film, it is not necessary to use an apparatus for sputtering, vapor deposition, or thermocompression bonding, so that the facilities are further simplified. Since the electrode pair is printed on the conductive film formed in this manner and then die-cut into a predetermined shape, it is easy to manufacture a resistor for a flat input panel.
[0049]
According to the third aspect, since the flat input panel is configured using the flat input panel resistor according to the second aspect, the input load can be made uniform. Furthermore, since the amount of metal oxide or carbon used to form the resistance film can be reduced, 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 an 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 when 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 showing 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 diagram 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 cross-sectional view of a flat input panel according to a third embodiment of the present invention.
[Explanation of symbols]
1, 91 ... plane input panel
11 ... Insulating film
12, 52a ... X direction electrode pair
13, 52b ... Y direction electrode pair
14 ... Anisotropic conductive film
15 ... 1st film-like resistive film
16 ... 2nd film-like resistive film
21 ... 1st 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. Base film with resistance film

Claims (7)

A flat input panel having a touch operation surface for input,
A surface having an X-direction electrode pair on a surface thereof, wherein the X-direction electrode pair is formed on a peripheral edge of the first opening;
A second opening is formed and a surface having a Y-direction electrode pair on the surface, wherein the Y-direction electrode pair is formed on a peripheral edge of the second opening;
A U-shaped insulating film having a connecting portion that connects a part of each of the first surface and the second surface, each of which is centered on the connecting portion so that the first opening and the second opening coincide with each other. to be formed by being bent such that each back side of the first surface and the second surface is in close contact, the match with said first opening in intimate contact the second opening corresponding to the touch operation surface A U-shaped insulating film;
A flat input panel comprising a film-like resistor formed by sandwiching and extending the U-shaped insulating film.   The output wiring for electrically connecting each electrode of the X direction electrode pair and the Y direction electrode pair and an external circuit is formed by printing on the U-shaped insulating film. Flat input panel.   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 the vertical direction. A resistor for a flat input panel having a touch operation surface for input,
The resistor comprises two resistance films formed by previously punching a conductive film having two electrode rows on the surface into a predetermined size, and each of the electrode pairs comprising the two electrode rows is in the X direction. A resistor characterized by being formed by adhering to predetermined positions on a first surface and a second surface on a base film so as to be an electrode pair and a Y-direction electrode pair.   The resistor according to claim 4, wherein the conductive film is formed by sputtering, vapor deposition, or thermocompression bonding of a metal oxide to the surface of the insulating film.   The resistor according to claim 4, wherein the conductive film is formed by kneading a metal oxide into an insulating film. A flat input panel having a touch operation surface for input,
Two electrode rows in advance a conductive film formed predetermined resistive film 2 formed by die-cutting to size, the two respective electrode pairs consisting of the electrode column X-direction electrode pairs and the Y direction on the surface A resistor formed by adhering to a predetermined position on the first surface and the second surface on the base film so as to form an electrode pair, with each of the surfaces facing each other with a predetermined gap therebetween A resistor formed by bending the first surface and the second surface;
A flat input panel comprising: an insulator provided between the X-direction electrode pair and the Y-direction electrode pair provided on each of the first surface and the second surface.

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