JP2012018590A - Input device and electro-optical device using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an input device which excels in visibility of a screen of a display device.SOLUTION: An input device 10 includes a substrate 21 having an upper electrode pattern 13 formed on one surface of a planar base material 30 and a lower electrode pattern 14 formed on the other surface of the planar base material 30, a surface member 20 whose one surface is an operation surface, and a first adhesive layer 31 for pasting the one surface of the substrate 21 and the other surface of the surface member 20. The substrate 21 and the surface member 20 are integrally pasted through the first adhesive layer 31, and each of the base material 30 and the surface member 20 is made of an optically isotropic light-transmitting material.

Description

  The present invention relates to a structure of an input device capable of detecting an input coordinate position.

Currently, an electro-optical device in which an input device is combined with a display device is used. The input device that detects the input coordinate position is classified into several methods. For example, as shown in Patent Document 1 below, a capacitive touch panel includes a base material, an upper electrode pattern formed on one surface of the base material, and a lower electrode formed on the other surface of the base material. And a pattern.
Such an input device is arranged so as to be superimposed on the screen of the display device to constitute the electro-optical device. However, since the operator sees information display on the display device screen through the input device, the screen brightness, etc. Visibility performance is very important. Therefore, high transmittance is required as one of the performances of the touch panel.
Furthermore, since external light is reflected and visually recognized inside the touch panel or the display device screen, the display contrast is lowered or the visibility of the screen is deteriorated. Reflection of outside light is a significant problem especially when used outdoors, and various proposals have been made to reduce reflection of outside light.
When the display device is a liquid crystal display device and has an information display principle using linearly polarized light, a reflection reducing method using polarization characteristics is known. Similarly, a reflection reduction method using a polarizing plate has been proposed for a touch panel arranged so as to overlap with a display device.
Patent Document 2 discloses an antireflection method using a principle that a polarizing plate is disposed on the surface of an input device, so that external light that has passed through the polarizing plate is reflected by the polarizing plate on the surface even if it is reflected inside the touch panel or the like. ing. In particular, since the resistive touch panel has an air layer between the upper electrode and the lower electrode, a polarizing plate must be disposed on the touch panel surface (operator side) as an antireflection method. When a polarizing plate is added, the luminance is reduced by about 7% with respect to the screen luminance of the liquid crystal display device, so that there is a problem that the transmittance of the touch panel is lowered and a problem that the cost of adding the polarizing plate is increased. Further, the operation surface is a polarizing film, and has a problem that it is easily damaged.
Patent Document 3 discloses an antireflection method in which an air layer provided with an antireflection film in which a plurality of thin films having different refractive indexes are stacked is not interposed.
On the other hand, in the case of a display device using polarized light such as a liquid crystal display device, the design is made in consideration of the axial direction of the polarizing plate arranged in the display device so that the visibility does not deteriorate even when viewed through polarized sunglasses. Patent Document 4 discloses a configuration in which the angle of the polarization axis of linearly polarized light is set to 45 degrees or converted into circularly polarized light as a liquid crystal display device compatible with polarized sunglasses.

JP 2008-97283 A Japanese Patent Publication No. 2006-28131 JP 2008-83491 A JP 2009-282424 A

However, the input device combined with the liquid crystal display device using polarized light has a factor that deteriorates the visibility of the display device screen in addition to the transmittance and the reflection of external light. That is, since the polyethylene terephthalate (PET) film normally used for the base material of the touch panel is a uniaxial or biaxial stretched film, a display device with a touch panel has unevenness and dullness when viewed through polarized sunglasses. There was a visible problem.
Therefore, it has been necessary to take measures against the problem that unevenness and dullness of the screen are seen through the polarized sunglasses without further adding an expensive additional material or deteriorating the transmittance of the touch panel.

  Therefore, the present invention is for solving the problem that screen unevenness and dullness are seen when viewed through polarized sunglasses, and an input device excellent in visibility of a display device screen and an electro-optical device using the input device The purpose is to provide.

The input device in the present invention is
A substrate in which a first electrode pattern is formed on one surface of a planar substrate and a second electrode pattern is formed on the other surface, a surface member having one surface as an operation surface, and the substrate A first pressure-sensitive adhesive layer that bonds the other surface of the surface member to the other surface of the surface member, and the substrate and the surface member are bonded together via the first pressure-sensitive adhesive layer. The base member and the surface member are optically isotropic translucent materials.
Accordingly, even when the substrate and the surface member are arranged so as to overlap with a display device using polarized light such as a liquid crystal display device, the substrate and the surface member are optically isotropic translucent materials. There is no effect on the polarization characteristics. Therefore, it is possible to solve the problem that the screen is uneven or dull when viewed through polarized sunglasses.
In this invention, it has a protective material that protects the other surface of the substrate, and a second adhesive layer that bonds the other surface of the substrate and one surface of the protective material, and the protective material, It is preferable that the substrate is integrally bonded via the second adhesive layer, and the protective material is an optically isotropic translucent material. This can prevent the second electrode pattern from being damaged during assembly.
Moreover, in this invention, it has transparent resin which protects the other surface in the said board | substrate, and the said transparent resin may be formed by printing on the other surface in the said board | substrate. In this way, a thinner input device can be realized.
Furthermore, the present invention includes a display device that displays information so as to be visible, and a third adhesive layer that bonds the other surface of the substrate and the display device, and the substrate and the display device are While being bonded together via the 3rd adhesion layer, it can be set as the structure which can visually recognize the information display of the display device through the substrate from one side of the surface member. This makes it possible to reduce the reflection of external light inside the input device and to use an input device with a high transmittance without modifying the display device compatible with polarized sunglasses. It is possible to realize an electro-optical device excellent in the above.

In the present invention,
A first substrate having a first electrode pattern formed on any surface of the planar first substrate, and a second electrode pattern formed on any surface of the planar second substrate A second adhesive substrate, a surface member having one surface as an operation surface, a first adhesive layer that bonds one surface of the first substrate and one surface of the second substrate, A second adhesive layer that bonds the other surface of the second substrate and the other surface of the surface member, and the first substrate, the second substrate, and the surface member are integrated. The first substrate, the second substrate, and the surface member can be an input device that is an optically isotropic translucent material.

As a result, the first base material, the second base material, and the surface member are optically isotropic light-transmitting even when they are arranged on a display device using polarized light such as a liquid crystal display device. Since it is a conductive material, it does not affect the polarization characteristics of the display device screen. Therefore, it is possible to solve the problem that the screen is uneven or dull when viewed through polarized sunglasses. In addition, since it can be divided into the process of forming electrodes on one side of each substrate, in the embodiment of forming electrodes on both sides of the substrate, after the step of forming electrodes on one side, on the other side When the electrode is formed, the problem of damaging one of the electrodes formed in the previous process can be eliminated, and the process in which the problem occurs can be eliminated, so that the yield of the manufacturing process can be stabilized. .
In this invention, it has a protective material that protects the other surface of the first substrate, and a third adhesive layer that bonds the other surface of the first substrate and one surface of the protective material. The first substrate and the protective material are preferably bonded together via the third adhesive layer, and the protective material is preferably an optically isotropic translucent material. Accordingly, when the first electrode pattern is formed on the other surface of the first substrate, it is possible to prevent the first electrode pattern from being damaged during assembly.

Moreover, it has transparent resin which protects the other surface in the said 1st board | substrate, and the said transparent resin may be formed by printing on the other surface in the said 1st board | substrate. In this way, a thinner input device can be realized.
Furthermore, in this invention, it has a 4th adhesion layer which bonds the display apparatus which displays information so that it can visually recognize, and the other surface of the said 1st board | substrate, and the said display apparatus, The display device is integrally bonded via the fourth adhesive layer, and information display of the display device is visually recognized from one surface of the surface member through the first substrate and the second substrate. It can be configured as possible. This makes it possible to reduce the reflection of external light inside the input device and to use an input device with a high transmittance without modifying the display device compatible with polarized sunglasses. It is possible to realize an electro-optical device excellent in the above.

  According to the present invention, there is no influence on the polarization characteristics of the display device screen even when the display device is arranged on a display device using polarized light such as a liquid crystal display device. Therefore, it is possible to solve the problem that the screen is uneven or dull when viewed through polarized sunglasses. Thereby, it is possible to realize an input device excellent in visibility of the display device screen and an electro-optical device using the input device.

It is an exploded perspective view of the input device of a 1st embodiment. It is the fragmentary sectional view which cut | disconnected the input device of 1st Embodiment along the Y1-Y2 direction of FIG. It is a fragmentary sectional view showing a 2nd embodiment. It is a fragmentary sectional view showing a 3rd embodiment. FIG. 10 is a partial cross-sectional view illustrating an electro-optical device according to a fourth embodiment. It is a disassembled perspective view of the input device of 5th Embodiment. It is a fragmentary sectional view showing a 5th embodiment. It is a fragmentary sectional view showing a 6th embodiment. It is a fragmentary sectional view showing a 7th embodiment. FIG. 10 is a partial cross-sectional view illustrating an electro-optical device according to an eighth embodiment.

<First Embodiment>
FIG. 1 is an exploded perspective view of the input device 10 of the present embodiment, and FIG. 2 is a partial cross-sectional view of the input device 10 of the present embodiment cut along the Y1-Y2 direction.

  As shown in FIG. 1, the input device 10 includes a surface member (panel) 20, a sensor substrate 21 having an electrode pattern formed on the surface, a flexible printed circuit board 23, and the like. In all the embodiments described in detail below, the relative positional relationship between the surface member 20 and the sensor substrate 21 is expressed as the vertical direction for convenience.

  The surface member (panel) 20 is formed of a glass substrate. The surface 20a of the surface member 20 is an operation surface, and a decorative layer 24 is provided on the lower surface 20b of the surface member 20, and surrounds the translucent input area 11 and the input area 11 as shown in FIG. It is divided into a colored non-transparent non-input area 12.

  The input device 10 according to the present embodiment is based on a capacitance change that occurs between the upper electrode pattern 13 and the lower electrode pattern 14 disposed in the input area 11 and the finger when the input area 11 that is the operation surface is operated with a finger. Thus, a capacitive touch panel that detects the operation coordinate position of the finger is configured.

  As shown in FIGS. 1 and 2, the sensor substrate 21 includes a base material 30, a plurality of upper electrode patterns 13 formed on the upper surface 30 a of the base material 30, and a plurality of sensors formed on the lower surface 30 b of the base material 30. And the lower electrode pattern 14 of the book. FIG. 1 shows only a part of the upper electrode pattern 13 and the lower electrode pattern 14.

  Both the upper electrode pattern 13 and the lower electrode pattern 14 are made of a transparent conductive material such as ITO (Indium Tin Oxide) on the substrate surface, and an optically isotropic thin film is formed by sputtering or vapor deposition.

  As shown in FIG. 1, the upper electrode pattern 13 is formed extending along, for example, the Y1-Y2 direction on the XY plane, and a plurality of upper electrode patterns 13 are arranged at intervals in the X1-X2 direction. The

  As shown in FIG. 1, each lower electrode pattern 14 is formed to extend along, for example, the X1-X2 direction on the XY plane, and the plurality of lower electrode patterns 14 are spaced apart in the Y1-Y2 direction. Be placed.

  Further, the wide electrode portion 13a of the upper electrode pattern 13 and the wide electrode portion 14a of the lower electrode pattern 14 shown in FIG. 1 are arranged so as not to overlap in a plan view.

  Further, an upper wiring pattern (not shown) is electrically connected to the end portion on the Y2 side of each upper electrode pattern 13, and an upper connection portion 15 is formed at the tip of each upper wiring pattern (see FIG. 1, see FIG. Each upper wiring pattern and each upper connection portion 15 are both provided in the non-input area 12. Each of the upper connecting portions 15 is arranged at a substantially central portion of the Y2 side region 12a of the non-input region 12 with an interval in the X1-X2 direction (see FIG. 1).

  Further, a lower wiring pattern (not shown) is electrically connected to the end of each lower electrode pattern 14 on the X1 side or X2 side. The lower wiring pattern is routed from the X1 side region and the X2 side region of the non-input region 12 to the Y2 side region 12a, and a lower connection portion 17 is formed at the tip of each lower wiring pattern. As shown in FIG. 1, the lower connection portions 17 are arranged at intervals in the X1-X2 direction at both end portions of the central portion where the plurality of upper connection portions 15 are formed.

  As shown in FIG. 2, for example, a transparent (translucent) acrylic resin-based adhesive is present between the surface member 20 disposed on the upper side of the upper electrode pattern 13 and the upper electrode pattern 13 and the base material 30. The layer 31 is interposed, and the surface member 20 and the decorative layer 24 are bonded to the upper electrode pattern 13 and the base material 30. For the adhesive layer 31, for example, an acrylic resin-based adhesive tape can be used.

  As shown in FIG. 1, the flexible printed circuit board 23 has a distal end (a connection side to the upper connection portion 15 and the lower connection portion 17) separated into a central portion 23a and both side end portions 23b and 23b. A plurality of first connection portions 25 are formed in the central portion 23 a of the flexible printed circuit board 23 (only one first connection portion 25 is shown in FIG. 2), and the central portion 23 a overlaps the upper connection portion 15. Thus, each first connection portion 25 and each upper connection portion 15 are electrically connected. Further, as shown in FIG. 2, a plurality of second connection portions 26 are formed at both side end portions 23b of the flexible printed circuit board 23 (only one second connection portion 26 is shown in FIG. 2). The end portions 23 b and 23 b are overlapped under the lower connection portion 17 of the input device 10, and each second connection portion 26 and each lower connection portion 17 are electrically connected.

  Moreover, in the flexible printed circuit board 23, each 1st connection part 25 and each 2nd connection part 26 are electrically connected with the connector 35 installed in the surface of the flexible printed circuit board 23 via the wiring pattern which is not shown in figure. .

  As shown in FIG. 2, the input device 10 of the present embodiment is arranged on the upper surface of the display device 50 that displays information so as to be visible, and the display screen of the display device 50 is visually recognized through the translucent input area 11. . For example, when used in a mobile phone, there has been a demand for an input device 10 that can be operated outdoors and has excellent display screen visibility.

The input device 10 according to the present embodiment includes a base material 30, an upper electrode pattern 13 and a lower electrode pattern 14 provided above and below the base material 30, a surface member 20 that covers the exposed upper electrode pattern 13 side, and an adhesive layer. 31 has a characteristic configuration in that the base member 30 and the surface member 20 are made of an optically isotropic translucent material. Thereby, the reflection of external light at the input device 10 can be reduced, and even when the substrate 30 and the surface are arranged on the display device 50 that displays information using polarized light such as a liquid crystal display device. Since the member 20 is an optically isotropic translucent material, there is no effect on the polarization characteristics of the display device screen. Therefore, it is possible to solve the problem that the screen is uneven or dull when viewed through polarized sunglasses. That is, the input device 10 having excellent visibility of the display device screen can be realized.
A typical example of the optically isotropic translucent material is glass. As optically isotropic translucent materials other than glass, polymethyl methacrylate resin-based polymers, polymethylpentene, triacetyl cellulose, cycloolefin-based polymers, and the like are known. When selecting from these film base materials, triacetyl cellulose and cycloolefin polymers are more preferable in consideration of heat resistance and moisture resistance. The thickness of the film substrate used for the touch panel is generally 200 μm or less.
The acrylic resin adhesive tape used for the adhesive layer 31 is generally about 20 μm to 50 μm thick. Such an adhesive layer 31 can be regarded as an optically isotropic translucent material. Therefore, the optically isotropic configuration in this embodiment is not deteriorated. The thickness of the input device 10 excluding the surface member 20 can be reduced to about 500 μm.
In the capacitive touch panel as described above, since the operation surface does not need to be deformed, a glass substrate can be used for the surface member 20. The thickness of the glass substrate is generally 0.3 mm to 1.1 mm. Moreover, if the hardness of the glass, even if the input area 11 which is the operation surface is operated with a finger, there is no damage.

External light reflection at the interface between the surface member 20 and the air on the operation surface cannot be ignored. When the surface member 20 is a film substrate such as a protective film or a polarizing plate and a glass substrate, the surface reflection of external light is about 4% when the refractive index of the substrate is about 1.5. As a method of reducing the reflectance on this surface, the antireflection treatment of the surface member 20 is effective. As an antireflection treatment method, an expensive antireflection film may be formed. Other antireflection treatment methods include a method of applying an antireflection agent containing fine particles, and a method of making the surface into a fine uneven shape by special processing. These antireflection treatments do not deteriorate the optically isotropic configuration in the present embodiment.
The surface member 20 may not be glass as long as it is an optically isotropic translucent material, but a film substrate or a composite substrate in which a film is bonded to the surface of a glass substrate is a surface member. When used as 20, a hard coat treatment for preventing scratches is generally required from the viewpoint of durability as an operation surface. When the above-described antireflection treatment is performed, both the hard coat treatment and the antireflection treatment are performed. When glass is used, only antireflection treatment is required. Special processing of the glass surface by chemical treatment is a simple and effective antireflection treatment. By doing so, it is possible to reduce the external light reflected and visually recognized on the touch panel surface, and thus it is possible to realize the input device 10 that is more excellent in the visibility of the display device screen.
If there is no air layer inside the touch panel shown in this embodiment, a polarizing plate is not arranged on the upper part of the touch panel or a retardation plate such as a λ / 4 plate is not added, and no additional material is used. The reflected light inside the touch panel can be reduced. However, since the lower part of the touch panel is an interface with the air layer, an antireflection treatment on this surface is more preferable. By so doing, it is possible to reduce the reflection of external light at the interface between the lower part of the touch panel and the air layer, and thus it is possible to realize the input device 10 that is further excellent in the visibility of the display device screen.
Note that the upper electrode pattern 13 and the lower electrode pattern 14 may be any conductive material that has a high transmittance when a touch panel is formed, in addition to ITO. For example, a thin metal wire may be used as the conductive material as long as the visibility of the display device screen is not affected.
<Second Embodiment>
FIG. 3 is a partial cross-sectional view showing the second embodiment. An adhesive layer 31 is interposed between the surface member 20 disposed on the upper side of the upper electrode pattern 13, the upper electrode pattern 13 and the base material 30, and the surface member 20, the upper electrode pattern 13 and the base material 30 are Between the lower electrode pattern 14 and the base material 30, a transparent adhesive layer 32 is interposed between the lower electrode pattern 14 and the base material 30, and the protective material 40, The lower electrode pattern 14 and the substrate 30 are joined.
For the adhesive layers 31 and 32, for example, a translucent acrylic resin adhesive tape can be used. Here, the base material 30, the surface member 20, and the protective material 40 are all made of an optically isotropic translucent material. Therefore, the optically isotropic configuration is not deteriorated also in this embodiment. Generally, the thickness of the protective material 40 is 25 μm to 100 μm. Since the protective material 40 is added to the first embodiment, the constituent material of the touch panel increases and the overall thickness also increases. However, the corrosion of the lower electrode pattern 14 and the display device 50 (not shown) Process failure problems such as disconnection and short circuit of the lower electrode pattern 14 during assembly can be prevented.
Accordingly, the upper electrode pattern 13 can be protected by the surface member 20, and the lower electrode pattern 14 can be appropriately protected by the protective material 40. Thereby, the input device 10 in which the upper electrode pattern 13 and the lower electrode pattern 14 are protected can be realized.

<Third Embodiment>
As shown in FIG. 4 as the third embodiment, a transparent protective film may be formed to protect the lower electrode pattern 14. The transparent resin film 41 can be configured as a coating film that is printed and applied from the surface of the lower electrode pattern 14 to the surface of the substrate 30 (the lower surface 30b). Since it is formed in the input region 11, it needs to be translucent. The resin formed by printing is usually an optically isotropic material. Therefore, the optically isotropic configuration is not deteriorated also in this embodiment. The transparent resin film 41 desirably has a refractive index substantially the same as that of the base material 30 and desirably has the hardness of a hard coat film.
As shown in FIG. 4, the surface (lower surface) 41a of the transparent resin film 41 can be formed on a flat surface. Moreover, the maximum film thickness of the transparent resin film 41 can be thinly formed to about several μm to 20 μm. Thereby, the upper electrode pattern 13 can be protected by the surface member 20, and the lower electrode pattern 14 can be appropriately protected by the transparent resin film 41. Therefore, the thinner input device 10 in which the upper electrode pattern 13 and the lower electrode pattern 14 are protected can be realized.
In any of the above embodiments, in the configuration in which the air layer 51 is interposed between the input device 10 and the display device 50 as shown in FIG. 2, the interface member exposed to the air layer 51 is subjected to antireflection treatment. Although it is desirable to do so, it is preferable to balance the performance with external light reflection because it increases the number of processes and costs. Regardless of the antireflection treatment at the interface with the air layer 51, as an effect of the present embodiment, even when the display device 50 is arranged to overlap with the display device 50 that displays information using polarized light such as a liquid crystal display device, the display device There is no effect on the polarization characteristics of the screen.
<Fourth Embodiment>
Further, the fourth embodiment as shown in FIG. 5 includes the input device 10 of FIG. 2 and the display device 50 (illustrated as a component independent of the structure) having excellent visibility in polarized sunglasses. This is an electro-optical device 60 that is integrated with the adhesive layer 33 and does not include the air layer 51. In particular, when the outermost surface of the display device 50 is a polarizing film member that has not undergone antireflection treatment, reflection occurs at about 4% at the interface between the member surface and the air layer 51, but the refractive index is close. If the input device 10 and the display device 50 are joined and integrated by the adhesive layer 33, reflection at the interface is almost eliminated, and thus a higher antireflection effect can be obtained.
By doing so, it is possible to reduce the reflection of outside light and to use the input device 10 having a high transmittance without modifying the display device 50 that supports polarized sunglasses. The electro-optical device 60 excellent in the above can be realized.

In the configuration of the input device 10 shown in the second embodiment and the third embodiment, the input device 10 and the display device 50 may be integrated with the adhesive layer 33. This can prevent the lower electrode pattern 14 from being damaged during assembly.
<Fifth Embodiment>
FIG. 6 is an exploded perspective view of the input device 110 according to the fifth embodiment, and FIG. 7 is a partial cross-sectional view of the input device 110 according to the fifth embodiment.

As shown in FIG. 6, the input device 110 includes a surface member (panel) 120, sensor substrates 121 and 122 having an upper electrode pattern 113 and a lower electrode pattern 114 formed on the surface, a flexible printed circuit board 123, and the like. Composed. As shown in FIGS. 6 and 7, the sensor substrate 121 includes a base material 142 and a plurality of upper electrode patterns 113 formed on the upper surface 142 a of the base material 142. The sensor substrate 122 includes a plurality of lower electrode patterns 114 formed on the upper surface 143a of the base material 143.
The base materials 142 and 143 and the surface member 120 are made of an optically isotropic translucent material. Thereby, even when it is placed on a display device 50 (not shown) that displays information using polarized light such as a liquid crystal display device, the polarization characteristics of the display device screen are not affected. Therefore, it is possible to solve the problem that the screen is uneven or dull when viewed through polarized sunglasses. That is, the input device 110 having excellent visibility of the display device screen can be realized.
Here, the sensor substrate 121 may have the upper electrode pattern 113 formed on any one surface of the base material 142. In the sensor substrate 122, the lower electrode pattern 114 may be formed on any one surface of the base material 143.
<Sixth Embodiment>
When the lower electrode pattern 114 is formed on the lower surface 143b of the substrate 143, it is desirable to cover it with a protective material. FIG. 8 shows a sixth embodiment, in which a protective material 144 is attached with an adhesive layer 133. The upper electrode pattern 113 may be formed on any surface of the base material 142. A transparent adhesive layer 133 is interposed between the protective material 144 disposed below the lower electrode pattern 114, the lower electrode pattern 114, and the base material 143. The protective material 144, the lower electrode pattern 114, and the base The material 143 is joined.
For the adhesive layers 131, 132, and 133, a translucent acrylic resin adhesive tape can be used. Here, the base materials 142 and 143, the surface member 120, and the protective material 144 are all made of an optically isotropic light-transmitting material. Therefore, the optically isotropic configuration is not deteriorated also in this embodiment. Generally, the thickness of the protective material 144 is 25 μm to 100 μm. Since the protective material 144 is added to the fifth embodiment, the constituent material of the touch panel increases and the overall thickness also increases. However, the corrosion of the lower electrode pattern 114 and the display device 150 (not shown) Process failure problems such as disconnection and short circuit of the lower electrode pattern 114 during assembly can be prevented.
Accordingly, a configuration in which the lower electrode pattern 114 is appropriately protected by the protective material 144 is added to the configuration in which the upper electrode pattern 113 is protected. Therefore, the input device 110 in which the upper electrode pattern 113 and the lower electrode pattern 114 are protected can be realized.
<Seventh Embodiment>
As shown in FIG. 9 as the seventh embodiment, a transparent protective film may be formed to protect the lower electrode pattern 114. The transparent resin film 141 can be configured as a coating film applied by printing from the surface of the lower electrode pattern 114 to the surface (lower surface 143b) of the base material 143. Since it is formed in the input region 111, it needs to be translucent. The resin formed by printing is usually an optically isotropic material. Therefore, the optically isotropic configuration is not deteriorated also in this embodiment. Thereby, the lower electrode pattern 114 can be appropriately protected by the transparent resin film 141. The transparent resin film 141 desirably has a refractive index substantially the same as that of the base materials 142 and 143, and desirably has the hardness of a hard coat film.
In addition, the maximum film thickness of the transparent resin film 141 can be as thin as several μm to 20 μm and can be formed flat. As a result, a configuration in which the lower electrode pattern 114 is appropriately protected by the transparent resin film 141 is added to the configuration in which the upper electrode pattern 113 is protected. Therefore, a thin input device 110 in which the upper electrode pattern 113 and the lower electrode pattern 114 are protected can be realized.
<Eighth Embodiment>
FIG. 10 shows the eighth embodiment. The input device 110 according to the fifth embodiment and a display device 50 (shown as a component independent of the structure) having excellent visibility in polarized sunglasses are shown. The electro-optical device 160 is integrated with the adhesive layer 134 and does not include the air layer 51. In particular, when the outermost surface of the display device 50 is a polarizing film member that has not been subjected to antireflection treatment, an antireflection effect at the interface can be obtained.
By doing so, it is possible to reduce the reflection of external light and to use the input device 110 having a high transmittance without modifying the display device 50 that supports polarized sunglasses. The electro-optical device 160 excellent in the above can be realized.

In the configuration of the input device 110 shown in the sixth embodiment and the seventh embodiment, the input device 110 and the display device 50 may be integrated with the adhesive layer 134. This can prevent the lower electrode pattern 114 from being damaged during assembly.
In the above embodiments, the surface member and the sensor substrate are described as being bonded via an adhesive layer, but the same effect can be obtained even in an electro-optical device in which a display device and a sensor substrate are bonded. Is obtained. When the display member is installed on the operation surface and an air layer is included between the display members, an antireflection treatment may be performed on the interface with the air layer. It is also possible to bond the display member and the sensor substrate integrated with the display device through an adhesive layer.

10, 110 Input device 11, 111 Input region 12, 112 Non-input region 12a, 112a Y2 side region 13, 113 Upper electrode pattern 14, 114 Lower electrode pattern 15, 115 Upper connection portion 17, 117 Lower connection portion 20, 120 Surface Member 21, 121, 122 Sensor board 23, 123 Flexible printed circuit board 24, 124 Decoration layer 25 First connection part 26 Second connection part 30, 142, 143 Base material 31, 32, 33, 131, 132, 133, 134 Adhesive layer 35, 135 Connector 40, 144 Protective material 41, 141 Transparent resin film 50 Display device 60, 160 Electro-optical device

Claims (8)

A substrate in which a first electrode pattern is formed on one surface of a planar substrate and a second electrode pattern is formed on the other surface;
A surface member whose one surface is an operation surface;
A first adhesive layer that bonds one surface of the substrate and the other surface of the surface member;
The substrate and the surface member are bonded together via the first adhesive layer,
The input device, wherein the base member and the surface member are optically isotropic translucent materials. A protective material for protecting the other surface of the substrate;
A second adhesive layer that bonds the other surface of the substrate and one surface of the protective material;
The protective material and the substrate are bonded together via the second adhesive layer,
The input device according to claim 1, wherein the protective material is an optically isotropic translucent material. A transparent resin for protecting the other surface of the substrate;
The input device according to claim 1, wherein the transparent resin is formed by printing on the other surface of the substrate. A first substrate having a first electrode pattern formed on any surface of a planar first substrate;
A second substrate having a second electrode pattern formed on any surface of the planar second substrate;
A surface member whose one surface is an operation surface;
A first adhesive layer that bonds one surface of the first substrate and one surface of the second substrate;
A second adhesive layer that bonds the other surface of the second substrate and the other surface of the surface member;
The first substrate, the second substrate and the surface member are bonded together,
The input device, wherein the first base material, the second base material, and the surface member are optically isotropic translucent materials. A protective material for protecting the other surface of the first substrate;
A third adhesive layer that bonds the other surface of the first substrate and the one surface of the protective material;
The first substrate and the protective material are bonded together via the third adhesive layer,
The input device according to claim 4, wherein the protective material is an optically isotropic translucent material. A transparent resin for protecting the other surface of the first substrate;
The input device according to claim 4, wherein the transparent resin is formed by printing on the other surface of the first substrate. A display device for displaying information so as to be visible;
A third adhesive layer that bonds the other surface of the substrate and the display device;
The substrate and the display device are bonded together via the third adhesive layer,
The electro-optical device using the input device according to claim 1, wherein information display of the display device is visible through the substrate from one surface of the surface member. A display device for displaying information so as to be visible;
A fourth adhesive layer that bonds the other surface of the first substrate and the display device;
The first substrate and the display device are integrally bonded via the fourth adhesive layer,
5. The electro-optical device using an input device according to claim 4, wherein information display of the display device is visible from one surface of the surface member through the first substrate and the second substrate. .

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