WO2017065157A1 - 入力装置および入力装置の製造方法 - Google Patents
入力装置および入力装置の製造方法 Download PDFInfo
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- WO2017065157A1 WO2017065157A1 PCT/JP2016/080197 JP2016080197W WO2017065157A1 WO 2017065157 A1 WO2017065157 A1 WO 2017065157A1 JP 2016080197 W JP2016080197 W JP 2016080197W WO 2017065157 A1 WO2017065157 A1 WO 2017065157A1
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- sensor film
- layer
- curved surface
- input device
- extension
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- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
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- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
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Definitions
- the present invention relates to an input device and a method for manufacturing the input device, and more particularly to an input device provided with a sensor film having a two-dimensional or three-dimensional curved surface and a method for manufacturing the input device.
- a translucent input device is arranged in front of a display panel such as a color liquid crystal panel.
- This input device is called a touch panel.
- a capacitance is formed between the electrodes, and the coordinates of the approach position of the finger are determined from the change in charge movement when the finger of the person approaches.
- a capacitive sensor is used.
- Patent Document 1 discloses an external case for electronic equipment provided with a sensor film having a three-dimensional curved surface.
- a base made of a synthetic resin has a first film having a predetermined color (coloring) or pattern, and a second film having an electrode portion and a conductive pattern. And between.
- Patent Document 1 as a method of manufacturing an outer case for electronic equipment, a first film and a second film are arranged in a mold, and a base is provided between the first film and the second film.
- the process which makes the 1st film and the 2nd film integrate with a base by pouring the molten resin used as this and solidifying the molten resin is disclosed.
- a pre-process for installing the first film and the second film in the mold it is disclosed to perform heating by applying heat to each film.
- Patent Document 2 discloses a three-dimensional curved touch panel including a transparent base sheet, a main electrode layer formed using conductive ink, and an auxiliary electrode layer formed using conductive ink. Has been.
- the three-dimensional curved touch panel described in Patent Document 2 is a heating apparatus in which a laminate of three layers (base sheet, main electrode layer, auxiliary electrode layer), which was originally flat, is arranged in a mold having a three-dimensional curved surface. It is formed by softening and deforming along the three-dimensional curved surface of the mold.
- the extension state of the sensor film depends on the total extension amount of the entire touch panel having a three-dimensional curved surface.
- the curvature radius of the curved surface of the detection region is larger than the region constituting the sensor (non-detection region: for example, a frame portion). If a curved surface having a small curvature radius (minimum curvature radius) exists, the total extension amount of the entire touch panel becomes relatively long. Therefore, if there is a curved surface having a minimum radius of curvature in the non-detection area, the detection area of the sensor film may be affected by the tensile stress due to the extension of the non-detection area, and may extend beyond the allowable extension amount and break. is there. Therefore, there is a problem that the shape of the touch panel is restricted by the amount of expansion of a curved surface having a minimum radius of curvature.
- an end portion of molding such as IML remains inside the touch panel so as to cross the touch panel.
- An end portion of molding such as IML is a portion where the composition of the material changes, and a portion where various stresses applied to the touch panel concentrate. If such a portion exists so as to cross the touch panel, the strength of the touch panel is significantly reduced.
- This invention is for solving the said conventional subject, controls the expansion
- An object of the present invention is to provide an input device and a method for manufacturing the input device.
- the input device includes a first curved surface having translucency provided in a detection region constituting a sensor, and a curvature smaller than a radius of curvature of the first curved surface provided in a non-detection region other than the detection region.
- a second curved surface having a radius; a sensor film having a radius; a resin layer provided on the sensor film and formed of a material containing a light-transmitting resin; and provided in the detection region of the sensor film.
- an extension suppressing layer that suppresses the extension amount of the detection region of the sensor film to be smaller than the extension amount of the non-detection region of the sensor film.
- the extension suppressing layer is provided in the detection region of the sensor film, and the extension amount of the detection region of the sensor film when the resin layer is molded with the mold is set in the non-detection region of the sensor film. Keep it smaller than the amount of extension. Therefore, even if the second curved surface having a smaller radius of curvature than the radius of curvature of the first curved surface provided in the detection region of the sensor film exists in the non-detection region of the sensor film, the extension of the detection region of the sensor film The amount is smaller than the extension amount of the non-detection area of the sensor film.
- the extension amount of the detection region of the sensor film can be kept within the allowable extension amount range.
- extension location of the sensor film which has a two-dimensional or three-dimensional curved surface can be controlled partially, and it can suppress that the detection area
- the sensor film includes a first surface formed in a convex three-dimensional curved surface, and a second surface located on the opposite side of the first surface, and the resin layer Is provided on the first surface side, and the extension suppressing layer may be provided on at least one of the first surface side and the second surface side.
- the sensor film includes a first surface formed as a convex three-dimensional curved surface, and a second surface located on the opposite side of the first surface, and the expansion suppression.
- the layer may be provided on the second surface side, and the resin layer may be provided on the side opposite to the sensor film as viewed from the elongation suppressing layer.
- a resin layer is provided on the second surface side of the sensor film on which the elongation suppressing layer is formed. That is, the sensor film exists on the front surface of the input device rather than the resin layer. Therefore, even if the resin layer is damaged, scattering of the resin layer can be suppressed.
- the sensor film may have a translucent film-like base material, and the material of the extension suppressing layer may be the same as the base material. According to this, the expansion
- the extension suppressing layer may have the same thickness as the base material. According to this, the extension amount of the detection region of the sensor film can be suppressed to about 50 percent (%) as compared with the case where the extension suppressing layer is not provided.
- the sensor film is a first sensor film
- the extension suppressing layer is a first extension suppressing layer
- a third curved surface provided in the detection region and having translucency, and a fourth curved surface provided in the non-detection region and having a curvature radius smaller than that of the third curved surface.
- the second sensor film is provided in the detection area of the second sensor film, and the extension amount of the detection area of the second sensor film is greater than the extension amount of the non-detection area of the second sensor film.
- a second elongation suppressing layer that is further reduced, and the resin layer may be provided between the first sensor film and the second sensor film.
- the plurality of sensor films can be accommodated within the respective allowable extension amounts.
- extension location of a some sensor film can be controlled partially, and it can suppress that the detection area
- the first sensor film includes a film-shaped first base material having translucency, and the material of the first elongation suppression layer is the first base material.
- the second sensor film has a light-transmitting film-like second base material, and the second stretch suppression layer is made of the material of the second base material. It may be the same.
- extension suppression layer can protect the detection area
- extension suppression layer can protect a 2nd sensor film.
- the base material of the first sensor film and the stretchability or curability of the first stretch suppression layer are the same, and the stretchability or cure of the base material of the second sensor film and the second stretch suppression layer are the same. Since the properties and the like are the same, the steps of forming the first sensor film, the first extension suppressing layer, the second sensor film, and the second extension suppressing layer can be controlled relatively easily.
- the thickness of the first elongation suppressing layer is the same as the thickness of the first substrate, and the thickness of the second elongation suppressing layer is the second substrate. It may be the same as the thickness.
- the method for manufacturing an input device includes a step of forming a sensor film having a detection region constituting a sensor and a non-detection region other than the detection region, and the sensor film in the detection region of the sensor film.
- the second curved surface having a radius of curvature smaller than the radius of curvature of the first curved surface provided in the detection region of the sensor film is present in the non-detection region of the sensor film.
- the extension amount of the detection region of the sensor film can be kept within the allowable extension amount range.
- extension location of the sensor film which has a two-dimensional or three-dimensional curved surface can be controlled partially, and it can suppress that the detection area
- the sensor film includes a first surface formed in a convex curved surface, and a second surface located on the opposite side to the first surface, and the resin
- the step of forming a layer includes the step of providing the resin layer on the first surface side
- the step of forming the elongation suppressing layer includes the step of forming at least one of the first surface side and the second surface side.
- the sensor film includes a first surface formed on a convex curved surface, and a second surface located on the opposite side of the first surface, and the extension.
- the step of forming the suppression layer includes the step of providing the extension suppression layer on the second surface side, and the step of forming the resin layer includes the resin on the side opposite to the sensor film as viewed from the extension suppression layer. You may have the process of providing a layer. According to this, before forming the resin layer, by providing an extension suppressing layer in the detection region of the sensor film, the extension part of the sensor film having a two-dimensional or three-dimensional curved surface is partially controlled, and the sensor film It is possible to suppress the destruction of the detection area.
- a step of heating the sensor film to form the first curved surface and the second curved surface may be provided. According to this, even if the second curved surface having a curvature radius smaller than the curvature radius of the first curved surface provided in the detection region of the sensor film exists in the non-detection region of the sensor film, the detection of the sensor film It is possible to manufacture an input device that can suppress the extension amount of the region to be smaller than the extension amount of the non-detection region of the sensor film.
- the sensor film on which the elongation suppressing layer is formed is heated to form the first curved surface and the second curved surface. It can be accurately installed inside. Thereby, the molten resin used as a resin layer can reach every corner in the cavity, and the degree of completion at the time of molding can be increased. That is, it is possible to suppress the generation of defective products and improve the quality of the input device.
- the sensor film is a first sensor film
- the extension suppression layer is a first extension suppression layer
- the detection region and the non-detection region are And forming a second sensor film different from the first sensor film, and an amount of extension of the detection area of the second sensor film in the detection area of the second sensor film.
- Forming a second extension suppressing layer that is suppressed to be smaller than the extension amount of the non-detection region of the second sensor film, and the step of forming the resin layer includes the first sensor film and the Providing the resin layer between the second sensor film, forming a third curved surface in the detection area of the second sensor film, and forming a front surface in the non-detection area of the second sensor film; Forming a fourth curved surface having a third radius of curvature smaller than the radius of curvature of the curved surface may have a.
- the plurality of sensor films can be accommodated within the respective allowable extension amounts.
- extension location of a some sensor film can be controlled partially, and it can suppress that the detection area
- the 2nd curved surface which has a curvature radius smaller than the curvature radius of the 1st curved surface provided in the detection area of the 1st sensor film exists in the non-detection area of the 1st sensor film.
- an input device that can suppress the extension amount of the detection region of the first sensor film to be smaller than the extension amount of the non-detection region of the first sensor film. Further, even if a fourth curved surface having a radius of curvature smaller than the radius of curvature of the third curved surface provided in the detection region of the second sensor film exists in the non-detection region of the second sensor film, It is possible to manufacture an input device that can suppress the extension amount of the detection region of the second sensor film to be smaller than the extension amount of the non-detection region of the second sensor film.
- the first sensor film in which the first extension suppressing layer is formed and the first sensor film in which the second extension suppressing layer is formed.
- the second sensor film is heated to form the first curved surface, the second curved surface, the third curved surface, and the fourth curved surface, the first sensor film, the first elongation suppressing layer, the second curved surface,
- the sensor film and the second elongation suppressing layer can be accurately placed in the mold.
- the molten resin used as a resin layer can reach every corner in the cavity, and the degree of completion at the time of molding can be increased. That is, it is possible to suppress the generation of defective products and improve the quality of the input device.
- the expansion location of the sensor film which has a two-dimensional or three-dimensional curved surface is partially controlled, and the input device which can suppress that the detection area
- FIG. 2 is a schematic cross-sectional view of the input device according to the present embodiment, and is a cross-sectional view taken along line AA shown in FIG. It is a flowchart which illustrates the manufacturing method of the input device which concerns on this embodiment. It is a schematic cross section which illustrates the manufacturing method of the input device which concerns on this embodiment.
- FIG. 5 is a schematic cross-sectional view of another input device according to the present embodiment, and corresponds to a cross-sectional view taken along line AA shown in FIG. It is a flowchart which illustrates other manufacturing methods of the input device concerning this embodiment. It is a schematic cross section which illustrates other manufacturing methods of the input device which concerns on this embodiment.
- FIG. 2 is a schematic cross-sectional view of the input device according to the present embodiment, and is a cross-sectional view taken along line AA shown in FIG.
- FIG. 5 is a schematic cross-sectional view of another input device according to the present embodiment, and corresponds to a cross-sectional view taken along line
- FIG. 10 is a schematic cross-sectional view of still another input device according to the present embodiment, and corresponds to a cross-sectional view taken along line AA shown in FIG. It is a flowchart which illustrates further another manufacturing method of the input device concerning this embodiment.
- FIG. 10 is a schematic cross-sectional view illustrating still another method for manufacturing the input device according to the embodiment.
- FIG. 10 is a schematic cross-sectional view of still another input device according to the present embodiment, and corresponds to a cross-sectional view taken along line AA shown in FIG. It is a flowchart which illustrates further another manufacturing method of the input device concerning this embodiment.
- FIG. 10 is a schematic cross-sectional view illustrating still another method for manufacturing the input device according to the embodiment.
- FIG. 10 is a schematic cross-sectional view illustrating still another method for manufacturing the input device according to the embodiment.
- FIG. 1 is a perspective view illustrating an input device according to this embodiment.
- FIG. 2 is a schematic cross-sectional view of the input device according to the present embodiment, and is a cross-sectional view taken along line AA shown in FIG.
- the input device according to the present embodiment is, for example, a touch panel having a curved surface.
- the input device 1 includes a sensor film 10, a resin layer 30, a decorative layer 50, and an elongation suppressing layer 70.
- the sensor film 10 has translucency and has a film-like transparent substrate such as polyethylene terephthalate (PET).
- PET polyethylene terephthalate
- transparent and translucent refer to a state where the visible light transmittance is 50% or more (preferably 80% or more). Furthermore, the haze value is preferably 6% or less.
- light shielding and “light shielding” refer to a state where the visible light transmittance is less than 50% (preferably less than 20%).
- the sensor film 10 has a first surface 10a that is a curved surface.
- the first surface 10a is, for example, a convex three-dimensional curved surface.
- the first surface 10a side is a three-dimensional curved surface that is convex in both the vertical and horizontal directions.
- the second surface 10b is located on the opposite side of the sensor film 10 from the first surface 10a. Since the sensor film 10 has a uniform thickness, the second surface 10b is also a three-dimensional curved surface similar to the first surface 10a.
- the first surface 10a and the second surface 10b may have other shapes such as a two-dimensional curved surface and a concave shape.
- the normal direction to the curved surface of the first surface 10a is referred to as a thickness direction or a stacking direction.
- An electrode layer is provided in a region (detection region) VA constituting the sensor in the sensor film 10.
- the detection area VA is an area where an operation can be performed with an operating body such as a finger.
- the electrode layer is omitted in FIG.
- a lead-out wiring 42 is provided in an area (non-detection area) NA of the sensor film 10 other than the area constituting the sensor.
- the non-detection area NA is the periphery (outside) of the detection area VA, and is a frame-shaped decoration area (area covered with the decoration layer 50).
- the lead-out wiring 42 includes a flexible wiring board extending outward from the sensor film 10 as shown in FIG. 1 and wiring connected to the electrode layer and routed outside the detection area VA of the sensor film 10. .
- the electrode layer is provided on at least one of the first surface 10 a of the sensor film 10 and the second surface 10 b of the sensor film 10.
- the electrode layer has translucency and is one of detection electrodes in the touch sensor.
- ITO Indium Tin Oxide
- translucent organic conductive material translucent organic conductive material, metal nanowire, or the like is used.
- the input device 1 detects the contact position by detecting a change in capacitance between the plurality of electrode layers when a finger or the like approaches the sensor film 10.
- the resin layer 30 is provided on the sensor film 10 so as to cover the detection area VA and the non-detection area NA.
- the resin layer 30 is translucent and is formed by an injection molding method in which a material containing synthetic resin such as molten polycarbonate or acrylic is injected into a mold.
- the decoration layer 50 is provided on the first surface 30a of the resin layer 30 and covers the non-detection area NA.
- the decorative layer 50 may be provided on the second surface 30b of the resin layer 30 and may cover the non-detection area NA.
- the decorative layer 50 has a light shielding property. Therefore, the wiring routed outside the detection area VA of the sensor film 10 (part of the extraction wiring 42) cannot be seen from the first surface 30a side of the resin layer 30.
- the elongation suppression layer 70 is provided in the detection area VA on the second surface 10b side of the sensor film 10.
- the elongation suppressing layer 70 may be provided in the detection region VA on the first surface 10 a side of the sensor film 10 like the two-dot chain elongation suppressing layer 70 illustrated in FIG. 2. That is, the elongation suppressing layer 70 is provided on at least one of the second surface 10 b side of the sensor film 10 and the first surface 10 a side of the sensor film 10.
- the elongation suppressing layer 70 is formed on the second surface 10b of the sensor film 10 by bonding using an adhesive or the like, application, heat fusion, or the like.
- the material of the elongation suppressing layer 70 is not particularly limited.
- examples of the material of the extension suppressing layer 70 include a thermosetting resin and a thermoplastic resin having translucency, and a thermosetting resin and a thermoplastic resin having a relatively high crosslinkability.
- the material of the elongation suppressing layer 70 the same material as the material of the base material of the sensor film 10 is more preferably used.
- the stretch suppression layer 70 can protect the detection region VA of the sensor film 10.
- the sensor film 10 of the input device 1 has a three-dimensional curved surface (first curved surface) in the detection area VA and three-dimensional of the detection area VA in the non-detection area NA.
- the detection area of the sensor film 10 is sufficiently gentle ( Even if it has a curved surface (the first curved surface) having a sufficiently large radius of curvature, it may be affected by the tensile stress due to the expansion of the minimal radius of curvature region LA, and may be expanded beyond the allowable elongation amount and destroyed.
- the input device 1 includes the elongation suppressing layer 70.
- the extension suppressing layer 70 is provided on the second surface 10b of the sensor film 10, and the extension amount of the detection area VA of the sensor film 10 when the resin layer 30 is molded with a mold is set to the non-detection area NA of the sensor film 10. Keep it smaller than the amount of extension.
- the extension amount of the detection area VA of the sensor film 10 is not detected in the non-detection area of the sensor film 10. It is smaller than the elongation amount of NA. In other words, the extension amount of the non-detection area NA of the sensor film 10 is larger than the extension amount of the detection area VA of the sensor film 10. Therefore, the extension amount of the detection area VA of the sensor film 10 can be kept within the allowable extension amount range.
- extension location of the sensor film 10 which has a two-dimensional or three-dimensional curved surface can be controlled partially, and it can suppress that the detection area VA of the sensor film 10 destroys. Therefore, it can be solved that the shape of the input device 1 is restricted by the extension amount of the minimum curvature radius region LA, and the input device 1 having a desired three-dimensional curved surface can be realized.
- the input device 1 has a structure divided into a plurality of sensor blocks
- an independent extension suppression layer 70 for each block by forming an independent extension suppression layer 70 for each block, a curved surface (first curvature) between each sensor block (first 2 curved surfaces) can be realized.
- a polyhedron shape in which a ridge line is provided around like a box shape can be cited.
- FIG. 3 is a flowchart illustrating the method for manufacturing the input device according to this embodiment.
- FIG. 4 is a schematic cross-sectional view illustrating the method for manufacturing the input device according to this embodiment.
- the manufacturing method of the input device 1 includes the formation of the sensor film 10 (Step S ⁇ b> 101), the formation of the elongation suppressing layer 70 (Step S ⁇ b> 102), and the formation of the resin layer 30 ( Step S103) and formation of the decoration layer 50 (Step S104).
- a transparent substrate 101 is prepared as shown in FIG.
- a film-like substrate such as polyethylene terephthalate (PET) is used.
- PET polyethylene terephthalate
- an electrode layer and a lead wiring 42 are formed on at least one of the first surface 101a and the second surface 101b of the transparent substrate 101.
- the electrode layer and the lead wiring 42 are formed by photolithography, etching, and screen printing.
- an ITO layer is formed on the surface of the transparent substrate 101 by sputtering, and a resist is formed thereon. After patterning by exposing and developing the resist, the ITO layer is etched. Thereafter, the resist is peeled off. Thereby, an electrode layer made of an ITO layer patterned on at least one of the first surface 101a and the second surface 101b of the transparent substrate 101 is formed. In this way, the sensor film 10 is formed.
- the extension suppressing layer 70 is formed on the second surface 10b of the sensor film 10 as shown in FIG.
- the elongation suppressing layer 70 is formed on the second surface 10b of the sensor film 10 by bonding using an adhesive, application, or the like.
- the elongation suppressing layer 70 it is preferable to use a transparent material having an elongation equal to or less than that of the material of the transparent substrate 101.
- the material of the elongation suppressing layer 70 include polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and translucent polyimide.
- the material of the elongation suppressing layer 70 may be the same as the material of the transparent substrate 101, and the thickness of the elongation suppressing layer 70 may be substantially the same as the thickness of the transparent substrate 101.
- the amount of extension of the detection region VA of the sensor film 10 Can be suppressed to about 50 percent (%) compared to the case where the elongation suppressing layer 70 is not provided. It should be noted that the extension amount of the detection region VA of the sensor film 10 can be adjusted not only by changing the material of the extension suppressing layer 70 but also by changing the thickness of the extension suppressing layer 70.
- the resin layer 30 shown in step S103 it forms in the sensor film 10 by bonding, application
- the formed elongation suppressing layer 70 is inserted into an injection mold, and a material containing a translucent resin is poured into the mold to form a resin layer 30 as shown in FIG. That is, the laminated body of the sensor film 10, the expansion
- IML in-mold lamination
- the radius of curvature of the three-dimensional curved surface (first curved surface) of the detection region VA outside the detection region VA (non-detection region NA) of the sensor film 10 is smaller.
- the detection region of the sensor film 10 is affected by the tensile stress due to the expansion of the minimal curvature radius region LA in the IML, and the allowable elongation amount. May also stretch and break.
- the stretch suppression layer 70 is formed on the second surface 10b of the sensor film 10, and the sensor film 10, the stretch suppression layer 70, and the resin layer are formed by IML. 30 and the laminated body.
- the detection area VA of the sensor film 10 The extension amount can be suppressed to be smaller than the extension amount of the non-detection area NA of the sensor film 10.
- extension location of the sensor film 10 which has a two-dimensional or three-dimensional curved surface can be controlled partially, and it can suppress that the detection area VA of the sensor film 10 destroys. Therefore, it can be solved that the shape of the input device 1 is restricted by the extension amount of the minimum curvature radius region LA, and the input device 1 having a desired three-dimensional curved surface can be realized.
- the decoration layer 50 is formed on the first surface 30a of the resin layer 30 so as to cover the non-detection area NA as shown in FIG.
- the decorative layer 50 is a light-shielding material and is formed around the detection area VA by printing or coating.
- the decorative layer 50 may be formed by sputtering, vapor deposition, or the like.
- Preforming may be performed by heating the sensor film 10 and the elongation suppressing layer 70 to a predetermined temperature.
- the sensor film 10 and the extension suppressing layer 70 are preformed to form a laminate of the sensor film 10 and the extension suppressing layer 70. Good. In this case, the sensor film 10 hardly stretches during the molding of the resin layer 30 shown in step 103.
- the molten resin used as the resin layer 30 can reach every corner in the mold, and the degree of completion at the time of molding can be increased. That is, the generation of defective products can be suppressed and the quality of the input device 1 can be improved.
- the elongation suppressing layer 70 may be formed on the first surface 10a side of the sensor film 10 like the two-dot chain elongation suppressing layer 70 shown in FIG. That is, in step S ⁇ b> 102, the elongation suppressing layer 70 is formed on at least one of the second surface 10 b side of the sensor film 10 and the first surface 10 a side of the sensor film 10. In the case where the elongation suppressing layer 70 is formed on the first surface 10a side of the sensor film 10, the elongation suppressing layer 70 is formed as shown by a two-dot chain line shown in FIG.
- FIG. 5 is a schematic cross-sectional view of another input device according to the present embodiment, and corresponds to a cross-sectional view taken along line AA shown in FIG.
- the input device 1 ⁇ / b> A according to the present embodiment includes a sensor film 10, a resin layer 30, a decoration layer 50, and an extension suppression layer 70.
- the input device In contrast to the decorative layer 50 of the input device 1 described above with reference to FIGS. 1 and 2 being provided on the first surface 30a of the resin layer 30 so as to cover the non-detection area NA, the input device according to the present embodiment.
- the decorative layer 50 of 1A is provided in the non-detection area NA of the first surface 10a of the sensor film 10.
- the sensor film 10 of the input device 1A according to the present embodiment has a three-dimensional curved surface (first curved surface) in the detection area VA and has a three-dimensional curved surface (first curved surface) in the detection area VA in the non-detection area NA.
- second curved surface having a curvature radius (minimum curvature radius) smaller than the curvature radius (minimum curvature radius region LA).
- minimum curvature radius minimum curvature radius region LA.
- the structures and materials of the other layers are the same as the structures and materials of the layers of the input device 1 described above with reference to FIGS. 1 and 2.
- the extension suppressing layer 70 may be provided on the first surface 10a side of the sensor film 10 like the extension suppressing layer 70 of the two-dot chain line shown in FIG. Good. That is, the elongation suppressing layer 70 is provided on at least one of the second surface 10 b side of the sensor film 10 and the first surface 10 a side of the sensor film 10.
- the sensor film 10 After the decoration layer 50 is formed on the sensor film 10, the sensor film 10, the elongation suppressing layer 70, the decoration layer 50, and the resin layer 30 are formed by IML.
- a laminate can be constructed. This will be further described with reference to the drawings.
- FIG. 6 is a flowchart illustrating another method for manufacturing the input device according to this embodiment.
- FIG. 7 is a schematic cross-sectional view illustrating another method for manufacturing the input device according to this embodiment.
- the manufacturing method of the input device 1 ⁇ / b> A includes the formation of the sensor film 10 (Step S ⁇ b> 201), the formation of the elongation suppressing layer 70 (Step S ⁇ b> 202), and the formation of the decoration layer 50. (Step S203) and formation of the resin layer 30 (Step S204). In addition, formation of the decoration layer 50 (step S203) may be performed before formation of the expansion
- step S201 and step S202 are the same as the manufacturing methods of step S101 and step S102 described above with reference to FIGS.
- the decoration layer 50 is formed in the non-detection area NA on the first surface 10a side of the sensor film 10, as shown in FIG.
- the decorative layer 50 is a light-shielding material and is formed around the detection area VA by printing or coating.
- the decorative layer 50 may be formed by sputtering, vapor deposition, or the like.
- step S202 the elongation suppressing layer 70 is formed on at least one of the second surface 10b side of the sensor film 10 and the first surface 10a side of the sensor film 10.
- the extension suppressing layer 70 is formed after the decoration layer 50 is formed.
- extension suppression layer 70 formed in the sensor film 10 were carried out.
- the decorative layer 50 is inserted into an injection mold, and a material containing a synthetic resin having translucency is poured into the mold to form a resin layer 30 as shown in FIG. That is, a laminated body of the sensor film 10, the stretch suppression layer 70, the decoration layer 50, and the resin layer 30 is configured by IML.
- the sensor film 10, the stretch suppression layer 70, and the decoration layer 50 are formed by IML after the stretch suppression layer 70 and the decoration layer 50 are formed on the sensor film 10.
- the laminated body of the resin layer 30 can be comprised.
- the decorative layer 50 may be provided in the non-detection area NA on the second surface 10b side of the sensor film 10. However, when the decorative layer 50 is provided on either the first surface 10a side or the second surface 10b side of the sensor film 10, when viewed from the first surface 30a side of the resin layer 30 after the IML, The decorative layer 50 needs to be provided in front of the electrode layer and the lead-out wiring 42 (above in FIG. 7D). Moreover, also in the manufacturing method of the input device 1A according to the present embodiment, the sensor film 10, the stretch suppression layer 70, and the decorative layer 50 are preformed as a process between step S203 and step S204, and the sensor film 10, a stretch suppressing layer 70, and a decorative layer 50 may be configured.
- FIG. 8 is a schematic cross-sectional view of still another input device according to this embodiment, and corresponds to a cross-sectional view taken along line AA shown in FIG.
- the input device 1 ⁇ / b> B according to the present embodiment includes a sensor film 10, a resin layer 30, a decoration layer 50, and an extension suppression layer 70.
- the sensor film 10 includes a transparent substrate 101, an electrode layer 41, and a lead wiring 42.
- the transparent substrate 101 of the sensor film 10 has translucency and is formed of a film-like substrate such as polyethylene terephthalate (PET).
- a decorative layer 50 is provided in the non-detection area NA of the second surface 101b of the transparent substrate 101 (second surface 10b of the sensor film 10).
- An electrode layer 41 is provided in the detection area VA of the second surface 101b of the transparent substrate 101.
- the electrode layer 41 has translucency and is one of detection electrodes in the touch sensor.
- ITO Indium Tin Oxide
- a light-transmitting organic conductive layer, a metal nanowire, or the like is used for the electrode layer 41.
- a part of the lead-out wiring 42 is provided on the rear surface (lower side in FIG. 8) of the non-detection area NA and the decorative layer 50.
- the lead-out wiring 42 includes a flexible wiring board extending outward from the sensor film 10 as shown in FIG. 1 and wiring connected to the electrode layer 41 and routed outside the detection area VA of the sensor film 10. It is.
- the elongation suppressing layer 70 is provided on the surface of the electrode layer 41 and on the surface opposite to the transparent substrate 101 when viewed from the electrode layer 41. That is, the elongation suppressing layer 70 is provided on the second surface 10 b side of the sensor film 10.
- the elongation suppressing layer 70 is formed in the detection region VA by bonding using an adhesive or application.
- the resin layer 30 is provided on the side opposite to the transparent substrate 101 as viewed from the elongation suppressing layer 70.
- the resin layer 30 is provided under the sensor film 10 so as to cover the detection area VA and the non-detection area NA.
- the resin layer 30 has translucency and is formed by an injection molding method in which a material containing a synthetic resin in a molten state is injected into a mold.
- the sensor film 10 of the input device 1B has a three-dimensional curved surface (first curved surface) in the detection area VA and has a three-dimensional curved surface (first curved surface) in the detection area VA in the non-detection area NA. It has a three-dimensional curved surface (second curved surface) having a curvature radius (minimum curvature radius) smaller than the curvature radius (minimum curvature radius region LA).
- the structures and materials of the other layers are the same as the structures and materials of the layers of the input device 1 described above with reference to FIGS. 1 and 2.
- the same effect as that of the input device 1 described above with reference to FIGS. 1 and 2 can be obtained, and the sensor film 10 exists on the front side of the resin layer 30. Even if the resin layer 30 is damaged, scattering of the resin layer 30 can be suppressed.
- FIG. 9 is a flowchart illustrating still another manufacturing method of the input device according to this embodiment.
- FIG. 10 is a schematic cross-sectional view illustrating still another method for manufacturing the input device according to this embodiment.
- the manufacturing method of the input device 1 ⁇ / b> B includes the formation of the decorative layer 50 (Step S ⁇ b> 301), the formation of the electrode layer 41 and the lead-out wiring 42 (Step S ⁇ b> 302), and the expansion suppression. Formation of the layer 70 (step S303) and formation of the resin layer 30 (step S304) are provided.
- the transparent base material 101 is prepared, and the second surface 101b of the transparent base material 101 is not detected.
- the decorative layer 50 is formed in the area NA.
- a film-like substrate such as polyethylene terephthalate (PET) is used.
- PET polyethylene terephthalate
- the decorative layer 50 is a light-shielding material and is formed around the detection area VA by printing or coating. Alternatively, the decorative layer 50 may be formed by sputtering, vapor deposition, or the like.
- the electrode layer 41 and the lead wiring 42 shown in step S302 As shown in FIG. 10C, the electrode layer 41 is formed in the detection area VA on the second surface 101b side of the transparent substrate 101, A part of the lead-out wiring 42 is formed in the non-detection area NA on the rear surface (downward in FIG. 10C) from the decorative layer 50. The other part of the lead wiring 42 is provided on the flexible wiring board (see FIG. 1). As described above with reference to FIGS. 3 and 4, the electrode layer 41 and the lead-out wiring 42 are formed by photolithography, etching, and screen printing. In this way, the sensor film 10 is formed.
- the surface of the electrode layer 41 is on the surface opposite to the transparent substrate 101 as viewed from the electrode layer 41.
- the elongation suppressing layer 70 is formed. That is, the elongation suppressing layer 70 is formed on the second surface 10 b side of the sensor film 10.
- the elongation suppressing layer 70 is formed by bonding using an adhesive or application.
- As the elongation suppressing layer 70 it is preferable to use a transparent material having an elongation equal to or less than that of the material of the transparent substrate 101.
- the material of the elongation suppressing layer 70 may be the same as the material of the transparent substrate 101, and the thickness of the elongation suppressing layer 70 may be substantially the same as the thickness of the transparent substrate 101. Examples of the material of the elongation suppressing layer 70 are as described above with reference to FIGS. 3 and 4.
- the sensor film 10 in which the electrode layer 41 and the lead-out wiring 42 were formed, and the decoration layer formed in the sensor film 10 50 and the elongation suppressing layer 70 are inserted into an injection mold, and a material containing a synthetic resin having translucency is poured into the mold to form a resin layer 30 as shown in FIG. That is, a laminated body of the sensor film 10, the decoration layer 50, the elongation suppressing layer 70, and the resin layer 30 is configured by IML.
- the same effect as that in the manufacturing method of the input device 1 described above with reference to FIGS. 1 and 2 can be obtained, and the sensor film 10 can be placed in front of the resin layer 30. Since it forms in the side, even if the resin layer 30 is damaged, the input device 1B which can suppress scattering of the resin layer 30 can be manufactured.
- the sensor film 10, the decorative layer 50, and the elongation suppressing layer 70 are preformed as a process between step S303 and step S304, and the sensor film 10, a decorative layer 50, and a stretch suppression layer 70 may be configured.
- FIG. 11 is a schematic cross-sectional view of still another input device according to the present embodiment, and corresponds to a cross-sectional view taken along line AA shown in FIG. 1C of input devices which concern on this embodiment are the 1st sensor film 11, the 2nd sensor film 12, the resin layer 30, the decorating layer 50, the 1st expansion
- the first sensor film 11 includes a first transparent substrate 101, a first electrode layer 41, and a first lead wiring 42.
- the second sensor film 12 includes a second transparent substrate 102, a second electrode layer 43, and a second lead wiring 44.
- each layer of the first sensor film 11 are the same as the structure and material of each layer of the sensor film 10 described above with reference to FIG.
- the second transparent substrate 102 of the second sensor film 12 is provided on the second surface 30 b of the resin layer 30.
- the 2nd transparent base material 102 has translucency, and is formed with film-form base materials, such as a polyethylene terephthalate (PET).
- PET polyethylene terephthalate
- the second electrode layer 43 is provided in the detection area VA of the second surface 102b of the second transparent substrate 102.
- the second electrode layer 43 has translucency and is one of detection electrodes in the touch sensor.
- ITO Indium Tin Oxide
- a light-transmitting organic conductive layer, a metal nanowire, or the like is used for the second electrode layer 43.
- a part of the second lead-out wiring 44 is provided in the non-detection area NA on the rear surface (lower side in FIG. 11) of the decorative layer 50.
- the second lead wiring 44 is connected to a flexible wiring board extending outward from the second sensor film 12 and the second electrode layer 43, and is drawn to the outside of the detection area VA of the second sensor film 12. Includes routed wiring.
- the first electrode layer 41 is provided on one side of the resin layer 30, and the second electrode layer 43 is the other side of the resin layer 30. It is provided on the side. That is, the resin layer 30 is provided between the first electrode layer 41 and the second electrode layer 43. In other words, the resin layer 30 is provided between the first sensor film 11 and the second sensor film 12.
- the input device 1C can function as a mutual detection type capacitive sensor. That is, the input device 1 ⁇ / b> C applies a driving voltage to one of the electrode layers of the first electrode layer 41 and the second electrode layer 43, so that the first electrode layer 41 and the second electrode layer 43 A change in capacitance between the other electrode layer and the finger is detected. Thereby, the input device 1 ⁇ / b> C detects the X coordinate of the finger position using one electrode layer, and detects the Y coordinate of the finger position using the other electrode layer.
- a second elongation suppressing layer 72 is provided on the surface of the second electrode layer 43 and on the surface opposite to the second transparent substrate 102 when viewed from the second electrode layer 43. That is, the second extension suppressing layer 72 is provided on the second surface 12 b side of the second sensor film 12. The second extension suppressing layer 72 is formed in the detection region VA by bonding using an adhesive or application.
- extension suppression layer 72 are 2nd sensor films. 12 may be provided on the first surface 12a side. That is, the second electrode layer 43 and the second extension suppressing layer 72 may be provided between the second transparent base material 102 and the resin layer 30.
- the first sensor film 11 of the input device 1C has a three-dimensional curved surface (first curved surface) in the detection region VA, and also has a three-dimensional curved surface (first surface) in the detection region VA in the non-detection region NA.
- (Curved surface) has a three-dimensional curved surface (second curved surface) having a curvature radius (minimum curvature radius) smaller than the curvature radius (minimum curvature radius region LA).
- the second sensor film 12 of the input device 1C has a three-dimensional curved surface (third curved surface) in the detection area VA, and also has a three-dimensional curved surface (first pattern) in the detection area VA in the non-detection area NA. 3 curved surface (fourth curved surface) having a curvature radius (minimum curvature radius) smaller than the curvature radius (minimum curvature radius region LA).
- the structures and materials of the other layers are the same as the structures and materials of the layers of the input device 1 described above with reference to FIGS. 1 and 2.
- the same effect as that of the input device 1B described above with reference to FIG. 8 is obtained, and a plurality of sensor films (in the present embodiment, the first sensor film 11 and the second sensor film 2) are obtained. Even if the sensor film 12) is provided, it can be accommodated within the range of the allowable extension amount of each of the plurality of sensor films. Thereby, each expansion
- FIG. 12 is a flowchart illustrating still another manufacturing method of the input device according to this embodiment.
- 13 and 14 are schematic cross-sectional views illustrating still another method for manufacturing the input device according to this embodiment.
- the manufacturing method of the input device 1 ⁇ / b> C includes the formation of the decoration layer 50 (Step S ⁇ b> 401) and the formation of the first electrode layer 41 and the first lead wiring 42 (Step S ⁇ b> 401). S402), the formation of the first extension suppressing layer 71 (step S403), the formation of the second electrode layer 43 and the second lead wiring 44 (step S404), and the formation of the second extension suppressing layer 72 (step S404). Step S405) and formation of the resin layer 30 (Step S406).
- the manufacturing method in steps S401 to S403 is the same as each manufacturing method in steps S301 to S303 described above with reference to FIGS. .
- the first extension suppressing layer 71 it is preferable to use a transparent material having extensibility equal to or less than that of the first transparent base material 101.
- the material of the first elongation suppressing layer 71 include polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and translucent polyimide.
- PET polyethylene terephthalate
- PEN polyethylene naphthalate
- translucent polyimide translucent polyimide.
- the material of the first elongation suppressing layer 71 is the same as the material of the first transparent substrate 101, and the thickness of the first elongation suppressing layer 71 is substantially the same as the thickness of the first transparent substrate 101. May be.
- a second transparent substrate 102 is prepared.
- the second electrode layer 43 is formed in the detection area VA on the second surface 102b side of the second transparent base material 102, and is a non-detection area NA on the rear surface of the decorative layer 50 (FIG. 14B).
- a part of the second lead wiring 44 is formed in a region corresponding to (lower).
- the other part of the second lead wiring 44 is provided on the flexible wiring board (see FIG. 1).
- the second electrode layer 43 and the second lead wiring 44 are formed by photolithography, etching, and screen printing. In this way, the second sensor film 12 is formed.
- the second extension layer 72 is the surface of the second electrode layer 43, as viewed from the second electrode layer 43.
- the second elongation suppressing layer 72 is formed on the surface opposite to the transparent substrate 102. That is, the second elongation suppressing layer 72 is formed on the second surface 12 b side of the second sensor film 12.
- the second extension suppressing layer 72 is formed by bonding using an adhesive, application, or the like.
- As the second elongation suppressing layer 72 it is preferable to use a transparent material having extensibility equal to or less than that of the second transparent base material 102.
- the material of the second elongation suppressing layer 72 examples include polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and translucent polyimide.
- PET polyethylene terephthalate
- PEN polyethylene naphthalate
- translucent polyimide examples include polyimide.
- the material of the second stretch suppression layer 72 is the same as the material of the second transparent substrate 102, and the thickness of the second stretch suppression layer 72 is substantially the same as the thickness of the second transparent substrate 102. May be.
- a resin layer 30 is formed. That is, the first sensor film 11, the decorative layer 50, the first extension suppressing layer 71, the resin layer 30, the second sensor film 12, and the second extension suppressing layer 72 by IML. Construct a laminate.
- the manufacturing method of the input device 1C According to the manufacturing method of the input device 1C according to the present embodiment, an effect similar to the effect in the manufacturing method of the input device 1 described above with reference to FIGS. 1 and 2 is obtained, and a plurality of sensor films (in this embodiment, Even when the first sensor film 11 and the second sensor film 12) are provided, it is possible to manufacture the input device 1C that can be accommodated within the range of the allowable extension amount of each of the plurality of sensor films. it can.
- the first sensor film 11, the decorative layer 50, the first elongation suppressing layer 71, and the first step are performed as a process between step S405 and step S406.
- the second sensor film 12 and the second extension suppressing layer 72 are preformed, and a laminate of the first sensor film 11, the decorative layer 50, and the first extension suppressing layer 71, and the first You may comprise the laminated body of the 2 sensor film 12 and the 2nd expansion
- steps S401 to S403 may be performed between the steps S405 and S406. That is, the manufacturing process of the first sensor film 11 may be performed separately from the manufacturing process of the second sensor film 12.
- the extension part of the sensor film 10 having a two-dimensional or three-dimensional curved surface is partially controlled to suppress the detection area VA of the sensor film 10 from being destroyed. It is possible to provide a method for manufacturing the input device 1, 1A, 1B, 1C and the input device 1, 1A, 1B, 1C.
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Abstract
Description
図1は、本実施形態に係る入力装置を例示する斜視図である。
図2は、本実施形態に係る入力装置の模式断面図であり、図1に示すA-A線断面図である。
本実施形態に係る入力装置は、曲面を有する例えばタッチパネルである。入力装置1は、センサフィルム10と、樹脂層30と、加飾層50と、伸長抑制層70と、を備える。
本願明細書において「透明」および「透光性」とは、可視光線透過率が50%以上(好ましくは80%以上)の状態を指す。更に、ヘイズ値が6%以下であることが好適である。本願明細書において「遮光」および「遮光性」とは、可視光線透過率が50%未満(好ましくは20%未満)の状態を指す。
図3は、本実施形態に係る入力装置の製造方法を例示するフローチャートである。
図4は、本実施形態に係る入力装置の製造方法を例示する模式断面図である。
本実施形態に係る入力装置1Aは、センサフィルム10と、樹脂層30と、加飾層50と、伸長抑制層70と、を備える。
これについて、図面を参照しつつ、さらに説明する。
図7は、本実施形態に係る入力装置の他の製造方法を例示する模式断面図である。
成(ステップS203)と、樹脂層30の形成(ステップS204)と、を備える。なお、加飾層50の形成(ステップS203)は、伸長抑制層70の形成(ステップS202)よりも先に行われてもよい。
本実施形態に係る入力装置1Bは、センサフィルム10と、樹脂層30と、加飾層50と、伸長抑制層70と、を備える。センサフィルム10は、透明基材101と、電極層41と、引き出し配線42と、を有する。
図10は、本実施形態に係る入力装置のさらに他の製造方法を例示する模式断面図である。
本実施形態に係る入力装置1Cは、第1のセンサフィルム11と、第2のセンサフィルム12と、樹脂層30と、加飾層50と、第1の伸長抑制層71と、第2の伸長抑制層72と、を備える。第1のセンサフィルム11は、第1の透明基材101と、第1の電極層41と、第1の引き出し配線42と、を有する。第2のセンサフィルム12は、第2の透明基材102と、第2の電極層43と、第2の引き出し配線44と、を有する。
図13および図14は、本実施形態に係る入力装置のさらに他の製造方法を例示する模式断面図である。
10 センサフィルム
11 第1のセンサフィルム
12 第2のセンサフィルム
10a 第1面
10b 第2面
12a 第1面
12b 第2面
30 樹脂層
30a 第1面
30b 第2面
41 (第1の)電極層
42 (第2の)引き出し配線
43 第2の電極層
44 第2の引き出し配線
50 加飾層
70 伸長抑制層
71 第1の伸長抑制層
72 第2の伸長抑制層
101 (第1の)透明基材
101a 第1面
101b 第2面
102 第2の透明基材
102b 第2面
VA 検出領域
NA 非検出領域
LA 極小曲率半径領域
Claims (14)
- センサを構成する検出領域に設けられ透光性を有する第1の曲面と、前記検出領域以外の非検出領域に設けられ前記第1の曲面の曲率半径よりも小さい曲率半径を有する第2の曲面と、を有するセンサフィルムと、
前記センサフィルムの上に設けられ、透光性を有する樹脂を含む材料により形成された樹脂層と、
前記センサフィルムの前記検出領域に設けられ、前記センサフィルムの前記検出領域の伸長量を前記センサフィルムの前記非検出領域の伸長量よりも小さく抑える伸長抑制層と、
を備えたことを特徴とする入力装置。 - 前記センサフィルムは、
凸型の曲面に形成された第1面と、
前記第1面とは反対側に位置する第2面と、
を有し、
前記樹脂層は、前記第1面側に設けられ、
前記伸長抑制層は、前記第1面側および前記第2面側の少なくともいずれかに設けられたことを特徴とする請求項1記載の入力装置。 - 前記センサフィルムは、
凸型の曲面に形成された第1面と、
前記第1面とは反対側に位置する第2面と、
を有し、
前記伸長抑制層は、前記第2面側に設けられ、
前記樹脂層は、前記伸長抑制層からみて前記センサフィルムとは反対側に設けられたことを特徴とする請求項1記載の入力装置。 - 前記センサフィルムは、透光性を有するフィルム状の基材を有し、
前記伸長抑制層の材料は、前記基材の材料と同じであることを特徴とする請求項1~3のいずれか1つに記載の入力装置。 - 前記伸長抑制層の厚さは、前記基材の厚さと同じであることを特徴とする請求項4記載の入力装置。
- 前記センサフィルムは、第1のセンサフィルムであり、
前記伸長抑制層は、第1の伸長抑制層であり、
前記第1のセンサフィルムとは異なる第2のセンサフィルムであって、前記検出領域に設けられ透光性を有する第3の曲面と、前記非検出領域に設けられ前記第3の曲面の曲率半径よりも小さい曲率半径を有する第4の曲面と、を有する第2のセンサフィルムと、
前記第2のセンサフィルムの前記検出領域に設けられ、前記第2のセンサフィルムの前記検出領域の伸長量を前記第2のセンサフィルムの前記非検出領域の伸長量よりも小さく抑える第2の伸長抑制層と、
をさらに備え、
前記樹脂層は、前記第1のセンサフィルムと、前記第2のセンサフィルムと、の間に設けられたことを特徴とする請求項1記載の入力装置。 - 前記第1のセンサフィルムは、透光性を有するフィルム状の第1の基材を有し、
前記第1の伸長抑制層の材料は、前記第1の基材の材料と同じであり、
前記第2のセンサフィルムは、透光性を有するフィルム状の第2の基材を有し、
前記第2の伸長抑制層の材料は、前記第2の基材の材料と同じであることを特徴とする請求項6記載の入力装置。 - 前記第1の伸長抑制層の厚さは、前記第1の基材の厚さと同じであり、
前記第2の伸長抑制層の厚さは、前記第2の基材の厚さと同じであることを特徴とする請求項7記載の入力装置。 - センサを構成する検出領域と、前記検出領域以外の非検出領域と、を有するセンサフィルムを形成する工程と、
前記センサフィルムの前記検出領域に、前記センサフィルムの前記検出領域の伸長量を前記センサフィルムの前記非検出領域の伸長量よりも小さく抑える伸長抑制層を形成する工程と、
前記伸長抑制層が形成された前記センサフィルムを型内に挿入した状態で、透光性を有する樹脂を含む材料を前記型内に流し込み、前記センサフィルムの上に樹脂層を形成する工程と、
を備え、
前記樹脂層を形成する工程において、前記センサフィルムの前記検出領域に第1の曲面を形成し、前記センサフィルムの前記非検出領域に前記第1の曲面の曲率半径よりも小さい曲率半径を有する第2の曲面を形成することを特徴とする入力装置の製造方法。 - 前記センサフィルムは、
凸型の曲面に形成された第1面と、
前記第1面とは反対側に位置する第2面と、
を有し、
前記樹脂層を形成する工程は、前記樹脂層を前記第1面側に設ける工程を有し、
前記伸長抑制層を形成する工程は、前記第1面側および前記第2面側の少なくともいずれかに前記伸長抑制層を設ける工程を有することを特徴とする請求項9記載の入力装置の製造方法。 - 前記センサフィルムは、
凸型の曲面に形成された第1面と、
前記第1面とは反対側に位置する第2面と、
を有し、
前記伸長抑制層を形成する工程は、前記伸長抑制層を前記第2面側に設ける工程を有し、
前記樹脂層を形成する工程は、前記伸長抑制層からみて前記センサフィルムとは反対側に前記樹脂層を設ける工程を有することを特徴とする請求項9記載の入力装置の製造方法。 - 前記樹脂層を形成する工程において前記第1の曲面および前記第2の曲面を形成することに代えて、前記樹脂層を形成する工程の前工程として、前記センサフィルムを加熱して前記第1の曲面および前記第2の曲面を形成する工程を備えることを特徴とする請求項9~11のいずれか1つに記載の入力装置の製造方法。
- 前記センサフィルムは、第1のセンサフィルムであり、
前記伸長抑制層は、第1の伸長抑制層であり、
前記検出領域と、前記非検出領域と、を有し、前記第1のセンサフィルムとは異なる第2のセンサフィルムを形成する工程と、
前記第2のセンサフィルムの前記検出領域に、前記第2のセンサフィルムの前記検出領域の伸長量を前記第2のセンサフィルムの前記非検出領域の伸長量よりも小さく抑える第2の伸長抑制層を形成する工程と、
をさらに備え、
前記樹脂層を形成する工程は、
前記第1のセンサフィルムと前記第2のセンサフィルムとの間に前記樹脂層を設ける工程と、
前記第2のセンサフィルムの前記検出領域に第3の曲面を形成し、前記第2のセンサフィルムの前記非検出領域に前記第3の曲面の曲率半径よりも小さい曲率半径を有する第4の曲面を形成する工程と、
を有することを特徴とする請求項9記載の入力装置の製造方法。 - 前記樹脂層を形成する工程において前記第1の曲面、前記第2の曲面、前記第3の曲面および前記第4の曲面を形成することに代えて、前記樹脂層を形成する工程の前工程として、前記第1のセンサフィルムを加熱して前記第1の曲面および前記第2の曲面を形成する工程と、前記第2のセンサフィルムを加熱して前記第3の曲面および前記第4の曲面を形成する工程と、を備えることを特徴とする請求項13記載の入力装置の製造方法。
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