Decorative capacitive sensor film

Abstract

To provide a decorative capacitive sensor film which has less unevenness on a front surface than a conventional lighting switch, can impart decorative properties, and is usable for various switches and the like.SOLUTION: A decorative capacitive sensor film includes a decorative layer, at least one conductive layer, and a non-conductive adhesive layer. The conductive layer is disposed inside the non-conductive adhesive layer and / or on one or both surfaces of the non-conductive adhesive layer, and extends in an in-plane direction of the non-conductive adhesive layer.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to decorative capacitive sensor films. [Background technology]

[0002] In recent years, various types of capacitive touch sensors have been developed.

[0003] Patent Document 1 (JP 2016-081582 A) describes a touch sensor that detects a pressing state in a pressing direction on a predetermined operation surface, the touch sensor having a first electrode layer and a second electrode layer for detecting a change in capacitance, and a displacement layer between the first electrode layer and the second electrode layer that can displace the distance between the first electrode layer and the second electrode layer when pressed against the operation surface, the displacement layer being formed by dispersing a polymer-type silane coupling agent in a rubber-like elastic material, and having at least a plurality of column portions that can contract in the pressing direction, the column portions being integrally joined to at least one of the first electrode layer and the second electrode layer.

[0004] Patent Document 2 (JP Patent Publication 2012-243119A) describes a mesh structure having a substantially constant pitch, in which a bundle of first long patterns extending in a first direction are electrically connected to a plurality of short patterns extending in a second direction intersecting the first direction in a plan view, and the bundle of first long patterns is a first electrode pattern for contact sensing arranged at a distance from one another along the second direction, and a bundle of second long patterns extending in the second direction is electrically connected to a plurality of short patterns extending in the first direction to form a mesh structure having the same pitch as the pitch, and the bundle of second long patterns is arranged at a distance from one another along the first direction, and the second long patterns and the first long patterns are not electrically connected to each other. The present invention describes a capacitive touch panel comprising: a second electrode pattern for contact sensing that can form a mesh structure with the same pitch as the pitch even when the patterns intersect in the planar view; a dummy pattern that is formed with a mesh structure with the same pitch as the pitch and fills the space surrounded by the first electrode pattern and the second electrode pattern; a first pattern gap provided between the first electrode pattern and the dummy pattern that face each other in the planar view; and a second pattern gap provided between the second electrode pattern and the dummy pattern that face each other in the planar view, wherein each of the distances between the first pattern gap and the second pattern gap is set to approximately 1 / 2 the length of the pitch. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2016-081582 A [Patent Document 2] JP 2012-243119 A Summary of the Invention [Problem to be solved by the invention]

[0006] For example, in order to easily provide a suitable interior design, a decorative film may be applied to the walls of a room. In this case, the decorative film may also be applied to switches for lighting and the like installed on the wall. However, unlike the wall, such switches generally have uneven surfaces. Therefore, even if the decorative film is applied to the switches, the presence of the switches becomes conspicuous as shown in FIG. 6, and the room as a whole may not have a suitable interior design.

[0007] Decorative films are generally flexible because they are used by being attached to a wall or a curved adherend, etc. On the other hand, capacitive touch sensors and touch panels as described in Patent Documents 1 and 2 are not generally used for decorative purposes and do not have the flexibility of a film, so such touch sensors and touch panels cannot be used as decorative films.

[0008] The present disclosure provides a decorative capacitive sensor film that has a surface that is free of irregularities compared to conventional lighting switches such as that shown in Figure 6, and can be used for various switches and the like to add decorativeness. [Means for solving the problem]

[0009] According to one embodiment of the present disclosure, there is provided a decorative capacitive sensor film comprising a decorative layer, at least one conductive layer, and a non-conductive adhesive layer, the conductive layer being disposed within the non-conductive adhesive layer and / or on one or both sides of the non-conductive adhesive layer and extending in the in-plane direction of the non-conductive adhesive layer.

[0010] According to another embodiment of the present disclosure, there is provided a laminate in which the above-mentioned film is adhered to an adherend via a non-conductive adhesive layer, and an electrode is in contact with at least a portion of the conductive layer.

[0011] According to another embodiment of the present disclosure, there is provided a system comprising the laminate described above, and a control circuit and a power source connected to electrodes of the laminate, wherein signals generated from the films of the laminate are controlled by the control circuit to drive an electrical device. Effect of the Invention

[0012] According to the present disclosure, it is possible to provide a decorative capacitive sensor film that can be used for various switches, etc., which has a surface that is free of irregularities compared to conventional lighting switches, etc., and can be made decorative.

[0013] The above description should not be considered as a disclosure of all embodiments of the present invention and all advantages associated with the present invention. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a schematic diagram of a cross section of a decorative capacitive sensor film according to one embodiment of the present disclosure. [Diagram 2] FIG. 2 is a schematic diagram of a cross section of a decorative capacitive sensor film according to another embodiment of the present disclosure. [Diagram 3] FIG. 3 is a schematic diagram of a cross section of a decorative capacitive sensor film according to another embodiment of the present disclosure. [Figure 4] FIG. 4 is a schematic diagram of a cross section of a decorative capacitive sensor film according to another embodiment of the present disclosure. [Diagram 5] FIG. 5 is a diagram showing the configuration of a laminate according to one embodiment of the present disclosure. [Figure 6] FIG. 6 is a schematic diagram of a conventional lighting switch to which a decorative film is applied. [Figure 7] FIG. 7 is a photograph of a laminate including a decorative capacitive sensor film according to one embodiment of the present disclosure functioning as a switch. [Figure 8] FIG. 8 is a photograph of a system comprising the laminate of FIG. [Figure 9] FIG. 9 is another photograph of a system including the laminate of FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, for the purpose of illustrating representative embodiments of the present invention, the present invention will be described in more detail with reference to the drawings as necessary, but the present invention is not limited to these embodiments. Regarding the reference numbers of the drawings, elements with similar numbers in different drawings indicate similar or corresponding elements.

[0016] In this disclosure, the term "approximately" means including variations that occur due to manufacturing errors and the like, and is intended to allow for a variation of about ±20%.

[0017] In this disclosure, "(meth)acrylic" means acrylic or methacrylic, and "(meth)acrylate" means acrylate or methacrylate.

[0018] In the present disclosure, the term "film" also encompasses a member called a "sheet."

[0019] In the present disclosure, "transparent" refers to an average transmittance of about 80% or more, preferably about 85% or more, or about 90% or more, in the visible light region (wavelength 400 nm to 700 nm) measured in accordance with JIS K 7375. There is no particular limit to the upper limit of the average transmittance, but it can be, for example, less than about 100%, about 99% or less, or about 98% or less.

[0020] In the present disclosure, the term "semi-transparent" refers to an average transmittance in the visible light region (wavelength 400 nm to 700 nm) measured in accordance with JIS K 7375 of less than about 80%, desirably about 75% or less, and is intended to not completely conceal the base.

[0021] The decorative capacitive sensor film of the present disclosure will be described below with reference to the drawings as necessary.

[0022] The decorative capacitive sensor film 100 in FIG. 1 includes a decorative layer 101 , a non-conductive adhesive layer 103 and a conductive layer 105 .

[0023] Hereinafter, for the purpose of illustrating representative embodiments of the present disclosure, details of each component will be described with some reference numerals omitted.

[0024] The decorative capacitive sensor film of the present disclosure (sometimes simply referred to as a "sensor film") includes a decorative layer, at least one conductive layer, and a non-conductive adhesive layer, and the conductive layer is disposed inside the non-conductive adhesive layer and / or on one or both sides of the non-conductive adhesive layer, and extends in the in-plane direction of the non-conductive adhesive layer. The sensor film of the present disclosure having at least this configuration can function as a capacitive sensor, and can be used as a switch without protrusions such as a button as shown in FIG. 6.

[0025] The sensor film of the present disclosure includes at least one conductive layer. The sensor film of the present disclosure can be typically used in a state where an electrode is connected to at least a part of the at least one conductive layer, and a control circuit, a power source, an electric device, and the like are further connected, as described below. When a finger or the like comes into contact with or approaches the conductive layer of the sensor film in such a state (i.e., the conductive layer connected to the electrode, or the conductive reaction part in contact with or in close proximity to the conductive layer, described below), a capacitance is generated between the finger or the like and the conductive layer. By utilizing the change in capacitance before and after the finger or the like comes into contact with or approaches the conductive layer, the sensor film of the present disclosure can function as a capacitance type sensor.

[0026] The conductive layer may be one, but is preferably multiple (e.g., two or more, or three or more). For example, at a construction site where the sensor film of the present disclosure is attached to a wall or the like, the position of the switch may be changed suddenly. In such a case, if there are multiple conductive layers, the position of the part that reacts as a switch can be changed flexibly and appropriately. When there are multiple conductive layers, each conductive layer may be the same or different. From the viewpoint of obtaining stable quality, it is preferable that each conductive layer is the same. Each conductive layer may be a single layer structure or a laminated structure.

[0027] When there are multiple conductive layers, the intervals between the conductive layers may be different or may be approximately equal. From the viewpoint of obtaining a stable reaction sensitivity of the sensor, it is preferable that the intervals between the conductive layers are approximately equal. If the intervals between the conductive layers are approximately equal, it is also advantageous in that the post-processing of the sensor film is easy. The intervals between the conductive layers can be appropriately set in consideration of the stable reaction sensitivity of the sensor, the size of the conductive reaction part described later, the post-processing properties, etc.

[0028] The conductive layer may be disposed on one side of the non-conductive adhesive layer 103 opposite to the decorative layer 101, between the non-conductive adhesive layer 103 and the decorative layer 101, or on both sides of the non-conductive adhesive layer 103, as shown in FIG. 1. Alternatively, the conductive layer may be disposed inside the non-conductive adhesive layer, as shown in FIGS. 2 and 3. In this case, the conductive layer may be disposed over the entire thickness direction of the non-conductive adhesive layer, as shown in FIG. 2, or may be disposed on a part of the thickness direction of the non-conductive adhesive layer, as shown in FIG. 3. Alternatively, the conductive layer may be disposed inside the non-conductive adhesive layer and on one or both sides of the non-conductive adhesive layer. In particular, it is preferable that the conductive layer is disposed only inside the non-conductive adhesive layer. With such a configuration, the unevenness due to the thickness of the conductive layer is unlikely to be reflected in the decorative layer, so that a more excellent decorative performance can be exhibited.

[0029] The conductive layer extends in the in-plane direction of the non-conductive adhesive layer as shown in FIG. 5. Here, "extending" means that the conductive layer is present so as to extend in the in-plane direction of the non-conductive adhesive layer. The conductive layer may extend from one end of the sensor film 500 to the other end as shown in FIG. 5, or the conductive layer may not extend from one end of the sensor film to the other end as long as the conductive layer and the electrodes can be connected. The sensor film of the present disclosure may be cut to an appropriate size or shape at the construction site. In such a case, if the conductive layer extends from one end of the sensor film to the other end, the electrodes can be suitably connected to the conductive layer regardless of the size or shape.

[0030] The shape of the conductive layer is not particularly limited, and may be, for example, as shown in FIG. 5, substantially linear (substantially striped when there are multiple conductive layers), or substantially wavy or zigzag, or a mixture of these. From the viewpoint of productivity, reaction sensitivity of the sensor, etc., the conductive layer is preferably substantially linear (substantially striped when there are multiple conductive layers). Such a shape may be configured over the entire conductive layer, or may be configured in a part of each conductive layer. For example, when one conductive layer is formed at the approximate center of the sensor film, the central area of ​​the conductive layer may be configured in a shape (e.g., substantially circular) like the conductive reaction part described later, and the other part may be configured in a substantially linear shape. When the conductive layer has the same configuration (e.g., the same shape) as the conductive reaction part described later, that part can function similarly to the conductive reaction part described later.

[0031] The thickness of the conductive layer is not particularly limited, and can be appropriately set in consideration of the material constituting the conductive layer so as to obtain the desired reaction sensitivity in the sensor. The thickness can be, for example, about 0.1 micrometers or more, about 0.5 micrometers or more, about 1 micrometers or more, about 5 micrometers or more, about 10 micrometers or more, or about 20 micrometers or more, and can be about 100 micrometers or less, about 50 micrometers or less, or about 30 micrometers or less. The thickness of each layer in the sensor film of the present disclosure can be defined as the average value of the thicknesses of at least five arbitrary points in the target layer of the laminated structure, for example, the conductive layer, measured using an optical microscope or a scanning electron microscope in the thickness direction cross section of the laminated structure.

[0032] The width of the conductive layer is not particularly limited, and can be appropriately set in consideration of the material constituting the conductive layer so as to obtain the desired reaction sensitivity in the sensor. Here, the "width of the conductive layer" refers to, for example, the horizontal length perpendicular to the thickness direction of the conductive layer 105 in FIG. 1 when one conductive layer has a substantially uniform shape (for example, the entire conductive layer is substantially linear), and refers to the length of the conductive layer other than the irregular shape when one conductive layer has an irregular shape (for example, when one conductive layer is formed at the substantially center of the sensor film, the conductive layer has a substantially circular shape near the center corresponding to the irregular shape part and the other parts are substantially linear). The width of the conductive layer can be, for example, about 1 mm or more, about 3 mm or more, about 5 mm or more, about 7 mm or more, or about 1 cm or more, and can be about 5 cm or less, about 4 cm or less, about 3 cm or less, about 2 cm or less, or about 1 cm or less. The width of the conductive layer can be defined as the average value of the widths of at least five arbitrary points on the conductive layer when measured from the adhesive layer side opposite the decorative layer using an optical microscope or a scanning electron microscope.

[0033] The conductive layer may be entirely or partially transparent, semi-transparent, or opaque in the visible range depending on the intended use of the sensor film, etc.

[0034] The type of conductive layer is not particularly limited, and examples thereof include a conductive plating layer, a conductive vapor deposition layer, a conductive resin layer, a conductor wire, a metal foil, and a metal alloy foil. The conductive layer may be a single conductive layer having such a configuration, or a combination of two or more conductive layers. The conductive layer may be applied directly to the decorative layer and / or the non-conductive adhesive layer constituting the sensor film, or may be applied indirectly via a bonding layer or the like. The conductive plating layer or the conductive vapor deposition layer may be applied directly to the decorative layer or the non-conductive adhesive layer constituting the sensor film, for example, using a mask or the like, or a laminate formed by plating or vapor deposition on a support may be cut to an appropriate size and shape and applied.

[0035] The conductive material that can be used in preparing the conductive layer is not particularly limited, and examples thereof include metals such as nickel, chromium, palladium, aluminum, iron, copper, silver, etc., or metal alloys containing at least one of these metals, conductive oxides such as ITO (indium tin oxide), carbon, etc. These can be used alone or in combination of two or more.

[0036] Among the conductive layers, a conductive resin layer is preferred, and a conductive adhesive layer is more preferred. The sensor film of the present disclosure may be applied to a large adherend such as a wall, or the film may be cut at the construction site. The conductive resin layer can be formed without using an apparatus unsuitable for large-scale applications such as a vapor deposition apparatus, so that the sensor film can be made large-area and is easy to cut, and therefore can be suitably used in the sensor film of the present disclosure. Furthermore, the conductive adhesive layer can be formed simultaneously with the non-conductive adhesive layer, for example, by using stripe coating, so that productivity can be improved. The conductive adhesive layer can also be suitably bonded to the adherend or other layers because the conductive layer itself exhibits adhesive performance. The conductive resin layer may be in the form of a film, a nonwoven fabric, or a combination of these.

[0037] The conductive resin layer can be formed by, for example, subjecting a resin layer to metal plating and / or metal vapor deposition, or by blending a conductive filler. Alternatively, a conductive resin layer can be adopted in which a resin layer blended with a conductive filler is applied to one or both sides of a resin layer that has been subjected to metal plating and / or metal vapor deposition. There is no particular limitation on the conductive filler, and for example, a filler composed of the above-mentioned conductive material can be used. The conductive filler can be used alone or in combination of two or more kinds. There is no particular limitation on the amount of conductive filler blended, and it can be appropriately set depending on the type or size of the conductive filler, the reaction sensitivity of the required sensor, and the like.

[0038] There is no particular limitation on the resin material that can be used in preparing the conductive resin layer. Examples of the resin material include thermoplastic resins such as polyolefin resins (e.g., polyethylene, polypropylene), polyester resins (e.g., polyethylene terephthalate, polyethylene naphthalate), polycarbonate resins, polyamide resins, and polyphenylene sulfide resins; thermosetting resins such as epoxy resins, (meth)acrylic resins, resins having urethane bonds, silicone resins, unsaturated polyester resins, phenolic resins, melamine resins, and polyimide resins; and rubber-based resins such as silicone rubber, isoprene rubber, butadiene rubber, styrene butadiene rubber, chloroprene rubber, ethylene propylene rubber, ethylene propylene diene rubber, nitrile rubber, acrylonitrile butadiene rubber (NBR), hydrogenated NBR, acrylic rubber, urethane rubber, fluorine-based rubber, and natural rubber. The resin materials can be used alone or in combination of two or more. Here, in the present disclosure, a "resin having a urethane bond" can include, in addition to a urethane resin, for example, a resin prepared using at least one selected from a urethane (meth)acrylate and a urethane (meth)acrylate oligomer, and the urethane resin can also include a (meth)acrylic urethane resin.

[0039] When a conductive adhesive layer is used as the conductive resin layer, the resin material may be the same as the material for the non-conductive adhesive layer described below.

[0040] The sensor film of the present disclosure includes a decorative layer. Examples of the decorative layer include, but are not limited to, a color layer having a coating color, such as a light color such as white or yellow, or a dark color such as red, brown, green, blue, gray, or black; a pattern layer that imparts a pattern such as wood grain, stone grain, geometric pattern, or leather pattern, a logo, a figure, a letter, a number, a symbol, a photograph, or a picture to an article; a relief layer having a concave-convex shape on the surface; and combinations thereof. The decorative layer may be a single layer or a laminated layer.

[0041] The decorative layer can be applied directly or indirectly via a bonding layer or the like to the entire surface or part of a layer constituting the sensor film, such as, but not limited to, a non-conductive adhesive layer or a surface layer described below.

[0042] Materials for the color layer are not limited to the following, but may include, for example, materials in which pigments such as inorganic pigments, such as carbon black, yellow lead, yellow iron oxide, red iron oxide, and red iron oxide, phthalocyanine pigments, such as phthalocyanine blue and phthalocyanine green, organic pigments, such as azo lake pigments, indigo pigments, perinone pigments, perylene pigments, quinophthalone pigments, dioxazine pigments, and quinacridone pigments, such as quinacridone red, are dispersed in binder resins, such as (meth)acrylic resins and resins having urethane bonds. Among these, resins having urethane bonds are preferred from the viewpoint of impact resistance, etc.

[0043] The color layer can be formed using such materials by a coating method such as gravure coating, roll coating, die coating, bar coating, or knife coating.

[0044] The pattern layer is not limited to the following, but may be, for example, a pattern such as a design, logo, or picture directly applied to the non-conductive adhesive layer or the surface layer described below using a printing method such as gravure direct printing, gravure offset printing, inkjet printing, laser printing, or screen printing, or may be a film or sheet having a pattern, logo, or picture formed by coating such as gravure coating, roll coating, die coating, bar coating, or knife coating, punching, etching, or the like. As the material for the pattern layer, for example, the same material as that used for the color layer can be used.

[0045] The relief layer may be a thermoplastic resin film having a surface texture formed by a conventional method such as embossing, scratching, laser processing, dry etching, or hot pressing. The relief layer may also be formed by applying a thermosetting or radiation curing resin such as a curable (meth)acrylic resin to a release liner having a texture, curing the resin by heating or irradiating it with radiation, and removing the release liner.

[0046] The thermoplastic resin, thermosetting resin, and radiation curable resin used in the relief layer are not particularly limited, and examples thereof include fluorine-based resins, polyester-based resins such as PET and PEN, (meth)acrylic resins, polyolefin-based resins such as polyethylene and polypropylene, thermoplastic elastomers, polycarbonates, polyamides, ABS resins, acrylonitrile-styrene resins, polystyrene, vinyl chloride, and resins having urethane bonds. Among these, resins having urethane bonds are preferred from the viewpoint of impact resistance, etc. The relief layer may contain at least one of the pigments used in the color layer.

[0047] The thickness of the decorative layer may be appropriately adjusted depending on the required decorativeness, etc., and is not particularly limited, but can be, for example, about 1 micrometer or more, about 3 micrometers or more, or about 5 micrometers or more, and can be about 200 micrometers or less, about 150 micrometers or less, or about 100 micrometers or less.

[0048] The sensor film of the present disclosure includes a non-conductive adhesive layer. The non-conductive adhesive layer is typically a layer that can be applied to an adherend. The non-conductive adhesive layer may be applied to the entire surface of the sensor film as shown in FIG. 1, or may be applied partially to the sensor film as shown in FIG. 2.

[0049] The non-conductive adhesive layer may be applied directly to the decorative layer or indirectly via another layer (eg, a bonding layer).

[0050] The material of the non-conductive adhesive layer is not particularly limited, and for example, commonly used adhesives such as (meth)acrylic, polyolefin, polyurethane, polyester, and rubber-based solvent-based, emulsion-based, pressure-sensitive, heat-sensitive, heat-curable, or UV-curable adhesives can be used. In the present disclosure, "pressure-sensitive adhesive" refers to an adhesive that is permanently tacky at room temperature, adheres to various surfaces with light pressure, and does not exhibit a phase change (from liquid to solid). The adhesive may be thermally crosslinked or radiation-crosslinked (e.g., electron beam or UV) by a crosslinking agent.

[0051] The thickness of the non-conductive adhesive layer is not particularly limited, and can be, for example, about 5 micrometers or more, about 10 micrometers or more, or about 20 micrometers or more, and can be about 100 micrometers or less, about 80 micrometers or less, or about 50 micrometers or less.

[0052] The sensor film of the present disclosure may include any additional configuration. Such additional configuration may include at least one selected from the group consisting of a conductive reaction part, a surface layer, a bonding layer, an intermediate film layer, and a release liner. The additional configuration may be applied to the entire surface or a part of the sensor film. The additional configuration may have a three-dimensional shape such as an embossed pattern on its surface.

[0053] In some embodiments, the sensor film of the present disclosure includes one or more conductive reaction parts. The conductive reaction part is intended to mean a part or component that, as shown in FIG. 7, generates capacitance between a finger or the like and the conductive reaction part when the finger or the like touches or approaches the area where the conductive reaction part of the sensor film is present, thereby allowing the sensor film of the present disclosure to function as a capacitance-type sensor (e.g., a switch). The conductive reaction part may be configured separately from the conductive layer as shown below, or may be configured integrally with the conductive layer by adjusting the shape of the conductive layer described above. Since the location where the sensor is to react can be freely set, for example, at the construction site, it is preferable that the conductive reaction part is configured separately from the conductive layer.

[0054] The conductive reaction part may be disposed at a position in the sensor film where a change in capacitance occurs when a finger or the like touches or approaches the sensor film. For example, the conductive reaction part may be disposed on the outermost surface of the sensor film, or may be disposed on the non-conductive adhesive layer side of the outermost surface. When the conductive reaction part is disposed on the non-conductive adhesive layer side of the outermost surface, the conductive reaction part may be disposed, for example, on the surface of the non-conductive adhesive layer side opposite the decorative layer (for example, a configuration as shown in FIG. 4), or may be disposed between the decorative layer and the non-conductive adhesive layer, or in the configuration of FIG. 1, may be disposed between any other layer constituting the sensor film, or between any other layer and the decorative layer, the conductive layer, or the non-conductive adhesive layer. Here, the "outermost surface" refers to the surface opposite the adherend side when the sensor film is applied to the adherend.

[0055] The size of the conductive reaction part is not particularly limited, and can be appropriately set according to the purpose of use of the sensor film, the desired function of the conductive reaction part in the sensor film, and the like. For example, the conductive reaction part may have an area larger than at least a part (e.g., the width of the conductive layer) of at least one conductive layer 505 as shown in FIG. 5. A conductive reaction part having a size as shown in FIG. 5 is advantageous when used as a switch that is used by intentionally contacting or approaching a finger, as shown in FIG. 7. The size (e.g., maximum length) of such a conductive reaction part is not particularly limited, and can be, for example, about 3 cm or more, about 5 cm or more, about 7 cm or more, or about 10 cm or more, and can be about 30 cm or less, about 20 cm or less, about 15 cm or less, or about 10 cm or less.

[0056] The conductive reaction portion may be disposed over substantially the entire surface of the sensor film, or multiple conductive reaction portions may be disposed so as to be scattered over the entire surface of the sensor film. A conductive reaction portion having such a configuration is advantageous when used in a sensor that is used unintentionally, for example, a sensor that is disposed on the ground and reacts when stepped on or passed over.

[0057] The conductive reaction part can be configured to extend beyond or contact multiple conductive layers by adjusting the spacing or shape of the conductive layers, or the size or shape of the conductive reaction part, etc. With such a configuration, even if one conductive layer is broken, the other conductive layers can complement the sensor function.

[0058] The shape of the conductive reaction part is not particularly limited. Examples of the shape of the conductive reaction part shown when the sensor film is visually observed as shown in Fig. 5 include a substantially circular shape, a substantially polygonal shape (e.g., a substantially triangular shape, a substantially square shape, a substantially rectangular shape, a substantially regular pentagonal shape, a substantially regular hexagonal shape, a substantially regular octagonal shape, a substantially trapezoidal shape, a substantially rhombus shape, and a substantially star shape), and a substantially elliptical shape.

[0059] The type of conductive reaction part is not particularly limited, and examples thereof include a conductive plating layer, a conductive deposition layer, a conductive resin layer, a metal foil, and a metal alloy foil. As for these materials, the materials in the conductive layer described above can be similarly adopted. The conductive reaction part can be a single conductive reaction part having such a configuration, or a combination of two or more types. The conductive reaction part may be applied directly to each layer (e.g., a decorative layer, a conductive layer, a non-conductive adhesive layer) constituting the sensor film, or may be applied indirectly via a bonding layer or the like.

[0060] The thickness of the conductive reaction part is not particularly limited, and can be appropriately set in consideration of the material constituting the conductive reaction part, etc., so that the desired reaction sensitivity in the sensor can be obtained. Such a thickness can be, for example, about 0.1 micrometers or more, about 0.5 micrometers or more, about 1 micrometers or more, about 5 micrometers or more, about 10 micrometers or more, or about 20 micrometers or more, and can be about 100 micrometers or less, about 70 micrometers or less, about 50 micrometers or less, or about 30 micrometers or less.

[0061] In some embodiments, the sensor film of the present disclosure includes a surface layer. The material of the surface layer is not particularly limited, and may be, for example, a (meth)acrylic resin including polymethyl methacrylate (PMMA) and a (meth)acrylic copolymer, a resin having a urethane bond (e.g., polyurethane), a fluororesin such as ethylene-tetrafluoroethylene copolymer (ETFE), polyvinylidene fluoride (PVDF), methyl methacrylate-vinylidene fluoride copolymer (PMMA / PVDF), tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride copolymer (THV), a silicone resin, a polyolefin such as polyvinyl chloride (PVC), polycarbonate (PC), polyethylene (PE), or polypropylene (PP), a polyester such as polyethylene terephthalate (PET) or polyethylene naphthalate (PEN), a polyamide such as nylon, an ethylene / acrylic acid copolymer (EAA) and its ionomer, an ethylene-ethyl acrylate copolymer, an ethylene-vinyl acetate copolymer, or an ethylene-vinyl alcohol copolymer (EVOH), either alone or in a blend of two or more. The surface layer may have a single layer structure or a multilayer structure. For example, the surface layer may be a laminate of films formed from the above resins, or a multilayer coating of the above resins. The surface layer may have a three-dimensional uneven shape such as an embossed pattern on the entire surface or a part of the surface.

[0062] The surface layer can be formed by coating the resin composition on the decorative layer directly or via a bonding layer or the like. The coating of the surface layer can be performed before or after the sensor film is applied to the adherend. Alternatively, the resin composition can be coated on a release liner to form a surface layer film, and the film can be laminated to the decorative layer directly or via a bonding layer or the like. The surface layer film can be formed, for example, by coating a resin material such as a curable (meth)acrylic resin composition or a reactive polyurethane composition on a release liner or the like by knife coating, bar coating, blade coating, doctor coating, roll coating, cast coating, or the like, and curing with light or heat as necessary.

[0063] The surface layer may be a film formed in advance by extrusion, stretching, or the like. Such a film can be laminated to the decorative layer directly or via a bonding layer or the like. By using a film with high flatness as such a film, an appearance with higher surface flatness can be imparted to the article (laminate). The surface layer can also be formed by multilayer extrusion with other layers. As the other layer, for example, a (meth)acrylic film can be used. As the (meth)acrylic film, for example, a resin containing polymethyl methacrylate (PMMA), polybutyl acrylate, (meth)acrylic copolymer, ethylene / acrylic copolymer, ethylene vinyl acetate / acrylic copolymer, or the like can be used in the form of a film. The (meth)acrylic film has excellent transparency and / or scratch resistance, is resistant to heat and / or light, and is unlikely to fade and / or change in gloss. In addition, it has excellent moldability without the use of a plasticizer, and also has excellent stain resistance because it does not require the use of a plasticizer. Among them, those containing PMMA as the main component are preferable. For example, when a (meth)acrylic resin having excellent scratch resistance is used as the other layer, and a fluororesin such as ETFE, PVDF, or PMMA / PVDF having excellent chemical resistance is used as the surface layer, the surface layer formed can have the properties of both layers.

[0064] The surface layer of the present disclosure may contain, as optional components, for example, fillers, antioxidants, ultraviolet absorbers, light stabilizers, heat stabilizers, hard coat materials, gloss imparting agents, dispersants, plasticizers, flow improvers, surfactants, leveling agents, silane coupling agents, catalysts, pigments, dyes, etc., within the scope of not impairing performance (e.g., protective performance) according to the application. Among them, by using ultraviolet absorbers such as benzotriazole, Tinuvin (trademark) 400 (manufactured by BASF), and hindered amine light stabilizers (HALS) such as Tinuvin (trademark) 292 (manufactured by BASF), discoloration, fading, deterioration, etc. of the layer located below can be effectively prevented. The hard coat material may be contained in the surface layer, or may be separately coated on the surface layer and applied as a hard coat layer.

[0065] The surface layer may be transparent, or partially translucent or opaque. From the viewpoint of visibility of the decorative layer, the surface layer is preferably transparent.

[0066] The thickness of the surface layer can vary, but can be, for example, about 1 micrometer or more, about 5 micrometers or more, about 10 micrometers or more, about 20 micrometers or more, or about 30 micrometers or more, and can be about 200 micrometers or less, less than about 200 micrometers, about 180 micrometers or less, about 150 micrometers or less, about 130 micrometers or less, about 100 micrometers or less, or about 80 micrometers or less.

[0067] The sensor film of the present disclosure may use a bonding layer (sometimes called a "primer layer") to bond the layers that make up the sensor film.

[0068] The bonding layer may include, for example, a resin having a urethane bond, a (meth)acrylic resin, an epoxy resin, or a phenoxy resin, or a blend of two or more of these resins. In one embodiment, the bonding layer includes a resin blend of a resin having a urethane bond and a phenoxy resin.

[0069] The thickness of the bonding layer can be about 0.1 micrometers or more, about 0.2 micrometers or more, or about 0.5 micrometers or more, and about 10 micrometers or less, less than about 10 micrometers, about 5.0 micrometers or less, about 2.0 micrometers or less, about 1.0 micrometers or less, about 0.5 micrometers or less, or less than about 0.5 micrometers.

[0070] The sensor film may optionally include an intermediate film layer, for example, between the surface layer and the decorative layer, between the decorative layer and the non-conductive adhesive layer, or between the conductive layer and the decorative layer or the non-conductive adhesive layer, which can increase the strength of the sensor film.

[0071] The intermediate film layer may be, for example, a resin film made of a resin having a urethane bond, polyvinyl chloride, a polyolefin such as polyethylene or polypropylene, a polyester such as polyethylene terephthalate or polybutylene terephthalate, a (meth)acrylic polymer, or a fluorine-based polymer. The intermediate film layer is preferably thermoplastic.

[0072] The thickness of the intermediate film layer can be about 5.0 micrometers or more, about 10 micrometers or more, or about 15 micrometers or more, and about 200 micrometers or less, about 100 micrometers or less, or about 50 micrometers or less.

[0073] Typically, the sensor film of the present disclosure may have a release liner applied to the surface of the non-conductive adhesive layer. Examples of the release liner include paper; plastic materials such as polyethylene, polypropylene, polyester (e.g., PET), and cellulose acetate; and paper coated with such plastic materials. These liners may have a surface that has been treated with a release agent such as silicone.

[0074] The thickness of the release liner can generally be about 5 micrometers or more, about 15 micrometers or more, or about 25 micrometers or more, and can be about 500 micrometers or less, about 300 micrometers or less, or about 250 micrometers or less.

[0075] The maximum thickness of the sensor film of the present disclosure excluding the release liner is not particularly limited, and can be, for example, about 50 micrometers or more, about 70 micrometers or more, about 100 micrometers or more, about 150 micrometers or more, or about 200 micrometers or more, and can be about 500 micrometers or less, about 300 micrometers or less, or about 250 micrometers or less. When the sensor film has such a thickness, the sensor film can exhibit flexibility, and therefore, for example, it is easy to follow an uneven adherend or an adherend having a curved surface, or it is advantageous because it can be appropriately cut to a required size at a construction site where the sensor film is attached. Here, the "maximum thickness" refers to the maximum thickness in the thickness direction of the sensor film, and for example, in FIG. 1, it corresponds to the length from the top of the decorative layer 101 to the bottom of the conductive layer 105, and in FIG. 4, it corresponds to the length from the top of the decorative layer 401 to the bottom of the conductive reaction part 407. The maximum thickness is an average value of values ​​measured at three arbitrary points using a micrometer (model number: VL-50S) manufactured by Mitutoyo Corporation.

[0076] The sensor film of the present disclosure may have, in the decorative layer described above, for example, a figure or pattern (e.g., a switch button) that allows the position of a switch or the like to be identified, or may have such a figure or pattern formed, for example, in or on the surface layer, separate from the decorative layer.

[0077] Each layer constituting the sensor film of the present disclosure may contain, as optional components, for example, fillers, reinforcing agents, antioxidants, flame retardants, ultraviolet absorbers, light stabilizers, heat stabilizers, dispersants, plasticizers, flow improvers, surfactants, leveling agents, silane coupling agents, tackifier resins, catalysts, crosslinking agents, pigments, dyes, etc., within the range that does not adversely affect the effects of the present disclosure. The optional components may be used alone or in combination of two or more. The individual and total amounts of the optional components may be determined within the range that does not impair the properties required for each layer.

[0078] The sensor film of the present disclosure may be, for example, a sheet product, a rolled product, or a three-dimensional object. Unlike a general touch panel, the sensor film of the present disclosure can exhibit flexibility that allows it to be rolled up.

[0079] The sensor film of the present disclosure may function as a contact sensor or a non-contact sensor. These can be set to be contact or non-contact by, for example, appropriately specifying a threshold value for the capacitance evaluation value to be detected. The capacitance evaluation value can be obtained using software Capacitive Film Sensor Configuration Tool Ver 1.0.5746.32822 included with the capacitance control board (model number ADFCS01, manufactured by Bit Trade One Co., Ltd. (Sagamihara City, Kanagawa Prefecture, Japan)).

[0080] When the sensor film of the present disclosure is made to function as a contact or non-contact sensor, the sensor film can be designed so that the sensor reacts according to the type of object that contacts or is brought close to the sensor film. In the sensor film of the present disclosure, for example, when the contact object is a hand, the sensor film can exhibit a capacitance evaluation value of about 7,000 to about 9,000, when the contact object is a finger, the sensor film can exhibit a capacitance evaluation value of about 2,000 to about 4,000, when the contact object is a shoe, the sensor film can exhibit a capacitance evaluation value of about 2,000 to about 3,000, and when the contact object is a smartphone, the sensor film can exhibit a capacitance evaluation value of about 1,000 to about 2,000. In this way, the sensor film of the present disclosure can detect the difference in capacitance evaluation value according to the object that contacts or is brought close to the sensor film. Therefore, the sensor film of the present disclosure can also be designed so that the sensor reacts according to the type of object that contacts or is brought close to the sensor film. There are no particular limitations on the type of object that may come into contact with or be brought close to, and examples include parts of the human body (e.g., fingers, hands, noses, arms, elbows, nails, back, buttocks, legs, feet, knees, chest, abdomen), shoes, clothes, stationery (e.g., pens), cards (e.g., entrance cards, commuter passes), mobile phones (e.g., smartphones), and tires.

[0081] In addition, the sensor film of the present disclosure can detect a difference in capacitance evaluation value according to the time or number of times an object comes into contact with or is brought close to the sensor film. Therefore, the sensor film of the present disclosure can be designed so that the sensor reacts according to at least one selected from the group consisting of the time and the number of times an object comes into contact with or is brought close to the sensor film.

[0082] The capacitance evaluation value that can be exhibited when an object comes into contact with or approaches the sensor film is not particularly limited as long as it can function as a sensor. The sensor film of the present disclosure can exhibit a capacitance evaluation value of, for example, about 100 or more, about 200 or more, about 500 or more, about 700 or more, or about 1,000 or more, and about 30,000 or less, 20,000 or less, 15,000 or less, or 10,000 or less.

[0083] The method for producing the sensor film of the present disclosure is not particularly limited, and the sensor film can be produced, for example, by the following procedure.

[0084] For example, the sensor film of the present disclosure can be manufactured by forming a decorative layer, a non-conductive adhesive layer, and optionally additional layers on a release liner using a coating method or the like, and then applying a conductive layer of a predetermined size on the non-conductive adhesive layer. Furthermore, a release liner may be laminated on the non-conductive adhesive layer so as to cover the conductive layer. Here, as the coating method, for example, a known method such as a knife coater, a die coater, a roll coater, a bar coater, a cast coater, a notch bar coater, a gravure coater, and a rod coater can be used.

[0085] According to one embodiment of the present disclosure, there is provided a laminate in which the sensor film of the present disclosure is adhered to an adherend via a non-conductive adhesive layer, and an electrode is in contact with at least a part of the conductive layer. Note that the above-mentioned conductive reaction part is not limited to the sensor film, and may be applied to the adherend, or may be applied to both the sensor film and the adherend.

[0086] The material of the adherend is not particularly limited, and examples thereof include resin materials (e.g., polyolefin resins, polyester resins, (meth)acrylic resins, polycarbonate resins, acrylonitrile-butadiene-styrene copolymers), inorganic materials (e.g., glass, ceramics, concrete, gypsum, calcium silicate, natural stone, asphalt), rubber materials, fabric materials (e.g., woven fabrics, knitted fabrics, nonwoven fabrics), and wood materials. The surface of the adherend may be subjected to a surface treatment, painting, or the like. For example, when an insulating treatment (painting, etc.) is applied to the adherend, a metal or metal alloy material (e.g., iron, aluminum, stainless steel) can also be used as the material of the adherend.

[0087] The shape of the adherend is not particularly limited, and may be, for example, a flat shape such as a film or plate, a curved shape, or various three-dimensional shapes.

[0088] In the laminate of the present disclosure, for example, as shown in the center left of Fig. 9, an electrode is connected to the conductive layer of the sensor film. This generates capacitance when an object comes into contact with the sensor film or is brought close to the sensor film, and the change in capacitance can be utilized to realize a sensor function such as a switch.

[0089] Typically, the electrodes can be brought into contact with a conductive layer present in an area where a change in capacitance is to be detected when an object touches the sensor film or when an object is brought close to the sensor film. For example, the laminate including the sensor film shown on the left side of FIG. 8 has a conductive reaction part in the approximate center. Therefore, in such a laminate, the electrodes are connected to the conductive layer (the central conductive layer) that overlaps with the conductive reaction part (the upper left photograph of FIG. 9).

[0090] The material of the electrodes is not particularly limited, and examples thereof include metals or metal alloy materials (eg, copper, brass, copper-tungsten alloy, silver-tungsten alloy) and carbon-based materials (eg, graphite).

[0091] The use form of the laminate of the present disclosure is not particularly limited, and may be a moving product or a real property. For example, if the laminate is adhered to a building wall, road, etc., the laminate can be a real property. Specific examples of the use form of the laminate of the present disclosure include exterior or interior materials used in vehicles (e.g., automobiles, motorcycles, trains), aircraft, ships, and buildings and structures (e.g., various rooms, doors, windows, floors, kitchens, washrooms, bridges, roads in houses or buildings), furniture, electrical appliances (e.g., televisions, air conditioners, refrigerators, personal computers, mobile phones, lighting), signs, guides, signs, advertisements, posters, and mats.

[0092] A system can also be constructed using the laminate of the present disclosure. Such a system can include, for example, the laminate of the present disclosure, a control circuit connected to the electrodes of the laminate, and a power source, and can be configured to drive an electric device by controlling a signal related to the capacitance generated from the sensor film of the present disclosure configured in the laminate with the control circuit. Here, in the present disclosure, "driving an electric device" includes not only operating the electric device, but also stopping the electric device, operating the electric device, and the like.

[0093] Although the system of the present disclosure is not limited to the following, an example thereof will be described below with reference to FIGS.

[0094] The sample on the upper left side in FIG. 8 corresponds to the laminate of the present disclosure, and the sample on the upper right side corresponds to the electric device of the present disclosure. As shown in FIG. 9, the laminate of the present disclosure has electrodes connected to the conductive layers of the sensor film constituting the laminate, and the power supply unit corresponding to the power source, the control circuit, and the member equipped with the display type LED module corresponding to the electric device are connected to form a circuit as a whole through lead wires applied to the electrodes. When a finger or the like touches the sensor reaction part (the part where the conductive reaction part exists) in the sensor film of the present disclosure constituting the laminate of such a system, as shown in FIG. 7, a signal related to the electrostatic capacitance generated from the sensor film is generated, and the signal is controlled by the control circuit to drive the LED module, and the LED is turned on or off.

[0095] In the system of the present disclosure, as shown in Figs. 7 to 9, the laminate and the electric device may be configured as separate bodies, or they may be configured as an integrated body.

[0096] The electric device is not particularly limited, and examples thereof include electrical appliances (e.g., lighting, air conditioners, refrigerators, microwave ovens, telephones, televisions, personal computers, projectors, water heaters, monitors, electric locking devices, automatic doors); various electric devices (e.g., car navigation systems, audio systems) in vehicles such as automobiles, motorcycles, trains, aircraft, ships, etc.; and detection devices for detecting people, animals, vehicles (e.g., automobiles, motorcycles, bicycles, wheelchairs), etc. The detection device may be, for example, a device equipped with a means for sensing the detection with at least one of the five senses (sight, hearing, touch, taste, smell). Examples of such means include a means for conveying the detection by images, sounds, music, smells, vibrations, etc. The electric device may also be connected to, for example, an Internet line. In such a case, other electric devices or machines can be remotely driven or operated via the Internet.

[0097] There is no particular limitation on the method of using the system of the present disclosure. For example, the system of the present disclosure may be used as a switch for operating various electrical devices, or as a detection means for detecting the arrival or passage of people, animals, vehicles, etc. at a location. Such a detection means may be configured not only to detect people, etc., but also to drive various electrical products based on the detected signal. When the system of the present disclosure is used as a detection means, the laminate of the present disclosure that may be in contact with people and vehicles may be required to have a large area. Although general touch panels and touch sensors are not suitable for large sizes, the sensor film of the present disclosure can also be used for large areas, so the system of the present disclosure can be suitably used for the detection means described above. EXAMPLES

[0098] The following examples illustrate specific embodiments of the present disclosure, but the present invention is not limited thereto.

[0099] Example 1: Use as a contact sensor and the effect of an object touching the conductive reaction part A decorative film (3M) having a gravure printed decorative layer about 1.5 micrometers thick and a non-conductive acrylic resin pressure-sensitive adhesive layer about 0.5 micrometers thick. TM Dinoc TM The adhesive layer was a double-sided conductive tape (3M Japan Co., Ltd., Chuo-ku, Tokyo, Japan) with a thickness of about 50 micrometers and a width of about 0.5 cm, made of nickel-plated polyester nonwoven fabric with a conductive adhesive layer on both sides. TM As shown in Figure 5, three pieces of double-sided conductive tape (CN4490, manufactured by 3M Japan Ltd., Chuo-ku, Tokyo, Japan) were placed at approximately equal intervals from one end of the decorative film to the other to form a conductive layer. Next, a double-sided conductive tape cut into an approximately circular shape with a diameter of approximately 10 cm was attached to approximately the center of the conductive layer located approximately in the center to form a conductive reaction part, thereby producing a decorative capacitive sensor film.

[0100] A copper electrode was connected near one end of the conductive layer located approximately at the center of the obtained decorative capacitance-type sensor film, and a lead wire was further connected to this electrode, and then the film was attached to a gypsum board to prepare a laminate. The obtained laminate, a control circuit (model number M5 Stack, manufactured by M5Stack Technology Co., Ltd. (China)), and a power supply unit (model number BTF-50-5, manufactured by BTF-LIGHTING Technology Co., Ltd. (China)) were connected through the lead wire of the laminate so that they constituted a circuit as a whole, to construct a system. The capacitance evaluation value was obtained using the software Capacitive Film Sensor Configuration Tool Ver 1.0.5746.32822 included in the capacitance control board (model number ADFCS01, manufactured by Bit Trade One Co., Ltd. (Sagamihara City, Kanagawa Prefecture, Japan)).

[0101] When nothing was in contact with the conductive reaction unit of the obtained system, the capacitance evaluation value was about 0. On the other hand, when the conductive reaction unit was touched by a hand, the capacitance evaluation value was about 7,000 to about 9,000, when it was touched by a finger, the capacitance evaluation value was about 2,000 to about 4,000, when it was touched by a shoe sole, the capacitance evaluation value was about 2,000 to about 3,000, and when it was touched by a smartphone, the capacitance evaluation value was about 1,000 to about 2,000.

[0102] From the above results, it was confirmed that the sensor film of the present disclosure can be used as a contact-type sensor. Since different objects contacting the conductive reaction part generate different capacitance evaluation values, it was also confirmed that the sensor can react depending on the type of object it contacts.

[0103] Example 2: Effects of time and frequency of contact of objects Using the system of Example 1, the effects of time and number of times an object comes into contact with the conductive reactive portion were examined.

[0104] It was confirmed that when the conductive reaction area was touched with a finger once, twice, or three times, the capacitance evaluation value changed depending on the timing of the touch.

[0105] It was confirmed that by changing the time that the finger touches the conductive reaction part, the capacitance evaluation value also changes accordingly.

[0106] From the above results, it was confirmed that the sensor can be made to react according to the time or number of times an object comes into contact with it.

[0107] Example 3: Use as a non-contact sensor Using the system of Example 1, it was examined whether the sensor film of the present disclosure can be used as a non-contact sensor.

[0108] It was confirmed that when a hand was brought close to the conductive reaction part without touching it, the capacitance evaluation value, which was approximately 0, changed to approximately 200 to 300.

[0109] From the above results, it was confirmed that the sensor film of the present disclosure can be used as a non-contact sensor.

[0110] Example 4: Use as a sensor (switch) A system was constructed in the same manner as in Example 1, except that a device equipped with a display type module as shown in Figures 8 and 9 was used instead of the capacitance detection device. Here, the device equipped with a display type module was produced as follows.

[0111] The center of a support material (white calcium silicate board) measuring approximately 30 cm x approximately 30 cm x approximately 6 mm was cut out into a roughly square shape measuring approximately 16 cm x approximately 16 cm, as shown on the right side of Figure 9, and then a transparent polyvinyl chloride board measuring approximately 30 cm x approximately 30 cm x approximately 1 mm and the decorative film used in Example 1 were attached in that order to one side of the support material. Next, a display type module (model number WS2812B, manufactured by BTF-LIGHTING Technology Co., Ltd. (China)) was installed in the cut-out part of the support material, and a heat sink was further applied to produce an electrical device equipped with a display type module.

[0112] When the conductive reaction part in the obtained system was touched with a hand, the LED lit up as shown in Figure 7.

[0113] From the above results, it was also confirmed that the sensor film of the present disclosure can be used as a sensor (e.g., a switch).

[0114] It will be apparent to those skilled in the art that the above-described embodiments and examples can be modified in various ways without departing from the basic principles of the present invention, and that various improvements and modifications of the present invention can be made without departing from the spirit and scope of the present invention. [Explanation of symbols]

[0115] 100, 200, 300, 400, 500 Decorative Capacitive Sensor Film 101, 201, 301, 401 Decorative layer 103, 203, 303, 403 Non-conductive adhesive layer 105, 205, 305, 405, 505 Conductive layer 407, 507 Conductive reaction part 509 Adherent

[0116] Some of the embodiments of the present disclosure are described in [Item 1] to [Item 14] below. [Item 1] a decorative layer, at least one conductive layer, and a non-conductive adhesive layer; The conductive layer is disposed within the non-conductive adhesive layer and / or on one or both sides of the non-conductive adhesive layer, and extends in the in-plane direction of the non-conductive adhesive layer. Decorative capacitive sensor film. [Item 2] Item 1. The film of item 1, further comprising a conductive reactant. [Item 3] 3. The film according to claim 2, wherein the conductive reaction portion has an area that exceeds at least a portion of at least one of the conductive layers. [Item 4] Item 4. The film according to item 2 or 3, wherein the conductive reaction portion is disposed on the outermost surface. [Item 5] Item 4. The film according to item 2 or 3, wherein the conductive reaction portion is disposed on the non-conductive adhesive layer side of the outermost surface. [Item 6] 4. The film of claim 2 or 3, wherein the conductive reaction portion is applied to the non-conductive adhesive layer. [Item 7] 7. The film according to any one of items 1 to 6, wherein the conductive layer is a conductive adhesive layer. [Item 8] 8. The film according to any one of items 1 to 7, wherein the conductive layers are arranged in a substantially linear, substantially wavy, or substantially zigzag shape. [Item 9] 9. The film according to any one of items 1 to 8, which is a contact sensor. [Item 10] 10. The film of item 9, wherein the sensor reacts depending on the type of object it comes into contact with. [Item 11] 10. The film according to item 9, wherein the sensor reacts in response to at least one selected from the group consisting of time and number of times when an object contacts the film. [Item 12] 9. The film according to any one of items 1 to 8, which is a non-contact sensor. [Item 13] 13. A laminate comprising the film according to any one of items 1 to 12, which is attached to an adherend via the non-conductive adhesive layer, and an electrode is in contact with at least a portion of the conductive layer. [Item 14] Item 14. A laminate according to item 13, and a control circuit and a power source connected to the electrodes of the laminate, A system in which signals produced by said films of said laminate are controlled by said control circuitry to drive an electrical device.

Claims

1. It comprises a decorative layer, at least one conductive layer, and a non-conductive adhesive layer. The conductive layer is disposed inside the nonconductive adhesive layer and / or on one or both sides of the nonconductive adhesive layer, and extends in the in-plane direction of the nonconductive adhesive layer. Decorative capacitive sensor film.

2. The film according to claim 1, further comprising a conductive reaction portion.

3. The film according to claim 2, wherein the conductive reaction portion has an area exceeding at least a portion of at least one of the conductive layers.

4. The film according to claim 2 or 3, wherein the conductive reaction portion is arranged on the outermost surface.

5. The film according to claim 2 or 3, wherein the conductive reaction portion is located on the non-conductive adhesive layer side of the outermost surface.

6. The film according to claim 2 or 3, wherein the conductive reaction portion is applied to the non-conductive adhesive layer.

7. The film according to claim 1 or 2, wherein the conductive layer is a conductive adhesive layer.

8. The film according to claim 1 or 2, wherein the conductive layer is arranged in a substantially linear, substantially wavy, or substantially zigzag pattern.

9. A contact sensor or a non-contact sensor, When the sensor film is a contact-type sensor, the sensor reacts according to the type of object that comes into contact with it. When the sensor film is a non-contact type sensor, the sensor reacts according to the type of object brought near it. The film according to claim 1 or 2.

10. A contact sensor or a non-contact sensor, When the sensor film is a contact-type sensor, the sensor reacts in accordance with at least one selected from the group consisting of the time and number of times an object comes into contact with the sensor. When the sensor film is a non-contact type sensor, the sensor reacts in accordance with at least one selected from the group consisting of the time and number of times an object is brought close to the sensor. The film according to claim 1 or 2.

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