Sheet-like device

Abstract

To provide a sheet-like device which allows removal of a communication unit by a simple constitution.SOLUTION: A sheet-like device 1 comprises: a sheet-like first base material 2; a sheet-like second base material 3 removable from the first base material 2; a power source part 5 positioned between the first base material 2 and the second base material 3; and a communication unit 6 which operates with power supplied from the power source part 5 and is capable of wireless communication with the outside. The communication unit 6 is provided on the first base material 2 side of the second base material 3.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a sheet-like device that has a communication function and is used in a state where it is attached to an object. [Background technology]

[0002] Sheet-like devices that are used in a state where they are attached to an object are known. For example, Patent Document 1 discloses a device that is used in a state where it is directly attached to the skin. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-63230 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, when a device is used while attached to an object, the user of the device may wish to take it home after use, while the provider of the device may wish to collect it. Furthermore, regardless of the user's wishes, for example, in the case of a sheet-like device that is used with its adhesive part attached to the surface of an object, it may be difficult to remove the device from the surface of the object after use.

[0005] Furthermore, if the device has a communication unit and a sensor, it is desirable to recover and reuse the communication unit and the sensor from the device after use. The production of the communication unit and the sensor and other circuits generates the most CO2 emissions. Therefore, recovering the communication unit and the sensor can lead to a reduction in the environmental load. In other words, it can contribute to the achievement of Goal 12 (Ensure sustainable consumption and production systems) and Goal 13 (Take urgent measures to mitigate climate change and its impacts) of the SDGs.

[0006] Therefore, in a sheet-like device that is used while attached to an object, a simple configuration is desired that allows the communication unit and the like to be detached from the object.

[0007] An object of the present invention is to realize a sheet-like device with a simple configuration from which a communication unit and the like can be detached. [Means for solving the problem]

[0008] A sheet-like device according to an embodiment of the present invention is a sheet-like device that is used in a state of being attached to an object. This sheet-like device has a first sheet-like substrate, a second sheet-like substrate releasably provided on the first substrate, a power supply unit located between the first substrate and the second substrate, and a communication unit that operates with power supplied from the power supply unit and is capable of wireless communication with the outside. The communication unit is provided on a surface of the second substrate facing the first substrate (first configuration).

[0009] In the above-mentioned configuration, the communication unit can be separated from the first substrate together with the second substrate by peeling the second substrate from the first substrate. This allows the communication unit to be removed from the first substrate after the sheet-like device is attached to an object and used, while the first substrate is left on the object. Thus, a sheet-like device from which the communication unit can be removed can be realized with a simple configuration.

[0010] The sheet-like device according to the first configuration further includes a detection unit that detects a state of the object. The detection unit is provided on a surface of the second substrate facing the first substrate and operates with power supplied from the power supply unit. The communication unit transmits a detection result by the detection unit to an outside (second configuration).

[0011] In this configuration, the communication unit and the detection unit operate using power supplied from a power supply unit. The detection unit can detect the state of the object. The communication unit can transmit the state of the object detected by the detection unit to the outside. For example, when the detection unit is a GPS sensor, the detection unit can detect the position of the object to which the sheet-like device is attached. The communication unit can transmit the position information of the object to the outside. Also, for example, when the detection unit is a temperature sensor, the detection unit can measure the temperature of the object to which the sheet-like device is attached. The communication unit can transmit the temperature of the object to the outside. In this way, the sheet-like device having the above-mentioned configuration makes it possible to check the state of the object at a location away from the object.

[0012] In the first or second configuration, the power supply unit is provided on a surface of the first base material facing the second base material (third configuration).

[0013] By peeling the second substrate from the first substrate, the communication unit disposed on the second substrate and the power supply unit disposed on the first substrate can be separated, whereby the operation of peeling the second substrate from the first substrate can stop the supply of power from the power supply unit to the communication unit.

[0014] In the first or second configuration, the power supply unit is an air battery having an air hole in at least a part thereof (fourth configuration).

[0015] By configuring the power supply unit as an air battery that starts discharging with air, the timing at which the air battery starts discharging can be easily controlled, and the timing at which power is supplied from the power supply unit to the communication unit can be easily controlled.

[0016] In the fourth configuration, the positive electrode side of the air battery faces the second base material, and the second base material has a hole at a position overlapping the air hole of the air battery when viewed in the thickness direction of the sheet-like device (fifth configuration).

[0017] This allows an air battery to be disposed between the first and second substrates, and air can be supplied to the air battery through the holes in the second substrate. This allows power to be supplied from the air battery to the communication unit. This configuration also allows air to be efficiently supplied to the positive electrode of the air battery.

[0018] In the fifth configuration, the hole of the second base material is covered with a waterproof and breathable protective sheet (sixth configuration).

[0019] As a result, the protective sheet covering the hole in the second substrate can prevent water from entering the air holes of the air battery and the hole in the second substrate. Therefore, even in an environment where the sheet-like device is exposed to water, the air battery can take in air, so that power can be stably supplied from the air battery to the communication unit. Furthermore, deterioration of the air battery can be prevented. Therefore, deterioration of the performance of the sheet-like device can be prevented.

[0020] The sheet-like device of the fourth configuration further includes a cover portion releasably provided on the second substrate on the side opposite to the first substrate, the cover portion being disposed on the second substrate so as to overlap the air hole of the air battery when viewed in the thickness direction of the sheet-like device (seventh configuration).

[0021] In the above-mentioned configuration, the supply of air to the air battery can be started by peeling off the cover from the second base material, which makes it possible to control the start of power supply to the communication unit with a simple configuration.

[0022] In the fourth configuration, the air hole of the air battery is covered with a waterproof and breathable protective sheet (eighth configuration).

[0023] This makes it possible to more reliably waterproof the air battery. Therefore, even in a water-soaked environment, the sheet-like device operates stably. Furthermore, it is possible to more reliably prevent the air battery from deteriorating. Therefore, it is possible to more reliably prevent the performance of the sheet-like device from deteriorating.

[0024] In the first or second configuration, the first base material includes a plurality of layers stacked in a thickness direction, and the power supply unit is provided on a surface of the first base material side of a layer other than a layer closest to the second base material among the plurality of layers of the first base material (ninth configuration).

[0025] This allows the layer of the exposed surface of the first base material, which is exposed when the second base material is peeled off, and the layer other than the exposed surface to which the power supply unit is connected, among the multiple layers of the first base material, to be manufactured separately. This allows, for example, the layer of the exposed surface of the first base material and the layer other than the exposed surface to have different shapes, sizes, etc., or to be made of different materials. This allows for improved freedom in designing the exposed surface of the first base material, which is exposed when the second base material is peeled off.

[0026] In the first or second configuration, the second base material includes a plurality of layers stacked in a thickness direction (tenth configuration).

[0027] As a result, among the multiple layers of the second substrate, the layer of the exposed surface of the second substrate that is exposed to the outside when the sheet-like device is used and the layer other than the exposed surface that has the communication unit can be manufactured separately. As a result, for example, the layer of the exposed surface of the second substrate and the layer other than the exposed surface can be made to have different shapes, sizes, etc., or made of different materials. Therefore, the degree of freedom in designing the exposed surface of the second substrate that is exposed to the outside when the sheet-like device is used can be improved.

[0028] In the first or second configuration, the first base material has an adhesive portion on a surface opposite to the second base material (eleventh configuration).

[0029] With this configuration, the sheet-like device can be attached to an object and used. Furthermore, with the sheet-like device attached to the object, the communication unit can be separated from the first substrate together with the second substrate. That is, with the first substrate attached to the object, the communication unit can be removed from the first substrate. Thus, a sheet-like device can be realized in which the communication unit can be easily removed from the first substrate while the first substrate is left on the object. Effect of the Invention

[0030] According to an exemplary embodiment of the present invention, the communication unit can be easily removed from the first substrate by peeling the second substrate from the first substrate, and thus a sheet-like device from which the communication unit can be removed can be realized with a simple configuration. [Brief description of the drawings]

[0031] [Figure 1] FIG. 1 is a diagram illustrating a schematic configuration of a sheet-like device according to the first embodiment. [Diagram 2] FIG. 2 is a diagram showing a state in which the second substrate of the sheet-like device according to embodiment 1 has been peeled off from the first substrate. [Diagram 3] FIG. 3 is a diagram illustrating a schematic configuration of a sheet-like device according to the second embodiment. As shown in FIG. [Figure 4] FIG. 4 is a diagram illustrating a schematic configuration of an air battery. [Diagram 5] FIG. 5 is a diagram illustrating a state in which the sheet-like device according to the second embodiment is used. [Figure 6] FIG. 6 is a diagram illustrating the state of the sheet-like device according to embodiment 2 after use. [Figure 7]FIG. 7 is a diagram illustrating a schematic configuration of a sheet-like device according to a modified example of the second embodiment. As shown in FIG. [Figure 8] FIG. 8 is a diagram illustrating a schematic configuration of a sheet-like device according to the third embodiment. As shown in FIG. [Figure 9] FIG. 9 is a diagram illustrating a state in which the sheet-like device according to the third embodiment is used. [Figure 10] FIG. 10 is a diagram illustrating a state after use of the sheet-like device according to embodiment 3. As shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0032] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference characters and the description thereof will not be repeated.

[0033] In addition, in each figure used in this specification, the arrangement of each component is shown diagrammatically to explain the interrelationships between each component in the sheet-like device of the present invention, and differs from the actual dimensional ratios, etc.

[0034] In the following description, the thickness direction of the sheet-like device is referred to as the thickness direction. In addition, in the thickness direction, the side where the second base material is located relative to the first base material is referred to as the other side in the thickness direction, and the opposite side is referred to as one side in the thickness direction.

[0035] (Embodiment 1) A sheet-like device 1 according to a first embodiment will be described with reference to Figs. 1 and 2. The sheet-like device 1 is a device that is used in a state where it is attached to the surface of an object M. The sheet-like device 1 is flexible. The sheet-like device 1 may be a disposable device that is discarded after use. The object M to which the sheet-like device 1 is attached may be an object, a person, or a living thing. The surface of the object M may be hard or soft.

[0036] 1 is a diagram illustrating a schematic configuration of a sheet-like device 1. As illustrated in FIG. 1 and FIG. 2, the sheet-like device 1 includes a first substrate 2, a second substrate 3, a power supply unit 5, and a communication unit 6.

[0037] The first substrate 2 is sheet-shaped. The first substrate 2 has an adhesive portion 21. The adhesive portion 21 is provided on one surface in the thickness direction. The first substrate 2 is attached to the object M via the adhesive portion 21. By attaching the adhesive portion 21 to the object M, the communication unit 6 of the sheet-like device 1 is attached to the object M. The adhesive portion 21 may be provided on the entire surface of one surface in the thickness direction of the first substrate 2, or may be provided on a part of the surface.

[0038] The adhesive portion 21 includes an adhesive. The adhesive is, for example, a silicon-based adhesive, an acrylic-based adhesive, or a rubber-based adhesive.

[0039] The other surface in the thickness direction of the first base material 2 is coated with a release agent (not shown).

[0040] The second substrate 3 is sheet-shaped. The second substrate 3 is located on the other side in the thickness direction relative to the first substrate 2. The second substrate 3 overlaps the first substrate 2 in the thickness direction. That is, one surface of the second substrate 3 in the thickness direction is in contact with the other surface of the first substrate 2 in the thickness direction.

[0041] The adhesive (not shown) is applied to the surface of the second substrate 3 facing the first substrate 2. The second substrate 3 is adhered to the first substrate 2 by the adhesive. As described above, the surface of the first substrate 2 facing the second substrate 3 is coated with a release agent. Therefore, the second substrate 3 can be peeled off from the first substrate 2. FIG. 2 is a diagram showing the state in which the second substrate 3 has been peeled off from the first substrate 2.

[0042] The power supply unit 5 is a power supply source for the sheet-like device 1. The power supply unit 5 is located between the first substrate 2 and the second substrate 3. The power supply unit 5 is, for example, a battery formed in a sheet shape and having flexibility. The power supply unit may be, for example, a coin-type battery having a small thickness dimension, as long as it does not impede the flexibility of the sheet-like device. The power supply unit may be provided on the other surface of the first substrate in the thickness direction, or on one surface of the second substrate 3 in the thickness direction.

[0043] The communication unit 6 is provided on one surface of the second base material 3 in the thickness direction. The communication unit 6 is electrically connected to the power supply unit 5 by wiring (not shown). The communication unit 6 operates using power supplied from the power supply unit 5. The communication unit 6 and the power supply unit 5 may be electrically connected to each other by a wiring pattern disposed on the second base material 3.

[0044] The communication unit 6 is configured to be capable of wireless communication with the outside. The communication unit 6 may be, for example, a transmitter that transmits a signal to the outside, or a receiver that receives a signal from the outside.

[0045] The communication unit 6 may be configured to receive radio waves from, for example, multiple antennas located in the vicinity. In this case, for example, the position of the object M to which the sheet-like device 1 is attached can be detected based on the strength of the radio waves received from each of the multiple antennas.

[0046] As described above, the second substrate 3 can be peeled off from the first substrate 2. Therefore, when communication with the outside is no longer necessary, the communication unit 6 can be removed from the target M by peeling the second substrate 3 off from the first substrate 2. In this manner, in the sheet-like device 1, the communication unit 6 can be easily removed from the target M. Note that the communication unit 6 removed from the target M may be reused.

[0047] As described above, the sheet-like device 1 according to this embodiment is a sheet-like device 1 having an adhesive portion 21 for attaching to an object M. The sheet-like device 1 has a sheet-like first substrate 2 having an adhesive portion 21 on one surface thereof, a sheet-like second substrate 3 releasably provided on the side opposite to the adhesive portion 21 side of the first substrate 2, a power supply unit 5 located between the first substrate 2 and the second substrate 3, and a communication unit 6 that operates with power supplied from the power supply unit 5 and is capable of wireless communication with the outside. The communication unit 6 is provided on the surface of the second substrate 3 facing the first substrate 2.

[0048] In the sheet-like device 1 of the present embodiment, by peeling the second substrate 3 from the first substrate 2, the communication unit 6 can be separated from the first substrate 2 together with the second substrate 3. As a result, after the sheet-like device 1 is attached to the object M and used, the communication unit 6 can be removed from the object M while the first substrate 2 is left on the object M. Therefore, it is possible to provide a sheet-like device 1 with a simple configuration from which the communication unit 6 can be removed. In addition, the communication unit 6 removed from the object M can be reused.

[0049] (Embodiment 2) Next, a sheet-like device 101 according to embodiment 2 will be described with reference to Fig. 3 to Fig. 6. In the sheet-like device 101, as in embodiment 1, when the second substrate 103 is not peeled off from the first substrate 102, one surface of the second substrate 103 in the thickness direction is in contact with the other surface of the first substrate 102 in the thickness direction. However, in each drawing, the second substrate 103 is shown separated from the first substrate 102 for the sake of explanation. In each drawing, a dashed line connects members shown separated for the sake of explanation.

[0050] Fig. 3 is a diagram showing a schematic configuration of the sheet-like device 101. As shown in Fig. 3, the sheet-like device 101 has a first substrate 102, a second substrate 103, a power supply unit 105, a communication unit 106, a detection unit 107, a first cover unit 122, and a second cover unit 104. The first cover unit 122, the first substrate 102, the second substrate 103, and the second cover unit 104 are overlapped in the thickness direction.

[0051] The first base material 102 is in a sheet shape. The first base material 102 has an adhesive portion 121 on one surface in the thickness direction. The adhesive portion 121 of the first base material 102 is covered with a first cover portion 122.

[0052] The first cover portion 122 covers one surface in the thickness direction of the first base material 102. The other surface in the thickness direction of the first cover portion 122 is coated with a release agent. Therefore, the first cover portion 122 can be peeled off from the first base material 102. By peeling the first cover portion 122 off from the first base material 102, the adhesive portion 121 is exposed.

[0053] The first base material 102 is attached to the object M via the adhesive portion 121. By attaching the adhesive portion 121 to the object M, the communication unit 106 and the detection unit 107 of the sheet-like device 101 are attached to the object M.

[0054] A power supply unit 105 is provided on the other surface of the first base material 102 in the thickness direction.

[0055] The second base material 103 is in a sheet shape and overlaps the first base material 102 in the thickness direction.

[0056] The second base material 103 has a hole 131 penetrating in the thickness direction. The hole 131 is covered by a protective sheet 108. Note that, in FIG. 3, the protective sheet 108 is located on the other side in the thickness direction with respect to the second base material 103, but the protective sheet may be located on one side in the thickness direction with respect to the second base material. The protective sheet may be located on both one side and the other side in the thickness direction with respect to the second base material. The position where the hole 131 is provided will be described later.

[0057] The protective sheet 108 is a waterproof and breathable film, which contains, for example, a fluororesin such as PTFE.

[0058] The communication unit 106 and the detection unit 107 are provided on one surface of the second base material 103 in the thickness direction. The second base material 103 may have a substrate having a wiring pattern (not shown) on the one surface. In this case, the communication unit 106 and the detection unit 107 may be provided on the substrate.

[0059] Similarly to the first embodiment, the second substrate 103 is provided so as to be releasable from the first substrate 102. In the present embodiment, by peeling the second substrate 103 from the first substrate 102, the communication unit 106 and the detection unit 107 are separated from the first substrate 102 together with the second substrate 103. As a result, the communication unit 106 and the detection unit 107 are removed from the object M.

[0060] At this time, when the communication unit 106 and the detection unit 107 are provided on the substrate (not shown), the communication unit 106 and the detection unit 107 may be configured to be detached from the target object M together with the substrate by peeling off the second base material 103.

[0061] The other surface of the second base material 103 in the thickness direction is coated with a release agent. The other surface of the second base material 103 in the thickness direction is covered with a second cover portion 104.

[0062] The second cover portion 104 covers the other surface in the thickness direction of the second base material 103. An adhesive is applied to the surface of the second cover portion 104 facing the second base material 103. Therefore, the second cover portion 104 is peelable from the second base material 103. The second cover portion 104 corresponds to the cover portion of the present invention.

[0063] The power supply unit 105 is provided on the other surface in the thickness direction of the first base material 102. The power supply unit 105 supplies power to the communication unit 106 and the detection unit 107. In this embodiment, the power supply unit 105 is an air battery 105a.

[0064] 4 is a diagram showing a schematic configuration of an air battery 105a. The air battery 105a is in a sheet shape. The air battery 105a has a positive electrode 151, a negative electrode 152, a separator 153 disposed between the positive electrode 151 and the negative electrode 152, and an electrolyte (not shown). The positive electrode 151, the negative electrode 152, and the separator 153 are each formed in a sheet shape. The positive electrode 151, the negative electrode 152, the separator 153, and the electrolyte are sealed by an exterior body 154 on the positive electrode side and an exterior body 155 on the negative electrode side.

[0065] An air hole 154a is formed in the exterior body 154 on the positive electrode side. Air (oxygen), which is a positive electrode active material, is supplied from the air hole 154a to the positive electrode 151. The air battery 105a functions as a battery when air is supplied thereto.

[0066] 3, the air battery 105a has the negative electrode 152 side fixed to the other surface in the thickness direction of the first substrate 102. The positive electrode 151 side of the air battery 105a faces the second substrate 103. In other words, the air hole 154a of the air battery 105a is located on the second substrate 103 side.

[0067] As described above, the second substrate 103 has holes 131. When viewed in the thickness direction, the holes 131 are located at positions overlapping with the air holes 154a of the air battery 105a. Therefore, even when the air battery 105a is located between the first substrate 102 and the second substrate 103, air can be supplied to the air battery 105a. The second substrate may have holes in the same number as the air holes so as to overlap each of the air holes when viewed in the thickness direction, or may have holes in a number less than the air holes so as to overlap a plurality of air holes.

[0068] As described above, the hole 131 of the second base material 103 is covered by the protective sheet 108. Therefore, air can be supplied to the air battery 105a, while moisture is prevented from entering the inside of the air battery 105a through the air hole 154a. Therefore, even in an environment where the sheet-like device 101 is exposed to water, the air battery 105a can supply electricity, and further, the air battery 105a can be prevented from deteriorating. Therefore, the performance of the sheet-like device 101 can be prevented from decreasing.

[0069] The protective sheet may be disposed between the positive electrode of the air battery and the exterior body on the positive electrode side, or may be disposed on the outer surface of the exterior body on the positive electrode side of the air battery. This makes it possible to more reliably waterproof the air battery. Therefore, even in a water-soaked environment, the sheet-like device 101 operates stably, and further, deterioration of the air battery can be more reliably prevented. Therefore, deterioration of the performance of the sheet-like device 101 can be more reliably prevented.

[0070] The communication unit 106 is provided on one surface of the second base material 103 in the thickness direction. The communication unit 106 is electrically connected to the power supply unit 105 by wiring (not shown). The communication unit 106 operates by power supplied from the power supply unit 105. Note that the communication unit 106 and the power supply unit 105 may be electrically connected by a wiring pattern arranged on the second base material 103.

[0071] The communication unit 106 is configured to be capable of wireless communication with the outside. In this embodiment, the communication unit 106 is capable of transmitting, for example, a detection result detected by a detection unit 107 (to be described later) to the outside.

[0072] The detection unit 107 is provided on one surface of the second base material 103 in the thickness direction. The detection unit 107 is electrically connected to the power supply unit 105 by wiring (not shown). The detection unit 107 operates by power supplied from the power supply unit 105. Note that the communication unit 106 and the power supply unit 105 may be electrically connected by a wiring pattern arranged on the second base material 103.

[0073] The detection unit 107 detects the state of the object M and the surrounding conditions of the object M. The detection unit 107 is, for example, a sensor that detects the state of the object M. The detection unit 107 may be, for example, a GPS sensor that acquires location information, a temperature sensor that detects the temperature of the object M, a proximity sensor that detects an approaching object, or the like. The detection unit 107 may have, for example, a built-in camera.

[0074] For example, when the detection unit 107 is a GPS sensor, the detection unit 107 can detect the position of the object M to which the sheet-like device 101 is attached. The communication unit 106 can transmit the position information of the object M to the outside. Also, for example, when the detection unit 107 is a temperature sensor, the detection unit 107 can measure the temperature of the object M to which the sheet-like device 101 is attached. The communication unit 106 can transmit the temperature of the object M to the outside.

[0075] As described above, the second base material 103 is covered by the second cover portion 104. That is, the hole portion 131 of the second base material 103 is covered by the second cover portion 104. Therefore, in a state in which the second cover portion 104 is not peeled off from the second base material 103, air is not supplied to the air hole 154a of the air battery 105a, and the air battery 105a does not function.

[0076] On the other hand, the air battery 105a functions when the second cover part 104 is peeled off from the second base material 103. That is, when the second cover part 104 is peeled off from the second base material 103, air is supplied to the air hole 154a of the air battery 105a through the hole part 131. This allows the air battery 105a to start supplying power to the communication unit 106 and the detection unit 107. Therefore, with a simple configuration, it is possible to control the timing at which the communication unit 106 and the detection unit 107 start operating.

[0077] 5, when second cover portion 104 is peeled off from second base material 103, protective sheet 108 remains on the other surface in the thickness direction of second cover portion 104. This prevents moisture from penetrating into air battery 105a.

[0078] In this way, the second cover section 104 functions as a switch for starting the power supply from the power supply section 105 to the communication section 106 and the detection section 107 .

[0079] In the sheet-like device 101 having the above-mentioned configuration, by peeling the first cover portion 122 from the first base material 102, the adhesive portion 121 is exposed, and the sheet-like device 101 can be attached to the target object M. By peeling the second cover portion 104 from the second base material 103, the air battery 105a can be made to function. This allows the detection unit 107 and the communication unit 106 to start operating.

[0080] Moreover, by peeling the second substrate 103 away from the first substrate 102, the second substrate 103, the detection unit 107, and the communication unit 106 can be removed from the object M. Furthermore, by peeling the second substrate 103 away from the first substrate 102, the air battery 105a can be separated from the detection unit 107 and the communication unit 106. This allows the operation of the detection unit 107 and the communication unit 106 to be stopped.

[0081] Therefore, the configuration of this embodiment makes it possible to realize the sheet-like device 101 that can start and stop the operation of the communication unit 106 with a simple configuration.

[0082] (How to use the sheet device) An example of a method of using the sheet-like device 101 having the above-mentioned configuration will be described with reference to Figures 3, 5, and 6. In the following description, a state in which power is supplied to the communication unit 106 and the detection unit 107 of the sheet-like device 101 is referred to as a state in which the sheet-like device 101 is in use.

[0083] First, the first cover portion 122 covering one side in the thickness direction of the first base material 102 is peeled off from the first base material 102 to expose the adhesive portion 121 of the first base material 102. Next, the first base material 102 is attached to the object M via the adhesive portion 121. As a result, the detection unit 107 and the communication unit 106 are attached to the object M.

[0084] Next, as shown in FIG. 5, the second cover portion 104 is peeled off from the second base material 103. This exposes the air hole 154a of the air battery 105a, and air is supplied to the air battery 105a. This starts the supply of power to the communication unit 106 and the detection unit 107. That is, the sheet-like device 101 is in use. As described above, the protective sheet 108 remains on the other surface in the thickness direction of the second base material 103. Therefore, the protective sheet 108 prevents moisture from entering the inside of the air battery 105a.

[0085] When the use of the sheet-like device 101 is finished, the second substrate 103 is peeled off from the first substrate 102, as shown in Fig. 6. By peeling the second substrate 103 off from the first substrate 102, the communication unit 106 and the detection unit 107 are removed from the object M. In addition, the communication unit 106 and the detection unit 107 are separated from the air battery 105a. This stops the operation of the communication unit 106 and the detection unit 107.

[0086] (Modification of the second embodiment) In the above-described sheet-like device 101, the second base material 103 is configured of one layer. However, the second base material 203 of the sheet-like device 201 may have a plurality of layers as shown in FIG.

[0087] 7, for example, the second base material 203 of the sheet-like device 201 has a first layer 203a on which the detection unit 107 is provided and a second layer 203b on which the communication unit 106 is provided. In this way, the first layer 203a on which the detection unit 107 is provided and the second layer 203b on which the communication unit 106 is provided can be manufactured.

[0088] When the second substrate has a plurality of layers, the layer located on the other side in the thickness direction among the plurality of layers of the second substrate is exposed to the outside when the sheet-like device is used. When the second substrate has a plurality of layers as in this modification, the layer located on the other side in the thickness direction among the plurality of layers of the second substrate can be made to have a different shape, size, etc., or made of a different material from the other layers. Therefore, it is possible to improve the degree of freedom in design of the surface on the other side in the thickness direction of the second substrate that is exposed to the outside when the sheet-like device is used.

[0089] In this modified example, the second base material 203 has two layers, but the second base material may have three or more layers.

[0090] (Embodiment 3) Next, a sheet-like device 301 according to the third embodiment will be described with reference to Fig. 8 to Fig. 10. In the following, the same components as those in the second embodiment will be denoted by the same reference numerals, and the description thereof will be omitted. In the sheet-like device 301, as in the second embodiment, when the second substrate 103 is not peeled off from the first substrate 302, one surface of the second substrate 103 in the thickness direction is in contact with the other surface of the first substrate 302 in the thickness direction. However, in each drawing, the second substrate 103 is shown separated from the first substrate 302 for the sake of explanation. In each drawing, a dashed line connects members shown separated for the sake of explanation.

[0091] Fig. 8 is a diagram showing a schematic configuration of a sheet-like device 301. As shown in Fig. 8, the sheet-like device 301 has a first substrate 302, a second substrate 103, a power supply unit 105, a communication unit 106, a detection unit 107, a first cover unit 122, and a second cover unit 104. The first cover unit 122, the first substrate 302, the second substrate 103, and the second cover unit 104 are overlapped in the thickness direction.

[0092] In this embodiment, the first base material 302 of the sheet-like device 301 has a plurality of layers stacked in the thickness direction. In this embodiment, the first base material 302 has a first layer 302a located on one side in the thickness direction and a second layer 302b located on the other side in the thickness direction. Note that in each figure, the first layer 302a and the second layer 302b are shown separated from each other for the sake of explanation, but in reality, the first layer 302a and the second layer 302b are separated from each other in the portions where other members are located therebetween, and are not separated from each other in the other portions.

[0093] One surface in the thickness direction of first layer 302a is provided with adhesive section 121. The other surface in the thickness direction of first layer 302a is provided with power supply section 105. One surface in the thickness direction of second layer 302b is bonded to first layer 302a.

[0094] The second layer 302b has a hole 331 penetrating in the thickness direction. The hole 331 is covered by a protective sheet 308. When viewed in the thickness direction, the hole 331 is located at a position overlapping with the air hole 154a of the air battery 105a. Therefore, air can be supplied through the hole 331 to the air battery 105a located between the second layer 302b and the first layer 302a.

[0095] With this configuration, among the multiple layers of the first base material 302, the second layer 302b of the first base material 302 that is exposed when the second base material 103 is peeled off from the first base material 302, and the first layer 302a on which the power supply unit 105 is arranged can be manufactured separately. This allows, for example, the second layer 302b and the first layer 302a to have different shapes, sizes, etc., or to be made of different materials. This improves the degree of freedom in design on the other surface in the thickness direction of the first base material 302 that is exposed when the second base material 103 is peeled off.

[0096] In this embodiment, the first base material 302 has two layers. However, the first base material may have three or more layers.

[0097] (How to use the sheet device) An example of how to use the sheet-like device 301 having the above-mentioned configuration will be described with reference to FIGS.

[0098] First, the first cover portion 122 covering one side in the thickness direction of the first layer 302a of the first base material 302 is peeled off from the first base material 302, and the adhesive portion 121 of the first base material 302 is attached to the object M. As a result, the detection unit 107 and the communication unit 106 are attached to the object M.

[0099] 9, the second cover portion 104 is peeled off from the second base material 103. This brings the sheet-like device 301 into a usable state.

[0100] 10, when use of the sheet-like device 301 is finished, the second substrate 103 is peeled off from the first substrate 302. By peeling the second substrate 103 off from the first substrate 302, the communication unit 106 and the detection unit 107 are removed from the object M. In addition, the communication unit 106 and the detection unit 107 are separated from the air battery 105a. This stops the operation of the communication unit 106 and the detection unit 107.

[0101] In this embodiment, by peeling the second base material 103 from the first base material 302, the second layer 302b of the first base material 302 is exposed to the outside of the sheet-like device 301. That is, in this embodiment, the other surface in the thickness direction of the second layer 302b is exposed to the outside after use of the sheet-like device 301. Therefore, by providing a design to the second layer 302b, it is possible to improve the designability of the sheet-like device 301 after use.

[0102] (Other embodiments) Although the embodiment of the present invention has been described above, the above-mentioned embodiment is merely an example for carrying out the present invention. Therefore, the present invention is not limited to the above-mentioned embodiment, and it is possible to carry out the above-mentioned embodiment by appropriately modifying it within the scope of the gist of the present invention.

[0103] In the second and third embodiments, the sheet-like devices 101, 201, and 301 have the first cover portion 122 and the second cover portion 104. However, the sheet-like device may not have the first cover portion. The sheet-like device may not have the second cover portion.

[0104] In each of the above-described embodiments, the first substrate 2, 102, 302 has an adhesive portion 21, 121 for attachment to the object M. However, the first substrate does not have to have an adhesive portion. In this case, for example, the sheet-like device may have an attachment portion for detachably attaching the sheet-like device to the object M.

[0105] In the second and third embodiments, the second cover portion 104 covers other than the position overlapping with the hole portion 131 of the second base material 103, 203 when viewed in the thickness direction. However, it is sufficient that the second cover portion is disposed so as to overlap at least the air hole of the air battery when viewed in the thickness direction.

[0106] In the second embodiment, the hole 131 of the second base material 103, 203 is covered by the protective sheet 108. However, the hole of the second base material does not have to be covered by the protective sheet. In order to more reliably waterproof the air battery, it is preferable that the hole of the second base material is covered by the protective sheet.

[0107] In the third embodiment, the hole 331 of the second layer 302b of the first base material 302 is covered by the protective sheet 308. However, the hole in the second layer of the first base material does not have to be covered by the protective sheet. In order to more reliably waterproof the air battery, it is preferable that the hole in the second layer of the first base material is covered by the protective sheet. [Industrial Applicability]

[0108] The present invention can be used in a sheet-like device that is used by attaching an adhesive portion to the surface of an object. [Explanation of symbols]

[0109] 1, 101, 201, 301 Sheet-like device 2, 102, 302 1st base material 3, 103, 203 2nd base material 5, 105 Power supply section 6, 106 Communications Department 21, 121 Adhesive part 104 Second cover part (cover part) 105a Air battery 107 Detection unit 108, 308 Protective sheet 122 First cover part 131, 331 hole 151 Positive electrode 152 Negative electrode 153 Separator 154 Positive electrode exterior body 154a Air hole 155 Negative electrode exterior body 203a: First layer of second substrate 203b Second layer of second substrate 302a: First layer of first substrate 302b Second layer of first substrate M Object

Claims

1. A sheet-like device used in a state attached to an object, a sheet-like first substrate; a sheet-like second substrate provided releasably from the first substrate; a power supply unit located between the first base material and the second base material; a communication unit that operates using power supplied from the power supply unit and is capable of wireless communication with an external device; and the first substrate has an adhesive portion on a surface opposite to the second substrate, a surface of the first substrate facing the second substrate layer is coated with a release agent; The communication unit The second substrate is provided on a surface of the second substrate facing the first substrate. Sheet-like device.

2. The sheet-like device according to claim 1 , a detection unit that detects a state of the object; The detection unit the second substrate is provided on a surface of the second substrate facing the first substrate, and is operated by power supplied from the power supply unit; The communication unit transmitting the detection result by the detection unit to an external device; Sheet-like device.

3. The sheet-like device according to claim 1 or 2, The power supply unit The first substrate is provided on a surface of the first substrate facing the second substrate. Sheet-like device.

4. The sheet-like device according to claim 1 or 2, The power supply unit An air battery having air holes in at least a portion thereof, Sheet-like device.

5. The sheet-like device according to claim 4, The air battery is The positive electrode side faces the second substrate, The second substrate is the sheet-like device has a hole at a position overlapping the air hole of the air battery when viewed in the thickness direction; Sheet-like device.

6. The sheet-like device according to claim 5 , The hole portion of the second base material is Covered with a waterproof and breathable protective sheet. Sheet-like device.

7. The sheet-like device according to claim 4, The second substrate further includes a cover portion removably provided on a side opposite to the first substrate side, The cover portion is the sheet-like device is disposed on the second base material so as to overlap with the air holes of the air battery when viewed in the thickness direction of the sheet-like device; Sheet-like device.

8. The sheet-like device according to claim 4, The air hole of the air battery is Covered with a waterproof and breathable protective sheet. Sheet-like device.

9. The sheet-like device according to claim 1 or 2, The first substrate is It includes a plurality of layers stacked in the thickness direction, The power supply unit The insulating film is provided on a surface of the first base material side of a layer other than the layer closest to the second base material, among the plurality of layers of the first base material. Sheet-like device.

10. The sheet-like device according to claim 1 or 2, The second substrate is The laminate includes a plurality of layers stacked in the thickness direction. Sheet-like device.

Images