Stretchable device

Abstract

One embodiment of the present disclosure provides a stretchable device comprising: a stretchable substrate stack in which two or more stretchable substrates are stacked; and stretchable wiring provided on the stretchable substrate stack.

Description

stretchable devices

[0001] The present disclosure relates to stretchable devices.

[0002] Stretchable devices have been known for some time. Patent Document 1 discloses a configuration in which a plurality of resin parts with different degrees of stretchability are arranged in a planar direction to provide a predetermined stretchability. Patent Document 2 discloses a configuration in which wiring parts with different degrees of stretchability are used on a single substrate.

[0003] International Publication No. 2018 / 168734 Japanese Patent Application Laid-Open No. 2018-164015

[0004] The present inventors have discovered that the above-mentioned conventional stretchable devices can be improved in terms of providing the desired stretchability.

[0005] Specifically, a stretchable device has a stretchable substrate and stretchable wiring provided on the stretchable substrate, and the width of each component is relatively larger than the thickness. Therefore, in an embodiment in which stretchable substrates (corresponding to the resin portion of Patent Document 1) with different degrees of stretchability are arranged in the planar direction, the size of the stretchable device may become relatively large. Furthermore, the stretchable substrate may be a component in the stretchable device that is larger in size than the stretchable wiring. In other words, in a stretchable device, the stretchable substrate may be the main component. Therefore, even if two or more types of stretchable wiring (corresponding to the wiring portion of Patent Document 2) with different degrees of stretchability are provided, it is difficult to say that the desired stretchability is suitably provided for the stretchable device as a whole.

[0006] In view of the above, an object of the present disclosure is to provide a stretchable device having a new configuration that is not an extension of the configuration of conventional stretchable devices, that is, a stretchable device that can suitably provide desired stretchability while reducing the overall device size.

[0007] In order to achieve the above object, in one embodiment of the present disclosure, there is provided a stretchable device comprising a stretchable substrate laminate in which two or more stretchable substrates are laminated, and stretchable wiring provided on the stretchable substrate laminate.

[0008] According to a stretchable device according to an embodiment of the present disclosure, it is possible to reduce the overall device size while suitably providing desired stretchability.

[0009] FIG. 1 is a cross-sectional view schematically showing a stretchable device according to a first embodiment of the present disclosure. FIG. 2A is a cross-sectional view schematically showing a stretchable device according to a second embodiment of the present disclosure. FIG. 2B is a plan view schematically showing a stretchable device according to the second embodiment of the present disclosure. FIG. 3A is a cross-sectional view schematically showing a stretchable device according to a third embodiment of the present disclosure. FIG. 3B is a cross-sectional view schematically showing a stretchable device according to the third embodiment of the present disclosure. FIG. 4 is a cross-sectional view schematically showing a stretchable device according to a fourth embodiment of the present disclosure. FIG. 5 is a cross-sectional view schematically showing a stretchable device according to a fifth embodiment of the present disclosure. FIG. 6 is a cross-sectional view schematically showing a stretchable device according to a sixth embodiment of the present disclosure. FIG. 7 is a cross-sectional view schematically showing a stretchable device according to a seventh embodiment of the present disclosure. FIG. 8 is a cross-sectional view schematically showing a stretchable device according to an eighth embodiment of the present disclosure. FIG. 9 is a cross-sectional view schematically showing a stretchable device according to a ninth embodiment of the present disclosure. FIG. 10 is a cross-sectional view schematically showing a stretchable device according to a tenth embodiment of the present disclosure.

[0010] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In each embodiment, differences from those previously described will be mainly described. In particular, similar effects resulting from similar configurations will not be mentioned in each embodiment. Among the components in the following embodiments, components not recited in independent claims will be described as optional components. Furthermore, the size and size ratios of components shown in the drawings are not necessarily strict. Furthermore, in each figure, substantially identical components are assigned the same reference numerals, and duplicated descriptions may be omitted or simplified.

[0011] In this specification, "above" includes a state where the wire is located above a certain element, i.e., above a certain element via another object, a state where the wire is located above a certain element with a gap therebetween, and a state where the wire is located directly above a certain element. Therefore, in this specification, "a stretchable wiring provided on a stretchable substrate" can include a stretchable wiring in a state where the wire is in contact with the main surface of the stretchable substrate, and a stretchable wiring in a state where the wire is not in direct contact with the main surface of the stretchable substrate but is separated from the main surface via another member (for example, a resin layer).

[0012] First Embodiment Hereinafter, the configuration of a stretchable device 100 according to a first embodiment will be described with reference to FIG.

[0013] FIG. 1 is a plan view schematically illustrating a stretchable device according to a first embodiment of the present disclosure.

[0014] The stretchable device 100 according to the first embodiment of the present disclosure comprises a stretchable substrate laminate 10 in which two or more stretchable substrates 11, 12 are laminated, and a stretchable wiring 20 provided on the stretchable substrate laminate 10.

[0015] In other words, in the present disclosure, the stretchable wiring 20 is supported by the stretchable substrate laminate 10. That is, a configuration is adopted in which the stretchable substrate laminate 10, in which two or more stretchable substrates 11, 12 are laminated, supports the stretchable wiring 20. In addition, the stretchable wiring 20 is disposed on one main surface 10A of the stretchable substrate laminate 10.

[0016] Such a stretchable device 100 can be produced by first stacking a plurality of predetermined stretchable substrates to form a stretchable substrate laminate 10, and then printing the stretchable wiring 20 on this stretchable substrate laminate 10.

[0017] The stretchable substrates 11 and 12 are sheet- or film-shaped stretchable substrates made of, for example, a stretchable resin material. Examples of the resin material for the stretchable substrate include elastomer resin materials such as olefin-based resins, urethane-based resins, styrene-based resins, and silicone-based resins.

[0018] The stretchable wiring 20 includes conductive particles and a resin. Examples of the stretchable wiring 20 include a mixture of metal powder such as Ag, Cu, or Ni as conductive particles and an elastomer resin such as a silicone resin. The average particle size of the conductive particles is not particularly limited, but is preferably 0.01 μm or more and 10 μm or less. The conductive particles are preferably spherical in shape.

[0019] According to the above configuration, assuming that the width of each component is greater than the thickness, an increase in the width size of the stretchable device 100 is avoided compared to when stretchable substrates with different degrees of stretchability are arranged in the planar direction, and the overall device size can be made relatively small.

[0020] The stretchable substrate can be a main component of the stretchable device 100. Therefore, compared to a case where two or more types of stretchable wirings with different degrees of stretchability are provided on a single substrate, the stretchable substrate can more easily provide the desired stretchability for the entire stretchable device.

[0021] Furthermore, the stretchable substrate may have different stretchability depending on the thickness and size thereof. Specifically, if the thickness of a single stretchable substrate is large, the stretchability of the stretchable substrate may be relatively small (hard to stretch). On the other hand, if the thickness of a single stretchable substrate is small, the stretchability of the stretchable substrate may be relatively large (easy to stretch). Therefore, in a structure in which the stretchable wiring 20 is arranged on a single stretchable substrate, if the required stretchability differs at specific locations within the entire stretchable device, it may be necessary to vary the thickness of the single-layer stretchable substrate depending on the location in order to provide the desired stretchability.

[0022] In this regard, as described above, the present disclosure employs a configuration in which the stretchable substrate laminate 10, in which two or more stretchable substrates 11, 12 are laminated, supports the stretchable wiring 20. Because such a configuration is employed, the desired stretchability can be provided to the stretchable substrate laminate 10 by varying the number of multiple stretchable substrates that are components of the stretchable substrate laminate 10, without varying the thickness of the single-layer stretchable substrate depending on the location. As a result, it is possible to provide the desired stretchability to the stretchable device 100 as a whole.

[0023] That is, in the present disclosure, by adjusting and determining in advance the number of multiple stretchable substrates arranged in the stacking direction, it is possible to provide the desired stretchability as a whole in the resulting stretchable device 100.

[0024] Preferably, the thickness and material of each stretchable substrate constituting the stretchable substrate laminate 10 may be the same. In this case, it is possible to improve the efficiency of producing the stretchable substrate laminate 10 having the desired stretchability.

[0025] Preferably, from the viewpoint of easily controlling the stretchability of each stretchable substrate, the thickness of each stretchable substrate can be 50 μm or less. This makes it easier to provide the desired stretchability to the stretchable substrate laminate 10 composed of multiple stretchable substrates. As a result, it is easier to provide the desired stretchability to the stretchable device 100 as a whole. Note that the thickness of each stretchable substrate is preferably 20 μm or more from the viewpoint of ensuring a predetermined strength.

[0026] Furthermore, air bubbles and the like may be contained inside the stretchable substrate. In this regard, since the stretchable substrate laminate 10 that supports the stretchable wiring 20 is formed by laminating two or more stretchable substrates 11, 12, the probability that air bubbles and the like will be contained in all of the stretchable substrates is relatively low. Even if air bubbles and the like are contained in all of the stretchable substrates, the probability that air bubbles and the like that may be contained in each stretchable substrate will be located in a row in the substrate thickness direction is also relatively low. From the above, it is possible to suppress a decrease in the insulation properties of the stretchable substrate laminate 10 itself.

[0027] The second and subsequent embodiments will be described below, focusing mainly on the differences from the first embodiment.

[0028] [Second embodiment] A second embodiment will be described below. Fig. 2A is a cross-sectional view schematically showing a stretchable device according to a second embodiment of the present disclosure. Fig. 2B is a plan view schematically showing a stretchable device according to the second embodiment of the present disclosure.

[0029] The second embodiment differs from the first embodiment in that the stretchable substrate laminate 10 has slits.

[0030] Specifically, the stretchable substrate laminate 10 has a slit 30 that extends from the main surface 10A (corresponding to the first main surface) of one stretchable substrate 12, on which the stretchable wiring 20 is arranged, to the interface 13 with the other adjacent stretchable substrate 11. That is, this slit 30 extends from the first main surface 10A of one stretchable substrate 12, on which the stretchable wiring 20 is arranged, to the second main surface 10B opposite thereto. Furthermore, this slit 30 and the stretchable wiring 20 are arranged so as to be spaced apart.

[0031] According to this configuration, when multiple stretchable substrates are stacked during the production of the stretchable device 100, air bubbles can be easily released through the incisions 30. This makes it possible to prevent air bubbles from remaining between multiple stretchable substrates. Furthermore, by arranging the incisions 30 and the stretchable wiring 20 at a distance from each other, contact between the incisions 30 and the stretchable wiring 20 is avoided. This makes it possible to maintain the electrical connection reliability of the stretchable wiring 20. Furthermore, when an incision is made in a stretchable substrate with a single layer structure, there is a risk that the entire stretchable substrate will break, starting from the incision, due to stretching during use of the stretchable device. By stacking multiple stretchable substrates, it is possible to prevent the entire stretchable device from breaking, even when an incision is made.

[0032] [Third embodiment] A third embodiment will now be described. Fig. 3A is a cross-sectional view schematically showing a stretchable device according to a third embodiment of the present disclosure. Fig. 3B is a plan view schematically showing a stretchable device according to the third embodiment of the present disclosure.

[0033] The third embodiment differs from the first embodiment in that the stretchable substrate laminate 10 has openings.

[0034] Specifically, the stretchable substrate laminate 10 has an opening 40 that extends from the main surface 10A (corresponding to the first main surface) of one stretchable substrate 12, on which the stretchable wiring 20 is arranged, to the interface 13 with the other adjacent stretchable substrate 11. That is, this opening 40 extends from the first main surface 10A of one stretchable substrate 12, on which the stretchable wiring 20 is arranged, to the second main surface 10B opposite thereto. Furthermore, this opening 40 and the stretchable wiring 20 are spaced apart.

[0035] According to this configuration, air bubbles can be easily released through the openings 40 when stacking multiple stretchable substrates during the production of the stretchable device 100. This makes it possible to prevent air bubbles from remaining between the multiple stretchable substrates.

[0036] The presence of the openings 40 can increase the stretchability of the stretchable substrate 12 compared to a case where there are no openings 40. As a result, by appropriately determining the locations where the openings 40 are formed, it is possible to provide the stretchable device 100 as a whole with more complex stretching properties.

[0037] Furthermore, by arranging the opening 40 and the stretchable wiring 20 at a distance from each other, contact between the opening 40 and the stretchable wiring 20 is avoided. This makes it possible to maintain the reliability of the electrical connection of the stretchable wiring 20.

[0038] Fourth Embodiment A fourth embodiment will now be described. Fig. 4 is a cross-sectional view schematically showing a stretchable device according to a fourth embodiment of the present disclosure.

[0039] The fourth embodiment differs from the first embodiment in that the stretchable substrate laminate 10 has dummy wiring.

[0040] Specifically, the stretchable substrate laminate 10 has dummy wiring 50 that extends along the interface 13 between one stretchable substrate 12 on which the stretchable wiring 20 is arranged and the other adjacent stretchable substrate 11. In this specification, the term "dummy wiring" refers to wiring that is not electrically connected compared to the above-mentioned stretchable wiring 20.

[0041] According to this configuration, when stacking multiple stretchable substrates during the fabrication of the stretchable device 100, it is possible to easily remove air bubbles from the dummy wiring 50. In particular, when a configuration is adopted in which a portion of the dummy wiring 50 is exposed on the outer surface of the stretchable device 100 as shown in FIG. 4 , it is possible to suitably remove air bubbles from the dummy wiring 50. This makes it possible to prevent air bubbles from remaining between multiple stretchable substrates. The dummy wiring 50 of this embodiment is not limited to a conductive material, and for example, an insulating layer or the like may be disposed.

[0042] Fifth Embodiment Hereinafter, a fifth embodiment will be described. Fig. 5 is a cross-sectional view schematically showing a stretchable device according to a fifth embodiment of the present disclosure.

[0043] The fifth embodiment differs from the first embodiment in that the stretchable substrate laminate 10 has the above-mentioned dummy wiring and the above-mentioned slits and / or openings.

[0044] The fifth embodiment is an embodiment that combines the second embodiment with the third embodiment and / or the fourth embodiment. As an example, as shown in FIG. 5 , the notches 30 mentioned in the second embodiment and the dummy wiring 50 mentioned in the fourth embodiment can be in contact with each other. According to this configuration, when stacking multiple stretchable substrates during the fabrication of the stretchable device 100, it is possible to make it easier for air bubbles to escape from both the notches 30 and the dummy wiring 50. This makes it possible to preferably prevent air bubbles from remaining between multiple stretchable substrates.

[0045] Note that Figure 5 illustrates a state in which the notch 30 and the dummy wiring 50 mentioned above are in contact with each other, but this is not limited to this, and it is also possible to adopt a state in which the notch 30 mentioned in the second embodiment is in contact with the opening 40 mentioned in the third embodiment.

[0046] Even with this configuration, when stacking a plurality of stretchable substrates during the production of the stretchable device 100, it is possible to make it easier for air bubbles to escape from both the openings 40 and the dummy wirings 50. This makes it possible to suitably prevent air bubbles from remaining between the plurality of stretchable substrates.

[0047] Sixth Embodiment Hereinafter, a sixth embodiment will be described. Fig. 6 is a cross-sectional view schematically showing a stretchable device according to a sixth embodiment of the present disclosure.

[0048] The sixth embodiment differs from the first embodiment in that a stretchable cover layer is further provided. Specifically, a stretchable cover layer 60 is provided on the stretchable substrate laminate 10 in the thickness direction of the stretchable substrate, and is configured to cover the stretchable wiring 20.

[0049] According to this configuration, the stretchable wiring 20 can be protected as a whole by the cover layer 60 and the stretchable substrate 12. This makes it possible to suitably ensure the reliability of the electrical connection through the stretchable wiring 20 in the stretchable device 100.

[0050] Furthermore, it is preferable that at least one of the material and shape of the stretchable substrates 11, 12 and the cover layer 60 is the same. If the materials are the same, it is easier to connect the stretchable substrate 12 and the cover layer 60 compared to connecting different types of components. Furthermore, if the shapes (corresponding to the comprehensive concept of shape and size) are the same, it becomes easier to align the components, and the overall efficiency of manufacturing the stretchable device can be improved.

[0051] Seventh Embodiment Hereinafter, a seventh embodiment will be described. Fig. 7 is a cross-sectional view schematically showing a stretchable device according to a seventh embodiment of the present disclosure.

[0052] The seventh embodiment differs from the sixth embodiment in that two or more stretchable cover layers are provided.

[0053] Specifically, two or more cover layers 60, 70 are stacked in the thickness direction of the stretchable substrate. Not only the stacked multiple stretchable substrates, but also the cover layers may contain bubbles or the like. In this regard, when two or more cover layers 60, 70 are stacked, the probability that bubbles or the like will be contained in all of the cover layers is relatively low. Even if bubbles or the like are contained in all of the cover layers, the probability that bubbles or the like contained in each cover layer will be arranged in a row in the thickness direction is also relatively low. As a result, it is possible to suppress a decrease in the insulation properties of the cover layer laminate itself, which is composed of multiple cover layers.

[0054] Eighth Embodiment An eighth embodiment will now be described. Fig. 8 is a cross-sectional view schematically showing a stretchable device according to an eighth embodiment of the present disclosure.

[0055] The eighth embodiment differs from the sixth and seventh embodiments in that the cover layer has an opening through which the stretchable wiring can be partially exposed.

[0056] Specifically, the cover layer 60 has an opening 61 through which the stretchable wiring 20 can be partially exposed, and the thickness of the stretchable substrate laminate 10 is greater than the total thickness of one or more cover layers 60. According to this configuration, exposure of the stretchable wiring 20 makes it possible to extract electrical signals from the stretchable wiring 20 to the outside.

[0057] Furthermore, the opening 61 of the cover layer 60 described above has a property of being relatively easy to stretch due to its opening shape, and is therefore less likely to stretch because the thickness of the stretchable substrate laminate 10 that supports the stretchable wiring 20 and the cover layer 60 is greater than the total thickness of the cover layer 60. This makes it possible to achieve a balance in the elongation rate between the stretchable substrate laminate 10, which is relatively difficult to stretch, and the cover layer 60 with the opening 61, which is relatively easy to stretch. As a result, it is possible to reduce the risk of the stretchable wiring 20 being excessively stretched and breaking.

[0058] Ninth Embodiment A ninth embodiment will now be described. Fig. 9 is a cross-sectional view schematically illustrating a stretchable device according to a ninth embodiment of the present disclosure.

[0059] The ninth embodiment differs from the eighth embodiment in that an electrode 80 is provided on the elastic wiring 20 with the elastic wiring 20 partially exposed at the opening 61 of the cover layer 60, and this electrode 80 is an electrode made of a different material from the elastic wiring 20.

[0060] For example, a silver-silver chloride electrode can be used as the electrode 80. The silver chloride electrode can be an electrode that can suppress fluctuations in electrode potential. This makes it possible to suppress fluctuations in electrode potential when acquiring a biosignal through the elastic wiring 20, and as a result, it becomes possible to acquire a biosignal with less noise.

[0061] Tenth Embodiment Hereinafter, a tenth embodiment will be described. Fig. 10 is a cross-sectional view schematically showing a stretchable device according to a tenth embodiment of the present disclosure.

[0062] The tenth embodiment differs from the first and sixth embodiments in that the stretchable substrate and / or the cover layer are made of a thermoplastic material.

[0063] With this configuration, the cover layer 60 is made of a thermoplastic material, which allows for thermal bonding between the components by heat pressing. The thermoplastic material can be selected from materials such as polyurethane and styrene. Therefore, there is no need to use an adhesive layer to connect the components. This improves the overall manufacturing efficiency of the stretchable device. It also reduces manufacturing costs.

[0064] Furthermore, compared to connecting the components using an adhesive layer, direct connection between the components makes it possible to suitably prevent deterioration in the insulation of the components. Specifically, it is possible to suitably prevent deterioration in the insulation of the stretchable substrate and the cover layer 60 in each state of the connection between the stretchable substrates 11 and 12, the connection between the stretchable substrate 12 and the cover layer 60, and the connection between the cover layers 60.

[0065] Each embodiment and modification is an example, and the present disclosure is not limited to each embodiment and modification. Also, each drawing is an example of components and does not limit the shape. Furthermore, partial substitution or combination of the configurations shown in different embodiments and modifications is possible.

[0066] The aspects of the stretchable device of the present disclosure are as follows. <1> A stretchable device comprising a stretchable substrate laminate in which two or more stretchable substrates are laminated, and a stretchable wiring provided on the stretchable substrate laminate. <2> The stretchable device according to <1>, in which the stretchable wiring is supported by the stretchable substrate laminate. <3> The stretchable device according to <1> or <2>, in which the stretchable wiring is disposed on one main surface of the stretchable substrate laminate. <4> The stretchable device according to any one of <1> to <3>, in which the stretchable substrates constituting the stretchable substrate laminate are made of the same material. <5> The stretchable device according to any one of <1> to <4>, in which the stretchable substrates constituting the stretchable substrate laminate have the same thickness. <6> The stretchable device according to any one of <1> to <5>, wherein the stretchable substrate laminate has a slit extending from a main surface of one of the stretchable substrates on which the stretchable wiring is arranged to an interface with the other adjacent stretchable substrate, and the slit and the stretchable wiring are spaced apart. <7> The stretchable substrate laminate according to any one of <1> to <6>, wherein the stretchable substrate laminate has an opening extending from a main surface of one of the stretchable substrates on which the stretchable wiring is arranged to an interface with the other adjacent stretchable substrate, and the opening and the stretchable wiring are spaced apart. <8> The stretchable device according to any one of <1> to <7>, wherein the stretchable substrate laminate has a dummy wiring extending along the interface between one of the stretchable substrates on which the stretchable wiring is arranged and the other adjacent stretchable substrate. <9> The stretchable device according to <8>, wherein the dummy wiring is in contact with at least one of the slit and the opening. <10> The stretchable device according to any one of <1> to <9>, further comprising a stretchable cover layer that is provided on the stretchable substrate laminate in a thickness direction of the stretchable substrate and covers the stretchable wiring. <11> The stretchable device according to <10>, in which two or more of the cover layers are laminated in the thickness direction. <12> The stretchable device according to <10> or <11>, in which at least one of the material and shape of the stretchable substrate and the cover layer are the same.<13> The stretchable device according to any one of <10> to <12>, wherein the cover layer has an opening through which the stretchable wiring can be partially exposed, and wherein a thickness of the stretchable substrate laminate is greater than a total thickness of one or more of the cover layers. <14> The stretchable device according to any one of <1> to <13>, further comprising an electrode provided on the stretchable wiring and made of a material different from that of the stretchable wiring. <15> The stretchable device according to any one of <1> to <14>, wherein the stretchable substrate is made of a thermoplastic material. <16> The stretchable device according to any one of <10> to <15>, wherein the cover layer is made of a thermoplastic material. <17> The stretchable device according to any one of <1> to <16>, wherein the thickness of the stretchable substrate is 50 μm or less.

[0067] REFERENCE SIGNS LIST 100 Stretchable device 80 Electrode 60, 70 Cover layer 50 Dummy wiring 40 Opening 30 Slit 20 Stretchable wiring 10 Stretchable substrate laminate 10A First main surface of stretchable substrate 10B Second main surface of stretchable substrate 11 Stretchable substrate 12 Stretchable substrate 13 Interface between stretchable substrates

Claims

1. A stretchable device comprising a stretchable substrate laminate in which two or more stretchable substrates are laminated, and a stretchable wiring provided on the stretchable substrate laminate.

2. The stretchable device according to claim 1, wherein the stretchable wiring is supported by the stretchable substrate laminate.

3. The stretchable device according to claim 1 or 2, wherein the stretchable wiring is disposed on one main surface of the stretchable substrate laminate.

4. The stretchable device according to any one of claims 1 to 3, wherein the materials of the stretchable substrates constituting the stretchable substrate laminate are the same.

5. The stretchable device according to any one of claims 1 to 4, wherein the thicknesses of the respective stretchable substrates constituting the stretchable substrate laminate are the same.

6. A stretchable device according to any one of claims 1 to 5, wherein the stretchable substrate laminate has a slit extending from a main surface of one of the stretchable substrates on which the stretchable wiring is arranged to an interface with the other adjacent stretchable substrate, and the slit and the stretchable wiring are spaced apart.

7. The stretchable device according to any one of claims 1 to 6, wherein the stretchable substrate laminate has an opening extending from a main surface of one of the stretchable substrates on which the stretchable wiring is arranged to an interface with the other adjacent stretchable substrate, and the opening and the stretchable wiring are spaced apart.

8. The stretchable device according to any one of claims 1 to 7, wherein the stretchable substrate laminate has dummy wiring extending along the interface between one of the stretchable substrates on which the stretchable wiring is arranged and the other adjacent stretchable substrate.

9. The stretchable device according to claim 8, wherein the dummy wiring contacts at least one of the notch and the opening.

10. The stretchable device according to any one of claims 1 to 9, further comprising a stretchable cover layer provided on the stretchable substrate laminate in the thickness direction of the stretchable substrate and covering the stretchable wiring.

11. The stretchable device of claim 10, wherein two or more of the cover layers are stacked in the thickness direction.

12. The stretchable device according to claim 10 or 11, wherein at least one of the material and shape of the stretchable substrate and the cover layer are the same.

13. The stretchable device according to any one of claims 10 to 12, wherein the cover layer has an opening through which the stretchable wiring can be partially exposed, and the thickness of the stretchable substrate laminate is greater than the total thickness of one or more of the cover layers.

14. The stretchable device according to any one of claims 1 to 13, further comprising an electrode provided on the stretchable wiring and made of a material different from that of the stretchable wiring.

15. The stretchable device of any one of claims 1 to 14, wherein the stretchable substrate is composed of a thermoplastic material.

16. The stretchable device of any one of claims 10 to 15, wherein the cover layer is composed of a thermoplastic material.

17. The stretchable device according to any one of claims 1 to 16, wherein the thickness of the stretchable substrate is 50 μm or less.

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