Electrical connection component and electronic device

Abstract

To provide an electrical connection component and an electronic device capable of improving connection characteristics.SOLUTION: According to an embodiment, an electrical connection component comprises: a first conductive member including a first portion, a second portion, and a plurality of first conductive fibers; a second conductive member including a third portion, a fourth portion, and a plurality of second conductive fibers; and an intermediate member including an intermediate region and a hole. The intermediate region is provided between the first portion and the third portion. The second portion and the fourth portion are electrically connected to each other in the hole. In a second direction perpendicular to a first direction from the first portion to the third portion, at least a portion of one of the plurality of first conductive fibers included in the second portion is located between at least a portion of one of the plurality of second conductive fibers included in the fourth portion and at least a portion of another one of the plurality of second conductive fibers included in the fourth portion.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] Embodiments of the present invention relate to electrical connection components and electronic devices.

Background Art

[0002] For example, electrical connection components are used in various electronic devices. Stable connection characteristics are desired in electrical connection components.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Embodiments provide an electrical connection component and an electronic device capable of improving connection characteristics.

Means for Solving the Problems

[0005] According to an embodiment, an electrical connection component includes a first part and a second part, a first conductive member including a plurality of first conductive fibers, a third part and a fourth part, a second conductive member including a plurality of second conductive fibers, and an intermediate member including an intermediate region and a hole. The intermediate region is provided between the first part and the third part. The second part and the fourth part are electrically connected to each other in the hole. In a second direction perpendicular to a first direction from the first part to the third part, at least a part of one of the plurality of first conductive fibers included in the second part is between at least a part of one of the plurality of second conductive fibers included in the fourth part and at least a part of another one of the plurality of second conductive fibers included in the fourth part.

Brief Description of the Drawings

[0006]

Figure 1

Figure 2

Figure 3

Figure 4

MODE FOR CARRYING OUT THE INVENTION

[0007] Hereinafter, each embodiment of the present invention will be described with reference to the drawings. The drawings are schematic or conceptual, and the relationship between the thickness and width of each part, the ratio of the sizes between parts, etc. are not necessarily the same as those in reality. Even when representing the same part, the dimensions and ratios may be represented differently in the drawings. In the present specification and each figure, the same reference numerals are given to the same elements as those described above with respect to the previously shown figures, and the detailed description will be omitted as appropriate.

[0008] (First Embodiment) FIG. 1 is a schematic cross-sectional view illustrating an electrical connection component according to the first embodiment. FIG. 2 is a schematic view illustrating a part of the electrical connection component according to the first embodiment. As shown in FIG. 1, the electrical connection component 110 according to the embodiment includes a first conductive member 10, a second conductive member 20, and an intermediate member 30.

[0009] The first conductive member 10 includes a first portion 11 and a second portion 12. The first conductive member 10 includes a plurality of first conductive fibers 10F (see FIG. 2).

[0010] The second conductive member 20 includes a third portion 23 and a fourth portion 24. The second conductive member 20 includes a plurality of second conductive fibers 20F (see FIG. 2).

[0011] As shown in FIG. 1, the intermediate member 30 includes an intermediate region 31 and a hole 32. The intermediate region 31 is provided between the first portion 11 and the third portion 23. The second portion 12 and the fourth portion 24 are electrically connected to each other within the hole 32. Within the hole 32, the second portion 12 contacts the fourth portion 24.

[0012] Let the first direction D1 from the first portion 11 to the third portion 23 be in the Z-axis direction. The Z-axis direction corresponds to, for example, the stacking direction. Let one direction perpendicular to the Z-axis direction be the X-axis direction. Let the direction perpendicular to both the Z-axis direction and the X-axis direction be the Y-axis direction.

[0013] The first portion 11 and the third portion 23 are, for example, layered along the X-Y plane. The intermediate region 31 is, for example, layered along the X-Y plane.

[0014] FIG. 2 exemplifies an enlarged view of the second portion 12 and the fourth portion 24. FIG. 2 is a schematic diagram drawn based on the SEM image of the cross-section of the second portion 12 and the fourth portion 24 within the hole 32. As shown in FIG. 2, the second portion 12 includes a plurality of first conductive fibers 10F. The fourth portion 24 includes a plurality of second conductive fibers 20F.

[0015] As shown in FIG. 2, let the direction perpendicular to the first direction D1 be the second direction D2. The second direction D2 may be, for example, the X-axis direction. In the second direction D2, at least a part of one of the plurality of first conductive fibers 10F included in the second portion 12 is between at least a part of one of the plurality of second conductive fibers 20F included in the fourth portion 24 and at least a part of another one of the plurality of second conductive fibers 20F included in the fourth portion 24.

[0016] As shown in FIG. 2, for example, in the second direction D2, at least a part of one of the plurality of second conductive fibers 20F included in the fourth portion 24 is between at least a part of one of the plurality of first conductive fibers 10F included in the second portion 12 and at least a part of another one of the plurality of first conductive fibers 10F included in the second portion 12.

[0017] With such a configuration, the second part 12 and the fourth part 24 are stably electrically connected to each other. For example, for example, a plurality of first conductive fibers 10F included in the second part 12 and a plurality of second conductive fibers 20F included in the fourth part 24 are intertwined with each other. The contact area between the second part 12 and the fourth part 24 is large. For example, an electrical connection can be obtained with low electrical resistance. For example, high mechanical strength can be obtained. According to the embodiment, an electrical connection component capable of improving connection characteristics can be provided.

[0018] In an embodiment, the first conductive member 10, the second conductive member 20, and the intermediate member 30 have flexibility. For example, in the flexible electrical connection component 110, a stable electrical connection can be obtained.

[0019] As will be described later, the electrical connection component 110 can be applied to various electronic devices. The electrical connection component 110 can be applied to, for example, a sensor that is attached to a human body or the like and used. With the flexible electrical connection component 110, a sensor for such applications can operate stably.

[0020] For example, as a first reference example, a conductive layer that does not include a plurality of conductive fibers can be considered as the two conductive members. In the first reference example, the conductive layer is, for example, a metal layer. In the first reference example, when trying to obtain low electrical resistance, the metal layer becomes thick, making it difficult to obtain sufficient flexibility and difficult to stably obtain low electrical resistance. In the first reference example, when connecting two conductive layers in the hole 32 with a conductive member (such as a conductive adhesive or solder), the process is complicated and the flexibility deteriorates at the connection location.

[0021] In contrast, in the embodiment, two conductive members including a plurality of conductive fibers are used. Thereby, high flexibility and low electrical resistance (sheet resistivity) can be obtained. In the embodiment, the plurality of conductive fibers included in the two conductive members are intertwined. Thereby, a stable electrical connection can be obtained without using another connecting member such as solder. In the embodiment, high flexibility can be maintained even at the connection location in the hole 32.

[0022] In the embodiment, the configuration in which the plurality of first conductive fibers 10F included in the second portion 12 and the plurality of second conductive fibers 20F included in the fourth portion 24 are intertwined can be obtained, for example, by crimping these portions with an appropriate pressure. For example, in experiments using various pressures, the cross-section is observed. The presence or absence of the above configuration is observed. Thereby, the above configuration can be obtained. At this time, experiments may be conducted to change the way of increasing or decreasing the pressure and the pressure application time, etc.

[0023] In the embodiment, the intermediate member 30 has insulation. For example, the intermediate member 30 (for example, the intermediate region 31) includes a non-woven fabric or a woven fabric. Thereby, high flexibility can be obtained. For example, high moisture permeability can be obtained. Good characteristics can be obtained in applications applied to the skin of humans or the like.

[0024] As shown in FIG. 1, the third thickness t3 along the first direction D1 of the intermediate region 31 may be, for example, 10 μm or more and 500 μm or less. High flexibility is easily obtained. The width L32 in the second direction D2 of the hole 32 is, for example, 100 μm or more and 10 mm or less. For example, an electrical connection with low electrical resistance is easily obtained.

[0025] The first thickness t1 along the first direction D1 of the first portion 11 may be, for example, 1 μm or more and 20 μm or less. The second thickness t2 along the first direction D1 of the second portion 12 may be, for example, 1 μm or more and 20 μm or less. High flexibility and low electrical resistance are easily obtained.

[0026] FIG. 3(a) and FIG. 3(b) are schematic perspective views illustrating a part of the electrical connection component according to the first embodiment. As shown in FIG. 3(a), one of the plurality of first conductive fibers 10F includes a first core member 10C and a first conductive layer 10L. The first core member 10C includes a first side surface 10S. The first side surface 10S extends along a first extending direction Dex1 in which the first core member 10C extends. The first conductive layer 10L is provided on the first side surface 10S.

[0027] As shown in FIG. 3(b), one of the plurality of second conductive fibers 20F includes a second core member 20C and a second conductive layer 20L. The second core member 20C includes a second side surface 20S. The second side surface 20S extends along a second extending direction Dex2 in which the second core member 20C extends. The second conductive layer 20L is provided on the second side surface 20S.

[0028] For example, the first core member 10C includes a first resin. The first resin includes, for example, at least one selected from the group consisting of polyurethane, polyurethane derivatives, polyvinyl alcohol, polyvinyl alcohol derivatives, polyvinylidene fluoride, polyvinylidene fluoride derivatives, and elastomeric materials. The first core member 10C may include polydimethylsiloxane. For example, a layer containing polydimethylsiloxane may be provided around the structure containing the above first resin. The first conductive layer 10L includes, for example, at least one selected from the group consisting of gold, silver, copper, aluminum, and carbon.

[0029] For example, the second core member 20C includes a second resin. The second resin includes, for example, at least one selected from the group consisting of polyurethane, polyurethane derivatives, polyvinyl alcohol, polyvinyl alcohol derivatives, polyvinylidene fluoride, polyvinylidene fluoride derivatives, and elastomeric materials. The second core member 20C may include polydimethylsiloxane. For example, a layer containing polydimethylsiloxane may be provided around the structure containing the above second resin. The second conductive layer 20L includes, for example, at least one selected from the group consisting of gold, silver, copper, aluminum, and carbon.

[0030] As shown in FIG. 3(a), one of the plurality of first conductive fibers 10F has a width T1 (for example, a diameter). The width T1 corresponds to, for example, the length of one of the plurality of first conductive fibers 10F in a direction Dx1 perpendicular to the first extending direction Dex1. The width T1 is, for example, 10 nm or more and 1000 nm or less. The length of one of the plurality of first conductive fibers 10F (the length along the first extending direction Dex1) may be, for example, 1 mm or more and 500 mm or less.

[0031] As shown in FIG. 3(b), one of the plurality of second conductive fibers 20F has a width T2 (for example, a diameter). The width T2 corresponds to, for example, the length of one of the plurality of second conductive fibers 20F in a direction Dx2 perpendicular to the second extending direction Dex2. The width T2 is, for example, 10 nm or more and 500 nm or less. The length of one of the plurality of second conductive fibers 20F (the length along the second extending direction Dex2) may be, for example, 1 mm or more and 500 mm or less.

[0032] The thickness t10L of the first conductive layer 10L (see FIG. 3(a)) may be, for example, 5 nm or more and 500 nm or less. The thickness t20L of the second conductive layer 20L (see FIG. 3(b)) may be, for example, 5 nm or more and 500 nm or less.

[0033] (Second Embodiment) FIG. 4 is a schematic cross-sectional view illustrating an electronic device according to the second embodiment. As shown in FIG. 4, the electronic device 210 according to the embodiment includes the electrical connection component 110 according to the first embodiment and the circuit portion 70. The circuit portion 70 is electrically connected to the second conductive member 20. In this example, the circuit portion 70 is electrically connected to the second conductive member 20 by the first connection member 45a and the second connection member 45b. The first connection member 45a is, for example, an anisotropic conductive film.

[0034] In this example, the electronic device 210 further includes an adhesive layer 41. The adhesive layer 41 is fixed to the first conductive member 10. The adhesive layer 41 is, for example, a PVA (polyvinyl alcohol) layer. The adhesive layer 41 is removably fixed to an object 80 (such as the skin of a human, etc.), for example. The electronic device 210 is, for example, a sensor capable of detecting the state of the object 80.

[0035] For example, a signal corresponding to the state of the object 80 is supplied to the circuit portion 70 via the first conductive member 10 and the second conductive member 20. According to the embodiment, stable detection is possible. For example, the discomfort of the user is low. Long-term continuous detection becomes easier.

[0036] As shown in FIG. 4, the electronic device 210 may include a first resin layer 42a. The first resin layer 42a covers the electrical connection component 110. The first resin layer 42a may include, for example, an acrylic resin (gel). The electronic device 210 may include a second resin layer 42b. The first resin layer 42a is provided between the electrical connection component 110 and the second resin layer 42b. The second resin layer 42b may include, for example, a polyurethane film.

[0037] The electronic device 210 may include, for example, a pressure sensor. The electronic device 210 may include, for example, an acoustic sensor. The electronic device 210 may include, for example, a strain sensor. The electronic device 210 according to the embodiment may include any device other than the sensor. The electronic device 210 may include, for example, at least any one of a power source, a data recording device, and a communication module.

[0038] The embodiment may include the following configuration. (Configuration 1) A first conductive member including a first part and a second part and including a plurality of first conductive fibers, A second conductive member including a third part and a fourth part and including a plurality of second conductive fibers, An intermediate member including an intermediate region and a hole, Comprising, The intermediate region is provided between the first part and the third part, The second part and the fourth part are electrically connected to each other within the hole. In a second direction perpendicular to the first direction from the first part to the third part, at least a part of one of the plurality of first conductive fibers included in the second part is between at least a part of one of the plurality of second conductive fibers included in the fourth part and at least a part of another one of the plurality of second conductive fibers included in the fourth part, an electrical connection component.

[0039] (Configuration 2) In the second direction, at least a part of the one of the plurality of second conductive fibers included in the fourth part is between at least a part of the one of the plurality of first conductive fibers included in the second part and at least a part of another one of the plurality of first conductive fibers included in the second part, the electrical connection component according to Configuration 1.

[0040] (Configuration 3) The intermediate member has insulation, the electrical connection component according to Configuration 1 or 2.

[0041] (Configuration 4) The intermediate member includes a non-woven fabric or a woven fabric, the electrical connection component according to any one of Configurations 1 to 3.

[0042] (Configuration 5) The third thickness along the first direction of the intermediate region is 10 μm or more and 500 μm or less, the electrical connection component according to any one of Configurations 1 to 4.

[0043] (Configuration 6) The first thickness along the first direction of the first part is 1 μm or more and 20 μm or less, the electrical connection component according to any one of Configurations 1 to 5.

[0044] (Configuration 7) The second thickness along the first direction of the second part is 1 μm or more and 20 μm or less, the electrical connection component according to any one of Configurations 1 to 6.

[0045] (Configuration 8) One of the plurality of first conductive fibers includes a first core member and a first conductive layer. The first core member includes a first side surface along a first extending direction in which the first core member extends. The first conductive layer is an electrical connection component according to any one of Configurations 1 to 7 provided on the first side surface.

[0046] (Configuration 9) The first core member is the electrical connection component according to Configuration 8, including a first resin.

[0047] (Configuration 10) The first resin is the electrical connection component according to Configuration 9, including at least one selected from the group consisting of polyurethane, polyurethane derivatives, polyvinyl alcohol, polyvinyl alcohol derivatives, polyvinylidene fluoride, polyvinylidene fluoride derivatives, and elastomeric materials.

[0048] (Configuration 11) The first conductive layer is the electrical connection component according to any one of Configurations 8 to 10, including at least one selected from the group consisting of gold, silver, copper, aluminum, and carbon.

[0049] (Configuration 12) The length of one of the plurality of first conductive fibers in a direction perpendicular to the first extending direction is 1 mm or more and 500 mm or less, which is the electrical connection component according to any one of Configurations 8 to 11.

[0050] (Configuration 13) One of the plurality of second conductive fibers includes a second core member and a second conductive layer. The second core member includes a second side surface along a second extending direction in which the second core member extends. The second conductive layer is the electrical connection component according to any one of Configurations 1 to 12 provided on the second side surface.

[0051] (Configuration 14) The second core member is the electrical connection component according to Configuration 13, including a second resin.

[0052] (Configuration 15) The second resin is the electrical connection component according to Configuration 14, including at least one selected from the group consisting of polyurethane, polyurethane derivatives, polyvinyl alcohol, polyvinyl alcohol derivatives, polyvinylidene fluoride, polyvinylidene fluoride derivatives, and elastomer-based materials.

[0053] (Configuration 16) The second conductive layer is the electrical connection component according to any one of Configurations 13 to 15, including at least one selected from the group consisting of gold, silver, copper, aluminum, and carbon.

[0054] (Configuration 17) The length of the one of the plurality of second conductive fibers in the direction perpendicular to the second extending direction is 1 mm or more and 500 mm or less, which is the electrical connection component according to any one of Configurations 13 to 16.

[0055] (Configuration 18) The width of the hole in the second direction is 100 μm or more and 10 mm or less, which is the electrical connection component according to any one of Configurations 1 to 17.

[0056] (Configuration 19) The electrical connection component according to any one of Configurations 1 to 18, A circuit part electrically connected to the second conductive member, An electronic device including the above.

[0057] (Configuration 20) The electronic device according to Configuration 19, further including an adhesive layer fixed to the first conductive member.

[0058] According to the embodiment, an electrical connection component and an electronic device capable of improving connection characteristics can be provided.

[0059] The embodiments of the present invention have been described above with reference to specific examples. However, the present invention is not limited to these specific examples. For example, regarding the specific configurations of each element such as the conductive member and the intermediate member included in the electrical connection component, those skilled in the art can appropriately select from the known range to implement the present invention in the same way, and as long as the same effects can be obtained, it is included in the scope of the present invention.

[0060] In addition, combinations of any two or more elements of each specific example within a technically possible range are also included in the scope of the present invention as long as they include the gist of the present invention.

[0061] In addition, based on the sensors described above as embodiments of the present invention, all sensors that can be appropriately designed and modified by those skilled in the art also belong to the scope of the present invention as long as they include the gist of the present invention.

[0062] In addition, within the scope of the idea of the present invention, those skilled in the art can conceive various modification examples and correction examples, and it is understood that those modification examples and correction examples also belong to the scope of the present invention.

Description of Reference Numerals

[0063] 10, 20: First and second conductive members, 10C, 20C: First and second core members, 10F, 20F: First and second conductive fibers, 10L, 20L: First and second conductive layers, 10S, 20S: First and second side surfaces, 11, 12: First and second parts, 23, 24: Third and fourth parts, 30: Intermediate member, 31: Intermediate region, 32: Hole, 41: Adhesive layer, 42a, 42b: First and second resin layers, 45a, 45b: First and second connection members, 80: Object, 110: Electrical connection component, 210: Electronic device, D1, D2: First and second directions, Dex1, Dex2: First and second extending directions, Dx1, Dx2: Directions, L32: Width, T1, T2: Widths, t1~t3: First to third thicknesses, t10L, t20L: Thicknesses

Claims

1. A first conductive member including a first part and a second part and including a plurality of first conductive fibers, A second conductive member including a third part and a fourth part and including a plurality of second conductive fibers, An intermediate member including an intermediate region and a hole, Comprising, The intermediate region is provided between the first part and the third part, The second part and the fourth part are electrically connected to each other within the hole, In a second direction perpendicular to a first direction from the first part to the third part, at least a part of one of the plurality of first conductive fibers included in the second part is between at least a part of one of the plurality of second conductive fibers included in the fourth part and at least a part of another one of the plurality of second conductive fibers included in the fourth part, an electrical connection component.

2. In the second direction, at least a part of the one of the plurality of second conductive fibers included in the fourth part is between at least a part of the one of the plurality of first conductive fibers included in the second part and at least a part of another one of the plurality of first conductive fibers included in the second part, the electrical connection component according to claim 1.

3. The intermediate member has insulation properties, the electrical connection component according to claim 1.

4. The intermediate member includes a non-woven fabric or a woven fabric, the electrical connection component according to claim 1.

5. One of the plurality of first conductive fibers includes a first core member and a first conductive layer, The first core member includes a first side surface along a first extending direction in which the first core member extends, The first conductive layer is provided on the first side surface, the electrical connection component according to any one of claims 1 to 4.

6. The electrical connection component according to claim 1, A circuit part electrically connected to the second conductive member, An electronic device comprising.

7. Further comprising an adhesive layer fixed to the first conductive member, the electronic device according to claim 6.

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