阅读说明：本技术 一种电子开关及柔性电子设备 (Electronic switch and flexible electronic equipment ) 是由 吴振广 余建平 刘宜伟 李润伟 于 2021-05-25 设计创作，主要内容包括：本发明提供一种电子开关与柔性电子设备。电子开关包括导电层、隔离层与电极层,隔离层位于导电层与电极层之间,为电绝缘材料,隔离层设置通孔；导电层设置两个存在电绝缘间隔的导电区域,两个导电区域分别连接正极引线与负极引线,正极引线与负极引线之间为电子元件。导电层和/或电极层施加外力时电极层具有一定弯曲能力,撤除外力时具有一定形状恢复能力。该开关结构中正极引线与负极引线位于同一层面,解决了上下电极结构中电极引线位于不同层面而导致的接线、布线等工艺复杂,操作难度大的问题,提高了开关可靠性与性能稳定性,可应用于柔性电子设备中。(The invention provides an electronic switch and a flexible electronic device. The electronic switch comprises a conductive layer, an isolation layer and an electrode layer, wherein the isolation layer is positioned between the conductive layer and the electrode layer and is made of an electrical insulating material, and the isolation layer is provided with a through hole; the conducting layer is provided with two conducting areas with electric insulation intervals, the two conducting areas are respectively connected with the anode lead and the cathode lead, and an electronic element is arranged between the anode lead and the cathode lead. The electrode layer has certain bending capability when external force is applied to the conductive layer and/or the electrode layer, and has certain shape recovery capability when the external force is removed. The switch structure has the advantages that the positive lead and the negative lead are located on the same layer, the problems that wiring, wiring and the like are complex and operation difficulty is high due to the fact that the electrode leads are located on different layers in the upper electrode structure and the lower electrode structure are solved, the reliability and the performance stability of the switch are improved, and the switch structure can be applied to flexible electronic equipment.)

1. An electronic switch comprises a conductive layer, an isolation layer and an electrode layer, wherein the isolation layer is positioned between the conductive layer and the electrode layer; the method is characterized in that:

the electrode layer is provided with a first conductive area, a second conductive area and an electric insulation area arranged between the first conductive area and the second conductive area; the first conductive area is connected with the anode lead, the second conductive area is connected with the cathode lead, and an electronic element is arranged between the anode lead and the cathode lead;

the isolation layer is made of an electric insulating material, and through holes are formed in the isolation layer at positions corresponding to the first conductive area and the second conductive area;

the conductive layer has certain bending capability when external force is applied to the conductive layer and has certain shape recovery capability when the external force is removed;

and/or the electrode layer has certain bending capacity when external force is applied to the electrode layer and has certain shape recovery capacity when the external force is removed.

2. The electronic switch of claim 1, wherein: the material of the conducting layer is obtained by mixing one or more of liquid, slurry, gel and solid granular conducting materials with a flowing elastomer and then curing the elastomer; or, the material is obtained by compounding elastic fabric and conductive metal material;

preferably, the liquid conductive material includes liquid metal, conductive ink;

preferably, the slurry-like conductive material includes graphene slurry, a mixed slurry of a conductive material and an elastomer;

preferably, the gelatinous conductive material includes graphite conductive paste, silver paste;

preferably, the solid particulate conductive material includes a metal powder.

3. The electronic switch of claim 1, wherein: the barrier layer is an elastic material.

4. The electronic switch of claim 3, wherein: the isolation layer comprises an elastic high polymer material and an elastic fabric material;

preferably, the isolation layer is one or more of thermoplastic elastomer (TPE), thermoplastic polyurethane elastomer rubber poly (TPU), dimethyl siloxane (PDMS), aliphatic aromatic random copolyester (Ecoflex), high molecular polymer resin, silica gel, rubber, hydrogel, polyurethane, polyethylene octene co-elastomer (POE), latex, sponge, and elastic cloth.

5. The electronic switch of claim 1, wherein: the electrode layer is obtained by forming a first conductive region and a second conductive region separated from each other on an insulating substrate;

preferably, the insulating base material is an elastic material;

preferably, the forming method comprises one or more of coating, deposition, bonding and printing.

6. The electronic switch of claim 1, wherein: the first conductive area corresponds to one through hole, and the second conductive area corresponds to the other through hole;

or, the first conductive region and the second conductive region correspond to a through hole.

7. The electronic switch of claim 1, wherein: the conducting layer, the isolating layer and the electrode layer are connected together at the edges of the layers through connecting pieces or are bonded together through bonding materials;

preferably, the adhesive material is an elastic material.

8. The electronic switch of claim 1, wherein: the conductive layer has certain bending capability when external force is applied to the conductive layer and has certain shape recovery capability when the external force is removed;

applying pressure on the conducting layer, wherein the conducting layer is bent and deformed to be in contact with the first conducting area and the second conducting area of the electrode layer through the through hole of the isolating layer, and the first conducting area is electrically connected with the second conducting area;

and the pressure of the conducting layer is removed, the conducting layer is separated from the electrode layer, and the first conducting area and the second conducting area of the electrode layer lose the electric connection.

9. The electronic switch of claim 1, wherein: the electrode layer has certain bending capacity when external force is applied to the electrode layer, and has certain shape recovery capacity when the external force is removed;

the electrode layer is pressed, the first conductive area and the second conductive area of the electrode layer are bent and deformed to be in contact with the conductive layer through the through hole of the isolation layer, and the first conductive area and the second conductive area are electrically connected;

and the pressure of the electrode layer is removed, the electrode layer is separated from the conductive layer, and the first conductive area and the second conductive area of the electrode layer lose the electric connection.

10. The electronic switch of claim 1, wherein: the conductive layer has certain bending capability when external force is applied to the conductive layer and has certain shape recovery capability when the external force is removed; the electrode layer has certain bending capacity when external force is applied to the electrode layer, and has certain shape recovery capacity when the external force is removed;

pressing the electrode layer and/or the conducting layer, wherein the conducting layer is in contact with a first conducting area and a second conducting area of the electrode layer, and an electric connection is formed between the first conducting area and the second conducting area;

and removing the pressure of the conductive layer and/or the electrode layer, separating the conductive layer and the electrode layer from each other, and losing the electric connection between the first conductive area and the second conductive area of the electrode layer.

11. The electronic switch of claim 1, wherein: the electrode layer is provided with a plurality of electrode units which are arranged in an array;

each electrode unit is provided with a first conductive area and a second conductive area, and an electric insulation area is arranged between the first conductive area and the second conductive area; the first conductive area is connected with the anode lead, and the second conductive area is connected with the cathode lead;

in the isolation layer, through holes are arranged at positions corresponding to the first conductive area and the second conductive area of each electrode unit.

12. The electronic switch of claim 11, wherein: each electrode unit comprises a light-emitting unit; alternatively, the positive electrode lead and the negative electrode lead are respectively connected with the control unit.

13. A flexible electronic device, characterized by: comprising an electronic switch according to any of claims 1 to 12.

14. The flexible electronic device of claim 13, wherein: the flexible electronic equipment is one of a flexible intelligent robot, a flexible electronic skin, a flexible electronic bionic device, a flexible wearable device and a flexible intelligent garment.

Technical Field

The invention belongs to the technical field of electronic circuits and flexible electronics, and particularly relates to an electronic switch and flexible electronic equipment.

Background

In an electronic circuit, a switch may be used to control whether the electronic circuit is on or off, and when on, certain electronic functions are achieved.

Patent document CN105931909A discloses a flexible fabric switch, which is a layered structure and includes an upper conductive layer, a lower conductive layer, and an elastic isolation layer disposed between the upper conductive layer and the lower conductive layer, wherein the elastic isolation layer is provided with through holes, and the upper conductive layer and the lower conductive layer are respectively connected with conductive wires. Compared with a rigid switch, the flexible fabric switch has improved bending resistance and shearing resistance due to the elastic isolation layer, can be embedded into textile clothing articles, but has the following problems:

the upper conductive layer and the lower conductive layer are respectively connected with the conductive wires, so that the flexible fabric switch belongs to an upper electrode structure and a lower electrode structure, namely, the conductive wires connected with the upper conductive layer and the lower conductive layer respectively form upper and lower electrode leads, and an electronic circuit with a certain function is positioned between the upper and lower electrodes. The patent document describes that the working principle of the flexible fabric switch with the upper and lower electrode structures is as follows: under the condition of pressure, the upper conducting layer and the lower conducting layer are in surface-to-surface contact through the through holes of the elastic isolating layer, and at the moment, the upper electrode and the lower electrode are conducted, so that the electronic circuit is conducted, and a certain function is realized; when the pressure is released, the upper conductive layer and the lower conductive layer are separated from each other due to the elastic isolation layer, and the upper electrode and the lower electrode are disconnected, so that the electronic circuit is disconnected. However, in the switch with the upper and lower electrode structures, the upper and lower electrode leads are not on the same layer, so that the processes of wiring, wiring and the like in actual preparation are complex, and the operation difficulty is high; moreover, when strain exists between the layers where the upper and lower electrode leads are located, the upper and lower electrode leads are deformed by pulling and the like, and the reliability and performance stability of the switch are greatly influenced.

Disclosure of Invention

In view of the above technical problems, the present invention provides an electronic switch, which has the advantages of simple structure, convenient wiring and system wiring, stable performance, simple use, etc.

The technical scheme provided by the invention is as follows: an electronic switch comprises a conductive layer, an isolation layer and an electrode layer, wherein the isolation layer is positioned between the conductive layer and the electrode layer; the method is characterized in that:

the electrode layer is provided with a first conductive area, a second conductive area and an electric insulation area positioned between the first conductive area and the second conductive area; the first conductive area is connected with the anode lead, the cathode lead of the second conductive area, and an electronic element is arranged between the anode lead and the cathode lead;

the isolation layer is made of an electric insulating material, and through holes are formed in the isolation layer at positions corresponding to the first conductive area and the second conductive area;

the conductive layer has certain bending capability when external force is applied to the conductive layer and has certain shape recovery capability when the external force is removed; and/or the electrode layer has certain bending capacity when external force is applied to the electrode layer and has certain shape recovery capacity when the external force is removed.

The material of the conductive layer is not limited, and for example, the conductive layer may be a metal sheet or the like.

As one implementation mode, the material of the conductive layer is obtained by mixing one or more of liquid, paste, gel and solid granular conductive materials with a flowing elastomer, and then curing the elastomer.

The conductive material in liquid state includes, but is not limited to, liquid metal, conductive ink, etc.; the conductive material in the form of slurry includes, but is not limited to, graphene slurry, mixed slurry of conductive material and elastomer; conductive materials in gel form include, but are not limited to, graphite conductive paste, silver paste, and the like; the conductive material in solid particle shape includes but is not limited to silver powder, nickel powder, copper powder, iron powder and other metal powder.

As another implementation, the material of the conductive layer is obtained by compounding an elastic fabric and a conductive metal material. For example, the surface of the non-conductive elastic fabric is coated with a layer of conductive material by a physical or chemical method. Also for example, by weaving of conductive yarns.

The isolation layer is not limited in material, and can be a rigid insulating material or an elastic insulating material. Preferably, the isolation layer is an elastic material, including but not limited to an elastic polymer material and an elastic fabric material, such as one or more of thermoplastic elastomer (TPE), thermoplastic polyurethane elastomer rubber poly (TPU), dimethyl siloxane (PDMS), aliphatic aromatic random copolyester (Ecoflex), high molecular polymer resin, silicone rubber, hydrogel, polyurethane, polyethylene octene co-elastomer (POE), latex, sponge, and elastic cloth.

The preparation method of the electrode layer is not limited. As one implementation, the first conductive region and the second conductive region are formed on the insulating substrate to be separated from each other. The forming method is not limited and includes coating, depositing, bonding, printing and the like. The insulating substrate material is not limited, and may be a rigid material or an elastic material.

The shape of the first conductive region is not limited, and may be a regular geometric shape such as a circle, a square, a rectangle, a triangle, or an irregular geometric shape.

The shape of the second conductive region is not limited, and may be a regular geometric shape such as a circle, a square, a rectangle, a triangle, or an irregular geometric shape.

The shape of the through hole is not limited, and the through hole can be a regular geometric shape such as a circle, a square, a rectangle, a triangle and the like, and can also be an irregular geometric shape.

The number of the through holes is not limited, the first conductive area can correspond to one through hole, and the second conductive area can correspond to the other through hole; or the first conductive region and the second conductive region jointly correspond to a through hole.

The electronic element is used for forming a conductive loop with the anode lead, the first conductive area, the second conductive area and the cathode lead, so that a certain electronic function is realized. The electronic element is not limited, and may be an active element or a passive element.

In order to improve the structural compactness and the portability of the electronic switch, the conductive layer, the isolation layer and the electrode layer are preferably connected together at the layer edge through a connecting piece or bonded together through a bonding material. The bonding material is not limited, and is preferably an elastic bonding material, including a hot melt type TPU film, an elastic adhesive or other elastic adhesives.

The use method of the electronic switch of the invention can be one of the following (1), (2) and (3):

(1) the conductive layer has certain bending capability when external force is applied to the conductive layer and has certain shape recovery capability when the external force is removed;

at the moment, the conducting layer is pressed, the conducting layer is bent and deformed to be in contact with the first conducting area and the second conducting area of the electrode layer through the through hole of the isolating layer, and the first conducting area is electrically connected with the second conducting area, so that the first conducting area, the anode lead, the electronic element, the second conducting area and the cathode lead form a closed conducting loop to realize a certain electronic function;

when the pressure of the conductive layer is removed, the shape of the conductive layer is recovered to a certain degree, the conductive layer and the electrode layer are separated from each other, and the first conductive area and the second conductive area of the electrode layer lose the electric connection, so that the conductive loop is disconnected.

(2) The electrode layer has certain bending capacity when external force is applied to the electrode layer, and has certain shape recovery capacity when the external force is removed;

at the moment, the electrode layer is pressed, the first conductive area and the second conductive area of the electrode layer are bent and deformed to be in contact with the conductive layer through the through hole of the isolation layer, and the first conductive area and the second conductive area are electrically connected, so that the first conductive area, the anode lead, the electronic element, the second conductive area and the cathode lead form a closed conductive loop to realize a certain electronic function;

when the pressure of the electrode layer is removed, the shape of the electrode layer is recovered to a certain degree, the electrode layer is separated from the conductive layer, and the first conductive area and the second conductive area of the electrode layer lose the electric connection, so that the conductive loop is disconnected.

(3) The conductive layer has certain bending capability when external force is applied to the conductive layer and has certain shape recovery capability when the external force is removed; the electrode layer has certain bending capacity when external force is applied to the electrode layer, and has certain shape recovery capacity when the external force is removed;

at the moment, the electrode layer is pressed and/or the conducting layer is pressed, the conducting layer is contacted with the first conducting area and the second conducting area of the electrode layer, and the first conducting area and the second conducting area are electrically connected, so that the first conducting area, the anode lead, the electronic element, the second conducting area and the cathode lead form a closed conducting loop to realize a certain electronic function;

when the pressure of the conductive layer is removed and/or the pressure of the electrode layer is removed, the conductive layer and the electrode layer are separated from each other, and the first conductive area and the second conductive area of the electrode layer lose the electric connection, so that the conductive loop is disconnected.

The electronic switch can form an electronic switch array, and at the moment, the electrode layer is provided with a plurality of electrode units arranged in an array; each electrode unit is provided with a first conductive area, a second conductive area and an electric insulation area arranged between the first conductive area and the second conductive area; the first conductive area is connected with the anode lead, the second conductive area is connected with the cathode lead, and an electronic element is arranged between the second conductive area and the cathode lead; in the isolation layer, through holes are arranged at positions corresponding to the first conductive area and the second conductive area of each electrode unit. Preferably, the conductive layer comprises a plurality of conductive units distributed in an array, and each conductive unit corresponds to the electrode unit of the electrode layer one by one. The electronic switch array can realize a certain positioning function.

As an implementation manner, each electrode unit includes a light-emitting unit, when the electronic switch array is under pressure, the electrode unit at the pressure position forms a closed loop, the light-emitting unit emits light, while the electrode unit at the non-pressure position and the electrode unit at the corresponding position with lower pressure fail to form a closed loop, and the light-emitting unit does not emit light, so that the pressure position can be positioned according to the light-emitting position.

In another implementation mode, the positive lead and the negative lead are respectively connected with the control unit, when the electronic switch array is under pressure, the electrode units at the pressure positions form a closed loop, the control unit detects that the switch units are closed when scanning detection is carried out, the electrode units at the non-pressure positions and the electrode units at the corresponding positions cannot form a closed loop due to small pressure, and the control unit detects that the switch units are opened when scanning detection is carried out.

The electronic switch comprises a conducting layer, a spacing layer and an electrode layer, wherein the electrode layer is provided with two conducting areas, the two conducting areas have an electric insulation spacing, and the two conducting areas are respectively connected with a positive lead and a negative lead, and compared with the prior art, the electronic switch has the following beneficial effects:

(1) the positive lead and the negative lead are located on the same layer in the electronic switch structure, so that the problems of complex wiring and wiring processes and the like caused by the fact that the electrode leads are located on different layers in the upper electrode structure and the lower electrode structure are solved, and the problem that the reliability and the performance stability of the switch caused by strain between the upper electrode lead layer and the lower electrode lead layer are affected is solved.

(2) The electronic switch has simple structure and simple use;

(3) electronic switches composed of rigid components are called rigid electronic switches, and such electronic switches have a harsh touch feeling when touched, and particularly, when such electronic switches are used in the field of flexible electronics, their abrupt rigid feeling cannot meet specific requirements. For example, in the field of flexible electronic technologies such as flexible smart robots, flexible electronic skins, flexible electronic bionics, flexible wearable devices, smart clothing, the use of rigid electronic switches will cause discomfort in wearing and a feeling of stiffness in use.

In the electronic switch, the conducting layer and/or the spacing layer have certain bending deformation capacity under the action of external force, and have certain shape recovery capacity when the external force is removed, so compared with the existing rigid electronic switch, the electronic switch has certain flexibility, particularly, when the isolating layer is made of flexible materials or even elastic materials, a fully flexible structure is realized, the electronic switch belongs to a flexible electronic switch, can be applied to the technical field of flexible electronics, and is combined with flexible electronic equipment such as flexible intelligent robots, flexible electronic skins, flexible electronic bionics, flexible wearable equipment, intelligent clothes and the like, and has no foreign body sensation when being used as an electronic element in the flexible electronic equipment, so that the wearing comfort and the use comfort can be improved.

Drawings

Fig. 1 is a schematic structural diagram of an electronic switch in embodiment 1 of the present invention.

Fig. 2 is a sectional view showing an electronic switch in an off state in embodiment 1 of the present invention.

Fig. 3 is a sectional view showing the electronic switch in the on state in embodiment 1 of the present invention.

Fig. 4 is a schematic structural diagram of an electronic switch in embodiment 2 of the present invention.

Fig. 5 is a sectional view showing the electronic switch in an off state in embodiment 3 of the present invention.

Fig. 6 is a sectional view of the electronic switch in the on state according to embodiment 4 of the present invention.

Fig. 7 is an exploded view of the spring array switch of example 5 of the present invention.

Fig. 8 is an exploded view of the spring array switch of example 6 of the present invention.

The reference signs are: the device comprises a conductive layer 1, an isolation layer 2, an electrode layer 3, a first conductive region 4, a second conductive region 5, a positive electrode lead 6, a negative electrode lead 7, an electronic element 8, a through hole 9, a through hole 10, an electrode unit 11, a conductive unit 12 and a control unit 13.

Detailed Description

The invention will be described in further detail below with reference to the accompanying drawings and examples, which are intended to facilitate the understanding of the invention and are not intended to limit the invention in any way.

Example 1:

as shown in fig. 1, the electronic switch has a top-bottom laminated structure, which includes a conductive layer 1, an isolation layer 2 and an electrode layer 3 from top to bottom.

The electrode layer 3 is provided with a first conductive area 4 and a second conductive area 5 which are rectangular, the first conductive area 4 and the second conductive area 5 are electrically insulated and separated, and the distance between the first conductive area 4 and the second conductive area 5 is 0.2-5 mm; the first conductive region 4 is connected to a positive electrode lead 6, the second conductive region 5 is connected to a negative electrode lead 7, and an electronic element 8 is arranged between the positive electrode lead 6 and the negative electrode lead 7.

In this embodiment, the conductive layer 1 is made of elastic silver fiber cloth.

In this embodiment, the material of the first conductive region and the material of the second conductive region are both elastic silver fiber cloth, and the electrode layer is formed by bonding the material of the first conductive region and the second conductive region on the elastic insulating substrate at a certain distance.

In this embodiment, the isolation layer 2 is made of elastic latex, and a circular through hole 9 is formed in the middle of the isolation layer and corresponds to the first conductive region 4 and the second conductive region 5 of the electrode layer.

In this embodiment, the peripheral edges of the conductive layer 1, the separator 2, and the electrode layer 3 are bonded together by an adhesive, and the adhesive is a TPU hot melt film.

In this embodiment, the electronic switch is an elastic electronic switch, and the preparation method thereof includes the following steps:

(1) cutting the elastic silver fiber cloth into a conductive layer by using a laser cutting machine;

(2) cutting the latex sheet into an isolation layer by using a laser cutting machine;

(3) the method comprises the following steps of cutting elastic silver fiber cloth into conducting strips by using a laser cutting machine, cutting common elastic knitted cloth into an elastic substrate, utilizing a TPU hot melt film to hot press the two conducting strips to the elastic substrate to form an electrode layer, utilizing conducting resin to bond a positive lead of an electronic circuit on one conducting strip, and bonding a negative lead of the electronic circuit on the other conducting strip.

(4) And overlapping the conductive layer, the isolation layer and the electrodes prepared in the steps, hot-pressing a TPU hot-melt film at the edge between the layers, and then hot-pressing the layers together to form the elastic electronic switch.

The initial state of the elastic electronic switch is shown in fig. 2. When the conductive layer is pressed, as shown in fig. 3, the conductive layer is bent and deformed to contact the first conductive region 4 and the second conductive region 5 of the electrode layer through the through hole 9 of the isolation layer, and the first conductive region 4 and the second conductive region 5 are electrically connected, so that the first conductive region 4, the positive lead 6, the electronic element 8, the second conductive region 5 and the negative lead 7 form a closed conductive loop, thereby implementing a certain electronic function. When the pressure on the conductive layer is released, the conductive layer returns to the shape as shown in fig. 2 and separates from the electrode layer due to the presence of the separation layer, the electrical connection between the first conductive region and the second conductive region of the electrode layer is lost, and the conductive circuit is disconnected.

Example 2:

as shown in fig. 4, the electronic switch has a top-bottom laminated structure, and includes a conductive layer 1, an isolation layer 2, and an electrode layer 3 in this order from bottom to top.

The electrode layer 3 is provided with a first conductive area 4 and a second conductive area 5 which are rectangular, the first conductive area 4 and the second conductive area 5 are electrically insulated and separated, and the distance between the first conductive area 4 and the second conductive area 5 is 0.2-5 mm; the first conductive region 4 is connected to a positive electrode lead 6, the second conductive region 5 is connected to a negative electrode lead 7, and an electronic element 8 is arranged between the positive electrode lead 6 and the negative electrode lead 7.

In this embodiment, the conductive layer 1 is made of an elastic silver fiber cloth fabric.

In this embodiment, the electrode layer includes an elastic insulating substrate, and a first conductive material and a second conductive material on the elastic insulating substrate, wherein the first conductive material forms the first conductive region 4, and the second conductive material forms the second conductive region 5. The elastic insulating substrate is made of non-conductive elastic cloth, and the first conductive material and the second conductive material are made of elastic silver fiber cloth. Preferably, the distance between the two elastic electrodes is 0.2-5 mm.

In this embodiment, the isolation layer 2 is made of an elastic latex layer, and a circular through hole 9 and a circular through hole 10 are formed in the middle of the isolation layer and correspond to the first conductive region 4 and the second conductive region 5 of the electrode layer respectively.

In this embodiment, the peripheral edges of the conductive layer 1, the separator 2, and the electrode layer 3 are bonded together by an adhesive, and the adhesive is a TPU hot melt film.

In this embodiment, the electronic switch is an elastic electronic switch, and the preparation method thereof includes the following steps:

(1) cutting the elastic silver fiber cloth into a conductive layer by using a laser cutting machine;

(2) cutting the latex sheet into an isolation layer by using a laser cutting machine;

(3) the method comprises the following steps of cutting elastic silver fiber cloth into conducting strips by using a laser cutting machine, cutting common elastic knitted cloth into an elastic substrate, utilizing a TPU hot melt film to hot press the two conducting strips to the elastic substrate to form an electrode layer, utilizing conducting resin to bond a positive lead of an electronic circuit on one conducting strip, and bonding a negative lead of the electronic circuit on the other conducting strip.

(4) And overlapping the conductive layer, the isolation layer and the electrodes prepared in the steps, hot-pressing a TPU hot-melt film at the edge between the layers, and then hot-pressing the layers together to form the elastic electronic switch.

The initial state of the elastic electronic switch is shown in fig. 5. When pressure is applied to the electrode layer, as shown in fig. 6, the electrode layer is bent and deformed so that the first conductive region 4 of the electrode layer contacts the conductive layer through the through hole 9 of the isolation layer, the second conductive region 5 contacts the conductive layer through the through hole 10 of the isolation layer, and the first conductive region 4 and the second conductive region 5 are electrically connected, so that the first conductive region 4, the positive lead 6, the electronic element 8, the second conductive region 5, and the negative lead 7 form a closed conductive loop to realize a certain electronic function. When the pressure on the conductive layer is released, the electrode layer returns to the shape as shown in fig. 5 and separates from the electrode layer due to the presence of the separation layer, the electrical connection between the first conductive region and the second conductive region of the electrode layer is lost, and the conductive circuit is disconnected.

Example 3:

as shown in fig. 1, the electronic switch has a top-bottom laminated structure, which includes a conductive layer 1, an isolation layer 2 and an electrode layer 3 from top to bottom.

The electrode layer 3 is provided with a first conductive area 4 and a second conductive area 5 which are rectangular, the first conductive area 4 and the second conductive area 5 are electrically insulated and separated, and the distance between the first conductive area 4 and the second conductive area 5 is 0.2-5 mm; the first conductive region 4 is connected to a positive electrode lead 6, the second conductive region 5 is connected to a negative electrode lead 7, and an electronic element 8 is arranged between the positive electrode lead 6 and the negative electrode lead 7.

In this embodiment, the conductive layer 1 is made of an elastic material obtained by mixing silver powder and PDMS and then curing the mixture.

In this embodiment, the material of the first conductive region and the material of the second conductive region are both elastic materials obtained by mixing silver powder and PDMS and then curing, and the electrode layer is formed by bonding the material of the first conductive region and the second conductive region on the elastic insulating polymer material at a certain distance.

In this embodiment, the isolation layer 2 is an elastic latex layer, and a circular through hole 9 is formed in the middle of the isolation layer and corresponds to the first conductive region 4 and the second conductive region 5 of the electrode layer.

In this embodiment, the peripheral edges of the conductive layer 1, the separator 2, and the electrode layer 3 are bonded together by an elastic adhesive.

The preparation method of the electronic switch comprises the following steps:

(1) cutting the elastic material obtained by mixing and curing silver powder and PDMS into a conductive layer by using a laser cutting machine;

(2) cutting the latex sheet into an isolation layer by using a laser cutting machine;

(3) the method comprises the steps of mixing silver powder and PDMS (polydimethylsiloxane) by using a laser cutting machine, curing to obtain an elastic material, cutting a common insulating high polymer material into elastic substrates, adhering the two conductive sheets to the elastic substrates by using an elastic adhesive to form an electrode layer, adhering an anode lead of an electronic circuit to one conductive sheet by using a conductive adhesive, and adhering a cathode lead of the electronic circuit to the other conductive sheet.

(4) And overlapping the conductive layer, the isolation layer and the electrode prepared in the steps, coating adhesive on the edges between the layers, and then bonding the layers together to form the elastic electronic switch.

The initial state of the elastic electronic switch is shown in fig. 2. When the conductive layer is pressed, as shown in fig. 3, the conductive layer is bent and deformed to contact the first conductive region 4 and the second conductive region 5 of the electrode layer through the through hole 9 of the isolation layer, and the first conductive region 4 and the second conductive region 5 are electrically connected, so that the first conductive region 4, the positive lead 6, the electronic element 8, the second conductive region 5 and the negative lead 7 form a closed conductive loop, thereby implementing a certain electronic function. When the pressure on the conductive layer is released, the conductive layer returns to the shape as shown in fig. 2 and separates from the electrode layer due to the presence of the separation layer, the electrical connection between the first conductive region and the second conductive region of the electrode layer is lost, and the conductive circuit is disconnected.

Example 4:

as shown in fig. 4, the electronic switch has a top-bottom laminated structure, and includes a conductive layer 1, an isolation layer 2, and an electrode layer 3 in this order from bottom to top.

The electrode layer 3 is provided with a first conductive area 4 and a second conductive area 5 which are rectangular, the first conductive area 4 and the second conductive area 5 are electrically insulated and separated, and the distance between the first conductive area 4 and the second conductive area 5 is 0.2-5 mm; the first conductive region 4 is connected to a positive electrode lead 6, the second conductive region 5 is connected to a negative electrode lead 7, and an electronic element 8 is arranged between the positive electrode lead 6 and the negative electrode lead 7.

In this embodiment, the conductive layer 1 is made of an elastic conductive material obtained by mixing and curing liquid metal and PDMS.

In this embodiment, the material of the first conductive region and the material of the second conductive region are both elastic conductive materials obtained by mixing liquid metal and PDMS and then curing, and the electrode layer is formed by bonding the material of the first conductive region and the second conductive region on the elastic insulating polymer material at a certain distance.

In this embodiment, the isolation layer 2 is made of an elastic latex layer, and a circular through hole 9 and a circular through hole 10 are formed in the middle of the isolation layer and correspond to the first conductive region 4 and the second conductive region 5 of the electrode layer respectively.

In this embodiment, the peripheral edges of the conductive layer 1, the separator 2, and the electrode layer 3 are bonded together by an elastic adhesive.

In this embodiment, the electronic switch is an elastic electronic switch, and the preparation method thereof includes the following steps:

(1) cutting an elastic conductive material obtained by mixing and curing liquid metal and PDMS into a conductive layer by using a laser cutting machine;

(2) cutting the latex sheet into an isolation layer by using a laser cutting machine;

(3) the method comprises the steps of mixing liquid metal and PDMS (polydimethylsiloxane), curing to obtain an elastic conductive material, cutting the elastic conductive material into conductive sheets by using a laser cutting machine, cutting a common insulating high polymer material into an elastic substrate, adhering two conductive sheets to the elastic substrate by using an elastic adhesive to form an electrode layer, adhering an anode lead of an electronic circuit to one conductive sheet by using a conductive adhesive, and adhering a cathode lead of the electronic circuit to the other conductive sheet.

(4) And overlapping the conductive layer, the isolation layer and the electrode prepared in the steps, coating adhesive on the edges between the layers, and then bonding the layers together to form the elastic electronic switch.

The initial state of the elastic electronic switch is shown in fig. 5. When pressure is applied to the electrode layer, as shown in fig. 6, the electrode layer is bent and deformed so that the first conductive region 4 of the electrode layer contacts the conductive layer through the through hole 9 of the isolation layer, the second conductive region 5 contacts the conductive layer through the through hole 10 of the isolation layer, and the first conductive region 4 and the second conductive region 5 are electrically connected, so that the first conductive region 4, the positive lead 6, the electronic element 8, the second conductive region 5, and the negative lead 7 form a closed conductive loop to realize a certain electronic function. When the pressure on the conductive layer is released, the electrode layer returns to the shape as shown in fig. 5 and separates from the electrode layer due to the presence of the separation layer, the electrical connection between the first conductive region and the second conductive region of the electrode layer is lost, and the conductive circuit is disconnected.

Example 5:

as shown in fig. 7, the elastic array switch has a top-bottom stacked structure, and comprises a conductive layer 1, an isolation layer 2, and an electrode layer 3 from bottom to top.

As shown in fig. 7, the electrode layer is provided with a plurality of electrode units 11 arranged in a rectangular array, a plurality of positive leads 6 and a plurality of negative leads 7, and each positive lead and each negative lead are arranged in a crossing manner. Each electrode unit 11 is provided with a first conductive area and a second conductive area, and an electric insulation separation is arranged between the first conductive area and the second conductive area; the first conductive region is connected to a positive lead 6 and the second conductive region is connected to a negative lead 7. Each positive electrode lead is connected to the control unit 13, and each negative electrode lead is connected to the control unit 13.

The isolation layer is made of elastic latex materials, and through holes 9 are formed in the positions corresponding to the first conductive area and the second conductive area of each electrode unit.

The conductive layer comprises a plurality of conductive units 12 distributed in an array, and each conductive unit 12 corresponds to the electrode unit 11 one by one.

The conductive unit is made of an elastic material obtained by mixing silver powder and PDMS and then curing.

In the electrode unit, the material of the first conductive region and the material of the second conductive region are both elastic materials obtained by mixing silver powder and PDMS and then curing, and the electrode layer is formed by bonding the material of the first conductive region and the material of the second conductive region on the elastic insulating high polymer material at intervals.

Applying pressure on the conducting layer, when a certain conducting unit is bent and deformed to be in contact with the first conducting area and the second conducting area of the electrode unit at the corresponding positions through the through hole of the isolating layer, so that the first conducting area and the second conducting area of the electrode unit are electrically connected to form a closed loop, scanning is performed by the control unit, and when the switch state at the row-column intersection point is detected, the switch unit is detected to be in a closed state; when the other conductive units are not bent or bent but the deformation is not enough to enable the conductive units to be in contact with the first conductive areas and the second conductive areas of the electrode units at the corresponding positions through the through holes of the isolation layer to form a closed loop, the control unit scans and detects the switch state at the row-column intersection point, and the switch unit is detected to be in an open state.

The elastic electronic switch array can realize a certain positioning function. For example, the elastic electronic switch array is arranged in intelligent furniture, such as a bed, a mattress, a seat, a wheelchair, a sofa, a seat and other articles, and can be used for monitoring the distribution of the pressure applied to the articles by a human body.

Example 6:

as shown in fig. 8, the elastic array switch has a top-bottom stacked structure, and comprises a conductive layer 1, an isolation layer 2, and an electrode layer 3 from bottom to top.

As shown in fig. 8, the electrode layer is provided with a plurality of electrode units 11 arranged in a rectangular array, a plurality of positive leads 6 and a plurality of negative leads 7, and each positive lead and each negative lead are arranged in a crossing manner. Each electrode unit 11 is provided with a first conductive area and a second conductive area, and an electric insulation separation is arranged between the first conductive area and the second conductive area; the first conductive region is connected to a positive electrode lead 6, the second conductive region is connected to a negative electrode lead 7, and an electronic component 8 is provided between the positive electrode lead 6 and the negative electrode lead 7.

The isolation layer is made of elastic latex materials, and through holes 9 are formed in the positions corresponding to the first conductive area and the second conductive area of each electrode unit.

The conductive layer comprises a plurality of conductive units 12 distributed in an array, and each conductive unit 12 corresponds to the electrode unit 11 one by one.

The conductive unit is made of an elastic conductive material obtained by mixing liquid metal and PDMS and then curing.

In the electrode unit, the material of the first conductive region and the material of the second conductive region are both elastic conductive materials obtained by mixing liquid metal and PDMS and then curing, and the electrode layer is formed by bonding the material of the first conductive region and the second conductive region on an elastic insulating high polymer material at a certain interval.

In this embodiment, the electronic element 8 is a light-emitting element.

Applying pressure on the conducting layer, and when a certain conducting unit is bent and deformed to be in contact with the first conducting area and the second conducting area of the electrode unit at the corresponding positions through the through hole of the isolating layer, forming electric connection between the first conducting area and the second conducting area of the electrode unit to form a closed loop, so that the light-emitting element emits light; when other conductive units are not bent or bent but the deformation is not enough to enable the conductive units to contact the first conductive area and the second conductive area of the electrode unit at the corresponding positions through the through holes of the isolation layer to form a closed loop, the light-emitting unit does not emit light. The distribution of pressure can be visually displayed by the light emitting unit.

The elastic electronic switch array can realize a certain pressure distribution detection function. For example, the elastic electronic switch array is arranged in intelligent furniture, such as a bed, a mattress, a seat, a wheelchair, a sofa, a seat and other articles, and can be used for monitoring the distribution of the pressure applied to the articles by a human body.

The embodiments described above are intended to illustrate the technical solutions of the present invention in detail, and it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modification, supplement or similar substitution made within the scope of the principles of the present invention should be included in the protection scope of the present invention.