48 results about "Stretchable electronics" patented technology

This invention discloses a stretchable electronic device, including a first reflective panel. The first reflective panel includes a first substrate, a second substrate, a first liquid crystal layer, a first sealant, and a first material layer. The first substrate has at least one first opening. The second substrate is positioned opposite the first substrate. The first liquid crystal layer is disposed between the first substrate and the second substrate. The first sealant is disposed between the first substrate and the second substrate and adjacent to the first liquid crystal layer. The first material layer is disposed in at least one first opening, wherein the material of the first material layer is different from the material of the first substrate.

The present invention relates to an ink composition, a kit comprising components of the ink composition, a method of manufacturing a deformable conductor utilizing the ink composition, a deformable conductor obtainable by the method, an electronic device, in particular a wearable and / or stretchable electronic device, comprising the deformable conductor, a method of manufactuing a conductor, a conductor obtainable by the method and an electronic device comprising the conductor. The ink composition comprises a source of transition metal ions, a reducing agent and a polymer and / or a polymer precursor, the polymer precursor comprising a polymerizable terminal multiple bond. The method of manufacturing a deformable conductor comprises the steps of applying the ink composition on at least a part of a surface of a deformable substrate and thermally treating and / or irradiating the ink composition.

Described herein are compositions and methods for wetting and adhering noble metal inks to silicone substrates. The metal ink-silicone interface is modified by functionalizing the surface of noble metal nanoparticles (NPs) or nanowires (NWs), and / or the surface of silicone substrates, with a small molecule binder for thiol-noble metal bonding.

According to an aspect, a stretchable device includes: a resin base member; and a strain gauge, a signal line, and an output line stacked on the resin base member. The resin base member includes: a plurality of bodies disposed separately from each other; and a plurality of hinges that couple the bodies adjacently disposed while meandering in an intersecting direction intersecting an imaginary line that couples the bodies adjacently disposed. The hinges include a first hinge and a second hinge that couple the bodies adjacently disposed. A meander length of the second hinge in the intersecting direction is longer than a meander length of the first hinge in the intersecting direction. The strain gauge is provided to the first hinge. The signal line and the output line are provided to the second hinge.

The invention discloses a flexible array type stretchable electronic skin and a preparation method thereof, is used for collecting surface electromyogram signals of a human body, and relates to the technical field of flexible electronics and bioelectricity detection. The stretchable electronic skin comprises a supporting layer, a substrate layer, an electromyographic signal transmission layer and a hydrogel interface layer, the supporting layer is made of a single-sided viscous material with certain physical rigidity and provides necessary structural rigidity; the substrate layer and the supporting layer are bonded and fixed; the electromyographic signal transmission layer is adhered to the surface of the substrate layer, and the electromyographic signal transmission layer is made of a flexible PCB (Printed Circuit Board) material; the hydrogel interface layer is arranged on the surface of an electrode contact of the electromyographic signal transmission layer and serves as a conducting medium between the electronic skin and the human epidermis. The electronic skin provided by the invention has good myographic signal to noise ratio, reusability, fitting performance and tensile property.

The present application belongs to the technical field of electronic skin, and particularly relates to a gelled ionic liquid, a preparation method and application thereof, and a gelled ionic liquid electronic skin, a preparation method and application thereof. The gelled ionic liquid is obtained by mixing 1-butyl-3-methyl imidazole tetrafluoroborate and N,N'-di(2-hydroxyethyl)oxamide for gelling. The gelled ionic liquid obtained by the present application retains the wide temperature range characteristics of 1-butyl-3-methyl imidazole tetrafluoroborate, and significantly improves the viscosity and resistance stability thereof. The gelled product is used as a conductive material for preparing stretchable electronic skin, and the electronic skin obtained has high-performance wide temperature range detection capability, and can be flexibly assembled in an array to realize recognition of the number, position and contour of objects placed, recognition of the speed, trajectory and number of objects sliding, and precise recognition of single numbers and complete sentence hand gestures.

The present application relates to a stretchable electronic device and a manufacturing method thereof. The stretchable electronic device can overcome a trade-off between a light-emitting area and a maximum tensile ratio of a two-dimensional stretchable display, and exhibit a high tensile ratio while having excellent initial-driving performance. In addition, the stretchable electronic device can be applied to various electronic elements by excluding high-temperature and wet processes of a conventional three-dimensional stretchable display technology. The stretchable electronic device according to one embodiment of the present invention comprises: an elastic substrate; an adhesive layer disposed on the elastic substrate; an anti-adhesive layer disposed on the adhesive layer so as not to cover the edge of the adhesive layer; a plurality of islands disposed on the adhesive layer and the anti-adhesive layer so as to be spaced apart from each other; and interconnectors for connecting the plurality of islands.

The invention discloses a flexible and stretchable wiring structure and a phototherapy skin patch, and relates to the technical field of flexible and stretchable electronics. The wiring structure comprises a stretchable base material and a wiring part formed on the stretchable base material, wherein the wiring part is of a stretchable structure and comprises a single wiring structure which is formed by mutually connecting at least two single S-shaped conductive circuits which are laid in parallel. According to the embodiment of the invention, the wiring part is a single stretchable wiring structure formed by mutually connecting at least two single S conductive circuits laid in parallel, and compared with a traditional single S wiring structure, the single wiring structure is formed by interweaving and connecting multiple circuits in parallel, so that the single S conductive circuit can be connected in parallel under the condition that a local circuit is excessively stretched to cause an open circuit; other lines in the parallel structure can still ensure that the whole wiring part keeps conductive performance, and the risk of open circuit caused by stretching of the wiring part is effectively reduced.

Disclosed are processes and materials for adhesive circuit patterning which strengthen and protect printed circuit traces and adhesive bonded joints of surface mounted devices in flexible or stretchable electronics in a single process. A method for adhesive circuit pattering include deposing a circuit pattern directly on a single thermal adhesive film, placing one or more surface mounted devices on a cured deposed circuit of the deposed circuit pattern, curing the one or more surface mounted devices and the cured deposed circuit together to form an assembled deposed circuit, placing the assembled deposed circuit on a stretchable substrate, and melting the single thermal adhesive film directly onto the assembled deposed circuit and the stretchable substrate to reinforce joint bonds of the assembled deposed circuit and to attach the assembled deposed circuit to the stretchable substrate.

Provided is a stretchable electronic device. The stretchable electronic device includes: a substrate; a plurality of electronic elements disposed on the substrate; and a line part configured to connect the electronic elements on the substrate and having a curved portion. Here, the line part includes: an insulator; and a plurality of metal lines disposed on the insulator, and the metal lines include: outermost metal lines adjacent to edges of the insulator; and inner metal lines disposed between the outermost metal lines. Also, a first ratio of a first distance between the outermost metal lines and the edges of the insulator to a first width of each of the outermost metal lines is greater than a second ratio of a second distance between the inner metal lines to a second width of each of the inner metal lines.

The invention discloses an anisotropic conductive stretchable electronic solder and a preparation method and application thereof, the stretchable electronic solder comprises a polymer adhesive and a silver nanosheet, and the mass ratio of the polymer adhesive to the silver nanosheet is (5-20): 1; the high-molecular adhesive is obtained by heating bisphenol A diglycidyl ether, polyethylene glycol diglycidyl ether and furfuryl amine at 40-60 DEG C to react, and then heating with N, N '-(4, 4'-methylene diphenyl) bismaleimide at 60-80 DEG C to react. According to the anisotropic conductive stretchable electronic solder provided by the invention, by virtue of excellent flexibility and stretchability endowed by the dynamic chemical polymer adhesive, the problem of stress concentration caused by physicochemical property difference of a soft / hard base material can be effectively counteracted, stable connection of an electrical interface is always kept in a stretching deformation process, and the reliability of the electronic solder is improved. Universal welding of flexible, stretchable and rigid materials and devices is successfully achieved.

A method for fabricating a flexible or stretchable printed circuit includes providing a substrate including a polyethylene terephthalate (PET) support layer, a thermoplastic urethane (TPU) layer, and a hot melt adhesive (HMA) disposed between the PET and TPU layers, pre-shrunk processing the substrate, printing a resistive layer on the TPU layer of the substrate, printing an insulating layer on the resistive layer, removing the PET support layer, and transferring a portion of the substrate to the flexible or stretchable layer.

The invention discloses a flexible and stretchable wiring structure, and relates to the technical field of flexible and stretchable electronics. The wiring structure comprises a stretchable base material and a first conductive circuit formed on the stretchable base material, the first conductive circuit comprises a wiring part, an interconnection part and an external connection part which are connected in sequence; the external connection part is used for being connected with other conductive structures; the interconnection part is of a stretchable structure, and the external connection part is of an anti-stretching structure. The length of the contact surface of the interconnection part and the external connection part is not less than 1 / 3 of the circumference of the external connection part, and the contact surface has at least one inflection point. According to the embodiment of the invention, the stretchable interconnection part is additionally arranged between the wiring part and the external connection part, the length of the contact surface between the stretchable interconnection part and the tensile external connection part is increased, and at least one inflection point is designed on the contact surface, so that the risk of open circuit during single-direction stretching can be reduced.

The application discloses a stretchable transparent electrode and a preparation method thereof. The stretchable transparent electrode comprises an elastic substrate and a multilayer layout flexible transparent conductive film; the multilayer layout flexible transparent conductive film is a double-layer conductive polymer film which is surface-modified, and a layer of conductive metal network is deposited on the surface-modified layer; the surface modification is to spin a layer of hydrophobic material on the surface of the double-layer conductive polymer film. The preparation method of the stretchable transparent electrode comprises the following steps: spin-coating a double-layer conductive polymer on a substrate; chemically modifying the double-layer conductive polymer; printing a conductive metal network on the double-layer conductive polymer; and transferring the double-layer conductive polymer / conductive metal network to the elastic substrate to obtain the stretchable transparent electrode. The stretchable transparent electrode prepared by the method has excellent photoelectric performance and excellent stretchability, and has a wide application prospect in the field of flexible stretchable electronic devices.

The embodiment of the invention provides a three-dimensional sensor and a preparation method thereof, and relates to the technical field of stretchable electronics. The three-dimensional sensor comprises a first layer structure, a dielectric layer and a second layer structure which are stacked in sequence. In the first layer structure, the first flexible areas and the first rigid areas are alternately arranged in the first direction, the first strain sensing layers are arranged on the sides, close to the second layer structure, of the first flexible areas, and the first electrode layers are arranged on the sides, close to the second layer structure, of the first rigid areas. In the second-layer structure, the second flexible areas and the second rigid areas are alternately arranged in the second direction, the second strain sensing layers are arranged on the sides, close to the first-layer structure, of the second flexible areas, and the second electrode layers are arranged on the sides, close to the first-layer structure, of the second rigid areas. The first strain sensing layer is used for detecting stress in a first direction, the second strain sensing layer is used for detecting stress in a second direction, and the first electrode layer and the second electrode layer are used for detecting capacitance change so as to realize pressure detection, so that three-dimensional detection is realized.

The invention relates to a flexible transparent electrode with an embedded periodic conductive structure and a preparation method of the flexible transparent electrode. The flexible transparent electrode comprises a flexible stretchable transparent elastomer substrate and a periodic patterned conductive micro-nano structure embedded into the elastomer substrate, the conductive micro-nano structure is an integrated structure which is formed by directly constructing conductive ink in a liquid elastomer substrate through a micro-nano printing technology and curing the conductive ink, the flexible transparent electrode has the characteristics of high conductivity, high light transmittance and high stretchability, the sheet resistance of the electrode can be less than 300 omega / sq, the light transmittance at the wavelength of 550 nm is more than 75%, the resistance change rate is less than 18% after circulation for 100 times under 50% tensile strain, and the flexible transparent electrode has the characteristics of high conductivity, high light transmittance and high stretchability. According to the preparation method, digital printing and liquid environment in-situ forming are combined, the conductive structure can be accurately regulated and controlled, the method is simple and suitable for large-area preparation so as to replace an indium tin oxide ITO transparent electrode, and a feasible path is provided for large-area and low-cost production of high-performance stretchable electronic devices.

The invention discloses self-repairing polyurethane with high light transmittance, high toughness and scratch resistance and a preparation method of the self-repairing polyurethane. The structural formula of the high-light-transmittance, high-toughness, scratch-resistant and self-repairing polyurethane is # imgabs0 #, n is more than or equal to 20 and less than or equal to 40, and the polyurethane is formed by mixing and polycondensing isophorone diisocyanate, polyether amine, hexamethylenediamine and micromolecular monohydric alcohol. The preparation method disclosed by the invention is simple and convenient, and the prepared polyurethane can complete an efficient self-repairing process at the temperature of 75 DEG C or above, has high light transmittance, high toughness and rapid recovery capability, and has wide application prospects in the fields of flexible sensors, stretchable electronic devices and the like.

The invention discloses a flexible stretchable packaging structure and a phototherapy patch, and relates to the technical field of flexible stretchable electronics. The packaging structure comprises a stretchable substrate; the elastic conductive circuit is arranged on the stretchable substrate and comprises a first wire, a second wire and a bonding pad which are connected with one another; the stretchable package is arranged on the stretchable substrate, covers the first wire and is provided with a bonding pad for exposing the elastic conductive circuit and a window for exposing the second wire; the electronic device is arranged on the bonding pad; the tensile packaging at the joint of the electronic device and the bonding pad is reinforced, the second wire in the open window is covered, and the part around the open window can be subjected to tensile packaging; a portion of the first wire is vertically opposite to a portion of the tensile package across the tensile package. The stretchable conductive structure is formed by the stretchable substrate, the elastic conductive circuit and the stretchable package, connection and reinforcement between the LED lamp beads and the elastic conductive circuit are completed through the stretch-resistant package, and the risk of tensile fracture between the LED lamp beads and the elastic conductive circuit is reduced.

The capillary transfer technology presented here represents a powerful approach to transfer soft films from surface of liquid onto a solid substrate in a fast and defect-free manner. The fundamental theoretical model and transfer criteria validated with comprehensive experiments and finite element analyses, for the first time provides a quantitative guide and optimization for the choice of material systems, operating conditions and environments for scalable on-demand transfers with high yield. The intrinsically moderate capillary transfer force and externally selectable transfer direction offer robust capabilities for achieving deterministic assembly and surface properties of structures with complex layouts and patterns for potentially broad applications in the fabrication of flexible / stretchable electronics, surface wetting structures and optical devices. Integration of this technology with other advanced manufacturing technologies associated with material self-assembly, growth and layout alignment represents promising future topics and would help create emerging new manufacturing technologies that leverage unique fluidity of liquid environments.

Provided are a thin-film liquid metal electrode, a method of fabricating the same using a sequential deposition, and a stretchable electronic device using the electrode fabricated therefrom. The thin-film liquid metal electrode may be applied to various application fields, such as a solar cell, a display, a biosensor, and a flexible / stretchable device using the thin-film liquid metal electrode by providing the thin-film liquid metal electrode in which at least two types of liquid metal nanoclusters are sequentially over-layered with an oxide film in therebetween and deposited as thin films on a surface-treated stretchable substrate in an over-layered structure, by fabricating the liquid metal nanoclusters in a no-direct contact structure, and by implementing negative piezoresistivity (NPR) property in which resistance decreases up to 85% during first 50% stretching since an additional electrical path is generated between two liquid metal nanoclusters as the oxide film is ruptured due to mechanical deformation.

The application discloses a kind of high tensile high conductive hydrogel with layered structure and its preparation method and application.The method mixes PVA, PEDOT:PSS with EGaIn microparticles, and is prepared by the way of gravity settlement and electrostatic adsorption auxiliary settlement, and the hydrogel with layered structure is obtained.By controlling the proportion of PVA, PEDOT:PSS solution and EGaIn microparticles, the conductive hydrogel with layered structure prepared shows good conductive capacity and mechanical behavior, and can work normally under larger strain and stress conditions, and has wide application prospect in the field of flexible stretchable electronic devices.

The invention discloses an organic thin film transistor with a stretchable structure and a preparation method of the organic thin film transistor, and a semiconductor channel layer of the organic thin film transistor is of a monolithic integrated structure and is patterned into a preset two-dimensional microstructure through micro-nano processing. Through the structural design, when the device bears macroscopic stretching, strain is mainly dissipated through geometric deformation modes such as rigid body displacement, rotation or out-of-plane buckling of a solid area of the semiconductor, so that the maximum stretching strain of the material is far lower than the elastic limit of the material. According to the scheme, the electrical property of the material and the mechanical property of the device are successfully decoupled, and the device with excellent stretchability (gt; 100%) and high cycle stability is allowed to be constructed by adopting a high-performance but rigid semiconductor material. The process is simple, and an effective way is provided for low-cost manufacturing of high-performance stretchable electronic devices.

The application discloses a battery encapsulated by liquid metal and a preparation method. The battery comprises an encapsulation shell and an energy storage inner core wrapped in the encapsulation shell. Both the encapsulation shell and the energy storage inner core are flexible and stretchable. Liquid metal is filled into a gap between the encapsulation shell and the energy storage inner core to seal the energy storage inner core. An inner surface of the encapsulation shell is provided with a support array structure facing the energy storage inner core, and / or an outer surface of the energy storage inner core is provided with a support array structure facing the encapsulation shell. The energy storage device encapsulated by the liquid metal has good stability in a stretching process, and has great development potential as a power component of a stretchable electronic device.

Disclosed herein is a porous polymeric silver wire comprising a cross-linked polymeric matrix material and a plurality of silver flakes distributed throughout the polymeric matrix material. Wherein the cross-linked polymeric material is porous, and a portion of the plurality of silver flakes located on an outer surface of the cross-linked polymeric material or on a surface within the pores is at least partially exposed to an ambient environment. The invention also discloses a method for manufacturing the porous polymer silver wire, an electrode comprising the porous polymer silver wire, and an electrical impedance spectroscopy sensor comprising the porous polymer silver wire.

The invention discloses a flexible and stretchable wiring structure, and relates to the technical field of flexible and stretchable electronics. The wiring structure comprises a stretchable base material and a conductive circuit formed on the stretchable base material, the conductive circuit comprises a wiring part, an interconnection part and an external connection part, the wiring part, the interconnection part and the external connection part are sequentially connected, the external connection part is used for being connected with other conductive structures, the wiring part and the interconnection part are of stretchable structures, and the external connection part is of a tensile structure; the length of the contact surface of the interconnection part and the external connection part is not less than 1 / 3 of the perimeter of the first external connection part, and at least one inflection point exists; and the wiring part comprises a single wiring structure formed by mutually connecting at least two single S conductive circuits laid in parallel. According to the embodiment of the invention, the wiring part of the single wiring structure in which multiple lines are interwoven and connected in parallel is designed, and the stretchable interconnection part is additionally arranged between the wiring part and the external connection part, so that the length of the contact surface between the stretchable interconnection part and the tensile external connection part is increased, and meanwhile, the contact surface is designed to have at least one inflection point; the anti-tensile open circuit risk of the whole wiring part, the interconnection part and the external connection part can be effectively improved.

The invention discloses an electronic device and a display device. The electronic device comprises a stretchable electronic element layer, a decorative element layer, a transparent hard board layer and an upper hard board layer. The stretchable electronic component layer is provided with a stretchable area, a first non-stretchable area and a second non-stretchable area. The stretching area is located between the first non-stretching area and the second non-stretching area. The decorative element layer is disposed on the stretchable electronic element layer. The transparent hard board layer is embedded or embedded in the decorative element layer and overlaps the first non-stretchable area of the stretchable electronic element layer. The upper hard board layer is embedded or embedded in the decorative element layer and overlaps the second non-stretchable area of the stretchable electronic element layer.

The application discloses anisotropic conductive stretchable electronic solder as well as a preparation method and application thereof, the stretchable electronic solder comprises a polymer binder and silver nanosheets, and the mass ratio of the polymer binder to the silver nanosheets is (5-20):1; the polymer binder is obtained by heating reaction of bisphenol A diglycidyl ether, polyethylene glycol diglycidyl ether and furfurylamine at 40-60 DEG C, and then heating reaction of N,N'-(4,4'-methylene diphenyl) bismaleimide at 60-80 DEG C. The anisotropic conductive stretchable electronic solder provided by the application can effectively offset the stress concentration problem caused by the difference in physical and chemical properties of soft / hard substrates, and ensure that the electrical interface always maintains stable connection in the stretching deformation process, and successfully realizes the universal welding of flexible, stretchable and rigid materials and devices.

According to one embodiment, the present invention relates to a gyrified metal-elastomer composite and a method for manufacturing the same. In this embodiment of the invention, a gyrified metal-elastomer composite with nanoscale phases can be dynamically controlled and manufactured. The gyrified metal-elastomer composite simultaneously retains the electrical conductivity of the metal and the stretchability of the elastomer, making it suitable for use in stretchable electronic devices.

Devices and methods relating to stretchable electronics. A stretchable electronic film includes an insulating polymer and less than 1 wt % of a semiconducting polymer. Manufacturing a multi-layered, stretchable electronic device characterized by a single peel-off step for integrating the components of the device rather than a multi-peel synthesis of the device.

A stretchable electronic device includes a first reflective panel. The first reflective panel includes a first substrate having at least one first opening, a second substrate opposite to the first substrate, a first liquid crystal layer disposed between the first substrate and the second substrate, a first frame glue disposed between the first substrate and the second substrate and adjacent to the first liquid crystal layer, and a first material layer disposed in the at least one first opening. A material of the first material layer is different from a material of the first substrate.