30 results about "Printed electronics" patented technology

A graphene-based composition is disclosed comprising functionalized graphene powder produced by detonation, plasma synthesis, liquid phase exfoliation, mechanical exfoliation among other graphene production methods known in the art. The graphene powder includes oxygen-containing functional groups such as hydroxyl, epoxy, carbonyl, and carboxyl, with a carbon-to-oxygen atomic ratio ranging from approximately 1.0 to 99.0. The powder is dispersed in an organic solvent, non-organic solvent, aqueous medium, surfactant, or POSS-based medium at a solids concentration between about 2% w / v and 30% w / v. Methods of functionalizing the graphene powder and forming dispersions are provided, along with methods of making ink dispersions with polymer binders and printed or coated articles formed therefrom. The graphene formulations exhibit tunable surface chemistry, controlled defect structures as measured by Raman spectroscopy, and stable dispersion properties suitable for applications in printed electronics, conductive coatings, sensing platforms, and lightweight composites.

The application discloses an ink viscosity determination method and device and a printer. In the method, the discovery that the ink viscosity can significantly affect the structural vibration characteristics of a piezoelectric nozzle is utilized, a structural vibration fluctuation signal used for representing the structural vibration characteristics of the piezoelectric nozzle is utilized, the ink viscosity in the piezoelectric nozzle is determined, the self-sensing measurement of the piezoelectric nozzle on the internal ink viscosity is realized, a feasible way is provided for the closed-loop feedback regulation of the jet performance and the precise control of the ink viscosity, and the reliability of the piezoelectric inkjet printing technology in emerging applications such as printed electronics and sensors can be promoted. The method comprises the following steps: detecting a structural vibration fluctuation signal of a piezoelectric nozzle, wherein the structural vibration fluctuation signal is used for representing the structural vibration characteristics of the piezoelectric nozzle; and determining the ink viscosity in the piezoelectric nozzle according to the structural vibration fluctuation signal.

The utility model belongs to the technical field of printing electronics, and particularly relates to a flexible electrifiable light-emitting structure which comprises a light-emitting structure body. The light-emitting structure body comprises a base material layer, a pattern layer printed on the top of the base material layer in a silk-screen mode, a light-emitting layer printed on the top of the pattern layer in a silk-screen mode, insulation protection glue packaged on the top of the light-emitting layer and an outer protection layer packaged on the top of the insulation protection glue, and a flexible flat cable is arranged at the end of the pattern layer. According to the utility model, screen printing one-step forming is adopted, the processing is convenient, the processing cost and the part cost are relatively low, and the safety and the service life of the light-emitting structure main body are further improved and prolonged through the packaged insulation protection glue and the outer protection layer.

The invention discloses a preparation method of small-size monodisperse silver nanoparticles, and belongs to the technical field of nano materials. According to the method, silver salt serves as a precursor, step-by-step temperature control reaction is carried out in a coexistence system of an alkaline reducing agent and a polyanionic steric hindrance stabilizer, and small-size monodisperse growth of silver nanoparticles is achieved. According to the step-by-step temperature control strategy, the Ostwald ripening and agglomeration growth of the particles are effectively inhibited by accurately regulating and controlling nucleation and growth kinetics and based on an electric double layer-steric hindrance synergistic stabilization mechanism, so that the small size and monodispersity of the silver nanoparticles are synchronously realized. The average particle size of the obtained silver nanoparticles is as low as 9 nm, the particle size distribution range is narrow, and the particles are monodisperse. The prepared silver nanoparticles are suitable for high-performance conductive ink and have wide application prospects in the field of flexible printing electronics.

A convertible car lighting assembly includes the soft top of a convertible car. The soft top is configured to switch between a closed and an open position relative to the body of the convertible car. Printed electronics are applied to the soft top. A lighting device is mounted on the soft top. The lighting device is powered by electrical energy supplied to it by the printed electronics.

The present application relates to liquid metal composite film, and in particular to a preparation method of liquid metal nanodroplet spontaneous sintering composite film and application thereof. In the dispersion liquid, the liquid metal micro-nano droplet is spontaneously sintered in the evaporation process by using the conductive two-dimensional material Mxene, and a liquid metal composite film is formed. The liquid metal / MXene composite film obtained by the present application has a continuous self-oscillation function under a humidity gradient. The continuous self-oscillation function can be used to cut the magnetic induction lines in the magnetic field to generate an induced current. The liquid metal / MXene composite dispersion liquid prepared by the method can be used as conductive 'ink', and can induce the spontaneous sintering of liquid metal micro-nano droplets during the solvent evaporation process. Meanwhile, the liquid metal / MXene composite dispersion liquid can be used to prepare conductive self-oscillation power generation devices. The method has wide application prospects in the fields of printed electronics technology, sensors, flexible actuation, self-powered devices and environmental micro-energy collection.

A convertible vehicle lighting assembly includes a top of a convertible vehicle. The top is configured to be transitioned between a closed position and an open position relative to a body of the convertible vehicle. Printed electronics are applied to the top. A lighting device is mounted to the top. The lighting device is powered by electrical energy that is transferred to the lighting device through the printed electronics.

The present application belongs to the field of printed electronics, and discloses a cold light sheet structure and a cold light sheet structure manufacturing method. The cold light sheet structure comprises an upper layer and a lower layer. The upper layer comprises an upper substrate and an upper electrode layer arranged on the upper substrate. The upper electrode layer is made of light-transmitting conductive material. The lower layer comprises a lower substrate, a lower electrode layer and a light-emitting layer. The lower electrode layer is arranged on the lower substrate. The lower electrode layer comprises a plurality of first electrodes and a plurality of second electrodes arranged alternately and at intervals. The light-emitting layer is arranged on the lower electrode layer. The upper layer and the lower layer are independent or connected by adhesive. The cold light sheet structure can reduce the cost of changing the light-emitting shape of the cold light sheet and improve the stability of the light-emitting of the cold light sheet. The cold light sheet structure manufacturing method processes the upper layer and the lower layer separately, and the first electrodes and the second electrodes are arranged in the lower layer of the light-emitting layer at the same time, thereby reducing the cost of changing the light-emitting shape of the cold light sheet, and eliminating the step of arranging the dielectric layer, thereby ensuring the stability of the light-emitting of the cold light sheet.

An aircraft cabin component for use in an aircraft cabin of an aircraft includes a component having at least one parameterized surface. A flexible OLED display assembly is adhered to the at least one parameterized surface of the component and closely conforms to the curvature of the at least one parameterized surface. The flexible OLED display assembly includes a printed electronics layer and an array of OLEDs deposited on the printed electronics layer.

The invention provides an electronics arrangement (2000) comprising a support board (200), an electrically conductive printed track (80), an extended printed region (70), an electronic element (90), and a thermally conductive layer (400), wherein: the support board (200) is configured to support the electrically conductive printed track (80), the extended printed region (70), and the electronic element (90); wherein the electrically conductive printed track (80) is configured on the support board (200); wherein the electrically conductive printed track (80) comprises an electrically conductive printed track material (81); wherein the electronic element (90) is configured in electrical contact with the electrically conductive printed track (80); wherein the electronic element (90) comprises a cross-sectional area AE, defined parallel to the support board (200); wherein the extended printed region (70) is configured on the support board (200); wherein the extended printed region (70) comprises an extended printed region material (71); wherein the extended printed region (70) comprises a cross-sectional area AT defined parallel to the support board (200); and wherein the thermally conductive layer (400) is at least partly configured on at least part of the extended printed region (70); wherein the thermally conductive layer (400) comprises a thermally conductive layer material (410) wherein the thermally conductive layer (400) is in thermal contact with the electronic element (90), wherein the thermally conductive layer (400) comprises a cross-sectional area As defined parallel to the support board (200), wherein As / AT ≤1.1, and wherein 1.5≤AS / AE≤30.

The invention belongs to the technical field of printing electronics, and relates to conductive copper paste and a laser sintering process thereof. The conductive copper paste contains micron-sized copper powder, a copper ligand and a solvent, the copper ligand is formed by coordination of anhydrous copper formate and an amino ligand; and the amino ligand is more than one of hexylamine, 2-ethyl hexylamine, butylamine, beta-alanine, glycine, 2-amino-2-methyl-1-propanol, octylamine and oleylamine. The laser sintering process comprises the following steps: printing conductive copper paste on the surface of a substrate, sintering by adopting a picosecond or femtosecond pulse laser system in the atmosphere of air, nitrogen, inert gas or reducing gas, and performing multi-path scanning on the surface of a sample by controlling a laser scanning program through software in the sintering process. The problems that in the prior art, atmosphere control equipment needs to be additionally arranged, the production cost is increased, and the process openness and large-scale continuous production are limited by the closed atmosphere are solved.

This invention provides a liquid metallic ink, its preparation method, and its applications. The liquid metallic ink of this invention comprises liquid metallic ink particles, a co-solvent, and water. The liquid metallic ink particles include EGaIn droplets, and the surface of the EGaIn droplets is coated with a polymer, which is a conjugated conductive polymer formed from poly(3,4-ethylenedioxythiophene) and poly(styrene sulfonate). Compared with traditional conductive inks, the liquid metallic ink of this invention offers higher stability, ease of processing, and better mechanical robustness. The ink printed on this inkjet printer maintains its linear shape without breaking even when the PVA substrate is deformed, showing promise for revolutionizing the printed electronics field. This invention also provides a preparation method and applications for the liquid metallic ink.

A high-precision circuit additive manufacturing method based on aerosol printing relates to the fields of intelligent manufacturing, additive manufacturing, printed electronics or inkjet printing technology. It is used to solve the problem that existing inkjet printing technology is difficult to obtain printed graphics with a specific resolution. The present invention provides accurate parameter input for CFD simulation by using a mass-weighted method to statistically calculate the aerosol particle size, thereby greatly improving the simulation accuracy. The process window of aerosol printing is determined low-cost, efficiently and accurately through CFD simulation, and printed graphics with a specific resolution are quickly obtained through a printing speed iteration method. The method proposed in the present invention is suitable for aerosol inks of various materials, supports precision additive manufacturing of graphics with a resolution within 10-300μm, and the average graphic accuracy error after five iterations is less than 2.2%.

The invention provides a convertible vehicle lighting assembly and a lighting method. A convertible vehicle lighting assembly includes a roof of a convertible vehicle. The roof is configured to transition between a closed position and an open position relative to a body of the convertible vehicle. Printed electronics are applied to the top. A lighting device is mounted to the top. The lighting device is powered by electrical energy transferred to the lighting device through the printed electronics.

This invention provides a high-adhesion-strength copper paste, its preparation method, and its applications. By weight, the high-adhesion-strength copper paste comprises 80-92 parts of micro / nano copper powder and 8-20 parts of an organic carrier, which includes a mixed epoxy resin, a mixed curing agent, a diluent, a filler, and a coupling agent. This invention combines dual-reactive-site epoxy resin, multi-reactive-site epoxy resin, and silicone-modified epoxy resin, and further utilizes mixed curing agents with different activities to achieve enhanced and toughened effects. This results in copper paste products with excellent adhesion and aging resistance, enabling uniform dispersion of copper particles in the paste. Even after freezing and standing, it maintains stable performance without phase separation during long-term storage. The significant improvement in adhesion strength (i.e., shear strength) during curing further enhances the reliability and durability of the product, making it suitable for most printed electronics fields. It can replace existing silver pastes to reduce costs and increase efficiency in industry production.

The application provides a three-dimensional microstructure forming method based on aerosol jet printing, which is used for realizing controllable precision printing of three-dimensional microstructure. The application relates to the technical fields of intelligent manufacturing, additive manufacturing, printed electronics or inkjet printing. The forming method comprises the following steps: determining the solid content phi1 of aerosol ink; determining printing process parameters according to the type of the ink, and determining the solid content of aerosol flow, the deposition efficiency rho1 and the deposition rate rho2 of the aerosol ink according to the aerosol flow deposition rate measuring device and the solid content phi1 of the aerosol ink under the determined printing process parameters; determining the minimum amount of ink required for printing the three-dimensional microstructure and the printing time according to the deposition efficiency rho1 and the deposition rate rho2 of the aerosol ink; and manufacturing the three-dimensional microstructure by using the layer-by-layer manufacturing method according to the minimum amount of ink and the printing time. The application expands the application of aerosol jet printing in the field of three-dimensional microstructure forming.

The invention belongs to the technical field of conductive silver paste, and relates to high-conductivity silver paste suitable for the fields of printed electronics, flexible circuits, photovoltaic electrodes and the like, in particular to medium-temperature curing conductive silver paste and a preparation method and application thereof. Different resins and solvent ratios are selected, the problems that existing medium-temperature curing silver paste is poor in conductivity and adhesive force are solved, the bonding conditions of the prepared conductive silver paste and a PET film are different due to the fact that the polarities and the conjugated group contents in different resins are different, and the conductivity of the conductive silver paste is improved by adjusting the proportion of silver powder. Finally, the conductive silver paste prepared from the acrylic resin is good in adhesiveness and conductivity, due to the fact that polar groups contained in the acrylic resin are fewer than those contained in other resins, molecular chains of the acrylic resin are linear chains, the distance of silver powder particles is reduced after curing, the prepared conductive silver paste is low in resistivity, and the volume resistivity of the conductive silver paste reaches 7.35 * 10 <-5 > omega.cm.

A body sensing unit having a pad part which adheres to the skin and a lead or tail part which electrically connects to the pad part. The lead or tail part is formed by a flat substrate, for example carrying printed electronics, and which has a novel shape which forms a coil or loop, or part thereof, around at least part of the pad part. The novel shape changes the distribution of stress if the tail is displaced, e.g. pulled or tugged, during use, lessening the chance that the pad part becomes detached from the skin.

The invention relates to a catheter and a method of manufacturing a catheter based on printed electronics and a printed electronics process. The catheter includes a steerable sheath including an anchor ring and a stay wire connected to the anchor ring, a printed trace printed on the steerable sheath using a printing electronic process, and a printed assembly printed on the steerable sheath using a printing electronic process and connected to the steerable sheath and the printed trace.

This invention belongs to the field of printed electronics technology and relates to a conductive copper paste and its laser sintering process. The conductive copper paste contains micron-sized copper powder, copper ligands, and a solvent; the copper ligands are formed by the coordination of anhydrous copper formate with amino ligands; the amino ligands are one or more selected from hexylamine, 2-ethylhexylamine, butylamine, β-alanine, glycine, 2-amino-2-methyl-1-propanol, octylamine, and oleylamine. The laser sintering process involves printing the conductive copper paste onto the surface of a substrate, then sintering it using a picosecond or femtosecond pulsed laser system under an atmosphere of air, nitrogen, inert gas, or reducing gas. During sintering, the laser scanning program is controlled by software to perform multi-path scanning of the sample surface. This invention solves the problems of existing technologies that require additional atmosphere control equipment, increase production costs, and that a closed atmosphere limits process openness and large-scale continuous production.

The invention discloses an efficient and simple silver nanoparticle synthesis method based on a chemical reduction method, which comprises the following steps: (1) uniformly mixing an aqueous solution of soluble silver salt and an aqueous solution of a complexing agent to obtain a silver ion complex aqueous solution; (2) adding hydroxy carboxylate into the silver ion complex aqueous solution obtained in the step (1); (3) adjusting the pH value of the solution obtained in the step (2) to be alkaline, and reacting for 10-60 minutes at low temperature; (4) adjusting the pH value of the solution obtained in the step (3) to be neutral, heating to a high temperature, and reacting for 10-30 minutes; and (5) naturally cooling the material obtained in the step (4) to room temperature, and sequentially centrifuging, washing with deionized water, washing with ethanol and drying to obtain the silver nanoparticles. The prepared silver nanoparticles are excellent in performance in conductive ink, and the resistivity of a sintered coating is only 2-50 times that of bulk silver. The characteristic shows that the material has important application potential in the field of printed electronics and can be used for preparing high-performance flexible circuits and conductive coatings.

The application discloses a preparation method of a temperature interference resistant composite conductive ink and belongs to the field of functional composite materials and printed electronics technology. The method comprises acidizing pretreatment of carbon nanotubes, mixing Ti3C2, CNT and CMC according to a specific ratio and ultrasonic dispersion. By regulating the content of Ti3C2 and CNT, the opposite temperature response characteristics of the two are utilized to realize resistance change offset, so that the conductivity change rate of the solidified film is not more than 7.5% within 20 DEG C to 100 DEG C. The application is suitable for flexible sensors and electronic devices with high temperature stability requirements.

The application relates to a preparation method and application of a flexible wearable wireless data glove. The application belongs to the field of printed electronics. The purpose of the application is to solve the technical problems that current wireless data gloves are not light and not fit. The method of the application is as follows: three kinds of liquid metal inks with different polymer dispersant contents are configured; the three kinds of liquid metal inks are respectively printed on a flexible substrate, and then pulse light sintering is carried out, so as to respectively obtain a bending sensor, a pressure sensor and a transmission circuit; after assembly, a flexible material is used for packaging. The application adopts the liquid metal inks with different polymer dispersant contents to be printed and then subjected to light sintering, so as to be respectively used as a circuit, a bending sensor and a pressure sensor. The prepared glove can distinguish the sensor categories by acquiring basic resistance, then calculate the resistance change rate based on the principle of the resistance type sensor, and then fit the actual situation to obtain desired data or complete the simulation of actions in VR.

The present invention relates to electrically conductive silver ink composition providing excellent conductivity. The ink composition is screen printable and suitable for use in printed electronics applications.

The present application relates to the field of printed electronics, and particularly relates to a continuous laser-based printed OLED defect detection and compensation system and method, comprising a main control module, a main moving module, a secondary moving module, a timing processing module, a piezoelectric control module, an ink supply module, an RGB main piezoelectric nozzle, an RGB compensation nozzle, a laser emitter, a photoelectric receiver and an OLED pixel substrate. Through the ink droplet backlight shielding effect of continuous laser and the pulse high-low level sequence formed by photoelectric conversion, the number and state of ink droplet ejection are recorded at high speed. Through the standard comparison counter and multiple pulse quantity counters in the timing processing module, the precise sequencing and positioning of broken ink droplets are realized. Through the unique coordinate information of the pixels on the OLED pixel substrate, the sequence binding of the defective pixels and the broken ink droplets is realized. Through the secondary moving module and the RGB compensation nozzle, the compensation process of the defective pixels is completed. The main printing process and the defect detection and compensation process are carried out simultaneously, which greatly improves the preparation efficiency of printed OLED.

A graphene-based composition is disclosed comprising functionalized graphene powder produced by detonation, plasma synthesis, liquid phase exfoliation, mechanical exfoliation among other graphene production methods known in the art. The graphene powder includes oxygen-containing functional groups such as hydroxyl, epoxy, carbonyl, and carboxyl, with a carbon-to-oxygen atomic ratio ranging from approximately 1.0 to 99.0. The powder is dispersed in an organic solvent, non-organic solvent, aqueous medium, surfactant, or POSS-based medium at a solids concentration between about 2% w / v and 30% w / v. Methods of functionalizing the graphene powder and forming dispersions are provided, along with methods of making ink dispersions with polymer binders and printed or coated articles formed therefrom. The graphene formulations exhibit tunable surface chemistry, controlled defect structures as measured by Raman spectroscopy, and stable dispersion properties suitable for applications in printed electronics, conductive coatings, sensing platforms, and lightweight composites.

This invention belongs to the field of printed electronics technology, and relates to a high-performance water-based carbon-based conductive ink, its preparation method, and its application. The raw materials for the high-performance water-based carbon-based conductive ink include: 10-30 parts of conductive filler, 18-30 parts of binder, 32-69 parts of solvent, and 3-8 parts of additives, wherein the conductive filler is composed of graphite and carbon black. Through a simple dispersion and ball milling process, an effective three-dimensional structure of "carbon black-few-carbon black" is constructed, resulting in an ink with low cost, high stability, high conductivity, excellent mechanical flexibility, and environmental friendliness, showing great potential in the field of flexible electronics.

The application discloses a wireless flexible ethylene sensing detection device and method based on MXene printed electronic devices. The sensor includes a flexible substrate, a printed MXene interdigital electrode, a printed MXene radio frequency antenna, and an ethylene sensing modification layer. The printed MXene interdigital electrode and the printed MXene radio frequency antenna are formed by one-time printing of additive-free MXene ink through a silk screen, and the radio frequency antenna and the interdigital electrode contained therein form a radio frequency resonance network with the sensing modification layer. The technology can respond to the ethylene concentration in the environment in real time and produce corresponding resonance parameter changes, and the wireless reading is realized through the mutual inductance principle. The method provides a new technical platform for wireless passive plant ethylene detection, and also provides an in-situ, real-time, simple and rapid sensing detection device for the application of plant wearable sensors in precision agriculture and food preservation.

The invention discloses conductive silver paste containing photosensitive active aluminoborate glass, and belongs to the technical field of electronic materials. The photosensitive active aluminoborate glass comprises the following chemical components in percentage by oxide mole: 45%-65% of B2O3, 5%-30% of Al2O3, 1%-25% of PbO, 1%-10% of Bi2O3 and specific types of transition metal oxides. The glass has excellent absorption capability on laser with the wavelength of 808-1064nm, and can efficiently convert light energy into heat energy. The conductive silver paste is prepared by taking the powder of the glass as a key functional phase and matching with silver powder, an organic carrier and optional additives. The conductive silver paste disclosed by the invention is matched with a laser-assisted sintering process, local, rapid and low-temperature sintering of an electrode can be realized, and the formed electrode is dense, low in sheet resistance and strong in adhesive force, and is particularly suitable for the fields of printed electronics, photovoltaic cell metallization contact and the like.

The invention relates to a flexible insole integrated with a moisture power generation-energy storage unit, and belongs to the technical field of intelligent wearable equipment. The insole is of a multi-layer bionic structure and comprises a surface layer, an upper layer, a lower layer and an upper layer from top to bottom, and the surface layer has the directional moisture permeable characteristic and allows water to pass through unidirectionally from top to bottom and blocks outside dirt; a moisture power generation-energy storage integrated device and a system control PCB are embedded in the integrated functional layer, and the integrated functional layer is used for capturing sweat and moisture and converting and storing the sweat and moisture into electric energy; the flexible circuit layer is used for preparing a flexible circuit by adopting a printing electronic technology, is connected with the physiological signal sensor and is powered by the functional layer to collect human body data; and the packaging bottom layer has packaging protection and moisture management functions, and the surface of the packaging bottom layer is provided with a micro evaporation hole array which can be opened and closed according to needs, so that controllable rapid drainage and evaporation are realized. Through the multi-functional hierarchical collaborative design, energy self-supply, intelligent sensing and bionic perspiration are integrated, and the core problems of energy supply, comfort and function integration of the flexible insole in a real wearing environment are solved.