800results about "Thermoplastic polymer dielectrics" patented technology

One or more light emitting diode diodes (LEDs) are attached to a printed circuit board. The attached LEDs are connectable with a power source via circuitry of the printed circuit board. An overmolding material is insert molded an over at least portions of the printed circuit board proximate to the LEDs to form a free standing high thermal conductivity material overmolding that covers at least portions of the printed circuit board proximate to the LEDs. The free standing high thermal conductivity material has a melting temperature greater than about 100° C. and has a thermal conductivity greater than or about 1 W/m·K. In some embodiments, the free standing high thermal conductivity material is a thermoplastic material.

The present invention provides systems and methods for embedding a filament or filament mesh in a three-dimensional structure, structural component, or structural electronic, electromagnetic or electromechanical component/device by providing at least a first layer of a substrate material, and embedding at least a portion of a filament or filament mesh within the first layer of the substrate material such the portion of the filament or filament mesh is substantially flush with a top surface of the first layer and a substrate material in a flowable state is displaced by the portion of the filament and does not substantially protrude above the top surface of the first layer, allowing the continuation of an additive manufacturing process above the embedded filament or filament mesh. A method is provided for creating interlayer mechanical or electrical attachments or connections using filaments within a three-dimensional structure, structural component, or structural electronic, electromagnetic or electromechanical component/device.

High dielectric constant thermoplastic compositions that are capable of being used in a laser direct structuring process. The compositions include a thermoplastic base resin, a laser direct structuring additive, and at least one ceramic filler. The compositions provide a high dielectric constant, low loss tangent thermoplastic composition. The compositions can be used in a variety of applications such as personal computers, notebook and portable computers, cell phone antennas and other such communications equipment, medical applications, RFID applications, and automotive applications.

A manufacture method and structure of a curved capacitive touch panel is disclosed. A flat flexible printed circuit board (FPCB) with capacitive touch sensing/detecting capability is provided, followed by subjecting the flat FPCB to compressing molding to form a curved FPCB. Subsequently, a curved substrate is provided, wherein an outer curved surface of the curved FPCB is bonded to an inner curved surface of the substrate, thereby forming the curved capacitive touch panel.

An anisotropic conductive adhesive contains conductive particles dispersed in a resin composition, wherein the resin composition includes a radical polymerization resin (A), an organic peroxide (B), a thermoplastic elastomer (C) and a phosphoric ester (D). The resin composition can further contain an epoxy silane coupling agent (E) represented by formula (2) or (3). The resin composition is mixed with other components after the radical polymerization resin (A), the thermoplastic elastomer (C), the phosphoric ester (D) and the epoxy silane coupling agent (E) are reacted. It is also possible to preliminarily react only the phosphoric ester (D) and the epoxy silane coupling agent (E) and to react the product of the preliminary reaction with the radical polymerization resin (A) and the thermoplastic elastomer (C), and then to add other components. The anisotropic conductive adhesive of the present invention can be used for electrical joining of electronic or electric parts of electrical apparatus.

The invention is based on use of a heat-activated adhesive for manufacturing of intelligent devices comprising printed conductive electronics on a flexible substrate, where the adhesive is an anisotropic electrically conductive adhesive and is applied to the substrate as a thin film which can be used for electrical connections and for providing mechanical stability to the printed conductive electronics.

A new interconnection scheme is disclosed for a tape automated bonding (TAB) package, a flip chip package and an active matrix liquid crystal display (AMLCD) panel, where an electrically conducting adhesive is used to form an electrical interconnection between an active electronic device and its components. The electrically conducting adhesive can be a mixture comprising a polymer resin, a no-clean solder flux, a plurality of electrically conducting particles with an electrically conducting fusible coating which provides a metallurgical bond between the conducting particles as well as to the substrates. The advantages of using the electrically conducting adhesives include reduction in bonding pressure and/or bonding temperature, control of interfacial reactions, promotion of stable metallurgical bonds, enhanced reliability of the joints, and others.

The present invention comprises methods for making three-dimensional (3-D) liquid crystalline polymer (LCP) interconnect structures using a high temperature singe sided liquid crystalline polymer, and low temperature single sided liquid crystalline polymer, whereas both the high temperature LCP and the low temperature LCP are drilled using a laser or mechanical drill or mechanically punch to form a z-axis connection. The single sided Conductive layer is used as a bus layer to form z axis conductive stud conductive stud within the high temperature and low temperature LCP, followed by deposition of a metallic capping layer of the stud that serves as the bonding metal between the conductive interconnects to form the z-axis electrical connection. High temperature and low temperature LCP circuit layers are etched or built up to form circuit patterns and subsequently bonded together to form final 3-D multilayer circuit pattern whereas the low temperature LCP melts to form both dielectric to dielectric bond to high temperature LCP circuit layer, and dielectric to conductive bond, whereas, metal to metal bonding occurs with high temperature metal capping layer bonding to conductive metal layer. The resultant structure is then packaged using two metallized organic cores that are laminated onto either side of the device using a low temperature adhesive with similar electrical properties and subsequently metallized to form the input output terminals and EM shielding.

A flexible circuit electrode array with more than one layer of metal traces comprising: a polymer base layer; more than one layer of metal traces, separated by polymer layers, deposited on said polymer base layer, including electrodes suitable to stimulate neural tissue; and a polymer top layer deposited on said polymer base layer and said metal traces. Polymer materials are useful as electrode array bodies for neural stimulation. They are particularly useful for retinal stimulation to create artificial vision, cochlear stimulation to create artificial hearing, or cortical stimulation many purposes. The pressure applied against the retina, or other neural tissue, by an electrode array is critical. Too little pressure causes increased electrical resistance, along with electric field dispersion. Too much pressure may block blood flow.

The present invention has for its object to provide a multilayer printed circuit board which is very satisfactory in facture toughness, dielectric constant, adhesion and processability, among other characteristics. The present invention is directed to a multilayer printed circuit board comprising a substrate board, a resin insulating layer formed on said board and a conductor circuit constructed on said resin insulating layer, wherein said resin insulating layer comprises a polyolefin resin.

A resin composition which is low in a roughness of an insulating layer surface and capable of forming thereon a plated conductor layer having a sufficient peel strength in a wet roughing step and which is excellent in dielectric characteristics and a coefficient of thermal expansion, is disclosed. The resin composition contains a cyanate ester resin and a specified epoxy resin.

The present invention provides systems and methods for creating interlayer mechanical or electrical attachments or connections using filaments within a three-dimensional structure, structural component, or structural electronic, electromagnetic or electromechanical component/device.

In order to provide a film having excellent heat resistance, thermal dimensional stability, and mechanical properties, in particular, a film capable of satisfying required properties, e.g., higher strength in accordance with the reduction in thickness of a base film, improved thermal dimensional stability and mechanical properties in a use environment, and higher heat resistance and improved thermal dimensional stability in accordance with the needs for miniaturization and more functionality in electrical and electronic areas, a thermoplastic resin is allowed to contain transition metal oxide particles, and is formed into a biaxially oriented thermoplastic resin film, wherein the melting point of the film is allowed to become higher than the melting point of the thermoplastic resin to be used. Preferably, the difference between a peak temperature (melting point T₁) of the heat of fusion in the first run of the measurement of the biaxially oriented thermoplastic resin film with a differential scanning calorimeter (DSC) and a peak temperature (melting point T₂) of the heat of fusion in the second run is allowed to satisfy the following Formula.

2° C.≦T₁−T₂≦30°C.

Alternatively, the plane orientation factor of the biaxially oriented thermoplastic resin film containing the transition metal oxide particles is controlled at 0.120 or more and less than 0.280.

A resin composition, substrate material, sheet, laminated board, resin-bearing copper foil, copper-clad laminate, TAB tape, printed board, prepreg and adhesive sheet are provided which exhibit improved mechanical properties, dimensional stability, heat resistance and flame retardance, particularly high-temperature physical properties.

A resin composition containing 100 parts by weight of a thermosetting resin and 0.1-65 parts by weight of an inorganic compound, the resin composition having a mean linear expansion coefficient (α2) of up to 17×10⁻³ [° C.⁻¹] over the temperature range from a temperature 10° C. higher than a glass transition temperature of the resin composition to a temperature 50° C. higher than the glass transition temperature of the resin composition.

An assembly having a surface mounted electronic device mounted onto a printed circuit board and a thermoplastic adhesive applied to the surface mounted electronic device facing the printed circuit board and providing for a gap between the thermoplastic adhesive and the printed circuit board. The assembly is heated at solder reflow temperatures to at least soften the thermoplastic adhesive sufficiently to flow across the gap and provide a thermoplastic adhesive joint between the surface mounted electronic device and the printed circuit board.

A flexible printed circuit board having at least a set of strip line transmission path by being provided with a signal line, and a pair of ground layers and, includes a pleated part PL having a plurality of curved portions which are curved so as to be opened or closed, in which in the ground layers, mesh ground layers in which conductive portions are provided in a mesh shape, and solid ground layers in which the conductive portions are provided in a planar state, are provided, in which the mesh ground layers are arranged on an outer peripheral side of the curved portions PL2, and the solid ground layers are arranged on an inner peripheral side of the curved portions.