Abstract:
Systems and methods include depositing one or more materials on a voltage switchable dielectric material. In certain aspects, a voltage switchable dielectric material is disposed on a conductive backplane. In some embodiments, a voltage switchable dielectric material includes regions having different characteristic voltages associated with deposition thereon. Some embodiments include masking, and may include the use of a removable contact mask. Certain embodiments include electrografting. Some embodiments include an intermediate layer disposed between two layers.
Abstract:
Devices capable of protecting electronic components during the occurrence of a disturbance event using printed circuit board manufacturing techniques. A three (3) layer structure is formed comprising a polymer-based formulation sandwiched between two electrode layers. The devices can be manufactured in panel form providing high quantities of devices which can be removed from the panel and applied directly to the component to be protected. Desired patterns can be formed on either one of the electrode layers by photo-etch techniques thereby providing a process that can be tailored to a large number of applications.
Abstract:
A first voltage variable material (“VVM”) includes an insulative binder, first conductive particles with a core and a shell held in the insulating binder and second conductive particles without a shell held in the insulating binder; a second VVM includes an insulating binder, first conductive particles with a core and a shell held in the insulating binder, second conductive particles without a shell held in the insulating binder, and semiconductive particles with a core and a shell held in the insulating binder; a third VVM includes only first conductive particles with a core and a shell held in the insulating binder.
Abstract:
A method comprises providing a voltage switchable dielectric material having a characteristic voltage, exposing the voltage switchable dielectric material to a source of ions associated with an electrically conductive material, and creating a voltage difference between the source and the voltage switchable dielectric material that is greater than the characteristic voltage. Electrical current is allowed to flow from the voltage switchable dielectric material, and the electrically conductive material is deposited on the voltage switchable dielectric material. A body comprises a voltage switchable dielectric material and a conductive material deposited on the voltage switchable dielectric material using an electrochemical process. In some cases, the conductive material is deposited using electroplating.
Abstract:
A packaged semiconductor device (200) with a substrate (220) having, sandwiched in an insulator (221), a flat sheet-like sieve member (240) made of a non-linear material switching from insulator to conductor mode at a preset voltage. Both member surfaces are free of indentations; the member is perforated by through-holes, which are grouped into a first set (241) and a second set (242). Metal traces (251) over one member surface are positioned across the first set through-holes (241); each trace is connected to a terminal on the substrate top and, through the hole, to a terminal on the substrate bottom. Analogous for metal traces (252) over the opposite member surface and second set through-holes (242). Traces (252) overlap with a portion of traces (252) to form the locations for the conductivity switches, creating local ultra-low resistance bypasses to ground for discharging overstress events.
Abstract:
A method is provided for fabricating current-carrying formation on substrates. The method includes providing a substrate including a layer of a voltage switchable dielectric material, forming a mask over the layer of the voltage switchable dielectric material, and forming an electrically conductive layer. The mask includes gaps and the electrically conductive layer is formed in the gaps. The voltage switchable dielectric material has a characteristic voltage and the electrically conductive layer is formed by applying a voltage in excess of the characteristic voltage to the substrate and depositing the electrically conductive material through an electrochemical process such as electroplating.
Abstract:
One or more embodiments provide for a composition that includes (i) organic material that is conductive or semi-conductive, and (ii) conductor and/or semiconductor particles other than the organic material. The organic material and the conductor and/or semiconductor particles are combined to provide the composition with a characteristic of being (i) dielectric in absence of a voltage that exceeds a characteristic voltage level, and (ii) conductive with application of the voltage exceeding the characteristic voltage level.
Abstract:
An electrostatic discharge control system and circuit uses a voltage variable material to protect an electrical circuit, such as radio frequency identification (RFID) tag, from electrostatic damage, The circuit includes two separate electrical circuit traces with a gap between the traces. The circuit includes and protects an electrical device, such as an integrated circuit, connected between the traces. The circuit includes a voltage variable material disposed adjacent to the gap and configured to directly electrically couple the first circuit trace to the second circuit trace upon occurrence of an electrostatic discharge event. The voltage variable material may be anisotropic.