摘要:
Embodiments described include a non-polymeric voltage switchable dielectric (VSD) material comprising substantially of a grain structure formed from only a single compound, processes for making same, and applications for using such non-polymeric VSD materials.
摘要:
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.
摘要:
A composition of voltage switchable dielectric (VSD) material that comprises a concentration of core shelled particles that individually comprise a conductor core and a shell, the shell of each core shelled particle being (i) multilayered, and/or (ii) heterogeneous.
摘要:
A substrate device includes an embedded layer of VSD material (230) that overlays a conductive element or layer (240) to provide a ground. An electrode (210), connected to circuit elements that are to be protected, extends into the thickness of the substrate to make contact with the VSD layer. When the circuit elements are operated under normal voltages, the VSD layer is dielectric and not connected to ground. When a transient electrical event occurs on the circuit elements, the VSD layer switches instantly to a conductive state, so that the first electrode is connected to ground.
摘要:
Formulations for voltage switchable dielectric materials include two or more different types of semiconductive materials uniformly dispersed within a dielectric matrix material. The semiconductive materials are selected to have different bandgap energies in order to provide the voltage switchable dielectric material with a stepped voltage response. The semiconductive materials can comprise inorganic particles, organic particles, or an organic material that is soluble in, or miscible with, the dielectric matrix material. Formulations optionally can also include electrically conductive materials. At least one of the conductive or semiconductive materials in a formulation can comprise particles characterized by an aspect ratio of at least 3 or greater.
摘要:
A wireless communication device, such as an RFID tag, is provided material that is dielectric, unless a voltage is applied that exceeds the materials characteristic voltage level. In the presence of such voltage, the material becomes conductive. The integration of such material into the device may be mechanical and/or electrical.
摘要:
A composition of voltage switchable dielectric (VSD) material that comprises a concentration of core shelled particles that individually comprise a conductor core and a conductor shell, so as to form a conductor-on- conductor core shell particle constituent for the VSD material.
摘要:
Various disclosed aspects provide for protecting components (e.g., integrated circuits) from spurious electrical overvoltage events, such as electrostatic discharge. Embedded components with voltage switchable dielectric materials may protect circuits against electrostatic discharge.
摘要:
Various aspects provide for structures and devices to protect against spurious electrical events (e.g., electrostatic discharge). Some embodiments incorporate a voltage switchable dielectric material (VSDM) bridging a gap between two conductive pads. Normally insulating, the VSDM may conduct current from one pad to the other during a spurious electrical event (e.g,. shunting current to ground). Some aspects include gaps having a gap width that is greater than 50% of a spacing between electrical leads connected to the pads. Some devices include single layers of VSDM. Some devices include multiple layers of VSDM. Various devices may be designed to increase a ratio of active volume (of VSDM) to inactive volume.
摘要:
A composition of voltage switchable dielectric (VSD) material that comprises a concentration of core shelled particles that individually comprise a conductor core and a shell, the shell of each core shelled particle being (i) multilayered, and/or (ii) heterogeneous. As depicted, VSD material 100 includes matrix binder 105 and various types of particle constituents, dispersed in the binder in various concentrations. The particle constituents of the VSD material may include a combination of conductive particles 110, semiconductor particles 120, nano-dimensioned particles 130 and/or core shelled particles 140. In some implementations, the core shelled particles may substitute for some or all of the conductive particles. As an alternative or variation, the VSD composition may omit the use of conductive particles, semiconductive particles, or nano-dimensioned particles, particularly with the presence of a concentration of core shelled particles. Thus, the type of particle constituent that are included in the VSD composition may vary, depending on the desired electrical and physical characteristics of the VSD material. For example, some VSD compositions may include conductive particles, but not semiconductive particles and/or nano-dimensioned particles (like carbon nanotube). Still further, other embodiments may omit use of conductive particles.