Abstract:
An implantable medical device including a plurality of components on a substrate, and a biocompatible multi-layer coating applied by vapor deposition to conform to and sealingly cover at least a portion of the components and/or the substrate. The coating is applied in at least two sets, each set having first, second and third layers. At least one of the first, second and third layers consist essentially of a polymer such as parylene and at least one of the other two layers of the set consist essentially of inorganic material such that each layer differs in at least one diffusion barrier property from the other layers in the set and adds to an overall barrier effect of the coating.
Abstract:
An electrical assembly which comprises a substrate and a conformal coating deposited on at least one surface of the substrate by plasma polymerization of a compound of formula (I) and deposition of a resulting polymer of the compound of formula (I), and plasma polymerization of a fluorohydrocarbon and deposition of a resulting polymer of the fluorohydrocarbon, such that the resulting polymer of the compound of formula (I) and the resulting polymer of the fluorohydrocarbon create discrete layers of the conformal coating; wherein the compound of formula (I) is an organic compound.
Abstract:
An electrical device comprising an electronic component mounted to a surface of a printed circuit board, a ground connection on said surface, and electromagnetic interference (EMI) shielding. The EMI shielding includes an electrical insulator coating the electronic component, the insulator contacting the surface, and a conductive layer covering the electrical insulator, and contacting the electrical insulator and the ground connection.
Abstract:
A thermally conductive polymer composition is applied to mounted components to provide both thermal control and RF radiation attenuation. In order to improve the RF attenuation performance, a plurality of discrete conductive elements may be incorporated into the polymer composition, with the sizing, spacing and configuration of the suppressed most efficiently by the particular composition. The discrete conductive elements are significantly larger, on the order of 1-5 mils (approximately 25-127 μm) than the filler materials utilized to render the base polymer conductive. Also disclosed is an apparatus and a method for preparing and applying such a polymer composition to an electronic component.
Abstract:
A system and method of forming a patterned conformal structure for an electrical system is disclosed. The conformal structure includes a dielectric coating shaped to conform to a surface of an electrical system, with the dielectric coating having a plurality of openings therein positioned over contact pads on the surface of the electrical system. The conformal structure also includes a patterned conductive coating layered on the dielectric coating and on the contact pads such that an electrical connection is formed between the patterned conductive coating and the contact pads. The patterned conductive coating comprises at least one of an interconnect system, a shielding structure, and a thermal path.
Abstract:
A waterproof method for an electronic device and a waterproof electronic device are provided. The electronic device comprises a printed circuit board, which comprises a board, a plurality of electrical elements and a button device. The waterproof method comprises the following steps: applying a first non-solid adhesive to cover the button device directly, curing the first non-solid adhesive to form a first waterproof layer, applying a second non-solid adhesive to at least cover the electrical elements directly and curing the second non-solid adhesive to form a second waterproof layer. In the end, assembling the printed circuit board, sealed with the waterproof layers, into a case to form the waterproof electronic device.
Abstract:
An electrical device is provided. The electrical device comprises a circuit board and a waterproof layer. The waterproof layer substantially seals at least one portion of the circuit board to prevent the short circuit after water infiltrating. Thereby, this particular structure provides superior waterproof protection for the electrical device. This electrical device may be installed in a band structure which facilitates portability. Moreover, the present invention further provides methods for sealing at least one portion of the electrical device or the circuit board hermetically, while the electrical device or the circuit board would be sealed with the waterproof layer hermetically.
Abstract:
For shielding of flat modules having high-frequency components in information technology equipment, a surface of the shielding extends only over a region of the components to be shielded. The shielding surface is connected in an electrically conductive manner with a contact surface on the circuit board that surrounds the components.
Abstract:
Disclosed are a printed circuit board which buries the leads of electronic parts mounted on a printed board into a coating material to prevent the occurrence of a leak between the leads, and an electronic part designed to suppress the occurrence of cracks in a coating layer formed by coating a coating material on the electronic part and a printed board after the former is mounted on the latter. The printed circuit board comprises a printed board, a frame provided on the soldering-surface side of the printed board to surround all or a part of the soldering surface of the printed board in such a way that the amount of protrusion of the frame from the soldering surface of the printed board is made larger than that of protrusion of the leads of the electronic parts from the soldering surface side of the printed board, and a coating material injected inside the frame to bury the leads that protrude from the printed board. The electronic part comprises a case body having side walls nearly perpendicular to the mount surface of the electronic part. The electronic part has a mount surface at which the electronic part is to be attached to the printed board when mounted thereon. The mount-surface side outer peripheral portions of the side walls of the case body are each formed to have a curved surface so that as the outer peripheral portions approach the mount surface, the outer peripheral portions extend further outward.
Abstract:
Related operations are performed on workpieces, e.g., coating and curing circuit boards, of different types in random order in assembly line fashion on a rotary table of an apparatus under programmed control. The table is rotated stepwise to move successive sections thereof from a load-unload station at which the respective workpieces are loaded and unloaded in random order, to a sensing station at which the type and orientation of the workpiece is sensed, next to an initial work station at which initial work, e.g., coating, is performed on the workpiece in dependence upon its type and orientation previously sensed at the sensing station, then to a subsequent work station at which related subsequent work is performed on the workpiece, e.g., curing of the coating, and in turn back to the load-unload station to complete a cycle. The workpiece is either changed in orientation on the table section for a repeat cycle to perform further work thereon or is replaced by another workpiece in random order.