Abstract:
Methods for protecting an electronic device from contaminants by applying different polymeric materials to different vital components of a device are disclosed, in one embodiment, the method comprises applying an electrically insulating polymer, such as an acrylic-based polymer, to one or more connectors and components located on the printed circuit board of the device. The method further comprises applying a polymer capable of carrying a charge, such as a silicone-based polymer, to different connectors and components on the printed circuit board. The method leads to different components being coated with a different polymers. Electronic devices that are protected by such polymeric, hydrophobic coatings are also disclosed, such as smart phones, computers, and gaming devices.
Abstract:
Encapsulated conformal electronic devices, encapsulated conformal integrated circuit (IC) systems, and methods of making and using encapsulated conformal electronic devices are presented herein. A conformal IC device is disclosed which includes a flexible substrate, electronic circuitry attached to the flexible substrate, and a flexible multi-part encapsulation housing encasing therein the electronic circuitry and flexible substrate. The multi-part housing includes first and second encapsulation housing components. The first encapsulation housing component has recessed regions for seating therein the electronic circuitry, while the second encapsulation housing component has recessed regions for seating therein the flexible substrate. First encapsulation housing component optionally includes a recessed region for seating therein the flexible substrate. Either housing component may include one or more projections that pass through holes in the substrate to engage complementary depressions in the other housing component to thereby align and interlock the encapsulation housing components with the flexible substrate and electronic circuitry.
Abstract:
The present invention concerns a process for the deposition of a solder-through polymer coating on an uncoated printed circuit board which comprises the use of an average low power and low pressure plasma polymerisation in a polymerisation chamber of an organosilane precursor monomer which is introduced into said polymerisation chamber by means of a carrier gas, said organosilane being of the Formula Y1-X-Y2 (I) or -[Si(CH3)2-X-]n- (II), wherein : X is O or NH; Y1 is - Si(Y3)(Y4)Y5; Y2 is Si(Y3')(Y4')Y5'; Y3, Y4, Y5, Υ3', Υ4', and Y5' are each independently H or an alkyl group of up to 10 carbon atoms; the monomer of formula (II) is cyclic wherein n is 2 to 10, and wherein at most one of Y3, Y4 and Y5 is hydrogen, at most one of Υ3', Y4' and Y5' is hydrogen and the total number of carbon atoms is not more than 20.
Abstract:
Method and apparatuses for making a smart phone on a chip (SPOC) are described. Active components (210) are embedded into a copper core (212). In an aspect, and optionally, passive components may also be embedded into the copper core. Printed circuit board (PCB) laminate (224, 225) is layered above and below the copper core. A copper ground plane (214) is fixed underneath the layer of PCB laminate (225) below, and furthest from, the copper core. One or more additional components (218, 220) are surface mounted on top of the PCB laminate layers (224) above the copper core. A conformal coating is applied to completely and thinly encase the one or more surface mounted additional components. The conformal coating includes trenching and a copper sputter coating finish.
Abstract:
Disclosed are one-component compositions that include: (1) an isocyanate-functional urethane acrylate and (2) a polyisocyanate containing allophanate and/or uretdione groups, wherein the one-component composition has a viscosity of less than or equal to about 800mPa.s and an isocyanate content of greater than about 5% by weight, based on the weight of the one-component composition. Also disclosed are circuit boards and electronic components that are coated with such compositions.
Abstract:
Methods and apparatuses are disclosed for fabricating a printed circuit board (PCB) having electromagnetic interference (EMI) shielding and also having reduced volume over conventional frame-and-shield approaches. Some embodiments include fabricating the PCB by mounting an integrated circuit to the PCB, outlining an area corresponding to the integrated circuit with a number of grounded vias, selectively applying an insulating layer over the PCB such that at least one of the grounded vias are exposed, and selectively applying a conductive layer over the PCB such that the conductive layer covers at least a portion of the integrated circuit and such that the conductive layer is coupled to the at least one of the grounded vias that are exposed.
Abstract:
A method for reducing creep corrosion on a printed circuit board, the printed circuit board comprising a substrate, a plurality of electrically conductive tracks located on at least one surface of the substrate, a solder mask coating at least a first area of the plurality of electrically conductive tracks and a surface finish coating at least a second area of the plurality of electrically conductive tracks, the method comprising depositing by plasma-polymerization a fluorohydrocarbon onto at least part of the solder mask and at least part of the surface finish.
Abstract:
An implantable medical device including a plurality of components on a substrate, and a biocompatible multi-layer coating applied by vapour 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:
The invention relates to a conformal nanocoating applied by a low pressure plasma process. The invention also relates to a method for making such a conformal nanocoating on a three-dimensional nanostructure, in particular a three- dimensional structure containing electrically conductive and non-conductive elements.
Abstract:
The present disclosure relates, in part, to Parylene based conformal coating compositions having improved properties, e.g., improved heat transfer and durability characteristics, as well as a methods and apparatus to coat objects with these compositions, and objects coated with these compositions. In some aspects, coating compositions comprising Parylene and boron nitride are disclosed. The disclosure also includes objects (e.g., electronic equipment, textiles, etc.) having a conformal coating comprising a Parylene compound and boron nitride.