A nanocomposite coating composition for use in the mitigation of whisker growth from a metallic surface (82) includes a polymer matrix (86) comprising a base polymer and insulating material nanoplatelets (85), for example clay nanoplatelets, within the polymer matrix (86). A conformal coating (84) for application to a metal surface (82) is formed from the coating composition. The conformal coating mitigates the spontaneous growth of whiskers (83), in particular tin whiskers, from the coated surface (82), reducing the risk of short-circuits caused by such whiskers bridging gaps within electronic devices. Methods are provided for the preparation of coating compositions and coatings.

The embodiments of the present disclosure relate to the technical field of manufacturing display device, and disclose a backlight golden finger structure and a display device. The backlight golden finger structure includes: a plurality of golden finger bodies, one end of each golden finger body being configured to be connected with a backlight flexible circuit board, the other end of each golden finger body being overhung and configured to be connected with a display panel flexible circuit board at a first surface of the backlight golden finger structure; and a first covering film disposed on the first surface of each golden finger body, an edge of the first covering film adjacent to the overhung end of the golden finger body being in a curved shape.

An apparatus for use in monitoring or treating a wound is disclosed. The apparatus can include a wound dressing, a circuit board, and a sensor. The wound dressing can be positioned over a wound of a patient and absorb wound exudate from the wound. The circuit board can be incorporated in or coupled to the wound dressing and include a first conductive pathway extending around at least part of a perimeter of a first side of the circuit board. The first conductive pathway can be electrically coupled to an electrical ground for the circuit board. The sensor can be mounted on the circuit board and output a signal usable to determine a value indicative of a physiological parameter of the patient. The first conductive pathway can protect the sensor against an electrostatic discharge.

An appliance with automatic sensing of printed circuit board (PCB) trace integrity and associated methods of sensing are provided. The appliance may include a controller operative to control operation of the appliance, a load in operative communication with the controller, and a PCB. The PCB may include a first trace supplying AC power to the load, a second trace supplying a return path for the AC power, a third trace supplying an alternate return path for the AC power, and current sensing circuitry. The current sensing circuitry may be configured to sense leakage current between the first trace and the third trace, with the leakage current being indicative of declining trace integrity of the PCB.

A method for manufacturing a waterproof circuit board comprises steps of providing a first wiring substrate suitable for high-frequency transmissions. The first wiring substrate includes a first copper layer and a first conductive wiring layer. A waterproof layer is formed on exposed surfaces of the first wiring substrate. A second wiring substrate suitable for low-frequency transmissions defines a receiving groove. The second wiring substrate includes a second copper layer and defines a first blind hole. The first wiring substrate is pressed in the receiving groove. A first conductive portion is formed in the first blind hole to electrically connect the first conductive wiring layer and the second copper layer.

A printed circuit board (PCB) stack having a plurality of layers is received. A conformal coating layer is applied to one or more external layers of the plurality of layers. A conductive ink is applied to one or more portions of the protective conformal coating layer to form one or more conductive features on the protective conformal coating layer.

An etch chemistry solution for treating metallic surfaces in which the etch chemistry solution includes an oxidizing agent and gluconic acid. The etch chemistry solution may also include an oxidizing agent and a short-chained polyethylene polymer glycol or a short-chained polyethylene copolymer glycol. The metallic surfaces are usually used in circuits such as flexible circuits.

The present invention relates to a method for manufacturing an electronic or electrical system, the method comprising the layer-free production of at least one physical structure (101, 102) which is designed to guide electromagnetic waves, using at least one additively operating apparatus, wherein the layer-free production of the spatial, layer-free structure comprises the simultaneous or sequential application and/or removal of one or more materials in the spatial arrangement, as a result of which the electronic or electrical system is partially or completely formed. The invention further relates to a system which is manufactured in accordance with the method.

A controller can include a processor; memory accessible by the processor; a display; and processor-executable instructions stored in the memory and executable by the processor to control: a conveyor that conveys a product that includes a coating; a UV zone that comprises LED-based UV radiation sources that illuminate the coating; and a heating zone that heats the coating.

A processing machine can include motors; at least one heater; first and second processing enclosures separated by a gap; an upper level conveyor that passes circuit assemblies through the first and second processing enclosures and the gap; a lower level conveyor that passes the circuit assemblies through the first and second processing enclosures and the gap; an elevator that transports the circuit assemblies between the upper level conveyor and the lower level conveyor; and a controller that includes circuitry operatively coupled to the motors and to the at least one heater.