Abstract:
A hybrid integrated circuit device having high mount reliability includes a module substrate which is a ceramic wiring substrate, a plurality of electronic component parts laid out on the main surface of the module substrate, a plurality of electrode terminals laid out on the rear surface of the module substrate, and a cap which is fixed to the module substrate to cover the main surface of the module substrate. The electrode terminals include ones which are aligned along the edges of the module substrate and power voltage supply terminals which are located inner than these electrode terminals. The electrode terminals aligned along the substrate edges are coated, at least in their portions close to the substrate edge, with a protection film having a thickness of several tens micrometers or less. Connection reinforcing terminals consist of a plurality of divided terminals which are independent of each other, and are ground terminals.
Abstract:
A method of fabricating a circuit board is provided. An elastic bump material layer is formed on a substrate and then is patterned to form a plurality of first elastic bumps and a plurality of second elastic bumps, arranged in at least an array. A conductive layer is formed and then is patterned to form a patterned circuit layer to cover first plurality of elastic bumps and a portion of the substrate. An entirety of the plurality of second elastic bumps and another portion of the substrate are not covered by the patterned circuit layer. A protection layer is formed to cover a portion of the patterned circuit layer, a second number of the plurality of second elastic bumps entirely, a third number of the plurality of second elastic bumps partially and the another portion of the substrate, and expose the first number of the plurality of second elastic bumps.
Abstract:
Polymer materials are useful as electrode array bodies for neural stimulation. They are particularly useful for retinal stimulation to create artificial vision, cochlear stimulation to create artificial hearing, and cortical stimulation, and many related purposes. The pressure applied against the retina, or other neural tissue, by an electrode array is critical. Too little pressure causes increased electrical resistance, along with electric field dispersion. Too much pressure may block blood flow. Common flexible circuit fabrication techniques generally require that a flexible circuit electrode array be made flat. Since neural tissue is almost never flat, a flat array will necessarily apply uneven pressure. Further, the edges of a flexible circuit polymer array may be sharp and cut the delicate neural tissue. By applying the right amount of heat to a completed array, a curve can be induced. With a thermoplastic polymer it may be further advantageous to repeatedly heat the flexible circuit in multiple molds, each with a decreasing radius. Further, it is advantageous to add material along the edges. It is further advantageous to provide a fold or twist in the flexible circuit array. Additional material may be added inside and outside the fold to promote a good seal with tissue.
Abstract:
A method is provided for coating an optoelectronic chip-on-board module, including a flat substrate populated with one or more optoelectronic components, having a transparent, UV-resistant, and temperature-resistant coating made of one or more silicones. A corresponding optoelectronic chip-on-board module and a system having multiple optoelectronic chip-on-board modules are also provided. The method includes the following steps: a) preheating the substrate to be coated to a first temperature; b) applying on the preheated substrate a dam that encloses a surface area or partial area of the substrate to be coated, the dam being made of a first, heat-curable, highly reactive silicone that cures at the first temperature; c) filling the surface area or partial area of the substrate enclosed by the dam with a liquid second silicone; and d) curing the second silicone.
Abstract:
A process for forming a laminate with capacitance and the laminate formed thereby. The process includes the steps of providing a substrate and laminating a conductive foil on the substrate wherein the foil has a dielectric. A conductive layer is formed on the dielectric. The conductive foil is treated to electrically isolate a region of conductive foil containing the conductive layer from additional conductive foil. A cathodic conductive couple is made between the conductive layer and a cathode trace and an anodic conductive couple is made between the conductive foil and an anode trace.
Abstract:
An apparatus for detecting pattern alignment error includes a first conductive pattern disposed over a first insulation member with a power source applied of the first conductive pattern; a second insulation member for covering the first conductive pattern; a second conductive pattern disposed on the second insulation member; a conductive via connected to the second conductive pattern and passing through the second insulation member; and an insulation pattern disposed in the first conductive pattern for detecting an alignment error in response to a position of the conductive via. The apparatus for detecting pattern alignment error can detect the alignment of lower wiring in a device with multi-layer wiring.
Abstract:
A substrate device includes: a substrate; a ground layer disposed on one of two opposing surfaces of the substrate; a transmission line disposed on the other of the two opposing surfaces of the substrate; a pad which is disposed on the other of the two opposing surfaces of the substrate and connected to the transmission line; and a connector connected to the pad via a contact point. The pad has a part on the transmission line side and a part positioned on the opposite side of the transmission line with respect to the contact point with the connector which are electrically insulated from each other.
Abstract:
An electronic circuit device 1 arranged with a first substrate 11, a core 33 (magnetic body) mounted on the first substrate 11, a resin sealing body 17 which covers the first substrate 11 and the core 33, and a curable type stress relieving material 35 which reduces stress applied to the core 33 by the resin sealing body 17 is arranged within the resin sealing body 33 from the side surface periphery of the core 33 across to the first substrate 11.
Abstract:
A hybrid integrated circuit device having high mount reliability includes a module substrate which is a ceramic wiring substrate, a plurality of electronic component parts laid out on the main surface of the module substrate, a plurality of electrode terminals laid out on the rear surface of the module substrate, and a cap which is fixed to the module substrate to cover the main surface of the module substrate. The electrode terminals include ones which are aligned along the edges of the module substrate and power voltage supply terminals which are located inner than these electrode terminals. The electrode terminals aligned along the substrate edges are coated, at least in their portions close to the substrate edge, with a protection film having a thickness of several tens micrometers or less. Connection reinforcing terminals consist of a plurality of divided terminals which are independent of each other, and are ground terminals.
Abstract:
A technique for processing an electronic apparatus (e.g., manufacturing an assembled circuit board, treating an assembled circuit board, etc.) involves applying encasement material to an area of the circuit board assembly while leaving at least a portion of the circuit board assembly exposed. The technique further involves causing the applied encasement material to harden (e.g., heating the encasement material in a curing oven, applying radiation, providing a chemical catalyst, etc.). Application and hardening of the encasement material may take place shortly after circuit board assembly (e.g., by automated equipment at a manufacturing facility in order to treat newly assembled boards) or at some later time in the field (e.g., by a technician servicing a legacy board).