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 layered board is disclosed which can avoid the occurrence of cracks in a core layer due to shearing stress caused by a difference in coefficient of thermal expansion between the core layer and a buildup layer. The layered board includes a core layer which serves as a printed board, a buildup layer which includes an insulation part and a wiring part, is overlaid on the core layer, and is electrically connected to the core layer, and an edge layer formed at least at an edge on the periphery of the core layer, the edge layer being different from the core layer. Alternatively, the core layer projects outward from an edge on the periphery of the buildup layer.
Abstract:
An intelligent connector assembly for use in an interface between a device and a cable, including: a block having a circuit thereon, the block being configured to be received onto a housing, with alignment features on the housing and the block such that the block is receivable in only one orientation into the housing, and a plurality of external interfaces on the block. A method of simultaneously fabricating a plurality of circuit blocks for aligned positioning onto the housing of individual connectors, by: simultaneously fabricating a plurality of blocks on a single sheet of material; cutting a repeating pattern of holes across the single sheet; and separating the single sheet into sections such that each individual block is disposed on an identically shaped section of the single sheet.
Abstract:
In order to simplify an electrical connection device for injection devices, to make them more reliable and to simplify their installation, it is proposed that the electrical connection device has a printed circuit board (1) with printed circuit board tracks (3) arranged thereon, and the printed circuit board tracks (3) lead from a connector area to a respective coil, whereby the coils on the printed circuit board (1) are conductively arranged, and the printed circuit board, the connector area and the coils are injection-molded with plastic as a single piece and produce a structural unit.
Abstract:
The memory module includes a plurality of memory units, each of which include a memory substrate, at least a memory chip having a predetermined memory capacity mounted on the memory substrate, and a conductive terminal provided at a lower edge portion of the memory substrate to electrically connect with the memory chip. An assembling arrangement includes a first joint provided at a side edge of each of the memory substrates and a second joint provided at an opposed side edge of each of the memory substrates, wherein the first joint of the memory unit is detachably engaged with the second joint of the adjacent memory unit to alignedly couple the memory units with each other in an edge to edge manner, such that the memory units form the memory module.
Abstract:
A printed circuit board provided with an attachment which surrounds surface contacts of the printed circuit board that are to be contacted by a printed circuit board connector that covers the portion of the printed circuit board and edges of the printed circuit board around the surface contacts and includes recesses corresponding to the surface contacts assuring proper connection with contacts of a printed circuit board connector.
Abstract:
A wireless suspension design is described that can be used in varying types of drive designs. In one embodiment, a flex circuit is provided with at least two indicia to indicate where the flex circuit is to be bent when attaching it to a head stack assembly.
Abstract:
A dielectric antenna module (1) includes an antenna element unit (50) having an antenna element (5) consisting of a radiation electrode (3) and a signal line (4) formed on a dielectric substrate (2), and a module substrate unit (60) having a signal processing circuit formed on a module substrate (6). The substrate (2,6) are arranged and connected to each other so that their bottom surfaces form a single plane. The antenna element unit (50) and the module substrate unit (60) are connected to each other by fitting a projection (8) to a recess (9) formed on and in the opposing faces of the substrates (2,6). On the projection (8) and in the recess (9), signal lines (4,4a) are formed, respectively, and on the opposing faces of the substrates (2,6), ground electrodes (11,11a) are formed. When the projection and recesses are engaged, the signal lines (4,4a) are connected to each other and the ground electrodes (11,11a) are connected to each other. A base film (10) where a ground electrode is formed is attached to the bottan surface of the substrates (2,6).
Abstract:
A connector, particularly suited for use in a digital camera, having electrostatic discharge features that prevent the occurrence of electrostatic discharge events. The connector comprises a printed circuit board that includes a ground contact, a power contact, and a plurality of signal contacts that are offset from an edge of the printed circuit board. A row of vias are disposed between the signal contacts and the edge of the printed circuit board, and adjacent opposite sides of each of the signal contacts, that attract electrostatic energy before it can reach the signal contacts. The signal contacts have different lengths and shapes, depending upon their purpose. An electrostatic discharge protection method and digital camera are also disclosed.
Abstract:
In a liquid crystal display device having a flexible printed circuit board which includes a laminated structure of a pair of flexible films, a plurality of first conductive layers interposed between inner surfaces of the flexible films to be spaced from each other, and a plurality of groups of terminals formed on an outer surface of one of flexible films opposite to the respective first conductive layers, and a liquid crystal display panel which includes a plurality of groups of wirings formed on one of a pair of substrates thereof and connected to the plurality of groups of terminals respectively, the present invention interposes second conductive layers at respective portions spacing the plurality of first conductive layers between the inner surfaces of the flexible films and prevents the one of the pair of substrates from being cracked when the plurality of terminals of the flexible printed circuit board are connected to the groups of wiring of the one of the substrates by compression bonding thereby.