Abstract:
An assembly comprises a flex circuit including a first set of electrical contacts on a first side of the flex circuit and a compliant support backing adjacent a second side of the flex circuit and opposite the set of electrical contacts. The first set of electrical contacts is configured to connect to a second set of electrical contacts on an electronic component. The compliant support backing includes a set of support elements that individually support the first set of electrical contacts to increase the contact pressure between the first set of electrical contacts and the second set of electrical contacts when the flex circuit is connected to the electronic component. Embodiments may provide robust electrical contracts which provide a reliable connection useful for testing electronic components, such as head gimbal assemblies.
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 for manufacturing a semiconductor device is provided including: providing a reinforcing member on one surface of a wiring substrate that has a first region where a semiconductor chip is mounted and a second region around the first region, and has terminals extending from the first region to the second region formed on another surface thereof in a manner that the reinforcing member overlaps the terminals and a part thereof protrudes from the first region to the second region; cutting the terminals along a boundary between the first region and the second region; and continuously cutting the reinforcing member from an inboard side thereof to an outboard side along the boundary between the first region and the second region.
Abstract:
A method of manufacturing an electronic device includes the steps of: forming a conductive pattern on a film made of a resin material and thereby forming a base body on which a circuit chip is mounted; forming a reinforcing layer that suppresses expansion and contraction of the film in either one of a mounting area on the film which area the circuit chip is mounted on and a rear area at the back of the mounting area; applying a thermosetting adhesive; mounting the circuit chip; pinching the base body mounted with the circuit chip by a heating device that heats the thermosetting adhesive and has a pressing section and a supporting section; and fixing the circuit chip to the conductive pattern by hardening the thermosetting adhesive through heating by the heating device.
Abstract:
A carriage assembly of a hard disk drive is constructed so that the bonding of flying leads of a long tail suspension circuit board and bonding terminals of a flexible printed circuit board can be carried out uniformly and reliably, and the problem of the flying leads breaking when the flying leads are pulled off the bonding terminals does not occur. The flexible printed circuit board is attached to a reinforced part by an adhesive in which spacers with a substantially equal particle diameter are mixed, and the flying leads and the bonding terminals are bonded together by ultrasonic bonding by applying ultrasonic vibration in a state where the flying leads are pressed onto the bonding terminals. In addition, an insulating film is provided on an opposite surface of the flying leads to the surface bonded to the bonding terminals, and during the ultrasonic bonding, ultrasonic vibration is applied in a state where the flying leads are pressed via the insulating film onto the bonding terminals.
Abstract:
The present invention relates to a flexible printed circuit board assembly. A flexible printed circuit board assembly of the present invention comprises a flexible printed circuit board having a plurality of circuit patterns; a connector mounted at a location spaced apart by a certain distance from an end of the flexible printed circuit board and electrically connected to the, circuit patterns; and a stiffener attached to a region on a bottom surface of the flexible printed circuit board below the connector and having a size corresponding to that of the connector. A connector inside portion and a connector outside portion of the flexible printed circuit board located inside and outside with respect to the connector can be bent. The connector outside portion is bent and bonded to a bottom surface of the stiffener, and the connector inside portion is bent and bonded to a bottom surface of the connector outside portion.
Abstract:
A method for manufacturing an electronic part, including: cutting a wiring substrate, which contains a base substrate, a wiring pattern provided on a first surface of the base substrate, and a reinforcing member provided on a second surface of the base substrate, along a line intersecting with an outer circumference of the reinforcing member; wherein a wire, out of a plurality of wires composing the wiring pattern, arranged closest to an intersecting point of the outer circumference of the reinforcing member and the line has a widest width.
Abstract:
An electro-optical module comprising flexible connection cable and aligning capabilities is disclosed. Electro-optical devices may be soldered on a transparent substrate such as glass or a substrate comprising an optical waveguide wherein electrically conductive traces are designed, forming an electro-optical module. When such electro-optical module is inserted and aligned into a printed circuit board, the external part of the substrate, comprising electrically conductive traces and pads, referred to as flex-cable, is bent down toward the mounting plane of the PCB allowing to establish electrical connections between these pads and the PCB. The substrate may be broken along a pre-formed groove, and the external part of the substrate can be removed leaving the flex-cable section in place.
Abstract:
A miniature multiple die packaging assembly suitable for use in a radio is provided. The assembly includes a heatsink having contact with a chassis of the radio, a circuit board containing a plurality of active devices having leads to a perimeter of the circuit board, and a mating board having an opening. The mating board attaches along a top perimeter of the circuit board to pass the leads of the circuit board for extending a connection of the active devices to a radio board. The plurality of active devices are in contact and coplanar with the heatsink for providing efficient heat dissipation. The circuit board can interchangeably accept single package die or multiple package die having different sizes and layouts.
Abstract:
An IC chip package and related method are disclosed. The IC chip package may include a printed circuit board (PCB) coupled to a chip module by a land grid array (LGA) connector, a metal stiffener including a fluid-based pressure compensator contacting an underside of the PCB, and at least two couplers for coupling the metal stiffener to the chip module, with the PCB and the LGA connector therebetween. The fluid-based pressure compensator automatically compensates for natural and non-systematic out-of flatness tolerances of the PCB and the chip module, and non-uniform thickness of the PCB while creating a substantially uniform contact force on the LGA.