Abstract:
An apparatus and method for an adhesive assembly for securing a printed circuit board to a substrate. The assembly provides a printing tool with a plurality of apertures defined therethrough. Preferably, the apertures have a top opening with a larger area than a bottom opening. The printing tool is placed upon one of the printed circuit board and/or substrate, and a liquid adhesive is printed onto the printing tool. The liquid adhesive forms islands of adhesive within each aperture. Removing the printing tool deforms each island to form a raised edge at a periphery of each island. A temporary liner can be placed on the raised edges to protect the adhesive until the printed circuit board can be assembled with the substrate.
Abstract:
A method for forming a solder bump on an integrated circuit die utilizes a terminal (12) formed of an electrically conductive, solder-wettable composite material composed of copper particles and a polymeric binder. The terminal comprises a bond pad (24) overlying a passivation layer (20) on the die and a runner section (26) connecting the bond pad to a metal contact (16). The terminal is applied to the die, for example, as an ink by screen printing, after which a body of solder alloy is reflowed in contact with the bond pad to form the bump. A preferred material for the terminal is composed of silver-plated copper particles and a resol type phenolic binder.
Abstract:
A method for forming a solder bump on an integrated circuit die utilizes a terminal (12) formed of an electrically conductive, solder-wettable composite material composed of copper particles and a polymeric binder. The terminal comprises a bond pad (24) overlying a passivation layer (20) on the die and a runner section (26) connecting the bond pad to a metal contact (16). The terminal is applied to the die, for example, as an ink by screen printing, after which a body of solder alloy is reflowed in contact with the bond pad to form the bump. A preferred material for the terminal is composed of silver-plated copper particles and a resol type phenolic binder.
Abstract:
An apparatus and method for assembling a plurality of articles with carriers in a connected carrier strip. The apparatus and method separates the strip of carriers assembled with a plurality of articles to form discrete packages of a plurality of articles by dividing the carrier strip horizontally tranversely to the path of travel of the articles and the assembled carrier strip. The portion of the apparatus for separating the articles is positionable between groups of articles moving along a path of travel and provides tensioning of the carrier strip between groups of articles to facilitate dividing the carrier strip along weakened lines.
Abstract:
An article stack unifying device having article stacking elements is provided to stack a plurality of articles on a surface on or of a rotatable surface. While the articles are being stacked on the selected surface a quantity of wrapping film is wrapped around the stack of articles at intervals during the stacking process and at the completion of the stack.
Abstract:
A machine for packaging multiple containers wherein a flexible carrier stock is fed across a jaw drum. A plurality of containers are also moved through the machine whereby the carrier is subsequently positioned over the plurality of containers so that flexible carrier stock engages with one of the containers to form a package. The jaw drum and/or a connected feed drum are preferably adjustable to accommodate a range of container sizes and carrier configurations.
Abstract:
An electronic control unit having a flexible circuit board assembly is disclosed. The electronic control unit comprises a flexible circuit board with at least one layer having first and second portions separated by a bendable region. The electronic control unit further comprises a substantially rigid substrate having first and second portions separated by a bend region and inside and outside surfaces. The first and second portions of the circuit board are affixed to respective first and second portions of the substrate. The bend region has one of the group of a recess and aperture extending outwardly from the inside surface of the substrate with the one of the group of the recess and aperture sized to accept the bendable region of the circuit board.
Abstract:
A flexible circuit board assembly and method includes a rigid circuit board having a first portion and a second portion separated by a bending region. A plurality of grooves are cut into the bending region. The grooves are cut substantially parallel to an axis about which the bending region is bent. Preferably, the grooves are located on an inside bending radius of the circuit board, but can be located on the outside radius or both.
Abstract:
A flexible circuit board (20) having a substantially rigid substrate (22) and an electrical resistance heater trace (24). The substantially rigid substrate (22) has a first portion (26), a second portion (28), and a bend region (30). The bend region (30) interconnects the first portion (26) and the second portion (28). The electrical resistance heater trace (24) is formed on the bend region (30) of the substrate (22). The first portion (26) of the substrate (22) is capable of being folded relative to the second portion (28) of the substrate (22) to form at least one bend (72, 172) in the bend region (30) when an electric current is applied to the heater trace (24). There is also an electronic control unit (60, 160) that includes the flexible circuit board (20) and a method of assembling an electronic control unit (60, 160).
Abstract:
An electronic control unit (ECU) includes a flexible circuit substrate having a first partition interconnected to a third partition by a second, flexible partition. The electronic control unit further includes a rigidizer having a first partition interconnected to a third partition by a second partition. When the ECU is twice folded, the second, flexible partition of the circuit substrate assumes an approximate ‘U’-shape, resulting in a reduced cracking and splitting rate than the prior art. In various embodiments of the present invention, the assumption of a ‘U’-shaped fold in the second, flexible partition of the circuit substrate is facilitated by multiple apertures in a second rigidizer partition, by a depression in a second rigidizer partition, or by non-slidably affixing a first circuit substrate partition to a first rigidizer partition via a first adhesive and non-slidably affixing a third circuit substrate partition to a third rigidizer partition via a second adhesive.