Abstract:
The invention provides a method of making a capacitor comprising: providing a metallic foil; forming a capacitor dielectric over said metallic foil; forming a first electrode over a portion of said capacitor dielectric, thus forming a component side of said metallic foil; laminating the component side of said metallic foil to a laminate material; and etching said metallic foil outside the boundary of said capacitor dielectric to form a second electrode. Using this method allows the laminate material to prevent etching solutions from coming in contact with and damaging the capacitor dielectric layers.
Abstract:
A capacitive/resistive device (101) provides both resistive and capacitive functions. The capacitive/resistive device (101) may be embedded within a layer of a printed wiring board (1000). The capacitive/resistive device (101) comprises a first electrode (110); a dielectric (120) disposed over the first electrode (110); a resistor element (140) formed on and adjacent to the dielectric (120); a conductive trace (145); and a second electrode (130) disposed over the dielectric (120) and in electrical contact with the resistor element (140), wherein the dielectric is disposed between the first electrode (110) and the second electrode (130) and wherein the dielectric (120) comprises a polymer filled with a high dielectric constant powder phase.
Abstract:
A circuitized substrate (11) comprised of at least one dielectric material (13) having an electrically conductive pattern thereon. At least part of the pattern is used as the first layer of an organic memory device (35) which further includes at least a second dielectric layer over the pattern and a second pattern aligned with respect to the lower part for achieving several points of contact to thus form the device. The substrate (11) is preferably combined with other dielectric-circuit layered assemblies to form a multilayered substrate on which can be positioned discrete electronic components (e.g., a logic chip) coupled to the internal memory device to work in combination therewith. An electrical assembly (71) capable of using the substrate is also provided, as is an information handling system (101) adapted for using one or more such electrical assemblies as part thereof.
Abstract:
A method for fabricating a flexible interconnect film includes applying a resistor layer (16,18) over one or both surfaces of a dielectric film (10); applying a metallization layer (22) over the resistor layer with the resistor layer including a material facilitating adhesion of the dielectric film and the metallization layer; applying a capacitor dielectric layer (24a) over the metallization layer; and applying a capacitor electrode layer (26a) over the capacitor dielectric layer. The capacitor electrode layer is patterned to form a first capacitor electrode; the capacitor dielectric layer is patterned; the metallization layer is patterned to form a resistor (28); and the metallization layer and the resistor layer are patterned to form an inductor (33) and a second capacitor electrode. In one embodiment, the dielectric film includes a polyimide, the resistor layer includes tantalum nitride, and the capacitor dielectric layer includes amorphous hydrogenated carbon or tantalum oxide. If the resistor and metallization layers are applied over both surfaces of the dielectric film, passive components can be fabricated on both surfaces of the dielectric film. The dielectric film can have vias therein with the resistor and metallization layers extending through the vias. A circuit chip can be attached and coupled to the passive components by metallization patterned through vias in an additional dielectric layer.
Abstract:
An electrical circuit package wherein a flexible support member (11) having conductive materials (91, 94) and electronic components thereon is fused with a substrate (12) which acts as a support for the film. This results in a unitary packaged circuit. In one embodiment the film is a decal on which certain portions have a substrate fused thereto. In other embodiments, various layers of conductive materials (91, 94) are applied and molded into the substrate (12) to form a variety of electronic functions. The circuit package lends itself to high production and reliability as well as cost savings.
Abstract:
The invention provides a mixed circuit board comprising a heat-resistant insulating substrate (16) and at least one laminated sheet (10,20) bonded integrally to at least one side of the substrate (16), the laminated sheet (10,20) comprising a metal oxide dielectric film (13), a metal resistor film (12) formed on the dielectric film (13) and a pair of metal conductor layers (11,15) between which the dielectric film (13) and resistor (12) film are sandwiched. A method for fabricating the mixed circuit board is also described.
Abstract:
An electrical circuit package wherein a flexible support member (11) having conductive materials (91, 94) and electronic components thereon is fused with a substrate (12) which acts as a support for the film. This results in a unitary packaged circuit. In one embodiment the film is a decal on which certain portions have a substrate fused thereto. In other embodiments, various layers of conductive materials (91, 94) are applied and molded into the substrate (12) to form a variety of electronic functions. The circuit package lends itself to high production and reliability as well as cost savings.