摘要:
This invention relates to a capacitive/resistive device, which may be embedded within a layer of a printed wiring board. Embedding the device conserves board surface real estate, and reduces the number of solder connections, thereby increasing reliability. More specifically, the device, comprises a first metallic foil; a second metallic foil; a first electrode formed from the first metallic foil; a dielectric disposed over the first electrode; a resistor element formed on and adjacent to the dielectric; a conductive trace; and a second electrode formed from the second metallic foil and disposed over the dielectric and in electrical contact with the resistor element, wherein the dielectric is disposed between the first electrode and the second electrode and wherein said dielectric comprises an unfilled polymer of dielectric constant less than 4.0.
摘要:
This invention relates to a capacitive/resistive device, which may be embedded within a layer of a printed wiring board. Embedding the device conserves board surface real estate, and reduces the number of solder connections, thereby increasing reliability. More specifically, the device, comprises a first metallic foil; a second metallic foil; a first electrode formed from the first metallic foil; a dielectric disposed over the first electrode; a resistor element formed on and adjacent to the dielectric; a conductive trace; and a second electrode formed from the second metallic foil and disposed over the dielectric and in electrical contact with the resistor element, wherein the dielectric is disposed between the first electrode and the second electrode and wherein said dielectric comprises an unfilled polymer of dielectric constant less than 4.0.
摘要:
This invention relates to a capacitive/resistive device, which may be embedded within a layer of a printed wiring board. Embedding the device conserves board surface real estate, and reduces the number of solder connections, thereby increasing reliability. More specifically, the device, comprises a first metallic foil; a second metallic foil; a first electrode formed from the first metallic foil; a dielectric disposed over the first electrode, a resistor element formed on and adjacent to the dielectric; a conductive trace; and a second electrode formed from the second metallic foil and disposed over the dielectric and in electrical contact with the resistor element, wherein the dielectric is disposed between the first electrode and the second electrode and wherein said dielectric comprises an unfilled polymer of dielectric constant less than 4.0. This invention also relates to a method of making the device.
摘要:
A capacitive/resistive device provides both resistive and capacitive functions. The capacitive/resistive device may be embedded within a layer of a printed wiring board. Embedding the capacitive/resistive device conserves board surface real estate, and reduces the number of solder connections, thereby increasing reliability. Conserves board surface real estate, and reduces the number of solder connections, thereby increasing reliability.
摘要:
A capacitive/resistive device provides both resistive and capacitive functions. The capacitive/resistive device may be embedded within a layer of a printed wiring board. Embedding the capacitive/resistive device conserves board surface real estate, and reduces the number of solder connections, thereby increasing reliability.
摘要:
The present invention relates to methods of forming multilayer structures and the structures themselves. In one embodiment, a method of forming a multilayer structure comprises: providing a dielectric composition comprising paraelectric filler and polymer wherein the paraelectric filler has a dielectric constant between 50 and 150; applying the dielectric composition to a carrier film thus forming a multilayer film comprising a dielectric layer and carrier film layer; laminating the multilayer film to a circuitized core wherein the dielectric layer of the multilayer film is facing the circuitized core; and removing the carrier film layer from the dielectric layer prior to processing; applying a metallic layer to the dielectric layer wherein the circuitized core, dielectric layer and metallic layer form a planar capacitor; and processing the planar capacitor to form a multilayer structure.
摘要:
The present disclosure relates to a dielectric composition having a resin and a filler. The filler is used to raise the dielectric and has a passivating surface coating thereon.
摘要:
A polymeric dielectric composition is disclosed, having a paraelectric filler with a dielectric constant between 50 and 150. Such compositions are well suited for electronic circuitry, such as, multilayer printed circuits, flexible circuits, semiconductor packaging and buried film capacitors.