Abstract:
A plurality of conductor traces (2) are formed on a porous base insulating layer (1) made of porous ePTFE (expanded polytetrafluoroethylene). Each conductor trace has a laminated structure of a seed layer and a conductor layer. A cover insulating layer (3) is formed on the base insulating layer to cover each conductor trace. The ePTFE used as the porous base insulating layer has continuous pores. An average pore size of the ePTFE is not less than 0.05 µm and not more than 1.0 µm.
Abstract:
Provided is a method for manufacturing a multilayer ceramic electronic component, by which an underfill resin for fixing a surface mounting electronic component is prevented from flowing out, and the component can be mounted at a high density and a high accuracy. The highly reliable multilayer ceramic electronic component, which is manufactured by such manufacturing method and has excellent shock resistance and well applicable to miniaturization, is also provided. On a base section (11), which is to be mounted with a surface mounting electronic component (13), such as a semiconductor element, and has a nonmetal inorganic powder as a main component, a resin introducing section (11A) positioned outside of a vertical projection region (R) of the surface mounting electronic component is mounted. The resin introducing section is supplied with a resin (22), and the base section and a gap between the base section and a multilayer ceramic element (4) are filled with the resin. An unsintered ceramic base material layer (first ceramic layer (1)) and a shrinkage suppressing layer (second ceramic layer (2)) for suppressing shrinkage of the unsintered ceramic base material layer in the planar direction are stacked, and an unfired multilayer ceramic base element which does not shrink in a direction orthogonally intersecting with the stacking direction in a firing step is formed.
Abstract:
Circuit carrier having a metal support layer, at least some portions of which are covered by a dielectric layer, the latter having a plurality of pores, with the pores being sealed by glass at least on the opposite side of the dielectric layer to the support layer.
Abstract:
The present invention provides a signal processing device comprising: a first substrate (11), one side surface thereof (20) being provided with at least a first contact and a second contact while the other side surface thereof being provided with at least a third contact and a fourth contact, there being an electrical connection between the first and third contacts; a second substrate (10), one side surface thereof being provided with at least an integrated circuit (102) or an antenna (13); and a first connecting portion (12) for connecting the first and second substrates; wherein the second and fourth contacts are electrically connected to the integrated circuit or antenna via the first connecting portion.
Abstract:
An electrical component includes a conductive substrate (10), a tin layer (12) formed on the substrate, and a conformal coating (14) formed on the tin layer to impede tin whisker growth. The conformal coating comprises a polymer matrix (15) having gas-filled voids (16) dispersed therethrough. In a method for impeding tin whisker growth from a tin plating or finish formed over an electrical component, a gas is infused (30) into a liquid polymer. The tin plating or finish is then covered (32) with a conformal coating comprising the liquid polymer. Then, one or more of the temperature and pressure of the conformal coating are adjusted (34) to thereby create a dispersion of gas-filled voids comprising the gas in the conformal coating. .