Abstract:
An interconnection substrate (10) includes a plurality of electrically conductive elements (14) of at least one wiring layer (11) defining first and second lateral directions. Electrically conductive projections for bonding to electrically conductive contacts of at least one component external to the substrate, extend from the conductive elements above the at least one wiring layer. The conductive projections have end portions (30) remote from the conductive elements and neck portions (20) between the conductive elements and the end portions. The end portions have lower surfaces (32) extending outwardly from the neck portions in at least one of the lateral directions. The substrate further includes a dielectric layer (40) overlying the conductive elements and extending upwardly along the neck portions at least to the lower surfaces. At least portions (46) of the dielectric layer between the conductive projections are recessed below a height of the lower surfaces.
Abstract:
A multilayered metal wiring board and a method for manufacturing the same are provided, suitable for manufacturing a metal wiring used as coaxial conductor. The method includes: coating a photo resist layer (304) on a dielectric layer of the multilayered board (300) and exposing the photo resist layer (304) in order to define a predetermined position of the metal wiring; stripping the photo resist layer (304) on the predetermined position; after forming the metal wiring (302) on the predetermined position , forming at least one upper covering metal layer (306) on the surface of the metal wiring (302). It's possible to form a covering metal layer on the upper surface, the sides, and even the bottom surface of the metal wiring by only one photo mask process.
Abstract:
A circuit board includes an electrically conductive sheet having an insulative coating surrounding the conductive sheet, with a surface of the insulative coating around an edge of the conductive sheet having an arcuate or rounded shape. At least one electrical conductor is conformally deposited on at least the rounded insulative coating around the edge of the conductive sheet and defined via photolithographic and metallization techniques. Each electrical conductor on the insulative coating thereon around the edge of the conductive sheet conforms to the arcuate or rounded shape of the insulative coating and, therefore, has an arcuate or rounded shape.
Abstract:
The present invention provides an at least partially coated fiber strand (10) comprising a plurality of fibers (12) having a resin compatible coating composition (14) on at least a portion (17) of a surface (16) of at least one of the fibers (23), the resin compatible coating composition (14) comprising: a) a plurality of discrete particles (18) comprising a silicate having a high affinity for metal ions; and b) at least one film-forming material.
Abstract:
The present invention provides an electronic support (10) comprising: (A) at least one woven fiber reinforcement material (20) formed from at least one fiber free of basalt glass; and (B) at least one matrix material (16) in contact with at least a portion of the at least one reinforcement material (20), the at least one matrix material (16) comprising at least one non-fluorinated polymer and at least one inorganic filler (18), wherein the at least one inorganic filler (18) comprises at least one non-hydratable, lamellar inorganic solid lubricant having a high electrical resistivity and wherein the at least one inorganic filler (18) comprises at least 6 weight percent of a total combined weight of the at least one inorganic filler (18) and the at least one matrix material (16) on a total solids basis.
Abstract:
The present invention provides an at least partially coated fiber strand comprising a plurality of fibers, the coating comprising an organic component and lamellar particles having a thermal conductivity of at least 1 Watt per meter K at a temperature of 300K. The present invention also provides an at least partially coated fiber strand comprising a plurality of fibers, the coating comprising an organic component and non-hydratable, lamellar particles. The present invention further provides an at least partially coated fiber strand comprising a plurality of fibers having a resin compatible coating composition on at least a portion of a surface of at least one of said fibers, the resin compatible coating composition comprising: (a) a plurality of discrete particles formed from materials selected from non-heat expandable organic materials, inorganic polymeric materials, non-heat expandable composite materials and mixtures thereof, the particles having an average particle size sufficient to allow strand wet out; (b) at least one lubricious material different from said plurality of discrete particles; and (c) at least one film-forming material. The present invention also provides an at least partially coated fiber strand comprising a plurality of glass fibers having a resin compatible coating composition on at least a portion of a surface of at least one of said glass fibers, the resin compatible coating composition comprising: (a) a plurality of lamellar, inorganic particles having a Mohs' hardness value which does not exceed the Mohs' hardness value of said glass fibers; and (b) at least one polymeric material. The present invention further provides an at least partially coated fiber strand comprising a plurality of glass fibers having a resin compatible coating composition on at least a portion of a surface of at least one of said glass fibers, the resin compatible coating composition comprising: (a) a plurality of hollow, non-heat expandable organic particles; and (b) at least one lubricious material different from the at least one hollow organic particle.
Abstract:
The present invention provides a method of forming unidirectional laminate prepreg, comprising the steps of: providing a support table; advancing a plurality of strands oriented generally parallel to each other along at least a portion of the table; positioning a removable carrier material between the strands and the table to support and move with the strands along at least a portion of the table; coating at least a portion of the strands with a resin matrix material to form a pre-cured prepreg; establishing a uniform thickness for the pre-cured prepreg; at least partially curing the matrix material of the pre-cured prepeg to form an at least partially cured prepreg; and accumulating the at least partially cured prepreg. In one nonlimiting embodiment of the invention, the strands comprise a plurality of glass fibers, the carrier material is plastic, the removing step includes the step of positioning an edge of a doctor blade in contact with an upper surface of the pre-cured prepreg to establish the thickness of the pre-cure prepreg, and the at least partially curing step includes the step of passing the pre-cured prepreg through at least one curing and drying oven.
Abstract:
A flexible circuit includes a flexible non-conductive substrate (12) having a first surface and a second surface. A first electrically conductive trace (18) is provided on the first surface and a second electrically conductive trace (20) is provided on the second surface. A passage (22) extends through the substrate from an end of the first trace to an end of the second trace. The passage includes a beveled opening (26) of a first size formed in the first side and axially aligned with a second beveled opening (28) of the first size formed in the second side. The first and second openings are interconnected by an aperture axially aligned therewith and being of a second size less than the first size. An electrically conductive surface is provided on the passage for electrically interconnecting the first trace and the second trace.
Abstract:
A method comprising forming a substrate scaffold structure for use in the fabrication of a reversibly deformable circuit board, the substrate scaffold structure comprising a predefined waveform topography onto which one or more scaffold-conforming thin film layers can be deposited for use in forming electronic circuit elements of the reversibly deformable circuit board, the waveform topography of the substrate scaffold structure predefined to facilitate operational reversible deformation of the circuit board.