A circuit board includes at least one prepreg including a fiber layer, the fiber layer being woven with a plurality of first fibers arranged in a first direction and a plurality of second fibers arranged in a second direction that is substantially perpendicular to the first direction, and a circuit layer on at least one of opposite surfaces of the at least one prepreg. The at least one prepreg has a length in the first direction greater than a length in the second direction, each of the plurality of first fibers is formed of or includes a filling yarn, and each of the plurality of second fibers is formed of or includes a warp yarn.

A circuit board includes a baseboard, a first conductive circuit layer, a second conductive circuit layer, at least one through hole, and a number of conductive lines. The first conductive circuit layer includes a number of first conductive circuit lines formed on a first side of the baseboard. The second conductive circuit layer includes a number of second conductive circuit lines formed on a second side of the baseboard. The through hole is defined through the first conductive circuit layer, the baseboard, and the second conductive circuit layer. The number of conductive lines are formed in an inner wall of the through hole and spaced apart around the through hole. Each conductive line electrically couples one of the first conductive circuit lines to a corresponding one of the second conductive circuit lines.

The present specification relates to a manufacturing method of a circuit board. More particularly, the present specification relates to a circuit board and a manufacturing method of an electronic device including the same.

A flexible electronics assembly includes a single-piece substrate having two regions of rigidity separated by a localized region of flexibility. The localized region of flexibility has a lower rigidity than the two regions of rigidity. The two regions of rigidity are angularly deflectable from a planar configuration of the single-piece substrate to a non-planar configuration of the single-piece substrate by hinging action of the localized region of flexibility. At least one electronic component is mounted on at least one of the two regions of rigidity.

Embodiments are directed to a method of manufacturing the printed circuit board. The PCB is a multi-layer component, including a dielectric material and an intermediate or second layer adjacently positioned with respect to the dielectric material. The intermediate layer or second layer is comprised of a conductor and fiberglass strands, with the fiberglass strands having an associated orientation. When assembled, the fiberglass and the conductor having a matching orientation and separation distance from a source to a destination.

An organic substrate includes a core layer including organic materials; a first buildup layer on a top surface of the core layer; a second buildup layer on a bottom surface of the core layer; and at least one correction layer formed on at least one part of surfaces of the first buildup layer and the second buildup layer, wherein the correction layer has a thickness which has been calculated using properties of constituent materials including the coefficient of thermal expansion (CTE) and the Young's modulus of the core layer, and CTEs and the Young's modulus of the first and the second buildup layers for reducing warpage of the organic substrate.

A process of in-situ detection of hollow fiber formation includes immersing a plurality of individual glass fibers in an index-matching material. The index-matching material has a first refractive index that substantially matches a second refractive index of the glass fibers. The process also includes exposing the individual glass fibers to a light source during immersion in the index-matching material. The process further includes utilizing one or more optical components to collect optical data for the individual glass fibers during immersion in the index-matching material. The process also includes determining, based on the optical data, that a particular glass fiber of the plurality of individual glass fibers includes a hollow fiber.

The present invention relates to a photocurable composition for imprint in a condensable gas atmosphere. The composition at least includes a polymerizable compound component (A) and photopolymerization initiator component (B) and satisfies the Requirement (1): a value E.sub.CG of greater than or equal to 2.30 GPa, where E.sub.CG denotes the reduced modulus (GPa) of a photocured film prepared by exposing the photocurable composition for imprint to light at an exposure dose of 200 mJ/cm.sup.2 in an atmosphere containing a condensable gas in a concentration of 90% by volume or more.

A resin composition, comprising: (a) a resin of formula (I): ##STR00001## (b) triallyl isocyanurate (TAIC) as a first hardener; and (c) a hardening promoter, which is a metallic salt compound of formula (II): ##STR00002## wherein, R1, R2, R3, R4, A1, A2, M.sup.a+, b, and n are as defined in the specification, and wherein the weight ratio of the resin (a) to the first hardener (b) is about 10:1 to about 1:1, and the content of the hardening promoter (c) is about 0.1 wt % to less than 15 wt % based on the total weight of the resin (a) and the first hardener (b), and the weight ratio of the resin (a) to the total amount of the first hardener (b) and BMI is not lower than 1:1.

A ceramic and polymer composite including: a first continuous phase comprising a sintered porous ceramic having a solid volume of from 50 to 85 vol % and a porosity or a porous void space of from 50 to 15 vol %, based on the total volume of the composite; and a second continuous polymer phase situated in the porous void space of the sintered porous ceramic. Also disclosed is a composite article, a method of making the composite, and a method of using the composite.