A circuit assembly may include a substrate and a pattern of contact points formed from deformable conductive material supported by the substrate. The assembly may further include an electric component supported by the substrate and having terminals arranged in a pattern corresponding to the pattern of contacts points. The one or more of the terminals of the electric component may contact one or more of the corresponding contact points to form one or more electrical connections between the electric component and the contact points.

A manufacturing method of a circuit board includes: performing a first printing process to form a first insulating layer having a first circuit depressed pattern; performing a second printing process to form a first circuit layer in the first circuit depressed pattern; checking whether a real position of the first circuit layer is diverged from a predetermined position; determining whether the shift level of the position of the first circuit layer is more than a predetermined level; performing the first printing process to form the second insulating layer, wherein when the shift level is more than the predetermined level and the thickness of a second insulating layer to be formed on the first insulating layer is not greater than a tolerance thickness, the second insulating layer has a hole at least partially overlapping the real position; and performing the second printing process to form a conductive plug in the hole.

An apparatus is provided which comprises: a woven fiber layer, a first resin layer on a first surface of the woven fiber layer, a second resin layer on a second surface of the woven fiber layer, the second surface opposite the first surface, and the first and the second resin layers comprising cured resin, a third resin layer on the first resin layer, and a fourth resin layer on the second resin layer, the third and the fourth resin layers comprising an uncured resin, and wherein the fourth resin layer has a thickness greater than a thickness of the third resin layer. Other embodiments are also disclosed and claimed.

A circuit board includes a substrate, a first dielectric layer, an adhesive layer, a second dielectric layer, and a first conductive line. The first dielectric layer is disposed on the substrate. The adhesive layer is bonded to the first dielectric layer and has a top surface opposite to the substrate. The second dielectric layer is disposed on the adhesive layer and has at least one first through hole. The first conductive line is located in the first through hole of the second dielectric layer and is in contact with the top surface of the adhesive layer.

The present disclosure relates to a printed circuit board including a first insulating layer including a non-photosensitive insulating material, a first wiring layer embedded in the first insulating layer, where an upper surface thereof is exposed from the upper surface of the first insulating layer, includes a first metal layer, and a second metal layer covering at least a portion of each of the lower surface and side surface of the first metal layer with a thickness thinner than the first metal layer, and a second insulating layer disposed under the lower surface of the first insulating layer to cover at least a portion of a lower surface of the first wiring layer, and including the non-photosensitive insulating material.

A method for manufacturing a printed circuit board, comprising in order steps (i) providing a non-conductive substrate having on a surface copper circuitry with a copper surface, wherein said surface is chemically treated by (a) oxidation and subsequent reduction reaction and/or (b) organic compound attached to said surface, a permanent, non-conductive, not fully polymerized cover layer covering at least partially said surface, (ii) thermally treating the substrate with the cover layer at temperature from 140 C. to 250 C. in atmosphere containing molecular oxygen at 100000 ppm or less, based on the total volume of the atmosphere, wherein a substrate with a permanent, non-conductive cover layer is obtained, with the provisos that (ii) is after (i) but before any metal or metal alloy is deposited onto the cover layer, and that in (ii) the cover layer is fully polymerized in one thermal treating step, if the cover layer is a solder mask.

A manufacturing method of a circuit board and a stamp are provided. The method includes: forming a circuit pattern and a dielectric layer on a dielectric substrate; forming a conductive via in the dielectric layer; forming a thermal-sensitive adhesive layer on the dielectric layer; forming a photoresist material layer on the thermal-sensitive adhesive layer; imprinting the photoresist material layer using a stamp, wherein a first conductive layer is disposed on the surface of the pressing side of the stamp, a second conductive layer is disposed on the surface of the other portions; applying a current to the stamp; removing the stamp and the photoresist material layer and the thermal-sensitive adhesive layer below the pressing side to form a patterned photoresist layer and thermal-sensitive adhesive layer; forming a patterned metal layer on the region exposed by the patterned photoresist layer; removing the patterned photoresist layer and thermal-sensitive adhesive layer.

A manufacturing method of a circuit board including the following steps is provided. A carrier substrate is provided. A patterned photoresist layer is formed on the carrier substrate. An adhesive layer is formed on the top surface of the patterned photoresist layer. A dielectric substrate is provided. A circuit pattern and a dielectric layer covering the circuit pattern are formed on the dielectric substrate, wherein the dielectric layer has an opening exposing a portion of the circuit pattern. The adhesive layer is adhered to the dielectric layer in a direction that the adhesive layer faces of the dielectric layer. The carrier substrate is removed. A patterned metal layer is formed on a region exposed by the patterned photoresist layer. The patterned photoresist layer is removed. The adhesive layer is removed.

To provide a manufacturing method capable of manufacturing a high density semiconductor device excellent in transmission between chips at a favorable yield and at low cost. A method for manufacturing a semiconductor device includes an insulating layer forming step of forming an insulating layer 3 having a trench 4 above a substrate 1, a copper layer forming step of forming a copper layer 5a on the insulating layer 3 so as to fill the trench 4, and a removing step of removing the copper layer 5a on the insulating layer 3 by a fly cutting method so as to retain a copper layer part in the trench 4.

A printed wiring board includes: a core substrate having a core layer, conductor layers on the core layer, and through-hole conductors; a first build-up layer including an insulating layer on the substrate, an inner side conductor layer on the insulating layer, an outermost insulating layer on the inner side conductor layer, and an outermost conductor layer on the outermost insulating layer; and a second build-up layer including an insulating layer on the substrate, an inner side conductor layer on the insulating layer, an outermost insulating layer on the inner side conductor layer, and an outermost conductor layer on the outermost insulating layer. Each of the conductor layers, inner side conductor layers, and outermost conductor layers has a metal foil, a seed layer and an electrolytic plating film, and that each inner side conductor layer has the smallest thickness among the conductor layers, inner side conductor layers and outermost conductor layers.