A transparent conductor is provided, including a visible light transparent substrate and metal traces disposed on the substrate, and a layer of a second metal deposited on at least a portion of the metal traces. The transparent conductor further includes a layer of a second metal, which conforms to the surface structure of the metal traces on which it is deposited. Optionally, the transparent conductor also includes a coating layer disposed on a portion of the metal traces and the substrate surface. The coating layer includes a polymer prepared from a polymerizable composition containing at least one ionic liquid monomer. A method of forming a transparent conductor is also provided, including obtaining a visible light transparent substrate having metal traces disposed on the substrate and applying a coating composition on a portion of the metal traces and substrate. The coating composition contains at least one noble metal salt and at least one polymerizable ionic liquid monomer.

A method of establishing conductive connections is disclosed. The method includes providing an integrated circuit die having a plurality of solder balls each of which has an oxide layer on an outer surface of the solder ball. The method also includes performing a heating process to heat at least the solder balls and applying a force causing each of a plurality of piercing bond structures on a substrate to pierce one of the solder balls and its associated oxide layer to thereby establish a conductive connection between the solder ball and the piercing bond structure.

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.

The present invention relates to a process for producing one or more electrical contacts on a component, comprising (a) applying one or more coatings on the component, where at least one of the coatings is a coating of an electrically conductive material, (b) applying a self-passivating metal or semiconductor and/or a dielectric material on the coated component, (c) structuring the passivating coating by laser treatment or etching, (d) contacting the structured coating with an electroplating bath, (e) etching the regions not covered with the galvanically deposited metal.

A manufacturing method for circuit board on copper ceramic substrate comprises stamping a copper sheet into a copper circuit board in a shape matching a ceramic substrate, fitting the copper circuit board to the ceramic substrate and sintering the copper circuit board and the ceramic substrate together by direct bonding copper.

The present invention relates to methods of treating metal surfaces to enhance adhesion or binding to substrates, and devices formed thereby. In some embodiments of the present invention, methods of achieving improved bonding strength without roughening the topography of a metal surface are provided. The metal surface obtained by this method provides strong bonding to resin layers. The bonding interface between the treated metal and the resin layer exhibits resistance to heat, moisture, and chemicals involved in post-lamination process steps, and therefore can suitably be used in the production of PCB's. Methods according to some embodiments of the present invention are especially useful in the fabrication of high density multilayer PCB's, in particular for PCB's having circuits with line/spacing of equal to and less than 10 microns. Methods according to other embodiments of the present invention are particularly useful in the coating of metal surfaces in a wide variety of applications.

The present invention relates to a method for increasing adhesion strength between a surface of a copper, a copper alloy or a copper oxide and a surface of an organic material.

A method for making conformal non-planar multi-layer circuitry is described. The method can include providing a substrate having a non-planar surface and depositing a first conformal dielectric layer on the substrate, the first conformal dielectric layer conforming to the non-planar surface of the substrate and having a non-planar surface. The method can also include applying a first conformal circuitry layer on the first conformal dielectric layer. The method can include depositing a second conformal dielectric layer on the first conformal circuitry layer, the second conformal dielectric layer conforming to a non-planar surface of the first conformal circuitry layer, and applying a second conformal circuitry layer on the second conformal dielectric layer. Successive layers can be sequentially deposited.

The present application provides a conductive structure body precursor, a conductive structure body and a method for manufacturing the same.

A printed circuit board includes a first insulating layer, a first metal layer disposed on the first insulating layer and including a first oxidation region on a side surface thereof, and a second metal layer disposed on the first metal layer. A method of manufacturing a printed circuit board includes forming a first metal layer on a first insulating layer, forming a second metal layer on a portion of the first metal layer, oxidizing another portion of the first metal layer to form a first oxidation region, and removing at least a portion of the first oxidation region.