Abstract:
An apparatus for the electrolytic treatment of the product L using a treatment agent is used to make the treatment of a plate-shaped product more uniform. This apparatus includes: devices for retaining 40, 42 the product L in the apparatus, one or a plurality of flow devices 10, which each include at least one nozzle 15 and are disposed situated opposite the product L, one or a plurality of counter electrodes 30, which are inert relative to the treatment agent and are disposed parallel to at least one treatment surface, means for generating a relative movement 44 between the product L, on the one side, and the flow devices 10 and/or the counter electrodes 30, on the other side, in at least one direction parallel to a treatment surface. The product L can be immersed into the treatment agent during the treatment.
Abstract:
The invention relates to a polyvinylammonium compound, to a method of manufacturing said compound, to an aqueous acidic solution containing at least said polyvinylammonium compound for electrolytically depositing a copper deposit as well as to a method of electrolytically depositing a copper deposit using said aqueous acidic solution, said polyvinylammonium compound corresponding to the general chemical formula (I): as well as to polyvinylammonium compounds of the general chemical formula (I), wherein one of the monomer units or both having indices I and m are present in the neutral form.
Abstract:
정당한 노력으로 전자 회로 어셈블리 상에 매우 작은 라인 및 공간(≤25㎛, 바람직하게는 ≤10㎛ 및 5㎛만큼 작은)을 생성하기 위해, a) 유전체층을 제공하는 단계; b) 트렌치 및 부품 리세스를 포함하는 그룹에서 선택된 층에 하나 이상의 구성요소를 제공하기 위해 레이저 삭마에 의해 상기 유전체층에 3차원 구조를 형성하는 단계; c) 상기 구성요소들에 노출된 상기 유전체층의 표면 영역의 적어도 일부에, 도전성 입자나 내재 도전성 폴리머 중 적어도 하나를 상기 표면 상에 함유하거나 형성하는 유체를 도포하는 단계; 및 d) 상기 표면 영역의 적어도 일부를 금속화하는 단계를 포함하는 방법이 이용된다.
Abstract:
A device and a method for chemically or electrolytically treating work pieces (1) are proposed in an effort to avoid irregular contours of finest conductive structures, pads and lands as well as bridges (shorts) on the one side or breaks on printed circuit boards on the other side. The device comprises processing tanks (2) for treating the work pieces and a conveyor system for the transport thereof. The conveyor system comprises at least one transport carriage (18), at least one holding element (14, 25) and at least one connection means (12, 13, 35) between the transport carriage(s) and the holding element(s). The processing tanks are adjoined with a clean room zone (3). The work pieces are conveyed through the clean room zone using the conveyor system. ® KIPO & WIPO 2007
Abstract:
In one embodiment, this invention relates to an aqueous acid iron phosphorus bath which comprises (A) at least one compound from which iron can be electrolytically deposited, (B) hypophosphite ion, and (C) a sulfur-containing compound selected from sulfoalkylated polyethylene imines, sulfonated safranin dye, and mercapto aliphatic sulfonic acids or alkali metal salts thereof. Optionally, the aqueous acidic iron phosphorus electroplating bath of the invention also may comprise aluminum irons. The alloys which are deposited on the substrates by the process of the present invention are characterized by the presence of iron, phosphorus and sulfur.
Abstract:
A method of manufacturing a circuit carrier and the use of said method are proposed, said method comprising, after providing a printed circuit board (a), coating the circuit board on at least one side thereof with a dielectric (b), structuring the dielectric for producing trenches and vias therein using laser ablation (c) are performed. Next, a primer layer is deposited onto the dielectric, either onto the entire surface thereof or into the produced trenches and vias only (d). A metal layer is deposited onto the primer layer, with the trenches and vias being completely filled with metal for forming conductor structures therein (e). Finally, the excess metal and the primer layer are removed until the dielectric is exposed if the primer layer was deposited onto the entire surface thereof, with the conductor structures remaining intact (f).
Abstract:
Process to improve adhesion of dielectric materials to a metal layer, including providing an unpatterned metal layer having a first major surface; micro-roughening the first major surface to form a micro-roughened surface; and etching the metal layer to form a circuit pattern in the metal layer, in which the micro- roughening is carried out prior to the etching.
Abstract:
The present invention provides a non-cyanide aqueous acidic immersion plating solution having a pH of from about 3.5 to about 6.5 and comprising zinc ions, nickel ions and/or cobalt iron ions, and fluoride ions. In one embodiment the immersion plating solutions of the invention also contain at least one inhibitor containing one or more nitrogen atoms, sulfur atoms, or both nitrogen and sulfur atoms. The present invention also relates to methods for depositing zinc alloy protective coatings on aluminum and aluminum alloy substrates comprising immersing the aluminum or aluminum alloy substrate in the non-cyanide acidic immersion plating solutions of the invention. Optionally, the zinc alloy coated aluminum or aluminum alloy substrate is plated using an electroless or electrolytic metal plating solution.
Abstract:
The invention provides a process for filling mu-blind vias in the manufacture of printed circuit boards, which process comprises the following steps: (i) providing a bath electrolyte for galvanic plating with metallic coatings comprising a copper metal salt and optionally organic additives, (ii) operating the bath with direct current density of 0.5 to 10 A/dm2, or current pulses at an effective current density of 0.5 to A/dm2, (iii) withdrawing part of the electrolyte from the galvanic bath, (iv) adding an oxidizing agent to the part of the electrolyte which has been withdrawn, (v) optionally irradiating the withdrawn electrolyte with UV light and (vi) recycling the withdrawn part to the galvanic bath and replacing the organic additives destroyed by the oxidation treatment.
Abstract:
A problem during electrolytic treatment of printed circuit boards having a very thin basic metallization is that the treatment yields irregular results in various regions on the surface of the printed circuit board. In overcoming this problem the invention provides a device for electrolytically treating an at least superficially electrically conducting work piece having at least two substantially opposing side edges. The device comprises current supply devices for the work piece, said current supply devices each comprising contact strips located on the opposing side edges which are capable of electrically contacting the work piece at the substantially opposing side edges.