Abstract:
The present invention provides a carrier-attached copper foil, wherein an ultrathin copper foil is not peeled from the carrier prior to the lamination to an insulating substrate, but can be peeled from the carrier after the lamination to the insulating substrate. A carrier-attached copper foil comprising a copper foil carrier, an intermediate layer laminated on the copper foil carrier, and an ultrathin copper layer laminated on the intermediate layer, wherein the intermediate foil is configured with a Ni layer in contact with an interface of the copper foil carrier and a Cr layer in contact with an interface of the ultrathin copper layer, said Ni layer containing 1,000-40,000 μg/dm2 of Ni and said Cr layer containing 10-100 μg/dm2 of Cr is provided.
Abstract:
Barrier layers for use in electrical applications. In some embodiments the barrier layer is a laminated barrier layer. In some embodiments the barrier layer includes a graded barrier layer.
Abstract:
A composition for forming transition vias and transition line conductors is disclosed for minimizing interface effects at electrical connections between dissimilar metal compositions. The composition has (a) inorganic components selected from the group consisting of (i) 20-45 wt % gold and 80-55 wt % silver and (ii) 100 wt % silver-gold solid solution alloys, and (b) an organic medium. The composition may also contain (c) 1-5 wt %, based upon the weight of the composition, of oxides or mixed oxides of metals selected from the group consisting of Cu, Co, Mg and Al and/or high viscosity glasses mainly containing refractory oxides. The composition may be used as a multi-layer composition in a via fill. Multi-layer circuits such as LTCC circuits and devices may also be formed using the composition for forming transition vias and transition line conductors.
Abstract:
본 발명은 각종 고분자 수지 제품 또는 수지층 상에 매우 단순화된 공정으로 미세한 도전성 패턴을 형성할 수 있게 하는 도전성 패턴 형성용 조성물, 이를 사용한 도전성 패턴 형성 방법과, 도전성 패턴을 갖는 수지 구조체에 관한 것이다. 상기 도전성 패턴 형성용 조성물은 고분자 수지; 및 제 1 금속, 제 2 금속 및 제 3 금속을 포함하는 비도전성 금속 화합물로서, 상기 제 1 금속, 제 2 금속 및 제 3 금속 중 2종의 금속을 포함하고 모서리를 공유하는 8면체들이 서로 2차원적으로 연결된 구조를 갖는 복수의 제 1 층(edge-shared octahedral layer)과, 상기 제 1 층과 다른 종류의 금속을 포함하고 서로 인접하는 제 1 층 사이에 배열된 제 2 층을 포함하는 입체 구조를 갖는 비도전성 금속 화합물을 포함하고, 전자기파 조사에 의해, 상기 비도전성 금속 화합물로부터, 상기 제 1 금속, 제 2 금속 또는 제 3 금속이나 그 이온을 포함하는 금속핵이 형성되는 것이다.
Abstract:
Electrically conductive films and methods for making them. The films include at least two patterns, the first of which, alone, would be visible, but with the addition of one or more other patterns, becomes invisible to the unaided human eye. These films are useful in applications where invisible patterning is desirable, such as, for example, devices employing touch screens.