Abstract:
High capacitance value capacitors are formed using bimetal foils (120, 130) of an aluminum layer (124, 134) attached to a copper layer (122, 132). The copper side of a bimetallic copper/aluminum foil or a monometallic aluminum foil is temporarily protected using aluminum or other materials, to form a sandwich. The exposed aluminum is treated to increase the surface area of the aluminum by at least one order of magnitude, while not attacking any portion of the protected metal. When the sandwich is separated, the treated bimetal foil (120 or 130) is formed into a capacitor, where the copper layer (122 or 132) is one electrode of the capacitor and the treated aluminum layer (124 and 324 or 134 and 334) is in intimate contact with a dielectric layer (540) of the capacitor.
Abstract:
Disclosed is an article comprising a polymer layer containing a plurality of integral polymer conduit channels that contain at least two layers with at least one comprising a conductive material and the other serving a function beyond protection.
Abstract:
Methods for roll-to-roll deposition of optically transparent and high conductivity metallic thin films are disclosed. In general, a method according to the present invention comprises: (1) providing a flexible plastic substrate; (2) depositing a multi-layered conductive metallic film on the flexible plastic substrate by a thin-film deposition technique to form a composite film; and (3) collecting the composite film in continuous rolls. Typically, the thin conductive metallic film is an InCeO-Ag-InCeO film. Typically, the thin-film deposition technique is DC magnetron sputtering. Another aspect of the invention is a composite film produced by a method according to the present invention. Still another aspect of the invention is a composite film comprising InCeO-Ag-InCeO film formed on a flexible plastic substrate, wherein the composite fillm has a combination of properties including: transmittance of at least 90% throughout the visible region; an electrical resistance of no greater than about 10 Ω/square; a root-mean-square roughness of no greater than about 2.5 nm; and an interlayer adhesion between the InCeO/Ag/InCeO metallic film and the remainder of the composite film that is sufficiently great to survive a 180° peel adhesion test.
Abstract:
A metallic layer (A) is formed on one side of a polymer film by dry−etching. A circuit is fabricated from the laminate by a semiconductor−additive method. Thus, a high−density printed wiring board excellent in shape of circuit wiring pattern, insulation between circuits, and adhesion with the base sheet is produced. Further an adhesive layer is formed on the other side of the polymer film of the laminate, thereby producing an interlayer adhesive film. The interlayer adhesive film is joined to an inner−layer circuit sheet, and thereafter the adhesive layer is fused or cured. In such a way, a multilayer printed wiring board is produced. An etchant for selectively etching a first metallic deposit is preferably used to produce a circuit board.
Abstract:
A multilayer printed wiring board excellent in fracture toughness, dielectric constant, adhesion, and machinability. The printed wiring board comprising a base sheet, an insulating resin layer provided on the base sheet, and a conductor circuit provided on the insulating resin layer is characterized in that the insulating resin layer is made of a polyolefin resin.