Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method that is inexpensive and environmentally friendly in forming a copper layer on a substrate. SOLUTION: A method and an apparatus for producing a copper layer on a substrate in a flat panel display manufacturing process are provided, where the copper is electrodelessly deposited on a substrate to form a copper interconnection layer. A copper solution containing CuSO 4 5H 2 O as a copper source, potassium sodium tartrate 4H 2 O or trisodium citrate as a complexing agent, glyoxylate, glyoxylic acid or sodium phosphate as a reducing agent, a sulfur organic compound as a stabilizing agent, and a pH adjusting agent, is used to from the copper interconnection layer on the substrate. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
Some novel features pertain to a substrate that includes a first dielectric layer, a first interconnect, a first cavity, and a first electroless metal layer. The first dielectric layer includes a first surface and a second surface. The first interconnect is on the first surface of the substrate layer. The first cavity traverses the first surface of the first dielectric layer. The first electroless metal layer is formed at least partially in the first cavity. The first electroless metal layer defines a second interconnect embedded in the first dielectric layer. In some implementations, the substrate further includes a core layer. The core layer includes a first surface and a second surface. The first surface of the core layer is coupled to the second surface of the first dielectric layer. In some implementations, the substrate further includes a second dielectric layer.
Abstract:
Object: To provide a structure of a resistor on a wiring board, having a sufficient surface area within a small-occupied area. Means: A via hole (10) provided in an interlayer insulating layer (13) is covered by an Ni-P plating layer (14). The Ni-P plating layer (14) is in contact with an under layer cupper pattern (12) at the bottom of the via hole (10). Outside the via hole (10) the Ni-P plating layer (14) is in contact with an upper layer cupper pattern (15), reaching the surface of the interlayer insulating layer (13). The Ni-P plating layer (14) between contact portions (A) and (B) functions as a resistor.
Abstract:
The invention proposes a method of producing a feedthrough on a circuit board, the method calling for the circuit board first to be drilled, catalysed and the surface structured. The feedthrough is then built up by electro-deposition in such a way that electrical components can be mounted in the feedthrough. The metallization (7) is preferably carried out using nickel or nickel compounds so that no additional corrosion-protection measures are necessary. By coating connecting lands (2b) with gold or palladium, bonding can be carried out directly on the lands.
Abstract:
The present invention is directed to an improved method for metallizing polymer substrates, such as polyimides. The present invention comprises the steps of surface treating the polymer substrate with a plasma jet or corona discharge surface treatment, conditioning and etching the polymer substrate with an etching solution comprising a hydroxide and ionic palladium, activating the polymer substrate with ionic palladium, reducing the palladium on the polymer substrate, plating an electroless nickel layer onto the prepared polymer substrate, arid plating an electroless copper layer over the electroless nickel layer. The process of the invention provides an improved method for preparing the polymer substrate for subsequent electrolytic plating thereon.
Abstract:
A process is revealed whereby resistors can be manufactured integral with a printed circuit board by plating the resistors onto the insulative substrate. Uniformization of the insulative substrate through etching and oxidation of the plated resistor are discussed as techniques for improving the uniformity and consistency of the plated resistors. Trimming and baking are also disclosed as methods for adjusting and stabilizing the resistance of the plated resistors.
Abstract:
A method of forming circuit lines on a substrate by applying a roughened conductive metal layer using a copper foil carrier. The copper foil is etched away, leaving the roughened conductive metal embedded in the surface of the substrate. The conductive metal may be treated to remove an oxide layer. A photoresist may also be applied over the treated conductive metal layer to define a fine line circuit pattern. The photoresist defining the fine line circuit pattern is then removed to expose trenches in accordance with the desired circuit pattern. Copper is applied into the trenches over the exposed conductive metal, and the remaining photoresist, and conductive metal underlying the remaining photoresist, is removed to finish the fine line circuit pattern.