Abstract:
A process for manufacturing a 3-dimensional circuit board by electrophoretic deposition whereby a) providing the board with a conductive surface and b) applying a photoresist by electrophoretic deposition.
Abstract:
The invention discloses the use of an additive for acid copper plating bath which is chosen based on criteria of creating a shift in the charge transfer overpotential of the bath; or alternatively, creating a differential overpotential between the surface of a high aspect ratio circuit board and the recesses of such boards. The additive may be a single or multi-component additive.
Abstract:
A process for applying a pinhole free organic coating on a conductive substrate during an electrodeposition process. The elimination of pinhole defects is accomplished by use of a vibrating device interfaced with the equipment which dislodges gas bubbles adhering to the surface of the substrate during the electrodeposition process.
Abstract:
It has been discovered that both water soluble or partially water soluble and water insoluble agents lower the operating temperature of electrodepositable photoresist compositions and substantially increase both lifetime stability and temperature stability of the bath. These additives, because of their low volatility and their partition coefficients, essentially remain in the emulsion system and are removed upon codeposition with the photoresist where they act to improve film quality and control thickness.
Abstract:
The present invention is directed to a method for the formation and dry development of photoresists treated only in a thin layer ( i.e. , approx. 2000 Angstroms thick) so as to be treated with an organometallic material. Treatment of this thin layer of the resist formulation in the process of the present invention is preferably accomplished by the vapor phase exposure of the resist formulation to an organometallic material such as a silylating compound capable of reacting with the resist formulation. The resist formulation also contains a photoacid generator, capable of releasing an acid which either causes the hydrolysis of the exposed portions of the resist that were created with organometallic vapor, or prevents the reaction of the organometallic vapor with the exposed portion of the resist.
Abstract:
A fitting (10) for connecting a drum (12) containing a fluid product to a pipeline (14) leading to a place of use without introducing contaminant.
Abstract:
Both positive and negative acting photoresist compositions are provided which contain one or more silylated poly(vinyl)phenol polymers and at least one sensitizer which forms an acid upon irradiation. The anion of such acids has an affinity for silicon.
Abstract:
A catalytic adsorbate suspended in an aqueous solution comprising reduced catalytic metal on an organic suspending agent where the reduced catalytic metal has a maximum dimension not exceeding 500 angstroms and the organic suspending agent is one capable of complexing with ions of the catalytic metal. The catalytic adsorbate is useful for the electroless metal deposition of substrates that are non-catalytic to electroless metal deposition.
Abstract:
Apparatus for regulating the concentration of plating solution (20) components in a plating bath comprising a sensing device (22) suspended in the bath responsive to the concentration of one or more plating components of the plating solution and capable of generating a signal and a pump for supplying replenisher solution to the bath, maintaining the concentration of components of the plating solution substantially constant during use of the plating bath.