Abstract:
The invention provides processes for the manufacture of conductive transparent films and electronic or optoelectronic devices comprising same.
Abstract:
An electronic circuit board manufacturing method according to the present disclosure is a method of manufacturing an electronic circuit board including a substrate and an electronic circuit having a predetermined pattern, the electronic circuit being fixed on the substrate and being made from a nanoink composition containing metal particles. The method includes the steps of: causing a printing plate to hold a nanoink composition containing metal particles, the printing plate including an ink holding part formed on a surface thereof and having a predetermined pattern; bringing a surface of the substrate into intimate contact with the printing plate to transfer the nanoink composition held on the ink holding part onto the substrate (workpiece W); and drying the transferred nanoink composition in an environment of 40°C or below in the atmosphere to fix the nanoink composition after the transfer step, thereby forming an electronic circuit having a predetermined pattern. This method is capable of forming a layer made from a uniform nanoink composition rapidly and efficiently at ordinary temperatures and under atmospheric pressure.
Abstract:
The invention relates to a laser printing method comprising the following steps: (a) providing a receiving substrate (4); (b) providing a target substrate (5) including a transparent substrate (50), one face of which has a coating (51) formed by a solid metal film; (c) locally irradiating the film (51) through the transparent substrate (50) using a first laser (8) in order to reach the melting point of the metal in a target zone of the film that is in liquid form; (d) irradiating the liquid film through the transparent substrate using a second laser on the target zone defined in step (c), in order to form a liquid jet in the target zone and to eject same from the substrate in the form of molten metal; (e) depositing a drop of molten metal on a defined receiving zone of the receiving substrate, said drop solidifying as it cools.
Abstract:
A method for waterproofing a device and the resulting device are provided. The device includes a printed circuit board assembly (PCBA), which includes a printed circuit board, and at least one electronic component disposed on the printed circuit board. A waterproof coating such as a polymer coating is disposed on or in contact with at least one portion of the at least one electronic component. A nanofilm is disposed on the PCBA. The nanofilm includes an inner coating and an outer coating. The inner coating is disposed on the printed circuit board or in contact with the waterproof coating. The inner coating comprises metal oxide nanoparticles having a particle diameter in a range of about 5 nm to about 100 nm. The outer coating in contact with the inner coating, and comprises silicon dioxide nanoparticles having a particle diameter in a range of 0.1 nm to 10 nm.
Abstract:
An electronic circuit board manufacturing method according to the present disclosure is a method of manufacturing an electronic circuit board including a substrate and an electronic circuit having a predetermined pattern, the electronic circuit being fixed on the substrate and being made from a nanoink composition containing metal particles. The method includes the steps of: causing a printing plate to hold a nanoink composition containing metal particles, the printing plate including an ink holding part formed on a surface thereof and having a predetermined pattern; bringing a surface of the substrate into intimate contact with the printing plate to transfer the nanoink composition held on the ink holding part onto the substrate (workpiece W); and drying the transferred nanoink composition in an environment of 40°C or below in the atmosphere to fix the nanoink composition after the transfer step, thereby forming an electronic circuit having a predetermined pattern. This method is capable of forming a layer made from a uniform nanoink composition rapidly and efficiently at ordinary temperatures and under atmospheric pressure.
Abstract:
A flake-less molecular ink suitable for printing (e.g. screen printing) conductive traces on a substrate has 30-60 wt % of a C8-C12 silver carboxylate or 5-75 wt % of bis(2-ethyl-1-hexylamine) copper (II) formate, bis(octylamine) copper (II) formate or tris(octylamine) copper (II) formate, 0.1-10 wt % of a polymeric binder (e.g. ethyl cellulose) and balance of at least one organic solvent. Conductive traces formed with the molecular ink are thinner, have lower resistivity, have greater adhesion to a substrate than metal flake inks, have better print resolution and are up to 8 times less rough than metal flake inks. In addition, the shear force required to remove light emitting diodes bonded to the traces using Loctite 3880 is at least 1.3 times stronger than for commercially available flake-based inks.
Abstract:
The present invention provides a silver particle coating composition that develops excellent conductivity by low-temperature and short-time calcining, and preferably achieves excellent adhesion between a silver coating film and a substrate. A silver particle coating composition comprising: silver nano-particles (N) whose surfaces are coated with a protective agent containing an aliphatic hydrocarbon amine; silver microparticles (M); and a dispersion solvent. The silver particle coating composition, further comprising a binder resin. The silver particle coating composition, further comprising a curable monomer and a polymerization initiator. The dispersion solvent comprises at least a glycol ester-based solvent. A silver coating composition that is suitable for intaglio offset printing.
Abstract:
A solution of metal ink is mixed and then printed or dispensed onto the substrate using the dispenser. The film then is dried to eliminate water or solvents. In some cases, a thermal curing step can be introduced subsequent to dispensing the film and prior to the photo-curing step. The substrate and deposited film can be cured using an oven or by placing the substrate on the surface of a heater, such as a hot plate. Following the drying and/or thermal curing step, a laser beam or focused light from the light source is directed onto the surface of the film in a process known as direct writing. The light serves to photo-cure the film such that it has low resistivity.