A flexible circuitry layer may comprise a conductive mesh including a circuitry trace; and an interfacing component, comprising: a flexible substrate; a terminal electrically connected to the circuitry trace; and a connector configured to be detachably connected to an external device.

A wiring substrate includes a substrate containing a resin as a main component and including a mixed layer in which the resin and a catalyst are mixed together; and a metal wire disposed to cover the mixed layer and being in contact with the catalyst. The wiring substrate with such a configuration can increase the adhesion of the metal wire to the substrate.

A wiring substrate at which a metal wire is formed includes a substrate containing a resin as a main component and an organic substance having a hydroxyl group; and a metal plating layer constituting the metal wire. A formation portion of the metal wire at one surface of the substrate is rougher than a non-formation portion of the metal wire at the one surface of the substrate, and has the organic substance in a state of being embedded in the resin, and a catalyst. The wiring substrate with such a configuration can increase the adhesion of the metal wire to the substrate.

A method of forming a metallic pattern on a substrate is provided. The method includes applying onto a metallic surface, a chemically surface-activating solution having an activating agent that chemically activates the metallic surface; non-impact printing an etch-resist ink on the activated surface to produce an etch resist mask according to a predetermined pattern, wherein at least one ink component within the etch-resist ink undergoes a chemical reaction with the activated metallic surface to immobilize droplets of the etch-resist ink when hitting the activated surface; performing an etching process to remove unmasked metallic portions that are not covered with the etch resist mask; and removing the etch-resist mask.

A flexible circuitry layer may comprise a conductive mesh including a circuitry trace; and an interfacing component, comprising: a flexible substrate; a terminal electrically connected to the circuitry trace; and a connector configured to be detachably connected to an external device.

A composite article includes a conductive layer on at least a portion of a flexible substrate, wherein the conductive layer has a conductive surface. A patterned layer of a low surface energy material is on a first region of the conductive surface. An overcoat layer free of conductive particulates is on a first portion of a second region of the conductive surface unoccupied by the patterned layer. A via is in a second portion of the second region of the conductive surface between an edge of the patterned layer of the low surface energy material and the overcoat layer. A conductive material is in the via to provide an electrical connection to the conductive surface.

A flexible circuitry layer may comprise a conductive mesh including a circuitry trace; and an interfacing component, comprising: a flexible substrate; a terminal electrically connected to the circuitry trace; and a connector configured to be detachably connected to an external device.

Provided is a temperature sensor including a carrier substrate; a sensor unit positioned on the carrier substrate and including a base layer and an electric conductive layer, the base layer having surface hygroscopicity, and the electric conductive layer being on an external surface of the base layer; a pad unit electrically connected to opposite ends of the sensor unit; and a cover unit positioned on the sensor unit and configured to cover the sensor unit.

A manufacturing method of a multilayered board, includes: a dot pattern forming process that forms a dot pattern comprising at least one hemispherical micro-lens shape by repeating a process of forming one hemispherical micro-lens shape by jetting one droplet for forming the dot pattern in an inkjet manner; and a stack pattern forming process that forms a stack pattern having a thickness less than that of the micro-lens by jetting a droplet for forming the stack pattern on a predetermined area around the dot pattern in the inkjet manner.

A wiring board manufacturing method and a wiring board in which a pattern can be simply and easily formed even when using a coating composition having a high surface tension are provided. The method includes a transferring step of bringing a resin composition containing a first compound inducing a low surface free energy and a second compound inducing a surface free energy which is higher than that of the first compound into contact with a master on which a desired surface free energy difference pattern is formed and curing the resin composition to form a base material to which the surface free energy difference pattern is transferred; and a conductor pattern forming step of applying a conductive coating composition onto a pattern transfer surface of the base material to form a conductor pattern, the base material having a pattern of a high surface free energy region and a low surface free energy region, and the high surface free energy region having a surface free energy of more than 62 mJ/m.sup.2.