A method for manufacturing a multilayer circuit board includes: forming a first patterned conductive layer on a ceramic substrate, the first patterned conductive layer having a first circuit pattern and a first submount pattern; forming a second patterned conductive layer on the first patterned conductive layer, the second patterned conductive layer having a second circuit pattern and a second submount pattern; forming an insulating layer on the ceramic substrate; and forming a third patterned conductive layer on the insulating layer. The third patterned conductive layer having a third circuit pattern and a third submount pattern. The first, second and third submount patterns are stacked one above another.

To improve a substrate unit in which safety maintaining devices are mounted on a wiring substrate while suppressing manufacturing costs.

A substrate unit includes a wiring substrate, electronic components as safety maintaining devices arranged on the wiring substrate, plural metal components arranged on the wiring substrate at distances from the electronic components as the safety maintaining devices so as to satisfy a requirement for an intrinsically safe explosion-proof construction, and a resin film covering at least one of the plural metal components and the electronic components as the safety maintaining devices on the wiring substrate, in which the resin film has a thermal conductivity of at least 1.0 W/mk and a dielectric breakdown strength of at least 3.0 kV/mm.

A method for manufacturing a flexible transparent electrode includes: preparing a substrate made of a flexible and transparent material, a metal nanocolloidal solution and an electrohydrodynamic jet printing device; fixing the substrate at a position spaced apart from an injection nozzle of the electrohydrodynamic jet printing device at a predetermined interval in order to print a metal pattern on the substrate using the electrohydrodynamic jet printing device; applying AC voltage of a predetermined power to the substrate and the injection nozzle of the electrohydrodynamic jet printing device; printing the metal pattern on an upper side of the substrate by the metal nanocolloidal solution using the electrohydrodynamic jet printing device in a state where the AC voltage of the predetermined power is applied to the substrate and the injection nozzle; and sintering the metal pattern formed on the substrate.

A display panel including: a substrate; a plurality of first connecting wires in a first portion of the substrate and connected to a first flexible printed circuit board; a plurality of second connecting wires in a second portion of the substrate and connected to a second flexible printed circuit board, the second portion being adjacent to the first portion; first and second test pads provided between the first and second portions of the substrate, the first test pad being connected to an endmost first connecting wire adjacent to the second portion, the second test pad being connected to an endmost second connecting wire adjacent to the first portion; and an electrical circuit in which the endmost first and second connecting wires are included in different power supply nodes.

Disclosed is a white coating layer-formed touch screen panel. The coating layer includes a glass substrate, a white coating layers selectively formed on an edge portion of the glass substrate, a black color coating layer selectively formed on an edge portion, and a transparent conductive layer formed on the glass substrate including the edge portion.

A method for applying ink to a printed circuit board to form a pattern, the method may include flooding the printed circuit board with ink, such that the ink advances within edges of the pattern; freezing the ink before the ink exceeds the edges of the pattern; and vibrating the printed circuit board during a vibration period that at least partially overlaps at least one of the flooding and the freezing.

The disclosure relates to systems, methods and devices for mitigating warpage in printed circuit boards (PCBs) high-frequency connect PCBs (HFCPs), or additively manufactured electronics (AME) with surface mounted chip packages (SMT) during reflow processing for soldering the SMT to the PCB, HFCP, or AME. More specifically, the disclosure is directed to the fabrication of a surface-complementary dielectric mask, or reflow compression mask to substantially encapsulate the SMT, and mitigate warpage, and/or protect the PCB, HFCP, or AME during shipment and further manipulation or processing.

Systems and methods that enable printing of conformal materials and other waterproof coating materials at high resolution. An initial printing of a material on edges of a component is performed at high resolution in a first printing step, and a subsequent printing of the material on remaining surfaces of the component is applied in a second printing step, with or without curing of the material printed on the edges between the two printing steps. The printing of the material may be performed by a laser-assisted deposition or using another dispensing system to achieve a high resolution printing of the material and a high printing speed.

A method of forming a material layer on a substrate comprises loading a substrate into a printing zone of a coating system using a substrate handler, printing an organic ink material on a substrate while the substrate is located in the printing zone, transferring the substrate from the printing zone to a treatment zone of the coating system, treating the organic ink material deposited on the substrate in the treatment zone to form a film layer on the substrate, and removing the substrate from the treatment zone using the substrate handler.

The present disclosure provides a hydrophobic low-dielectric-constant film and a preparation method therefor. The low-dielectric-constant film is formed from one or more fluorine-containing compounds A by means of a plasma enhanced chemical vapor deposition method, and the one or more fluorine-containing compounds comprise a compound having the general formula C.sub.xSi.sub.yO.sub.mH.sub.nF.sub.2x+2y−n+2 or C.sub.xSi.sub.yO.sub.mH.sub.nF.sub.2x+2y−n, x being an integer from 1 to 20, y being an integer from 0 to 8, m being an integer from 0 to 6, and n being 0, 3, 6, 7, 9, 10, 12, 13, 15, 16, 17 and 19. Thus, a nano-film having a low dielectric constant and good hydrophobicity is formed on the surface of a substrate.