摘要:
A pressure conductive sheet includes a connector body formed of a thin plate of insulation material, an elastic body deposited as one body with the connector body, pluralities of connection terminals provided with a given interval to pass through the elastic body and the connector body, and a ground plate constituting a matching circuit, the ground plate being buried by a given width in between the connector body and the elastic body. The ground plate is coupled to a ground terminal among the connection terminals and is separated from an outer circumference face of a signal terminal. The connector body, the elastic body, the connection terminals and the ground plate are combined with one another to substantially reduce an interference between signal terminals through the matching circuit formed based on capacitance of a gap between a ground face of the ground plate and the signal terminal, and to improve electrical characteristics.
摘要:
A printed circuit board (PCB) may include a substrate. A copper layer may be formed over a portion of the substrate, the copper layer including at least one of a metallic powder and a ceramic powder.
摘要:
An object of the present invention is to provide a compound that can regulate plant growth. The compound selected from the group consisting of (A) and (B):(A) 3H-imidazo[4,5-d][1,2,3]triazin-4,6(5H,7H)-dione; and(B) 3-methyl-3H-imidazo[4,5-d][1,2,3]triazin-4,6(5H,7H)-dione;has a plant growth regulating action.
摘要:
In a method of attaching a solder ball, a first material is coated on a solder ball. A second material is coated on a pad of a substrate where the solder ball is to be attached to exothermically react with the first material. The solder ball makes contact with the pad such that the first material and the second material exothermically react with each other to release heat to adhere the solder ball to the pad using the heat.
摘要:
A metallic laminate and a method of manufacturing a core substrate using the same are disclosed. In accordance with an embodiment of the present invention, the metallic laminate includes an insulation material, a carrier layer, which is stacked on both surfaces of the insulation layer and in which the carrier layer is a metal, and a first metal foil, which is stacked on one surface of the carrier layer. By symmetrically forming two core substrates on either surface above and below the insulation material, each process of forming the core substrate can be performed at the same time in the shape of a pair of facing core substrates, thereby increasing the productivity by twice. The remaining insulation material having the carrier layer stacked thereon can be used as a base substrate that is used to manufacture a printed circuit board, thus preventing unnecessary waste of the insulation material.
摘要:
There are provided reflow apparatuses and a methods therefor. In some embodiments, a reflow apparatus includes a first heating unit capable of heating a solder on a substrate up to just below before a melting point of the solder at ambient pressure such that the solder on the substrate is melted and electronic components mounted on the substrate are then soldered to the substrate; and a second heating unit connected to the first heating unit, the second heating unit capable of heating the solder on the substrate heated in the first heating unit through at least a portion of a solder melting temperature range in a vacuum state.
摘要:
A data storage device includes a printed circuit board (PCB), a connection tab, a dummy tab and a guiding member. A memory chip is mounted on the PCB. The connection tab is formed on a first surface of the PCB to electrically connect the PCB with a first cable. The dummy tab is formed on the first surface of the PCB. The guiding member is formed on the dummy tab to guide an insertion direction of the first cable. Thus, the data storage device without a separate connector may be manufactured by a relatively simple process at a lower cost.
摘要:
A multi-input multi-output (MIMO) antenna for improving isolation is provided. Split ring resonators (SRRs) are structurally arranged on the lower end of a ground surface between a plurality of antenna patterns spaced apart from each other. Accordingly, permeability of the SRRs has a negative value, which prevents current from flowing between antennas. Consequently, the isolation characteristic of the antennas is improved.
摘要:
A pouch type secondary battery which can prevent a cut portion from electrically contacting a protective circuit module, thereby preventing an electrical short circuit and acceleration of corrosion of a core material and enhancing safety includes an electrode assembly having a first electrode plate, a second electrode plate, and a separator; a pouch case made of a flexible material, and having a container, insulated at least on its inner surface and accommodating the electrode assembly, and sealing portions along an edge of the container, the sealing portions including a first sealing portion through which electrode taps of the electrode assembly extend from the pouch case, and a second sealing portion and a third sealing portion respectively positioned at opposite sides of the first sealing portion, the second an third sealing portions being folded at least one time; a protective circuit module connected to the electrode taps and mounted on an outer surface of the first sealing portion; and a short circuit protector formed in at least one among the first through third sealing portions to prevent an electrical short circuit between each sealing portion and the protective circuit module.
摘要:
An electrolyte solution and a super capacitor including the same, which has superior voltage stability, a high operation voltage and a high energy density, are disclosed. The electrolyte solution includes: a C3-C4 alkyl-substituted ammonium based electrolytic salt; and a non-aqueous solvent. Preferably, the C3-C4 alkyl-substituted ammonium based electrolytic salt includes a cation selected from the quaternary ammonium salt group consisting of tetrapropyl ammonium, tetrabutyl ammonium, and the mixture thereof, and an anion selected from the group consisting of tetrafluoroborate (BF4−), hexafluorophosphate (PF6−), perchlorate (ClO4−), hexafluoroarsenate (AsF6−), bis(trifluoromethylsulfonyl)imide ((CF3 SO2)2N−), trifluoromethylsulfonate (SO3 CF3−), and the mixtures thereof.