摘要:
Disclosed is a method of fabricating a high density PCB. Electric properties of a high frequency package product are reduced due to an increased length of a circuit even though the increased length of the circuit is necessary to maintain physical strength in the course of fabricating the PCB. Accordingly, a core insulating layer is removed, thereby providing a method of fabricating a slim PCB having a short wiring length.
摘要:
Disclosed herein is a method of manufacturing a package substrate with a fine circuit pattern using anodic oxidation. By anodizing a metal core which is opened through a masking process, oxidation layers are formed in open areas of the metal core to insulate portions of circuit pattern from each other. Further, by electroplating portions provided between the oxidation layers with copper or filling conductive paste between the oxidation layers using a screen, a package substrate having a fine circuit pattern is achieved.
摘要:
A fill plated structure of an inner via hole, which includes an electroless plated layer formed on a copper clad laminate having an inner via hole formed therethrough, a first copper electroplated layer formed on the electroless plated layer on the copper clad laminate and formed on an inner wall of the via hole to form an belly portion having a belly shape, and a second copper electroplated layer formed on the first copper electroplated layer of a surface of the copper clad laminate and formed on upper and lower portions of the first copper electroplated layer of the inner wall of the via hole to fill the via hole; and a method of manufacturing the same.
摘要:
Through holes for flow paths of the fuel cell are formed in a thermoplastic polymer film by a process selected from a group consisting of laser drilling, etching and lithography, an inner side surface of the thermoplastic polymer film is coated with a metal layer, and the through holes are filled with a fuel diffusion material and a catalyst to provide an anode. The procedure is repeated to provide a cathode. Then, the anode and the cathode are placed to oppose each other. A cation conducting polymer membrane is disposed, between the anode and the cathode, and the anode, the cation conducting polymer membrane and the cathode are hot-pressed.
摘要:
Disclosed is a method of fabricating a package substrate using electroless nickel plating. The method includes preparing a base substrate, on which an internal layer circuit pattern is formed through a predetermined masking process; forming an insulating layer on the base substrate to achieve interlayer electric insulation; forming a first via hole through the insulating layer to achieve interlayer electric connection; forming a seed layer on the insulating layer through which the first via hole is formed; and forming an external layer circuit pattern on the seed layer through the other predetermined masking process. The seed layer is partially or selectively flash etched so as to prevent via open and undercut formed at the external layer circuit pattern.
摘要:
A portable display device includes a liquid crystal layer, a back light assembly comprising a light source for supplying light to the liquid crystal layer, a reflecting plate included in the back light assembly to supply light from the light source to the liquid crystal layer, and at least one adhesive member attached to at least three edges of a rear surface of the reflecting plate. The at least one adhesive member may also be attached to the reflecting plate and a bottom chassis of the back light assembly, a printed circuit board, or a display panel so as to form an air hole.
摘要:
Provided is a hinge. The hinge includes: a rotating plate which includes a plurality of pin fixing holes and at predetermined portions of both the ends of which a respective fixing groove is correspondingly formed; a fixing plate which includes an opening through which the rotating plate is fitted and at predetermined portions of the inner side of which a respective fixing groove is correspondingly formed and a plurality of pin fixing holes are perforated; and a hinge combiner unit which connects and disconnects the rotating plate with and from the fixing plate. Accordingly, since the fixing plate and the rotating plate are connected with or disconnected from the hinge combiner unit, the different materials can be applied to the fixing plate, the rotating plate, and the hinge combiner unit, to thus save the production cost.
摘要:
Embodiments are described for a voltage compensated sense amplifier. One such sense amplifier includes a pair of digit line nodes respectively coupled to a pair of transistors. A first pair of switches are adapted to cross-couple the gates of the transistors to the respective digit line node and a second pair of switches are adapted to couple the gates of the transistors to a voltage supply. The first and second pair of switches are coupled to respective gates of the transistors independent of the pair of transistors being respectively coupled to the digit line nodes.
摘要:
A backpack suspension system is provided that provides a more natural feel as it is able to match a hiker's twisting and bending motions. A backpack suspension system comprises a frame having an upper and a lower portion, and a hub connecting the upper and lower portion. The upper and lower portion comprise a plurality of rods adapted to rotate within the hub. The hub is adapted to pivot about a horizontal axis. In certain embodiments the frame is substantially X shaped and in certain embodiments the hub is substantially X shaped.
摘要:
Provided are a silicon nitride layer for a light emitting device, light emitting device using the same, and method of forming the silicon nitride layer for the light emitting device. The silicon nitride layer of the light emitting device includes a silicon nitride matrix and silicon nanocrystals formed in the silicon nitride matrix. A light emitting device manufactured by the silicon nitride layer has a good luminous efficiency and emits light in the visible region including the short-wavelength blue/violet region and the near infrared region.