摘要:
A manufacturing method of an inkjet head, which jets, by shear deformation of a partition wall, an ink in an ink flow path, having the steps of: forming a metal electrode on a surface of the partition wall; coating an adhesive agent on the cover board; superposing the cover board onto an upper end surface of the partition wall under the state satisfying the following condition 1, so that the ink flow path is formed with the partition wall and the cover plate; and pressing the channel board and the cover board under the state satisfying the following condition 1 all the time, and experiencing the following condition 2. (Condition 1): Hardness of the adhesive agent is not less than 105 dyne/cm2. (Condition 2): Hardness of the adhesive agent is not less than 105 dyne/cm2 and not greater than 109 dyne/cm2.
摘要:
A method is provided for manufacturing a multilayer wiring board wherein good adhesion is achieved between an insulating layer and a wiring pattern. The multilayer wiring board has a laminar structure which includes insulating layers and a wiring pattern. The method includes at least the steps of sticking a support whose surface has been treated with a coupling agent onto an insulating layer with a coupling agent interposed therebetween, and transferring the coupling agent to the insulating layer by removing the support while leaving the coupling agent on the insulating layer.
摘要:
Bonding pad(s) formed on a printed circuit board with circuit patterns. The bonding pad(s) include a plurality of copper patterns formed on the PCB and electrically connected to the circuit patterns, a filler filled between the copper patterns such that an upper surface of the copper pattern is exposed, and a plating layer applied at an upper surface of the copper patterns. An interval between wire bonding pad(s) is reduced by preventing a nickel plating layer and a gold plating layer from protruding at a lower portion of a copper pattern when they are formed on the copper patterns.
摘要:
A process is provided for manufacturing a multiple layer wiring board incorporated therein a thin-film capacitor. The process comprising the following steps of: covering a first conductor pattern formed on an insulating layer, except for a lower electrode forming region of a thin film capacitor, with a first resist film; forming a metallic film layer consisting of a barrier metal layer and tantalum metal layer, in this order, on an entire face of the first conductor pattern covered with the first resist film; removing the first resist film to remove the metallic film layer, except for the lower electrode forming region, from a face of the first conductive pattern; covering a face of the first conductor pattern, except for a lower electrode forming region of the first conductor pattern, with a second resist film; forming an anodic oxidation film on the metallic film layer exposed from the second resist film; removing the second resist film and attaching an adherence layer and a metal seed layer, in this order, on the anodic oxidation film and on the conductor pattern; and forming a second conductor pattern, which becomes an upper electrode, on the anodic oxidation film.
摘要:
A method and device for providing a gate blocking material. Specifically, a method for molding a substrate having known good and bad sites thereon, by blocking the gate area of the bad sites during the molding process. A blocking material or an injection pin are used to interrupt the flow of molding compound through an injection molding system, and thereby prevent molding compound from flowing onto the known bad substrate sites.
摘要:
A circuit on a printed circuit board transmits radio frequency (RF) signals. A modulator operatively coupled to the printed circuit board modulates a signal to be transmitted by modulating an information signal onto a carrier signal. A ground plane attaches to edges and to first and second surfaces of the printed circuit board. The ground plane electrically connects to components of the modulator. A power transistor physically attaches to the printed circuit board and electrically connects to the ground plane through a slot in the printed circuit board. The ground plane provides a suitable ground reference potential for both the modulator and the power transistor without individually constructed circuit boards for each. A ground isolation barrier formed on the ground plane may prevent nullcross talknull between the modulator and the power transistor.
摘要:
A method for making a fine electrically conductive grid embedded in a polymer substrate. The method includes the steps of providing a polymer substrate, forming a pattern of grooves in the substrate, filling the grooves with electrically conductive powder, and then applying heat and/or pressure to the substrate. The application of heat and/or pressure to the substrate causes the grooves to collapse inward against the conductive powder. Collapsing the grooves compacts the conductive powder within the groove, thereby establishing a continuously conductive grid line or circuit. The narrow grid lines that result allow more light to transmit through the substrate. The method allows grid lines to be made with higher aspect ratios (ratio of line depth to line width) than is possible by previous methods.
摘要:
A method for manufacturing low cost electroluminescent (EL) illuminated membrane switches is disclosed. The method includes the first step of die cutting, embossing or chemically etching the metal foil surface of a metal foil bonded, light transmitting flexible electrical insulation to simultaneously form one or more front capacitive electrodes, membrane switch contacts and electrical shunt, electrical distribution means and electrical terminations that together comprise a flexible printed circuit panel. This continuous flexible printed circuit substrate is then coupled to a precisely positioned indexing system. Next, the front metal foil capacitive electrodes are coated with a light transmissive electrically conductive layer. Then, a layer of electroluminescent phosphor is applied to the electrically conductive layer, a layer of capacitive dielectric is applied insulating the phosphor layer, a rear capacitive electrode is then applied over the capacitive dielectric layer, thus forming an electroluminescent lamp portion. Next, a transparent dielectric coating is applied to the entire surface of the lamp and substrate with open portions exposing electrical terminations, switch contacts and shunt. A spacer is applied to surround the switch shunt, providing an isolation barrier. An intermediary material is applied to the surface of the isolated rear EL electrode thus forming a switch actuator. Finally, the illuminated switch pattern is die-cut from the substrate material, and is then folded into three layers forming the final illuminated membrane switch.
摘要:
The present invention provides a conductive pattern that has low electric resistivity, is superior in adhesion to a substrate and does not cause substrate cracking during plating, a multilayered substrate incorporating such a conductive pattern, and a fabricating method for a multilayered substrate. At first, a conductive composition including a metal powder containing not less than 95 mass % of Ag, a sintering restrainer containing Cr and/or Cr compound, a dielectric loss conditioner containing Mn and/or Mn compound, and a vehicle is prepared. Next, electrodes made of the conductive composition are formed on a plurality of green sheets. The plurality of green sheets formed with the electrodes are then laminated to form a laminated product, whereafter the laminated product is sintered.
摘要:
A process for producing a resonant tag, wherein a metal foil having a thermal adhesion adhesive applied to at least one face thereof is stamped out into a circuit-like shape and is adhered to a base sheet, the process comprising: stamping out the metal foil into a predetermined shaped metal foil portion (4c) while being passed through a die roll (1) having thereon a stamping blade with a predetermined shape and a transfer roll (2) in contact with the die roll (1) which functions also as a die back-up roll; holding this metal foil portion obtained by the stamping-out operation onto the surface of the transfer roll by suction holes formed in the transfer roll; and thermally adhering the stamped metal foil portion to the base sheet (7) in contact with the transfer roll (2) at its another face by an adhesive roll (3) in contact with the transfer roll through the base sheet. The present invention has such advantages as no damage to the base sheet since the stamping-out operation for the metal foil and the thermal adhesion operation thereof to the base sheet are carried out in separate positions, and no requirement of carrier sheet because the resultant metal foil portion obtained by the stamping-out operation is sucked and held onto the surface of the transfer roll.