Abstract:
Disclosed is a flexible printed circuit, comprising a substrate, and a silver foil and a reinforcement plate attached on said substrate in order, wherein there is an ink layer between said silver foil and said reinforcement plate. According to the invention, by printing the ink onto the silver foil and then attaching the reinforcement plate, especially printing the ink in the form of a dot, strip or mesh, the total thickness of the flexible printed circuit will not increase while the surface roughness of the silver foil increases, resulting in increase of adhesion of the reinforcement plate. This strengthens the attachment between the reinforcement plate and the silver foil, meeting the requirement of peeling-resistant strength between the reinforcement plate and the silver foil.
Abstract:
There is provided a touch panel capable of obtaining a stable connection resistance without requiring fitting accuracy at the time of the connection to an external terminal, and a protective panel for a display window of an electronic device using the same. The analog type touch panel includes a touch side substrate 2 and a non-touch side substrate 3 each having resistive films 2a, 3a provided on opposed inner surfaces thereof. Through-holes 4a, 4b, 4c, 4d formed at the periphery of the non-touch side substrate 3. A connecting part 5 for electrically connecting electrodes of the resistive films 2a, 3a to an external terminal, in which a conductive paste is injected into the through-holes and a rivet 14 is inserted into each of the through-holes from the lower surface side so that a head of the rivet 14 forms flat connecting electrodes 15a, 15b for connection to the external terminal on the lower surface of the non-touch side substrate 3.
Abstract:
To provide a semiconductor display device capable of being easily manufactured and a method for manufacturing the semiconductor display device. The semiconductor display unit 1 includes: a printed circuit board 3 with a display section 2 formed thereon; a protection member 4; a embankment member 5; X lines 6; and Y lines 7. The embankment member 5 is composed of silicon resin which is capable of repelling epoxy resin constituting the protection member 4. Even when the embankment member 5 is lower than the protection member 4 or even when potting is performed to make the liquid epoxy resin 21 higher than the embankment member 5 at a manufacturing process, the epoxy resin 21 is repelled by the embankment member 5 and dose not spill.
Abstract:
A holding/convey jig having a plate surface provided with an adhesive pattern of low adhesion for placing and holding a printed circuit board having a conductive portion and a non-conductive portion. The adhesive pattern of low adhesion is formed only at a position corresponding to the non-conductive portion. Moreover, there is disclosed a holding/convey jig having a plate surface provided with a fluorine-based resin layer for placing and holding a printed circuit board having a conductive pattern on an insulating substrate surface. The fluorine-based resin layer has such a structure that the conductive pattern surface of the printed circuit board is held substantially parallel to the plate surface. The holding/convey jig can suppress a manufacturing defect in the step of agglutinating an electronic part onto the thin-plate printed circuit board or in the step of manufacturing the printed circuit board and reduce the manufacturing cost.
Abstract:
An electronic package having a controlled standoff height between a surface mount electronic device and a substrate includes a plurality of polymeric standoffs adhered to at least one of the underside of the surface mount electronic device or an upper surface of the substrate. The polymeric standoffs prevent collapse of the surface mount electronic device during overmolding or encapsulation of the surface mount electronic device.
Abstract:
Corruption of features formed by etching a metal-containing web in a continuous etch process is reduced by distorting the original design or designs of the features to compensate for localized areas subject to excessive etching during the continuous etch process. In the case of a planar speaker diaphragm, for example, the width of the portions of the trace that are in a cross-machine direction is increased to compensate for the higher etching rate caused by the motion through the etch bath. While this causes the modified trace design to appear to be distorted relative to the original trace design, the etched trace resulting from the modified trace design has improved uniformity and greater fidelity to the original trace design than if the original trace design had been used in the continuous etch process.
Abstract:
A membrane switch is formed by laminating a pair of flexible printed circuit (FPC) boards with two types of resist between them. An oil-resistant thermally adhesive resist is used in the peripheral area between the laminated FPC boards, and a resist that is not thermally adhesive is used in the central area. The thickness of these resists forms a spacer between the FPC boards
Abstract:
A panel for an electro-optical apparatus, includes a substrate, a plurality of wires formed on the substrate, convex portions formed from resin and provided either on the plurality of wires or on the substrate, conductive layers provided so as to cover at least a portion of the surfaces of the convex portions, and that are electrically connected to the respective wires, and a plurality of external connection terminals for electrically connecting electronic components, formed by the convex portions and the conductive layers.
Abstract:
A method of forming a printed circuit board using an ink jet print head by printing a three dimensional groove using a curable, non-conductive deposition liquid and depositing a liquid that dries to form a conductive track. The walls on either side of the groove impede the liquid from spreading and consequently larger quantities of the conductive deposition liquid can be deposited without causing a short circuit. A multi layer printed circuit board can be produced by depositing further layers of curable non-conductive deposition liquid over the conductive track, a further conductive track in an upper layer being in contact with a conductive track in a lower layer along a slope formed from the non-conductive deposition liquid.
Abstract:
The specification describes a surface mount method for the manufacture of high device density circuit boards. The stand-off space of the components (11) on the board (13) can be enlarged significantly by selectively omitting, or selectively removing, the soldermask (16) underneath the component (11) package. This improves access of the cleaning fluid to the underside of the component (11) during the cleaning operation.