Abstract:
A multilayer wiring plate includes a coaxial wire includes a signal line, an insulation coating and an outer peripheral conductor. An insulating layer is arranged on an inner or outer layer side. A metal film circuit is arranged by the intermediary of the insulating layer, and the metal film circuit and the outer peripheral conductor and signal line of the coaxial wire are connected. A signal line connection part that connects the signal line to the metal film circuit includes a penetration hole A that passes through the insulating layer and the outer peripheral conductor; the coaxial wire from which the outer peripheral conductor is removed inside the penetration hole A; a hole filling resin filled inside the penetration hole A; a penetration hole B that passes through the hole filling resin and the signal line; and a plated layer arranged on an inner wall of the penetration hole B.
Abstract:
A semiconductor package includes a substrate, a first conductive layer, a second conductive layer, a first surface mount device, a second surface mount device and a connection element. The first conductive layer is formed on the substrate and has a first pad and a second pad separated from the first pad. The second conductive layer is formed on the substrate and has a third pad and a fourth pad electrically connected with the third pad through the second conductive layer. The first surface mount device is mounted on the first pad and the third pad. The second surface mount device is mounted on the second pad and the fourth pad. The connection element electrically connects the first pad with the second pad.
Abstract:
A high voltage discharge protective device for an RF device having a signal port, includes a blocking capacitor arranged at the signal port of the RF device, a circuit board for mounting the blocking capacitor, and a metal conductor grounded and partially bare. The blocking capacitor includes a main body and two leads connected to the main body and secured to the circuit board. The bottom portion of the main body is bare to form an exposed portion. The exposed portion is spaced apart from the circuit board to form an interval. The metal conductor is disposed within the interval and corresponds to the exposed portion of the blocking capacitor. When the passing voltage within the blocking capacitor reaches a predetermined value, the exposed portion of the blocking capacitor sparkly discharges to the metal conductor. An RF device is also provided.
Abstract:
A method for producing a circuit board element, and a corresponding circuit board element, with which it is possible to suppress the risk of delamination in the region of a component (e.g. a wire or a plate-like shaped part) that is embedded in the circuit board element. To this end, the present invention suggests that the surface of the component should be roughened, at least partially, in order to ensure a better adhesive bond with the surrounding cover layer (e.g. a prepreg made of an insulating material compound). The component surface can be roughened by chemical methods such as etching or by purely mechanical methods such as sand blasting.
Abstract:
A dual-interface smart card having a booster antenna with coupler coil in its card body, and a metallized face plate having a window opening for the antenna module. Performance may be improved by one or more of making the window opening substantially larger than the antenna module, providing perforations through the face plate, disposing ferrite material between the face plate and the booster antenna. Additionally, by one or more of modifying contact pads on the antenna module, disposing a compensating loop under the booster antenna, offsetting the antenna module with respect to the coupler coil, arranging the booster antenna as a quasi-dipole, providing the module antenna with capacitive stubs, and disposing a ferrite element in the antenna module between the module antenna and the contact pads.
Abstract:
A touch screen manufacturing method includes the following steps: providing a glass substrate; bombarding a surface of the glass substrate by plasma to expose Si—O-groups on the surface; coating and curing a jell on the surface of the glass substrate which is bombarded by plasma, forming a base material layer, the jell is bonded to the Si—O-groups on the glass substrate during curing; embossing the base material layer by embossing mold, forming a trench on the surface of the base material layer against the glass substrate; and filling metal into the trench, and forming metal mesh as a conductive layer. A touch screen is also disclosed. Compared to the traditional process using ITO as a conductive layer, mesh shape can be one-step formed, the process is simple, and the yield rate is high. And the cost is greatly reduced using metal instead of ITO, since not etching process is used, conductive material will not be wasted, and it reduces heavy metal emission in the waste.
Abstract:
A proximity sensor comprises: a package substrate; a sensing chip disposed on the package substrate and sensing a proximity message of a finger; a plurality of package bond wires connecting the package substrate to the sensing chip; a bond-wire electrode electrically connected to at least one of the sensing chip and the package substrate; and a molding compound layer covering the package substrate, the sensing chip, the package bond wires and the bond-wire electrode with a portion of the bond-wire electrode being exposed from an upper surface of the molding compound layer, which serves as a contact surface for the finger. When the finger contacts the upper surface, the finger is also directly coupled to the portion of the bond-wire electrode. A method of manufacturing such sensor is also disclosed.
Abstract:
An electrical apparatus, comprising a circuit board, and a capacitor installed on the circuit board; the capacitor is detachably installed on the circuit board. The capacitor can be conveniently detached from the circuit board; therefore, a damaged capacitor can be easily replaced with a new capacitor, saving cost by avoiding the problem in the prior art that the entire electrical apparatus is discarded or causes downtime for repairs due to a damaged capacitor.
Abstract:
A booster antenna (BA) for a smart card comprises a card antenna (CA) component extending around a periphery of a card body (CB), a coupler coil (CC) component at a location for an antenna module (AM), and an extension antenna (EA) contributing to the inductance of the booster antenna (BA). A method of wire embedding is also disclosed, by controlling a force and ultrasonic power applied by an embedding tool at different positions on the card body (CB).
Abstract:
A high voltage discharge protective device for an RF device having a signal port, includes a blocking capacitor arranged at the signal port of the RF device, a circuit board for mounting the blocking capacitor, and a metal conductor grounded and partially bare. The blocking capacitor includes a main body and two leads connected to the main body and secured to the circuit board. The bottom portion of the main body is bare to form an exposed portion. The exposed portion is spaced apart from the circuit board to form an interval. The metal conductor is disposed within the interval and corresponds to the exposed portion of the blocking capacitor. When the passing voltage within the blocking capacitor reaches a predetermined value, the exposed portion of the blocking capacitor sparkly discharges to the metal conductor. An RF device is also provided.