摘要:
An antenna unit for sending out electromagnetic waves of a millimetric-wave band to outside and receiving the wave reflected from a target, and circuits for signal-processing the reflected wave are equipped as a vehicular millimetric-wave radar device. Antenna patterns are formed on a surface of a multilayer base plate formed of plural stacked layers of dielectric plates and an electroconductive layer interposed between each layer. Circuit wiring patterns and electronic components for signal processing of millimetric waves are disposed on the reverse side. Among all the above-mentioned electronic components, only a millimetric-wave signal oscillator, amplifier, and frequency converter are haused in a hermetically sealed section formed in a localized space on a face of the multilayer base plate. The other electronic components are arranged in a non-hermetically structured condition on a periphery of the hermetically sealed section. The above-mentioned oscillator, amplifier, and frequency converter are hermetically sealed in an inert gas atmosphere, whereas at least part of the other electronic components arranged in a non-hermetically structured condition is protected by resin coating. With this configuration, a compact, thin, and highly accurate millimetric-wave radar device is provided at a low cost.
摘要:
An electronic device comprises a circuit board which has a through hole and uses a resin with a glass transition temperature exceeding 150° C. as a base member, a metal casing which has an opening, and a connector which is fitted to the opening of the metal casing in which a pin of the connector is inserted into the through hole, the pin and the through hole are connected with a conductive member, and a reinforcement member for securing the connector and the board is further provided on the conductive member, thereby improving the reliability of the electronic device.
摘要:
A semiconductor device includes a semiconductor chip formed with connection terminals, an elastic structure interposed between a main surface of the chip and a wiring substrate formed with wirings connected at first ends thereof to the connection terminals, and bump electrodes connected to the other ends of the wirings. The connection terminals may be at a center part or in peripheral part(s) of the chip main surface and both the elastic structure and wiring substrate are not provided at locations of connection terminals. A resin body seals at least the connection terminals and the exposed first ends of wirings (leads). In a scheme in which the connection terminals are located in a peripheral part of the chip main surface, the wiring substrate protrudes beyond the chip boundary where the connection terminals are arranged, and the resin body shape is restricted by the protruding part of the wiring substrate.
摘要:
A semiconductor plastic package, more particularly a preferred package structure and method for making a BGA package. A resin sealed BGA package where a supporting frame which fixedly supports semiconductor parts; i.e., an IC chip, a circuit board, or a circuit film, is sealed with resin, using a mold, which is composed of an upper mold half and a lower mold half with the lower mold half having a plurality of projections, one at a position corresponding to each of the external terminals. The mold has a divisional structure which has an air vent between the divisional elements thereof.
摘要:
The invention provides a packaging structure applied to an automotive component having semiconductors and electronic parts mounted on a ceramic base, characterized in that the semiconductors and electronic parts are partly or entirely sealed with a thixotropic silicone gel which has a thixotropy index of about 1.5-3.6 and a penetration depth of about 6-10 mm and a rate of change in viscosity of less than 10% of the initial value.
摘要:
A semiconductor device including a semiconductor chip having connection terminals in a peripheral part of a main surface thereof; an elastic body disposed on the main surface leaving the connection terminals exposed; an insulating tape formed on the elastic body and having openings in areas where the connection terminals are situated; plural leads formed on the top surface of the insulating tape, one end of each lead being connected to one of the connection terminals and the other end being disposed on the elastic body; plural bump electrodes formed on the other ends of the plural leads; and a resin body for sealing the connection terminals and one end of each of the leads, wherein the insulating tape protrudes beyond the chip where the plural connection terminals are arranged, and wherein the shape of the resin body is restricted by the protruding part of the insulating tape.
摘要:
A semiconductor device, is provided will semiconductor chips having a plurality of electrodes for external connection, elastomer resin portions formed of an elastomer resin, which are bonded to the semiconductor chip excepting at least some of the plurality of electrodes, a tape layer of resin including tape wiring patterns on the surface thereof, a plurality of solder bumps for bonding the printed wiring pattern to the tape wiring patterns, leads for connecting the plurality of electrodes of the semiconductor chips to the tape wiring patterns, and seal resin for covering the leads and the plurality of electrodes which are connected by the leads. The elastomer resin has a modulus of transverse elasticity not less than 50 MPa and not more than 750 MPa.
摘要:
A resin encapsulated semiconductor element is encapsulated with resin composition containing an organic compound selected from the group consisting of organobromine compounds, organophosphorus compounds and organonitrogen compounds, an inorganic filler, and a metal borate. The obtained resin encapsulated semiconductor element has the same flame resistance as a conventional semiconductor element which is encapsulated with a resin composition containing a halogen and antimony compound, and furthermore, has remarkably improved reliabilities regarding moisture resistance and storing at a high temperature by effects of the contained metal borate for suppressing generation of or trapping released gas components, such as halogen or phosphorus, and others.
摘要:
A module comprises a metallic terminal pins for connection and a circuit board with electronic components mounted thereon, a circuit board connecting side of the connector. The electronic components and the circuit board with the electronic components mounted thereon are encapsulated with the same resin. A metallic base is united to the module to obtain an electric conduction between the metallic base and the circuit board.
摘要:
In an electronic device having an interposer substrate as an MCM structure, heat dissipation properties are enhanced while the reliability of joint between the interposer substrate and a mother board is maintained. In the invention, a metal core base material of great heat capacity and high thermal conductivity is used for both the interposer substrate and the motherboard. Furthermore, a part where a core metal is exposed is provided on at least one of the interposer substrate and the motherboard. A solder joint pad is directly formed on the core metal exposed part, and the interposer substrate is solder-joined to the motherboard.