摘要:
An adhesive for bonding and securing a semiconductor chip to a circuit board and electrically connecting the electrodes of the two, and containing 100 parts by weight of an adhesive resin composition and 10 to 200 parts by weight of an adhesive resin composition and 10 to 200 parts by weight of an inorganic filler, a circuit board in which the circuit members are bonded together with the adhesive, and a method of producing the circuit board.
摘要:
There is provided a fiber-reinforced composite material containing fibers having an average fiber diameter of 4 to 200 nm and a matrix material, the composite material having a visible light transmittance of 60% or more at a wavelength of 400 to 700 nm, which is a conversion value based on a thickness of 50 μm. A fiber-reinforced composite material composed of a matrix material and a fiber aggregate impregnated therewith is provided, in which when a segment length of a bright region corresponding to a pore region of the fiber aggregate is represented by L, which is obtained by statistical analysis of a unidirectional run-length image formed from a binary image obtained by binarization of a scanning electron microscopic image of the fiber aggregate, the total length of segments that satisfy L≧4.5 μm is 30% or less of the total analyzed length. A transparent multilayered sheet, a circuit board, and an optical waveguide are provided which use a transparent substrate formed from this fiber-reinforced composite material.
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:
There are provided a resin composition comprising a crosslinking component with a weight average molecular weight of 1,000 or less having a plurality of styrene groups and represented by the following formula: wherein R is a hydrocarbon skeleton, each of R1s is a hydrogen atom or a hydrocarbon group, each of R2, R3 and R4 is a hydrogen atom or an alkyl group, m is an integer of 1 to 4, and n is an integer of 2 or more, at least one high-molecular weight compound, an inorganic filler, and at least one treating agent for said inorganic filler; its cured product; and a prepreg, a laminate sheet having a conductor layer, and a multilayer printed wiring board obtained by processing the conductor layer of the laminate sheet into wiring.
摘要:
A remote control system for precisely identifying a distance from the vehicle to an entry key and favorably controlling a vehicle-mounted device such as a door corresponding to the distance. The system comprises a transmitter transmitting different types of response demand signals within a predetermined communication area outside the vehicle, a vehicle mounted receiver for receiving a response signal released from a portable transmitter/receiver in response to the reception of the response demand signal, a controller controlling the vehicle mounted device corresponding to the reception of the response signal by the vehicle mounted receiver. Locking and/or unlocking door(s) of the vehicle are controlled on the basis of whether or not the receiver receives the response signal to a response demand signal other than one having the largest communication area.
摘要:
A conductive paste for defogging heat wires of automobile windows contains a silver powder having particle size in the range of about 0.1 to 20 &mgr;m, a molybdenum compound such as molybdenum silicide or molybdenum boride, a glass frit having a softening point of 730° C. or less and an organic vehicle. The conductive paste can uniformly darken the conductive heat wire regions of the automobile window without producing any harmful substances. Also, it can ensure sufficient bonding strength of lead wires.
摘要:
A remote door lock controlling apparatus for a vehicle performing a door lock control in response to a response signal received by a vehicle mounted receiver which is transmitted from a portable transmitter/receiver upon receiving a response demand signal from the vehicle is improved wherein the door lock control function is stopped by a request of the user or depending on the magnitude of a terminal voltage of a battery mounted in the vehicle.
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 heat-active adhesive for a connecting circuit which is used for electrically connecting circuit electrodes facing each other in the pressing direction by heating and pressing the electrodes. The adhesive has an elastic modulus of 100-2,000 MPa at 40° C. after adhesion. The adhesive can contain at least an epoxy resin, acrylic rubber, and a latent curing agent. An acrylic rubber having a glycidryl ether group as a molecule is preferably used as the acrylic rubber.
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.