摘要:
A substrate connecting member connects two circuit boards connected together while maintaining high reliability of the junctions between itself and the circuit boards even if the circuit boards are warped by temperature change of an impact load. The substrate connecting member includes a frame member made of an insulating resin; slit grooves formed in at least one of the inner and outer surfaces of frame side portions composing the frame member, the slit grooves being formed throughout the entire length of the frame side portions in the direction perpendicular to the thickness direction of the frame side portions; and connection conductor portions having connection terminals provided on the top and bottom surfaces, respectively, of the frame side portions in the thickness direction and connecting conductors each connecting connection terminals.
摘要:
A substrate connecting member connects two circuit boards connected together while maintaining high reliability of the junctions between itself and the circuit boards even if the circuit boards are warped by temperature change of an impact load. The substrate connecting member includes a frame member made of an insulating resin; slit grooves formed in at least one of the inner and outer surfaces of frame side portions composing the frame member, the slit grooves being formed throughout the entire length of the frame side portions in the direction perpendicular to the thickness direction of the frame side portions; and connection conductor portions having connection terminals provided on the top and bottom surfaces, respectively, of the frame side portions in the thickness direction and connecting conductors each connecting connection terminals.
摘要:
A first circuit board (1) mounted with an electronic component (16) and a second circuit board (2) are vertically connected three-dimensionally through an interconnecting board (3) wherein the terminal portion (6) of the land electrode (5) on the interconnecting board (3) is buried in the termination material (9) of the interconnecting board (3). Consequently, the chance of peeling or cracking due to peeling stress or shearing stress acting between the upper/lower circuit boards and the land electrode by high density mounting, thermal shock or falling impact can be suppressed or buffered resulting in high reliability.
摘要:
A first circuit board (1) mounted with an electronic component (16) and a second circuit board (2) are vertically connected three-dimensionally through an interconnecting board (3) wherein the terminal portion (6) of the land electrode (5) on the interconnecting board (3) is buried in the termination material (9) of the interconnecting board (3). Consequently, the chance of peeling or cracking due to peeling stress or shearing stress acting between the upper/lower circuit boards and the land electrode by high density mounting, thermal shock or falling impact can be suppressed or buffered resulting in high reliability.
摘要:
Based on information indicating the signal transmission amount between the first and second circuit blocks, a switching device switches an optical signal communication form which uses a first and second optical signal transmitting/receiving devices and an electric signal communication form which uses a first and second electric signal transmitting/receiving devices. Thereby, in a portable information terminal apparatus with a separate main body operation unit and a separate screen display unit, power consumed by the optical signal communication can be suppressed.
摘要:
Provided is a portable device having such a configuration that a plurality of housings are connected functionally, wherein the thickness of a connection section between the housings is reduced so that the portability is improved. The portable device comprising: a first housing; a first board provided in the first housing; a second housing; a second board provided in the second housing; a connection section for connecting the first housing with the second housing in such a manner that the irrelative position can be changed; and an optical waveguide film having at least one optical waveguide for connecting the first board with the second board through optical wiring.
摘要:
Based on information indicating the signal transmission amount between the first and second circuit blocks, a switching device switches an optical signal communication form which uses a first and second optical signal transmitting/receiving devices and an electric signal communication form which uses a first and second electric signal transmitting/receiving devices. Thereby, in a portable information terminal apparatus with a separate main body operation unit and a separate screen display unit, power consumed by the optical signal communication can be suppressed.
摘要:
A portable device has a configuration such that a plurality of housings are connected functionally, wherein the thickness of a connection section between the housings is reduced so that the portability is improved. The portable device includes a first housing; a first board provided in the first housing; a second housing; a second board provided in the second housing; a connection section for connecting the first housing with the second housing in such a manner that their relative position can be changed; and an optical waveguide film having at least one optical waveguide for connecting the first board with the second board through optical wiring.
摘要:
Disclosed is a rectangular battery in which an electrode group formed by winding a first electrode and a second electrode with a separator interposed therebetween is housed in a battery case having an opening sealed by a sealing plate. The first electrode is electrically connected to the sealing plate, and the second electrode is electrically connected to a current collector plate provided between the sealing plate and the electrode group and extending along a longer side direction of the sealing plate. The sealing plate has a lower-strength portion configured to be deformed prior to the other portions of the sealing plate to provide a contact between the sealing plate and the current collector plate when the sealing plate receives an external pressure along the longer side direction of the sealing plate.
摘要:
A separator for a battery includes a porous polymer film having a first surface and a second surface opposite to the first surface, wherein the first surface has openings distributed thereon communicating with pores of the porous polymer film, and the ratio of the total area of the openings to the area of the first surface is 89% or more and 96% or less. The diameters of the openings may be within the range of 0.8 μm or more and 40 μm or less. A region with a predetermined thickness including at least the first surface of the porous polymer film preferably includes at least one selected from the group consisting of polypropylene, and a copolymer of propylene and another copolymerizable monomer.