摘要:
In order to provide a portable electronic device improved in water tightness by a simple method, the portable electronic device includes: a housing assembled from a plurality of housing pieces via a sealing member and having a built-in electronic circuit; and a flat cable group in which a plurality of flat cables having a plurality of electric signal lines aligned and connected to the electronic circuit are stacked in a thickness direction, and adjacent flat cables are bonded to each other via an adhesive material at least at a point in an overall length, the flat cable group being integrally molded with the sealing member of the housing at the point.
摘要:
A sealing structure to seal housings includes a sealing member disposed between housings to be bonded to allow penetration of at least one signal line; and an adhesive material disposed between the signal lines penetrating the sealing member to bond the signal lines to be overlapped.
摘要:
A method of manufacture of an integrated circuit packaging system includes: forming a substrate; mounting a base integrated circuit on the substrate; forming a leadframe interposer, over the base integrated circuit, by: providing a metal sheet, mounting an integrated circuit die on the metal sheet, injecting a molded package body on the integrated circuit die and the metal sheet, and forming a ball pad, a bond finger, or a combination thereof from the metal sheet that is not protected by the molded package body; coupling a circuit package on the ball pad; and forming a component package on the substrate, the base integrated circuit, and the leadframe interposer.
摘要:
The hybrid housing includes a base housing and one or more separately made functional components joined in the base housing by electron beam welding to provide a hermetically sealed hybrid housing e.g. for use under water or in aircraft or spacecraft. The separately made functional components can included e.g. a KOVAR-glass feed-through device and/or a copper or molybdenum metal block for heat dissipation. The base housing can be made of aluminum, an aluminum alloy, stainless steel or VA steel.
摘要:
A metal casing for a semiconductor device is manufactured by a powder metallurgy injection molding process which uses infiltration. The metal casing includes a base member and an enclosure member arranged on the base member. The base member and the enclosure member are formed of an alloy including 20 to 50 percent by volume of copper, equal to or less than 1 percent by weight of nickel and remainder of tungsten or molybdenum. The metal casing is manufactured as a net-shape product by a process which includes the steps of mixing tungsten powder and nickel powder having average particles sizes equal to or less than 40 .mu.m so as to form mixed metal powder, kneading the mixed metal powder with an organic binder so as to form an admixture, injection molding said admixture so as to form a predetermined green shape, debinderizing said green shape, applying surface powder to at least one surface of the green shape so as to prevent effusion of copper during infiltration and infiltrating copper into the green shape so as to produce a net-shape product.
摘要:
A surface mount package for encapsulating an electronic device is provided. The package has a ceramic frame containing a plurality of apertures. Copper-tungsten composite metallic components are bonded to the ceramic frame and individually extend across each of the apertures. The metallic components may include a flange for bonding and a pedestal extending into each aperture.
摘要:
A low frequency power amplifier uses MOS FET's each having a semiconductor device unit including a source electrode, a drain electrode and an insulated gate electrode filled in a can type casing with the source electrode being electrically connected to the can type casing. When the MOS FET having its source electrode connected to the can type casing is mounted on a heat sink and operated in a source follower configuration, a stray capacity between the can-shaped casing and the heat sink is connected in parallel with a load so that the amplifier oscillates. The heat sink is grounded through an impedance element and the stray capacity is isolated from the load to prevent the oscillation.
摘要:
A semiconductor package fabricated from metals of atomic number less than 32 for use in any environment including a high radiation environment, and a process for fabricating a semiconductor package with reproducible electrical characteristics using mass production techniques. In the method, a base member, such as a metal header having metal terminal conductors and an area for attaching a semiconductor body, is first coated at least in part with a Soft Metal, such as copper, and then coated with a Hard Metal, such as nickel, or if a molybdenum-manganese metallized ceramic header is used, at least the metallization is coated with a metal strike, such as nickel, prior to coating the header with the Soft and Hard Metals, and then the base member is heat treated to form a header having an improved semiconductor body attachment area and electrical conductors.
摘要:
This invention relates to an improved transistor structure, particularly a ''''12-type'''' germanium alloy transistor. The invention also relates to a method of manufacturing such a transistor, wherein the semiconductor device is free to move during attachment thereto of the connecting leads, thereby eliminating stress upon the device.
摘要:
The device includes a semiconductor die joined to a thermally conductive substrate with a solder having a high lead content. An enclosure surrounds the die and is sealed to the substrate. A substantially nonoxidizing atmosphere is provided within the enclosure.