摘要:
A voltage conversion module is formed by a mulitilayered laminate of a first connection layer, first inner wiring face, component built-in layer, second inner wiring face, second connection layer, capacitor mounted face, and capacitor built-in layer with a resin composite. The connection terminal of the terminal face of the first connection layer, first inner wiring face, second inner wiring face, and capacitor mounted face are electrically coupled with a viahole conductor (via). The second inner wiring face couples a voltage conversion IC built in the component built-in layer with a peripheral component. The first and second capacitors built in the capacitor built-in layer are mounted on the capacitor mounting face. Thus, a circuit of coupled first and second capacitors is formed between the terminal of the voltage conversion IC and the ground.
摘要:
The present invention provides a method of manufacturing a low-temperature sintering multilayer ceramic wiring board comprising the steps of: forming a wiring layer by printing conductive paste (4) on an unfired green sheet (1); forming a laminate by laminating, on at least one side of a ceramic substrate, the unfired green sheet having the wiring layer; and firing the laminate. The present invention also provides paste for use with this method. In the firing step, after an adhesive layer (8) or binder resin in said green sheet used for lamination burns, glass ceramic in the green sheet starts to sinter, and upon or after the start of sintering of the glass ceramic, conductive particles in the conductive paste starts to sinter. This manufacturing method can provide an precise wiring board without pattern deformation and also provide a low-temperature ceramic multilayer wiring board that has no cracks in the glass ceramic on the periphery of electrodes and has electrodes of a dense film structure.
摘要:
A module component is provided having a sufficient shield effect and fabricated low in height. On a circuit board (10), a mount device (30) comprising an electronic part is mounted, and this mount device (30) is sealed with a sealing body (40). On the surface of this sealing body (40), a metal film (20) is formed. A ground pattern (50) is formed at the outer periphery of the principal surface of the circuit board (10), and a configuration is formed in which said metal film (20) is conductively connected with the ground pattern (50).
摘要:
A module component includes a wiring circuit pattern formed on an insulated resin layer, and a connecting conductor, which is formed within the insulated resin layers, for electrically connecting at least two of the wiring circuit patterns each other. The module component further includes an active component and a passive component, which are formed on at least one of the wiring circuit patterns and electrically connected thereto, and a coil formed within a laminated member. The coil is formed of a coil pattern made of a conductive material, and formed on the insulated resin layer. Magnetic materials, which are formed on the insulated resin layers, sandwich the coil pattern.
摘要:
A module includes a component, a circuit board having the component mounted thereon, a first grounding pattern formed on an outermost periphery of a surface portion of the circuit board; a first sealer provided on the circuit board and having a dimension projected on the circuit board, and a metal film covering the sealer and connected to the grounding pattern. The dimension of the first dealer is smaller than an outside dimension of the circuit board. The first sealer is made of first resin and sealing the component. The module has a low profile and is adequately shielded.
摘要:
A voltage converter module is formed by multi-layering a first connecting layer, a first inner wiring layer, a component built-in layer, a second inner wiring layer, a second connecting layer, and a capacitor-mounted layer, and a capacitor built-in layer with resin composite. A connecting terminal formed on a terminal surface of the first connecting layer, the first inner wiring layer, the second inner wiring layer and the capacitor-mounted layer are electrically coupled to each other through via-hole conductors. The second inner wiring layer couples a voltage converter IC to peripheral components, both being incorporated in the component built-in layer. A first capacitor and a second capacitor incorporated in the capacitor built-in layer are mounted to the capacitor-mounted layer. This structure forms a circuit, in which the first capacitor is coupled to the second capacitor, between the voltage converter IC and the grounding.
摘要:
A circuit board produced by the step of filling a via hole (102), formed in an insulating substrate (101), with a conductive material (103), the step of providing conductive layers (104) on the opposite surface of the insulating substrate, and the step of alloying the component materials of the conductive material with those of the conductive layer. The conductive material filled in the via hole provided in the insulating substrate and conductive layers on the opposite surfaces of insulating substrate are electrically and mechanically connected together so as to positively ensure a high reliability.
摘要:
A circuit board is manufactured by filling a via-hole formed in an insulating substrate with conductive material, disposing conductive layers on both sides of the insulating substrate, and forming alloy of component material of the conductive material with component material of the conductive layers. In the circuit board, therefore, the conductive material filled in the via-hole formed in the insulating substrate is securely connected electrically as well as mechanically to the conductive layers on both sides of the insulating substrate with high reliability.
摘要:
A module component which includes circuit substrate 3 having one or more components 1 on at least one of the surfaces, and junction circuit substrate 5 having hollow 4, or hole, disposed corresponding to the portion of the one or more components 1 mounted on the one surface of circuit substrate 3 for fitting the mounted components 1 in. These substrates are laminated to form a single body so that mounted components 1 is contained within the inside. The above configuration ensures high reliability in the layer-to-layer connection, and enables to mount a plurality of components densely with a high dimensional accuracy. Thus a highly reliable compact module component is offered.
摘要:
A small radio-frequency hybrid switch module is provided for switching between transmitted signals and received signals in plural frequency bands. This module includes: a laminated body including a dielectric layer; a diplexer; a switching circuit; a low pass filter (LPF); a conductive pattern provided on the dielectric layer for forming at least one of the diplexer, the switching circuit and the LPF; a surface acoustic wave (SAW) filter mounted on the laminated body; a cover provided on the SAW filter for forming a cavity which allows surface acoustic wave vibration and for hermetically sealing the cavity; and a semiconductor switching device mounted on the laminated body for forming a part of the switching circuit.