摘要:
A semiconductor device includes a structure in which a semiconductor element (chip) is mounted in a cavity formed in a wiring board with an adhesive interposed between the chip and a bottom surface of the cavity, and electrode terminals of the chip are connected via wires to wiring portions formed on the board around the cavity. The chip is mounted in close contact with a side wall of the cavity, the side wall being near a region where a wiring for higher frequency compared with other wirings within the wiring portion is formed. A recessed portion is provided in a region of the bottom surface of the cavity, and a thermal via extending from the bottom surface of the recessed to the outside of the board is provided, the region being near a portion where the chip is in close contact.
摘要:
A semiconductor device includes a structure in which a semiconductor element (chip) is mounted in a cavity formed in a wiring board with an adhesive interposed between the chip and a bottom surface of the cavity, and electrode terminals of the chip are connected via wires to wiring portions formed on the board around the cavity. The chip is mounted in close contact with a side wall of the cavity, the side wall being near a region where a wiring for higher frequency compared with other wirings within the wiring portion is formed. A recessed portion is provided in a region of the bottom surface of the cavity, and a thermal via extending from the bottom surface of the recessed to the outside of the board is provided, the region being near a portion where the chip is in close contact.
摘要:
A semiconductor device includes a structure in which a semiconductor element (chip) is mounted in a cavity formed in a wiring board with an adhesive interposed between the chip and a bottom surface of the cavity, and electrode terminals of the chip are connected via wires to wiring portions formed on the board around the cavity. The chip is mounted in close contact with a side wall of the cavity, the side wall being near a region where a wiring for higher frequency compared with other wirings within the wiring portion is formed. A recessed portion is provided in a region of the bottom surface of the cavity, and a thermal via extending from the bottom surface of the recessed to the outside of the board is provided, the region being near a portion where the chip is in close contact.
摘要:
An electronic apparatus includes a multilayer wiring structure having insulating layers and wiring layers which are stacked and having a surface on which an electronic component is mounted, a dipole antenna formed on a surface 13A of the multilayer wiring structure, a radiating plate disposed on the surface together with the dipole antenna, and a radiating path formed in the multilayer wiring structure and serving to transfer a heat generated in the electronic component to the radiating plate.
摘要:
A substrate and mask aligning apparatus includes a controlling portion 70 for calculating moving data that are applied to eliminate a difference between a present superposed state of the through holes 52 of the mask 50, which comes into contact with the substrate 20 that is loaded on the stage 30, on the pads 22 of the substrate 20 and a scheduled superposed state on the basis of image data from the shooting section 40, 42 and then executing repeatedly an operation to move the stage 30 on the basis of the calculated moving data of the stage.
摘要:
In a capacitor-mounted wiring board, a plurality of wiring layers each patterned in a required shape are stacked with insulating layers interposed therebetween and are connected to each other via conductors formed to pierce the insulating layers in the direction of thickness. A decoupling capacitor is electrically connected to a wiring layer used as a power supply line or a ground line in the vicinity of the wiring layer, and mounted such that, when a current is passed through the capacitor, the direction of the current is reversed to that of the current flowing through the relevant wiring layer.
摘要:
In a semiconductor device, via holes are formed around a chip buried in a package, and conductor layers are respectively formed to be connected to one end and another end of the conductor filled in the individual via hole. Portions (pad portions) of the conductor layers which correspond to the conductors are exposed from protective films, or external connection terminals are bonded to the pad portions. The chip is mounted with flip-chip technology so that at least some of electrode terminals thereof are electrically connected to the conductor layers.
摘要:
A semiconductor chip mounting board includes a base material made of resin; a metallized pattern formed on a surface of the base material which defines a die-pad area on which a semiconductor chip is to be mounted; and the metallized pattern comprising a plurality of zigzag shaped pattern lines along imaginary straight line segments radially, outwardly extending from a central position of the die-pad area. The metallized pattern may be a plurality of zigzag shaped pattern portions along imaginary concentric circles having a center at a central position of the die-pad area. Otherwise, the metallized pattern may be a plurality of closed loop shaped frames which are overlapped on each other in a zigzag manner.
摘要:
In an electronic parts packaging structure of the present invention constructed by stacking a plurality of sheet-like units in a thickness direction, each of the units includes a first insulating layer, wirings formed on one surface of the first insulating layer, a semiconductor chip (electronic parts) connected to the wirings, a second insulating layer formed on an one surface side of the first insulating layer to cover the semiconductor chip, and connecting portions (terminals and contact vias) for connecting electrically the wirings and wirings of other unit, wherein arrangement of the first insulating layer, the semiconductor chip, the wirings, and the second insulating layer is symmetrical between units adjacent in a thickness direction.
摘要:
A substrate and mask aligning apparatus includes a controlling portion 70 for calculating moving data that are applied to eliminate a difference between a present superposed state of the through holes 52 of the mask 50, which comes into contact with the substrate 20 that is loaded on the stage 30, on the pads 22 of the substrate 20 and a scheduled superposed state on the basis of image data from the shooting section 40, 42 and then executing repeatedly an operation to move the stage 30 on the basis of the calculated moving data of the stage.