Abstract:
PROBLEM TO BE SOLVED: To achieve good transmission characteristics of a signal across a wide band.SOLUTION: A semiconductor device (100) of the present embodiment comprises: a semiconductor chip (2); a plurality of external terminals (3); and a substrate (1). The substrate includes a first principal surface (1a) on which a plurality of first electrodes (7) electrically connected with the semiconductor chip are formed; a second principal surface (1b) on which a plurality of second electrodes (8) electrically connected with the plurality of external terminals are formed; and a plurality of wiring layers (LW1-LWn) which are formed between the first principal surface and the second principal surface and which form a plurality of signal paths for electrically connecting the first electrodes with the corresponding second electrodes. The wiring layer includes a plurality of metal components (12, 21, 45, 53_1-53_4) arranged in a dispersed manner at the periphery of a part where a structure of interconnections for forming the signal paths changes at intervals shorter than an electromagnetic wavelength (λ) corresponding to a signal band of a signal supplied to the signal paths.
Abstract:
PROBLEM TO BE SOLVED: To provide a wiring board in which projection electrodes can be arranged with equal intervals irrespective of the utilization state of an electrode pad on a semiconductor element to be mounted. SOLUTION: The wiring board is provided with an insulation base material 1, a plurality of conductor wirings 2a, 2b, and the projection electrodes 3 formed on each of the conductor wirings. The electrode pad of the semiconductor element can be connected to the conductor wiring via the projection electrodes. The conductor wiring can be connected to an external component in a connection terminal 11 of an end opposite to the projection electrode side, and includes the first conductor wiring 2a and the second conductor wiring 2b each having the projection electrode formed on the semiconductor mounting region 12. The first wiring extends from the projection electrodes to the connection terminal. The second wiring extends from the projection electrodes to a region which is out of the semiconductor mounting region and does not reach the connection terminal, and the end extending to the region out of the semiconductor mounting region is electrically separated from the first conductor wiring by a disconnection 13 formed on a boundary region between itself and the first conductor wiring. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
The invention relates to a flexible strip conductor connection, by means of which electrical connections between an electrical device (2) and an external component (1) can be made, wherein the strip conductors (8) are located in or on a flexible foil (3), which is clamped on the electrical device (2) as well as the external component (1). In a predetermined area in the course of the strip conductors (8), the flexible foil (3) has a loop (6), which can be filled with an elastic material perpendicularly in relation to the foil plane, or the strip conductors (8) in the plane of the foil respectively have a loop-shaped deviation (9) perpendicularly to the course of strip conductor.