Abstract:
PROBLEM TO BE SOLVED: To provide a space transformer for a probe card and a method of manufacturing the same.SOLUTION: There is provided a space transformer for a probe card, including: a substrate having a first surface and a second face facing each other; a plurality of first pads formed on the first surface to be spaced apart from each other and connected to a probe; a plurality of second pads formed on the second surface in positions corresponding to those of the first pads and receiving external electrical signals applied thereto; a plurality of via electrodes penetrating through the substrate and connecting between the first and second pads corresponding to each other; a ground layer formed to cover the second surface and provided with a plurality of second pad exposure holes; and an insulating layer formed to cover the ground layer and the plurality of second pads.
Abstract:
A wiring board includes a core substrate having a structure including an insulating base material and a large number of filamentous conductors densely provided in the insulating base material and piercing the insulating base material in a thickness direction thereof. Pads made of portions of wiring layers are oppositely disposed on both surfaces of the core substrate and electrically connected to opposite ends of a plurality of filamentous conductors in such a manner that the pads share the filamentous conductors. A wiring connection between one surface side and the other surface side of the core substrate is made through the pads. The insulating base material is made of an inorganic dielectric. Pads made of portions of the wiring layers are disposed on both surfaces of the core substrate and electrically connected only to corresponding one end sides of different groups each formed of a plurality of filamentous conductors.
Abstract:
PROBLEM TO BE SOLVED: To reduce the cost by making a core substrate common and to improve flexibility of wiring design by increasing wiring density. SOLUTION: A wiring board 30 includes the core substrate 10 having a structure in which a number of linear conductors 12 are closely provided penetrating an insulating base 11 along its thickness. On both surfaces of the core substrate 10, pads P1, P2 comprising parts of a wiring layer 22 having both ends electrically connected sharing a plurality of linear conductors 12 are arranged opposite each other, and wiring connections with one surface side and the other surface side of the core substrate 10 are formed through the pads. Further, an insulating base 11 is made of an inorganic dielectric, and pads P3, P4 which include parts of wiring layers 22 each electrically connected to only one end side of linear conductors 12 for each group of a plurality of linear conductors 12 are arranged on both surfaces of the core substrate 10. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
One ends of a plurality of interface pins are attached to a substrate in a line. Optical semiconductor device and an electric circuit are mounted on this substrate. The other ends of the interface pins are fit into holes in an another substrate. Signals are exchanged between the two substrates via the interface pins. The interface pins are embedded in a dielectric material. A plurality of ground pins and/or ground through holes may be provided in the dielectric material around the interface pins. The dielectric constant of the dielectric material is less than the dielectric constants of the two substrates.
Abstract:
본 발명은 서로 대향하는 제1 및 제2 면을 갖는 기판; 상기 제1 면에 서로 이격되어 형성되며, 프로브가 연결되는 복수의 제1 패드; 상기 제2 면 중 상기 제1 패드와 대응되는 위치에 형성되며, 외부로부터 전기적 신호가 인가되는 복수의 제2 패드; 상기 기판을 관통하며, 서로 대응되는 제1 및 제2 패드를 각각 연결하는 복수의 비아전극; 상기 제2 면을 커버하도록 형성되되, 복수의 제2 패드 노출공을 가지는 접지층; 및 상기 접지층과 상기 복수의 제2 패드를 커버하도록 형성된 절연층; 을 포함하는 프로브 카드용 공간 변환기를 제공한다.
Abstract:
코어기판(30)의 그랜드용스루홀(36E)과 전원용스루홀(36P)이 격자상으로 배설되고, X방향 및 Y방향에서의 유도기전력의 상쇄가 실행되므로, 상호 인덕턴스를 작게 하고, 고주파 IC칩을 실장했다고 해도 오작동이나 에러 등이 발생하는 현상이 없고, 전기특성과 신뢰성을 향상시킬 수 있다.