Abstract:
PURPOSE: A circuit board having a solder ball land type facing the center of the circuit board is provided to improve reliability of a solder ball coupling part, by preventing a crack from being generated on the solder ball coupling part and a pattern. CONSTITUTION: A plurality of ball lands(62) are in direct contact with a plurality of solder balls, respectively. A ball land open region(60) makes the ball land exposed from a solder mask(52), defined by a solder mask applied on a solder ball mounting surface(50). A plurality of pattern connecting parts(65) are connected to the ball lands, respectively. An interconnection pattern is electrically connected to the solder ball, connected to the pattern connecting part. The plurality of pattern connecting parts are disposed to face the center of the solder ball mounting surface.
Abstract:
A wiring substrate, a method for manufacturing the same, and a semiconductor device are provided to focus the solder of a lead-out wiring unit on a connection pad stably. A wiring board(10) includes a plurality of connection pads(22) and a plurality of lead-out wiring units(24). A lead-out wiring unit is connected to the connection pad. The lead-out wiring unit is arranged in an insulating layer of the surface layer. The lead-out wiring unit is bent from both ends of the rectangular connection pad respectively. The connection pad is arranged between the bending parts. The solder layer is formed on the connection pad. The solder layer is focused on the connection pad by the reflow heat of the solder on the connection pad and the lead-out wiring unit. The lead-out wiring unit is connected to the connection pad through the bending part.
Abstract:
반도체 장치는, 반도체 패키지(2)와, 반도체 패키지(2)에 땜납 범프(4)를 통하여 전기적으로 접속하는 랜드(8)를 갖는 실장 기판(5)을 구비하고 있다. 실장 기판(5)에는, 랜드(8)가 복수 배치된 열이 복수 형성되어 있다. 반도체 패키지 외연을 구성하는 주변에 각각 가장 가까운 측에 위치하는 열을 구성하는 랜드(8) 중 적어도 하나는, 랜드(8)로부터 실장 기판면을 따라 연장되는 배선(9)을 갖고 있다. 배선(9)은, 랜드(8)의 중심과 반도체 패키지(2)의 중심을 연결하는 선분보다도, 이 선분에 랜드(8)의 중심에서 직교하는 선분에 가까운 측에, 랜드(8)와의 연락부가 위치하도록 형성되어 있다. 반도체 패키지, 랜드, 땜납 범프
Abstract:
본 발명은 솔더 볼 랜드 타입이 회로 기판의 중심점을 향하도록 배열된 회로 기판 및 이를 이용한 볼 그리드 어레이(BGA) 패키지에 관한 것으로서, 솔더 볼 결합부와 패턴에서 크랙이 생기는 것을 방지함으로써 결합부의 신뢰성을 높인다. 본 발명에 따른 회로 기판은 반도체 칩이 실장되고 배선 패턴이 형성된 칩 실장면과 상기 배선 패턴과 전기적으로 연결되는 복수의 솔더 볼이 실장되는 솔더 볼 실장면을 갖는 회로 기판으로서, 상기 복수의 솔더 볼과 각각 직접 접촉되는 복수의 볼 랜드와, 상기 솔더 볼 실장면에 전체적으로 도포되는 솔더 마스크에 의해 정의되며 상기 볼 랜드를 상기 솔더 마스크로부터 노출시키는 볼 랜드 개방 영역과, 상기 볼 랜드 각각에 연결되는 복수의 패턴 연결부와, 상기 패턴 연결부와 이어져 있으며 상기 솔더 볼과 전기적으로 연결되는 배선 패턴을 포함하며, 상기 복수의 패턴 연결부는 모두 상기 솔더 볼 실장면의 중심점을 향하도록 배열되어 있다. 특히, 볼 랜드의 중심을 통과하는 지름 중 회로 기판의 중심점과 직각을 이루는 지름을 밑변으로 하고 지름의 양끝에서 중심점을 연결하는 선을 2개의 변으로 하는 삼각형으로 이루어지는 중심 지향 영역 안에 패턴 연결부가 존재하도록 설계한다.
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