Abstract:
An electronic component mounting method for mounting a electronic component on a board, in which an Au bump provided at an electronic component is joined to a joining terminal formed on a board by using solder made of Sn or solder containing Sn and the electronic component is adhered to the board by means of thermosetting resin thereby to mount the electronic component on the board. The applied thermosetting resin is flown toward the outside by the lower surface of the electronic component, then a part of the solder particles contained within the thermosetting resin are made in contact with the side surfaces of the Au bumps which are heated to the temperature higher than the melting point of the solder and also another part of the solder particles are molten in a state of being sandwiched between the Au bumps and the electrodes. Thus, the diffusion of Sn into the Au bumps from the outside is promoted and so the density of Sn within the Au bumps can be increased. Further, the diffusion of Sn into the Au bump from a solder joining portion can be suppressed and so the generation of Kirkendall voids can be suppressed.
Abstract:
A column rotation coupler capable of solving the mismatch problem caused by thermal expansion, and a semiconductor device including the same are provided to absorb stress caused by difference of coefficient of thermal expansion by rotating a bearing joint of the column rotation coupler. A column rotation coupler(110) comprises a column joint and a bearing joint. The column joint comprises a ball supporter which is able to mount a solder ball type bearing joint. The bearing joint of the solder ball shape is mounted at the one side of the column joint, and attached to a semiconductor chip(200) or PCB(Printed Circuit Board)(300) within a semiconductor device(100).
Abstract:
A printed circuit board and a manufacturing method thereof are provided to decrease the thickness of the printed circuit board and to reduce total volume of a terminal, by mounting a circuit component in an insertion groove. A multi-layer substrate(50) has a number of stacked layers. A mounting space(42) is formed in a groove type having depth on the multi-layer substrate. A circuit component(40) is mounted by being inserted into the mounting space. A solder ball is attached to a connection pin of the circuit component, and contacts with a connection pin pad formed in the mounting space.
Abstract:
Provided is a method for manufacturing a printed-circuit board, which can form bumps at substantially identical heights on connection pads having different opening diameters of a solder resist. Diametrically-small bumps (78S), which are made high of solder balls (77) mounted in diametrically-small openings (71S) of a solder resist layer (70), are flattened to have the same height as that of the solder bumps (78P) of diametrically-large openings (71P). The solder bumps (78S) of the diametrically small openings (71S) and the solder bumps (78P) of the diametrically large openings (71P) are identical in the solder quantity. No connection occurs at the solder bumps (78S) of the diametrically small openings (71S) so that the connection reliability between an IC chip (90) and a multilayer printed-circuit board (10) can be retained.
Abstract:
An interpose and a semiconductor package using the same are provided to easily carry out wiring to an external input/output pin in terms of routing, through rewiring. A printed circuit board(210) has plural electric contacts(202) formed on an upper surface. An interposer is positioned on the printed circuit board, and has first and second surfaces facing each other, plural holes(232) extending through the first surface to the second surface, and plural electric terminals(231a) formed on the first surface. The interposer is on the printed circuit board in such a way that the holes correspond to the electric contacts. The electric contacts have first electric contacts formed on the printed circuit board to correspond to the holes one to one, and second electric contacts corresponding to the first electric terminals.
Abstract:
본 발명은 하우징의 강도를 저하시키지 않고 하우징 및 기판에서의 선팽창계수의 차를 흡수함으로써 납땜 크랙이나 휨의 발생을 방지할 수 있는 IC소케트를 제안하는 것을 과제로 하고 있다. 본 발명은 상기 과제의 해결수단으로, 하우징(20)의 상하면을 관통한 상태로 매트릭스상으로 배열된 콘택트 압입부 수용공(31)의 상면에 형성된 핀콘택트 수용개구부(32)의 소정 열간에는 하우징(20)의 상면에서 하면을 향하여 뻗는 바닥 부착 제1슬릿(50a)을 형성하고, 또 콘택트 압입부 수용공(31)의 하면에 형성된 납땜 볼 수용개구부(34)의 소정 열간에 제1슬릿(50a)이 형성되어 있지 않은 위치에는 하우징(20)의 하면에서 상면으로 뻗는 바닥 부착 제2슬릿(50b)을 형성하는 IC소케트를 제공한다. IC소케트, 슬릿, 콘텍트
Abstract:
본 발명은 저온에서의 접합 방법, 및 이를 이용한 반도체 패키지 실장 방법을 개시한다. 상세하게 상기 접합 방법은 주석, 및 은을 포함하는 제1 접합 조성물과 주석, 및 비스무스를 포함하는 제2 접합 조성물을 접촉한 후 적어도 170℃ 이상에서 열처리하여 접합부를 형성하는 단계를 포함한다. 접합 방법, 무연 솔더, 리플로우, 주석, 비스무스
Abstract:
고밀도 실장에 적합한 동시에 충분한 접합 신뢰성을 달성하는 것이 가능하며, 공정수가 적은 전극간 접속 구조체 형성 방법 및 이에 의해 형성되는 전극간 접속 구조체를 제공하는 것. 전극간 접속 구조체의 형성 방법에 있어서, 제 1 전극부(111)을 갖는 제 1 접속 대상물(110)에 대하여, 제 1 전극부(111)를 덮도록 수지막(130)을 형성하는 공정과, 수지막(130)에 대하여, 제 1 전극부(111)가 노출하도록 개구부(130a)를 형성하는 공정과, 금속(141)을 함유하는 금속 페이스트(140)를 개구부(130a)에 충전하는 공정과, 제 1 접속 대상물(110), 및 제 2 전극부(121)를 갖는 제 2 접속 대상물(120)을 개구부(130a)에 충전된 금속 페이스트(140)와 제 2 전극부(121)가 대향하면서 수지막(130)이 제 2 접속 대상물(120)에 접하도록 배치하는 공정과, 제 1 전극부(111) 및 제 2 전극부(121)가 금속(141a)을 거쳐서 전기적으로 접속되는 동시에 수지막(130)이 경화하도록 가열 처리를 행하는 접속 공정을 행하는 것이다. 전극간 접속 구조체, 반도체칩, 배선 기판, 땜납 페이스트, 땜납 분말, 플럭스 비어클, 범프
Abstract:
A method of electrically connecting a bump array package to a wiring board, comprising the steps of: arranging a thermofluidizing, thermosetting adhesive film on a surface of a bump array package having metal bumps; creating a bump array package having a flat surface comprising said metal bumps and said adhesive film, and connecting the bump array package to the wiring board by arranging the flat surface comprising said metal bumps and said adhesive film on the wiring board, and heating the adhesive film at a temperature high enough for finishing the setting of said adhesive film and higher than the melting temperature of said solder.