Abstract:
A circuit carrier assembly includes a plurality of substrates directly secured together by an electrically conductive securing substance. In one example, the securing substance is a conductive epoxy. In another example, the electrically conductive securing substance is solder. Still another example includes a combination of solder and conductive epoxy. A non-conductive epoxy provides further mechanical connection and thermal conductivity between the substrates while also electrically isolating selected portions of the substrates in one example. The electrically conductive securing substance not only mechanically secures the substrates together and provides thermal conductivity between the substrates, which increases the thermal capacitance of the assembly, but also establishes at least one electrically conductive path between the substrates.
Abstract:
A process is disclosed for use in the manufacture of layered printed circuit board assembly having first and second layers with electrically conductive patterns thereon. The assembly has at least one inner layer between the first and second layers for receiving and retaining a surface-mount device inserted through aligned holes in the layers. The device has an electrically conductive cap at each end for electrical connection to the conductive patterns. The inner layer physically retains the surface-mount device in place pending the electrical connection of the end caps to the conductive patterns, and by virtue of its being inherently compliant and yielding, provides for physically retaining the surface-mount device in place pending the electrical and mechanical connection of the electrically conductive end caps to the conductive patterns.
Abstract:
In a printed circuit board wherein chip components are mounted in aligned holes provided through two printed substrates stacked over one another, spacer members are interposed between the printed substrates so as to define spaces therebetween around the holes. Since the printed substrates and chip components are movable relative one another due to such spaces, thermal stresses in the joints between the chip components and the printed substrates can be relieved.
Abstract:
Bei einem Verfahren zur Integration eines Bauteils (3) in eine Leiterplatte sind folgende Schritte vorgesehen: - Bereitstellen von zwei fertig gestellten, und insbesondere aus einer Mehrzahl von miteinander verbundenen Lagen bzw. Schichten (6, 7, 8) bestehenden Leiterplattenelementen (1, 4), wobei wenigstens ein Leiterplattenelement (4) eine Ausnehmung bzw. Vertiefung (10) aufweist, - Anordnen des zu integrierenden Bauteils (3) auf einem der Leiterplattenelemente (1) oder in der Ausnehmung des wenigstens einen Leiterplattenelements, und - Verbinden der Leiterplattenelemente (1, 4) unter Aufnahme des Bauteils (3) in der Ausnehmung (10), wodurch eine sichere und zuverlässige Aufnahme eines Bauteils bzw. Sensors (3) in einer Leiterplatte erzielbar ist. Darüber hinaus wird eine derartige Leiterplatte mit einem darin integrierten elektronischen Bauteil (3) zur Verfügung gestellt.
Abstract:
The present invention provides an electronic assembly 400 and a method for its manufacture 800, 900, 1000 1200, 1400, 1500, 1600, 1700. The assembly 400 uses no solder. Components 406, or component packages 402, 802, 804, 806 with I/O leads 412 are placed 800 onto a planar substrate 808. The assembly is encapsulated 900 with electrically insulating material 908 with vias 420, 1002 formed or drilled 1000 through the substrate 808 to the components' leads 412. Then the assembly is plated 1200 and the encapsulation and drilling process 1500 repeated to build up desired layers 422, 1502, 1702. Assemblies may be mated 1800. Within the mated assemblies, items may be inserted including pins 2202a, 2202b, and 2202c, mezzanine interconnection devices 2204, heat spreaders 2402, and combination heat spreaders and heat sinks 2602. Edge card connectors 2802 may be attached to the mated assemblies.
Abstract:
Die Erfindung bezieht sich auf eine Leistungselektroni-keinheit mit einem flächigen Keramiksubstrat 2, auf dessen einer Seite in Dickschichttechnik Leiterbahnen 6 zur elektrischen Verbindung von ebenfalls auf dem Kera-miksubstrat 2 befindlichen elektrischen Leistungsbauelementen 7 einer Schaltung angeordnet sind. Das Kera-miksubstrat 2 ist mit seiner anderen Seite mittels Hartlöten auf einem als Wärmespreizer dienenden metal-lischen Trägerelement 1 aufgebracht. Dabei ist das Trägerelement 1 wärmeleitend mit einem wärmeleitenden Gehäusebauteil 9 eines das Trägerelement 1 aufnehmenden Gehäuses verbunden. Auf der dem Keramiksubstrat 2 abgewandten Seite des Trägerelements 1 diesem Keramiksubstrat 2 etwa gegenüberliegend ist ein zweites Keramiksubstrat 4 etwa gleicher Abmessung wie das die Schaltung tragende Keramiksubstrat 2 mittels Hartlöten aufgebracht.
Abstract:
본 발명은 열 순환 매체를 구비한 인쇄회로기판 및 그의 제조방법을 개시한다. 개시된 본 발명의 인쇄회로기판은, 내부 회로배선을 구비하며 일면에 홈이 구비되고 상기 홈 저면에 다수의 돌기 패턴이 구비된 하판과, 상기 하판과 동일 구조를 가지며 홈 형성면이 서로 마주보도록 상기 하판과 합착된 상판과, 상기 하판과 상판의 홈들에 의해 만들어진 내부 공간에 주입되고, 상기 내부 공간에서 순환되어 열이 순환되도록 하는 유동성 액체로 이루어진 열 순환 매체를 포함하며, 상기 돌기 패턴은 상기 홈 보다 낮은 높이로 구비된 것을 특징으로 한다.
Abstract:
A multi-layer FPCB(Flexible Printed Circuit Board) and a method of manufacturing the same are provided to prevent the damage of a device of a module where the FPCB is mounted due to a compression force in compressing the FPCB. A multi-layer FPCB includes a bonding sheet(30), an upper base layer(10), a lower base layer(20), an upper coverlay(50), and a lower coverlay(60). The bonding sheet is formed with a width corresponding to a device of an objective module. The upper base layer(10) is contacted to an upper side of the bonding sheet(30) with the width of the bonding sheet(30). The lower base layer(20) is contacted to a lower side of the bonding sheet(30) with a larger width than the bonding sheet(30). The upper coverlay(50) is coated on the top of the upper base layer(10). The lower coverlay(60) is coated on the bottom of the lower base layer(60). The bottoms of the lower coverlay(60) and the lower base layer(20) include an attaching member for attaching the objective module.