Abstract:
A process for providing a metal-seeded liquid crystal polymer comprises the steps of providing a liquid crystal polymer substrate, applying an aqueous solution comprising an alkali metal hydroxide and a solubilizer, to etch the liquid crystal polymer substrate, and depositing an adherent metal layer on the etched liquid crystal polymer substrate using electroless metal plating or vacuum deposition of metal. When using electroless metal plating, a tin(II) solution applied to the liquid crystal polymer substrate, followed by application of a palladium(II) solution, provides a metal-seeded liquid crystal polymer. An aqueous solution, comprising from 35wt.% to 55wt.% of an alkali metal salt, and from 10wt.% to 35wt.% of a solubilizer, provides an etchant for the liquid crystal polymer at temperatures from 50°C to 120°C. A flexible circuit comprising a liquid crystal polymer film having through-holes and related shaped voids may be formed using the etchant compositions previously described.
Abstract:
A method, and structure formed thereof, for processing an exposed conductive connection between an thermal inkjet print head device (12) and a flexible tape circuit (15) connectable to control signals for driving the inkjet device. According to the method of processing, the exposed conductive connection (14, 16) is electrophoretically plated with a polymer (19) to protect it against corrosive damage by coupling the exposed conductive connection (14, 16) to a first voltage potential and immersing it into an electrophoretic polymer solution in contact with an electrode at a second voltage potential thereby establishing a current between the electrode and the exposed connection (14, 16) such that the exposed connection (14, 16) is coated with a thin film of polymer (19) of uniform thickness.
Abstract:
The invention relates to a module support (1), for electrical/electronic components (7), comprising a conductor arrangement with several metallic conductors (2), formed from a stamped grid and an insulating material shell (3) in which the metallic conductors (2) are at least partly embedded. At least one contact section (10) of a metallic conductor (2), for contacting a connector element (8) on an electrical/electronic component (7), is arranged in a through recess (6) in the insulating material shell (3). According to the invention, damage to the insulating material shell (3), on soldering the contact section (10), may be avoided, whereby the at least one contact section (10) of the metallic conductor (2) is completely removed from the shell of insulating material and is only electrically connected to a section (12) of the conductor (2), arranged on the inner wall of the recess (6), by means of at least one connector bridge (11), arranged in said recess (6). The heat-conducting cross-sectional area of the at least one connector bridge (11) is small, in such a way that, on a strong heating of the contact section (10), the connector bridge (11) causes a reduction in the flow of heat to the section (12) of the conductor (2) arranged on the inner wall of the recess (6), which has a larger heat-conducting cross-sectional area.
Abstract:
A bonded structure comprising a board provided with a through hole, a land disposed on the periphery of the through hole, and a lead led out from an electronic part and placed in the through hole. The land comprises an wall face land part on the wall face of the through hole, and front and rear surface land parts on the front and rear surfaces of the board. A fillet for connecting the land with the lead comprises upper and lower fillets parts touching the front and rear surface land parts, respectively, wherein the contour of the upper fillet is smaller than the contour of the lower fillet but larger than the size of the through hole. When a lead-free solder material is employed, occurrence of liftoff can be reduced effectively as compared with a conventional one.
Abstract:
An interconnection contact structure assembly including an electronic component (102) having a surface and a conductive contact terminal (103) carried by the electronic component (102) and accessible at the surface. The contact structure (101) includes an internal flexible elongate member (106) having first (107) and second ends (108) and with the first end (107) forming a first intimate bond to the surface of the conductive contact terminal (103) without the use of a separate bonding material. An electrically conductive shell (116) is provided and is formed of at least one layer of a conductive material enveloping the elongate member (106) and forming a second intimate bond with at least a portion of the conductive contact terminal immediately adjacent the first intimate bond.
Abstract:
According to a process for producing a thermal layout, not only massive heat sinks are provided for absorbing heat, but also an optimized number of thermoconductive strips which distribute the heat over the printed circuit board. In the collecting zones are arranged higher capacity sinks into which the heat is transmitted. The thermoconductive strips may be thermoconductors (TL) provided for that purpose and more massive than the conductive strips for the electric connections, or conductive strips for electric connections, the electroconductors (EL), may also be used for heat transfer. An optimum design interconnects the TL'S and EL's into a functional whole, a thermal management network. With a certain technique, which could be called pocket groove technique, "cooling channels" of a type may be created. Such thermoconductors may be included in the electric layout, so that a thermal layout is superimposed on the connection layout (TL/EL network). Heat distribution and transfer may thus be calculated and optimized by a computer in the same way as the electric distribution by the conductive strips, i.e. the known electric layout, which is produced by a computer-assisted process.
Abstract:
The invention relates to an electrical connection, especially a through contact, between at least two conductive layers, especially conductive tracks or the like on printed circuit boards, preferably multilayer printed circuit boards, with said connection formed by an electrically conductive track running transversely to the layers and contacting them. The connecting track is formed by a separately manufactured conductive connection section (6) subsequently applied to the printed circuit board (1) and is soldered to the layers (2).
Abstract:
본 명세서의 일 실시예는 양극, 음극 및 상기 양극과 음극 사이에 배치된 1층 이상의 유기물 층을 포함하는 발광부와 이의 외측에 위치하는 비발광부를 포함하는 기판, 상기 비발광부에 위치되는 2 이상의 연성인쇄회로기판, 및 상기 연성인쇄회로기판들 중 단부가 서로 이웃하는 것을 통전하는 납램부 및 와이어 본딩부 중 어느 하나 이상을 포함하는 유기 발광 소자를 제 공한다.