Abstract:
A thermocurable electroconductive adhesive sheet which is able to make an electric connection having mechanical, thermal and electric stability, and low resistance, produced by a simple and easy process is provided.
Abstract:
A circuit board (10) comprises a first substrate (11) with a predetermined wiring pattern (16) and a second substrate (12) with a predetermined wiring pattern (17), and they are connected together electrically and/or mechanically and bent in the connection. The connection includes a foldable joint material (13) composed of a thin base film (20) holding a plurality of parallel leads (14), and the joint material (13) connects the first and second substrates (11, 12) together.
Abstract:
After adhesive is applied to metal wiring, metals of the metal wiring film dissolve as ions into the adhesive as a change with time. Especially, when the adhesive is mainly composed of a polyester resin, the adhesion and insulation degrade because of free metal ions when left in a high-temperature environment or in a high-temperature high-humidity environment. An adhesive according to the invention contains an anion-capturing agent to capture free metal ions in the adhesive, enabling production of a highly endurable flat cable immune from adhesion degradation and insulation deterioration.
Abstract:
There is described a process for producing printed circuits comprising a laminar support (1), at least one electrically conductive track (7) on the said laminar support, and at least one auxiliary conductive element (21) soldered to the said conductive track (7); there is provision to apply the said auxiliary conductive element by means of an apparatus for applying SMD components.
Abstract:
Battery (1) of rechargeable cells (2) arranged in a matrix, comprising a connection board (3) between terminals (4, 5) arranged in a face of the battery (1) and provided with connection tracks (6), the terminals (4, 5) being connected by means of cables (7) and by means of welding to said connection tracks (6), the connection board (3) being provided with openings (8) for accessing said terminals (4, 5) through the connection board (3), wherein the board (3) is a printed circuit board, the tracks (4) are on the surface of the board (3) not oriented towards the cells (2), the cables, wires o strips made of electrical conductive alloys (7) connect the terminals (4, 5) to the connection tracks (6) through said openings (5); and the welding is an ultrasound, laser or electric welding. It also relates to a manufacturing method of such battery.
Abstract:
Intersection structures are provided to reduce a strain in a conformable electronic system that includes multi-level arrangements of stretchable interconnect structures. Bypass regions are formed in areas of the stretchable interconnect structures that may ordinarily cross or pass each other. The bypass regions of the stretchable interconnects are disposed relative to each other such that the intersection structure encompasses at least a portion of the bypass regions of each stretchable interconnect structure. The intersection structure has elastic properties that relieve a mechanical strain on the bypass regions during stretching at least one of the stretchable interconnect structures.
Abstract:
Durch die vorliegende Erfindung werden ein Verfahren zur Herstellung eines Leiterplattenelements sowie ein entsprechendes Leiterplattenelement bereitgestellt, mit welchem es möglich ist, die Delaminationsgefahr im Bereich eines im Leiterplattenelement eingebetteten Bauelements (z. B. Draht oder plattenförmiges Formteil) zu unterbinden. Hierzu schlägt die Erfindung vor, dass die Oberfläche des Bauelements zumindest teilweise aufgeraut ist, um einen besseren Haftverbund mit der umgebenden Deckschicht (z. B. Prepreg aus Isolierstoffmasse) zu gewährleisten. Die Aufrauung der Bauelementoberfläche kann dabei durch chemische Verfahren wie z. B. Ätzen oder auch rein mechanische Verfahren wie z. B. Sandstrahlen erfolgen.