Abstract:
Die Erfindung betrifft ein Verfahren zur leitenden Verbindung eines elektrischen Bauelementes mit wenigstens einer leitenden Schicht, wobei die leitende Schicht auf ein im sichtbaren Wellenlängenbereich des Lichtes im Wesentlichen transparentes Substrat aufgebracht wird, umfassend folgende Schritte: das elektrische Bauelement oder die leitende Schicht wird in dem Bereich, in dem das Bauelement mit der leitenden Schicht verbunden werden soll, mit einem Lotmaterial versehen; dem Lotmaterial wird Energie, die von einer Energiequelle abgegeben wird, zugeführt, derart, dass das Lotmaterial schmilzt und eine nicht lösbare, stoffschlüssige, leitende Verbindung zwischen dem elektrischen Bauelement und der leitenden Schicht ausgebildet wird.
Abstract:
A method for the formation of grooves (74, 85) in the surface of a polymer layer substrate (36, 46, 51, 65, 73, 83) by a direct write laser vaporization process, the polymer being selected, or modified by the addition of organic or inorganic material, so that it strongly absorbs wavelengths in the range 525nm to 535nm, the method comprising the steps: providing a laser beam (32, 42) with a wavelength in the range 525nm to 535nm that has diffraction limited or substantially diffraction limited beam quality and operates either continuously, quasi-continuously or Q- switched, using an optical system (35,45, 64, 72, 82) to focus the laser beam to a focal spot on the surface of the substrate, using a scanner (44, 63) to move the focal spot relative to an area on the substrate so the substrate surface is vaporized where it is exposed to the beam so as to form a groove with a depth that is less than the thickness of the polymer layer, controlling the scanner so as to change the position of the focal spot on the substrate whereby grooves having straight and curved portions along their length are written on the surface of the substrate, and regulating the power of the laser beam reaching the surface of the substrate so that the writing process is started and stopped whereby grooves of desired lengths are formed.
Abstract:
The present invention relates to a method for fabricating blackened conductive patterns, which includes (i) forming a resist layer on a non- conductive substrate; (ii) forming fine pattern grooves in the resist layer using a laser beam; (iii) forming a mixture layer containing a conductive material and a blackening material in the fine pattern grooves; and (iv) removing the resist layer remained on the non -conductive substrate. The method for blackening conductive patterns according to the present invention has, unlike a conventional method using chemical etching, advantages that productivity is enhanced as the process steps is simplified, environmental problem such as disposal of an etching solution is not generated as chemical etching is not used, and high resolution patterns with and superior conductivity and blackened degree can be fabricated.
Abstract:
The present invention provides a method for preparing a conductive pattern, comprising a pattern forming step of forming a conductive pattern on a substrate; and a blackening processing step of blackening the surface of the conductive pattern by immersing the conductive pattern in an aqueous solution containing reducing metal ions to oxidize the surface of the conductive pattern, and a conductive pattern prepared therefrom.
Abstract:
The invention relates to a method and device for reflow soldering strip conductors to components and to modules (4), which are attached to a printed circuit board (1) by means of a soldering paste. According to the invention, an absorption material is heated by radiating an electromagnetic wave during which the material absorbs this radiation, and this heating is transferred to the soldering paste for melting a solder contained in the soldering paste. The soldering paste is mixed with the absorption material to form a mixed material (3), and the mixed material is applied to the soldering points of the strip conductors (2).