Siemens Aktiengesellschaft

Michael Huber Gmbh

Hans-Fr Schmidt

Siegfried Rauchmaul

Juergen Bednarz

Hanns-Heinz Peltz

Horst Scheffler

Karl-Heinz Horsmann

Ralf Criens

Ferdinand Quella

Eddy Roelants

Antoon Mattelin

Luc Boone

Helmut Hadwiger

Marc De Vogelaere

Sybille Von Tomkewitsch

Milan Prochazka

Pol Pecceu

Juergen Frankel

A component or assembly is accommodated in a housing formed of at least two joined housing parts. Terminal legs are conducted toward the outside of the housing. In order to enhance a sealing effect, and thus for protection against internal corrosion, an outside encapsulation of a thermoplastic plastic is applied to the housing by injection molding at least in the region of the joints of the housing and in the exit region of the terminal legs. Particularly given the hermetically tight encapsulation of surface-wave filters, encircling sections having a low wall thickness are provided on the housing parts in their peripheral regions, these sections being fused to the outside encapsulation.

Method and an encapsulation for encapsulating electrical or electronic

A solder resist and a positively-acting photoresist are successively applied on a surface-wide basis onto a printed circuit board, whereupon the photoresist is selectively exposed and developed in the region of plated-through holes and/or solder pads of a printed conductor pattern carried on the printed circuit board, preferably with the assistance of laser beams. Subsequently, the solder resist is stripped in the regions not protected by the photoresist, i.e. in the regions of plated-through holes and/or solder pads and, as a last step, the remaining photoresist is likewise stripped. The method is particularly suited for the application of a solder resist layer onto three-dimensional printed circuit boards since traditional mask techniques for structuring the solder resist cannot be employed with respect to three-dimensional printed circuit boards.

Method for applying a solder resist layer to a printed circuit board

Method for encapsulating electronic components or assemblies using a

A three dimensional printed circuit board having at least two rigid board sections capable of being arranged in different planes and flexibly connected by connecting sections between adjacent board sections is manufactured as a one-piece injection molded part of a thermoplastic molding material. The flexible connecting sections are fashioned as thin regions having a thickness less than the thickness of the rigid board sections. When a semi-crystalline or liquid-crystalline thermoplastic molding material is used, the connecting sections are formed as flexible film hinges, whereas an amorphous thermoplastic molding material results in the connecting sections being bendable only under the influence of heat.

Three-dimensional printed circuit board

A method and coating material for applying electrically conductive printed patterns to insulating substrates is provided. The coating material includes a non-metallic, grainy carrier substance having metal of the oxidation degree 0 applied thereto. An energy radiation source, particularly of a deflectable laser beam, is used to secure anchoring of the carrier substance to the substrate in the region of the desired printed pattern. As a consequence of a three-dimensional arrangement of the metal, a three-dimensional nuclei distribution is produced that leads to a reliable and fast metallization of the printed pattern on the basis of chemical metal deposition. The method of the invention is especially suited for laser pattern transfer for the manufacture of printed circuit boards.

Method and coating material for applying electrically conductive printed

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Eurasburg, Germany

Hans-Fr Schmidt