Method for contacting a flexible circuit board with a contact partner and arrangement comprising flexible circuit board and contact partner
AssigneeSiemens Aktiengesellschaft
InventorsFrank Franzen, Detlef Haupt, Josef Loibl
Life of this patent
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Abstract
A method for producing an electrical circuit between a flexible circuit board (1) is described, with single-sided access and a metallic contact partner (8), whereby the contact partner (8) reaches the metallic conductor strip (4) of the circuit board (1) through an access opening (6) in the unit. The circuit board (1) is thus irradiated with laser light (9) in a region opposite the access opening (6) causing a welded connection between the contact partner (8) and the conductor strip (4) to be formed.
Claims18
A method for producing an electrical connection between a flexible circuit board with single-sided access and a metallic contact partner, comprising the steps of:
- providing the flexible circuit board, comprising two insulating layers and at least one metallic conductor strip running in between, wherein in the first insulating layer of which there is formed an access opening exposing the conductor strip;
- bringing the metallic contact partner and the circuit board toward each other in such a way that the metallic contact partner is brought to bear against the metallic conductor strip through the access opening;
- and
- irradiating the second insulating layer with laser light at a location lying opposite the access opening, wherein a welded connection being formed between the contact partner and the conductor strip.
An arrangement comprising a flexible circuit board with single-sided access, a metallic contact partner and an electrical connecting point between the flexible circuit board and the metallic contact partner, in which the flexible circuit board is constructed from two insulating layers and at least one metallic conductor strip running in between,
- an access opening is formed in a first insulating layer,
- the metallic contact partner protrudes through the access opening and is welded there to the metallic conductor strip, and
- a fire damage region, brought about by the laser light irradiation used for the welding, is present in the second insulating layer, lying opposite the access opening.
A module for complete installation in an engine or a gearbox of a motor vehicle,
- with a control device which has an oiltight housing, in which an electronic circuit is accommodated,
- with a flexible circuit board, which is in electrical connection with the electronic circuit and is led to the outside through a sealing gap in the housing, and which is constructed from two insulating layers and at least one metallic conductor strip running in between, and which comprises an access opening is formed in a first insulating layer,
- with electrical terminals which are provided outside the control device and are connected as a contact partner to the flexible circuit board, wherein the metallic contact partner protrudes through the access opening and is welded there to the metallic conductor strip, and
- a fire damage region, brought about by the laser light irradiation used for the welding, is present in the second insulating layer, lying opposite the access opening.
Dependencies are inferred from the claim text.