Coating support and method for the selective coating of conductive tracks on one such support
AssigneeAlchimer
InventorsChristophe Bureau, François Perruchot, Christophe Kergueris
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Abstract
The present invention concerns a lining support comprising a plurality of conductive pads (12) associated with a shared addressing contact (18) and means of selecting at least one pad to be lined by electrochemical means among the plurality of pads. In accordance with the invention, the selection means comprise means (20) of shifting a polarisation voltage, connected between the shared addressing contact and at least one pad to be addressed. Application to the lining of conductive pads.
Claims31
A lining support (10) comprising a plurality of conductive pads (12, 427, 418, 414′) formed on a substrate, associated with a shared addressing contact (18, 424) and means of selecting at least one pad to be lined by electrochemical means, among the plurality of pads (12, 427, 418, 414′), characterised in that the selection means comprise resident means (20, 422, 414, 427, 418) of shifting a polarisation voltage that needs to be applied to the shared addressing contact (18, 424) to obtain a deposit (429) respectively (434) at the level of a first group of pads (12, 427, 418) electrically coupled to the shared addressing contact (18, 424) without obtaining a deposit on a second group of pads (12, 418, 414′ 414′) electrically connected to the same shared addressing contact (18, 424).
A lining method for forming a support comprising lined conductive pads, in which one brings into contact the pads of the support with at least one medium (34) containing a lining material, or a precursor of a lining material, and one applies at least one polarisation voltage between a shared addressing contact (18) and a reference electrode (32), method characterised in that
- one forms the conductive pads of the support with a first conductive material and others with a second conductive material, or
- one forms on the support voltage shift means arranged between the common addressing contact and the first pads, in such a way that a voltage applied to the shared addressing contact corresponds to a first voltage value on the first pads and to a second voltage value on the second pads, or
- one applies to the shared addressing contact a sufficient voltage to initiate the lining of the first pads, and insufficient to allow the lining of the second conductive pads.
Dependencies are inferred from the claim text.