Process for collective manufacture of chips with electrodes selectively covered by a deposit

US5776791A · kind A · utility

Assignee

• COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR

Inventors

• Patrice Caillat · Grenoble, FR
• Gerard Nicolas · Saint-Égrève, FR
• Robert Teoule · Grenoble, FR

Key dates

• Filing date: Nov 12, 1996
• Grant date: Jul 7, 1998
• Expiry date: Nov 12, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C40B40/10
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

This process comprises the following steps: PA1 a) make a set of chips (110, 111, 112, 113) on a substrate (100), each chip including a number of electrodes (110a, 110b, 111a, 111b), PA1 b) individual validity test on each chip and the formation of at least one electrical network (117a, 117b) for addressable matched electrodes on different valid chips, PA1 c) make a deposit successively on matched electrode sets by dipping the substrate in an appropriate electrochemical bath and by application of appropriate voltages on the electrical network to cause an electrochemical reaction on the electrodes.