Electrohydrodynamic (EHD) printing for the defect repair of contact printed circuits
US9198299B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2012 |
| Grant date | Nov 24, 2015 |
| Priority date | — |
| Expiry date | Apr 1, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2203/173
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method is provided for repairing defects in a contact printed circuit. The method provides a substrate with a contact printed circuit formed on a substrate top surface. After detecting a discontinuity in a printed circuit feature, a bias voltage is applied to at least one of a first region of the printed circuit feature or a second region of the printed circuit feature. The bias voltage may also be applied to both the first and second regions. An electric field is formed between the bias voltage and an ink delivery nozzle having a voltage potential less than the bias voltage. Conductive ink is attracted into the electric field from the ink delivery nozzle. Conductive ink is printed on the discontinuity, forming a conductive printed bridge. Typically, the ink delivery nozzle is an electrohydrodynamic (EHD) printing nozzle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.