Flip chip resistor and its manufacturing method
US6727798B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2002 |
| Grant date | Apr 27, 2004 |
| Priority date | — |
| Expiry date | Sep 3, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49099
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides for a flip chip resistor having a substrate having opposite ends, a pair of electrodes formed from a first electrode layer disposed on the opposite ends of the substrate, a resistance layer electrically connecting the pair of electrodes, a protective layer overlaying the resistance layer, and a second electrode layer overlaying the first electrode layer and at least a portion of the protective layer. The present invention provides for higher reliability performance and enlarging the potential soldering area despite small chip size.A method of the present invention provides for manufacturing flip chip resistors by applying a first electrode layer to a substrate to create at least one pair of opposite electrodes, applying a resistance layer between each pair of opposite electrodes; applying a first protective layer at least partially overlaying the resistance layer, applying a second protective layer at least partially overlaying at least a portion of the resistance layer, and applying a second electrode layer overlaying the first electrode layer and at least a portion of the second protective layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.