Tab circuit design for simplified use with hot bar soldering technique
US6357864B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1999 |
| Grant date | Mar 19, 2002 |
| Priority date | — |
| Expiry date | Dec 16, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2203/1311
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention provides a printhead cartridge body contained within an inkjet printer which contains a tape automated bonding (TAB) circuit, having a unique architecture, electrically connected to a printhead heater chip and a printed circuit board (PCB). Moreover, the TAB circuit architecture is readily sealable by a variety of methods. The TAB circuit includes elongate apertures which have a length axis aligned perpendicular to electrical traces which run through the apertures. Each trace has a first end running through the apertures and being connected to a PCB by means of a hot bar soldering technique and the second end of the traces being connected to a printhead heater chip. An encapsulant layer substantially encloses the rectangular apertures and electrical connections preventing ink mist from contacting the connections. The TAB circuit design provides improvement in the manufacturing process and enables rework of connections without destroying the TAB circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.