Conductive focus waffle
US6528930B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2000 |
| Grant date | Mar 4, 2003 |
| Priority date | — |
| Expiry date | Sep 12, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2329/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A conductive focus waffle structure for focusing electrons emitted from a cathode portion of a flat panel display device. In one embodiment, the conductive focus waffle structure comprises a grid of material comprised of substantially orthogonally oriented rows and columns. The substantially orthogonally oriented rows and columns define openings therebetween having sufficient size to allow electrons emitted from a cathode portion of a flat panel display device to pass therethrough. The focus waffle grid further comprises a lower dielectric portion adapted to be coupled to the cathode portion of the flat panel display device and an upper conductive portion coupled to the lower dielectric portion, the upper conductive portion adapted to focus the electrons passing through the openings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.