Color cathode ray tube
US5572084A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 1994 |
| Grant date | Nov 5, 1996 |
| Priority date | — |
| Expiry date | Nov 2, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J29/503
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A color cathode ray tube equipped with an in-line electron gun includes a main lens made up of two cylindrical electrodes arranged in a spaced relationship. Each of the electrodes has an opening and having therein a plate electrode with a beam passing area. The electrodes are given different voltages, wherein the D and S values are in the region where all of the following inequalities are satisfied; PA1 5.0>S, PA1 D>S, and PA1 55S-20D.gtoreq.145.5 S being a beam spacing between central axes of adjacent electron beams, and D being a diameter in a direction perpendicular to an in-line arrangement of the electron beams, of the cross section of an opening at opposing ends of the electrodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.