Patent · US Expired

Color picture tube

US4762733A · kind A · utility

12Cited by

2References

6Claims

0Family size

Assignee

Standard Elektrik Lorenz AG · DE

Inventors

Norbert Thiel · Annaberg-Buchholz, DE
Volker Gerstle · Lorsch, DE
Rolf Zondler · Stuttgart, DE
Otto Lederle · Eßlingen, DE

Key dates

Filing date	Mar 26, 1986
Grant date	Aug 9, 1988
Priority date	—
Expiry date	Mar 26, 2006

Classification

Technology area (CPC H)Electricity
CPC primaryH01J2229/882
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

In a color-picture tube, the conductive coating on the inside of the cone is a suspension without organic constituents. The conductive coating on the inside of the neck, which is contiguous to the conductive coating on the inside of the cone, consists of the aforementioned suspension with an addition of organic constituents. A sharp and scratch-resistant boundary between the conductive coating in the neck and the uncoated area of the neck is thus obtained.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.