Patent · US Expired

Color picture tube having a mask of a first material connected to a frame of a second material by plural weld spots

US6043597A · kind A · utility

1Cited by

2References

16Claims

0Family size

Assignee

Matsushita Electronics (Europe) GmbH · DE

Inventors

Heiko Fichtler · Notzingen, DE
Stefan Fischer · Lichtenfels, DE
Rolf Reidinger · Großenhain, DE
Werner Wolfram · Kirchheim unter Teck, DE

Key dates

Filing date	Jan 30, 1998
Grant date	Mar 28, 2000
Priority date	—
Expiry date	Jan 30, 2018

Classification

Technology area (CPC H)Electricity
CPC primaryH01J2229/0766
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A color picture tube having a mask-frame combination which consists of a rectangular frame of a first material and of a mask of a second material, wherein the mask is connected to the frame by a plurality of welding spots, and notches and decoupling slots whose dimensions have a specific ratio with one another are provided at both sides of welding spots at the shorter sides.

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