Patent · US Expired

Method for producing a flat gas discharge lamp

US6976896B2 · kind B2 · utility

1Cited by

2References

19Claims

0Family size

Assignee

Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH · DE

Inventors

Angela Eberhardt · Augsburg, DE
Michael Ilmer · Augsburg, DE
Michael Seibold · Schwäbisch Gmünd, DE

Key dates

Filing date	Jan 9, 2001
Grant date	Dec 20, 2005
Priority date	—
Expiry date	Sep 21, 2021

Classification

Technology area (CPC H)Electricity
CPC primaryH01J61/305
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A process for producing a discharge vessel of a flat gas discharge lamp, in which the discharge vessel has a base plate (1), a frame (3) and a cover plate (2), as well as at least one spacer (6) between base plate (1) and cover plate (2). At least between one of the plates (2) and the frame (3), at least one space (6) is initially kept open as a filling opening. By partial fusion of at least a part (4, 5) of the frame, which may also comprise a layer (4) of soldering glass and local elevations (5), the filling opening (6) is eliminated after the filling operation. The distance between the vessel plates (1, 2) is defined by the spacers (7), which remain hard even during the joining operation.

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