The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 23, 1986
Filed:
Aug. 06, 1984
Peter Mammach, Unterhaching, DE;
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
A gas discharge panel normally comprises a number of mutually parallel plates (1, 2, 3, 4) which are joined together at their edges by a glass solder forming a frame. At least some of the plates support operational electrodes (8, 9, 11, 12, 15) that are passed through the glass solder frame (16). Such a cell is normally first soldered together at about 450.degree. C., then fully cooled and subsequently baked at 320.degree. C. According to the invention, the baking is effected during the cooling phase; that is, the cell is held at the baking temperature for a while as it cools. Such a heat treatment is favorable in seveal respects: The baking temperature, which previously was limited by the temperature alternation stress, can be increased by at least 50.degree. C.; the total time required for the soldering and baking can be cut at least in half; and the electrodes (8, 9, 11, 12, 15) can no longer react with the ambient air between soldering and baking. By further carrying out the soldering in an inert gas atmosphere, reproducible results may be obtained even with sensitive electrodes. The gas discharge panel may be used as a flat picture screen where electrons are produced in a plasma and, after being post-accelerated to several kV, are directed onto a phosphor.