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:
May. 11, 1982
Filed:
Oct. 05, 1979
Burkhard Littwin, Hohenschaeftlarn, DE;
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Abstract
A control plate for a flat plasma screen, comprising a carrier plate of multi-layer construction, having at least three layers, the middle layer of which is of metal and the outer layers of which are glass. In the manufacture of the control apertures which extend through the control plate, an etching procedure may be employed, involving a series of etching steps with different etching agents, whereby only slight underetchings arise and the control plate maintains sufficient mechanical stability, even with a medium overall thickness. The manufacture of the control apertures may also be effected by a laser-boring operation or the like, in which the metallic middle layer carries off heat developed during the operation, whereby no thermal fissure formations are created.