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:
Jan. 06, 1981
Filed:
Feb. 15, 1979
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Abstract
A slurry comprised of particulated glass-forming substances, with or without particulated relatively clear or light-colored metal oxides, dispersed in a photolacquer is applied as a uniform layer on a surface of a color image screen. Such layer is then developed via conventional photoforming techniques to produce sites or windows for phosphor dots and the resultant window-containing layer is heated, prior or subsequent to application of phosphor dots in such windows, at a temperature in the range of about 350.degree. to 500.degree. C. In instances where metal oxide particles are present in the slurry, the resultant layer becomes opaque or dark upon tempering and in cases where only pure glass-forming substance particles are in the slurry, the resultant layer becomes opaque or dark upon tempering in a reducing atmosphere. Electrical conductivity may be imparted to the light-absorbing coating by addition of selective conductive materials to the initial slurry.