Panel method for cleaning the sealing land of a cathode ray tube faceplate
Abstract
Abstract A METHOD OF MANUFACTURING A CATHODE-RAY TUBE OF A TYPE COMPRISING A GLASS FACEPLATE PANEL SECTION TO BE FRIT SELAED TO ANOTHER ENVELOPE SECTION CONTAINING AN ELECTRON GUN SYSTEM FOR ENERGIZING A PHOSPHOR SCREEN DEPOSITED ON THE FACEPLATE PANEL SECTION, WHILE SUBSTANTIALLY PREVENTING LOCALIZED FAILURE OF THE FRIT SEAL BETWEEN THE SECTIONS UPON HIGH-VOLTAGE OPERATION OF THE COMPLETE TUBE. AFTER THE PHOSPHOR SCREEN IS FROMED, THE SEALING LAND OF THE FACEPLATE PANEL SECTION IS DIPPED IN A LIQUID CLEANING BATH WHICH IS ULTRASONICALLY AGITATED TO REMOVE RESIDUE FROM THE SCREEN FORMING PROCESS FROM THE SEALING LAND. THE SEALING LAND IS THEN RINSED WITH DEIONIZED WATER AND VACUUM DRIED. THE FACEPLATE PANEL SECTION IS THEN READY TO BE FRIT SEALED TO THE OTHER ENVELOPE SECTION CONTAINING AN ELECTRON GUN SYSTEM, COMPLETING THE MANUFACTURE OF THE CATHODE-RAY TUBE.
Inventors
- 👤 R Pekosh
Bibliographic Details
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