DocumentCode
2900005
Title
The decline of impregnated cathodes in CRTs
Author
Engelsen, Daniel Den ; Tong, Linsu
Author_Institution
LG Philips Displays, Eindhoven, Netherlands
fYear
2004
fDate
6-10 Sept. 2004
Firstpage
144
Lastpage
146
Abstract
In the 1990s, various CRT-companies introduced impregnated cathodes (I-cathodes) in color picture tubes (CPTs) in order to meet the requirements of good life performance at high beam currents. The initially successful introduction of I-cathodes in mass production did not result in a complete change over; on the contrary, I-cathodes are gradually phased out from CRTs. The reasons are the recent improvements of oxide cathodes, rather high cost of I-cathodes, sensitivity of I-cathodes for ion bombardment and electron optic considerations.
Keywords
cathode-ray tubes; oxide coated cathodes; I-cathodes; cathode ray tubes; color picture tubes; electron optic considerations; high beam currents; impregnated cathodes; ion bombardment; mass production; oxide cathodes; Cathode ray tubes; Costs; Current density; Displays; Electron beams; Electron guns; Electron optics; Glass; Mass production; Optical design;
fLanguage
English
Publisher
ieee
Conference_Titel
Vacuum Electron Sources Conference, 2004. Proceedings. IVESC 2004. The 5th International
Print_ISBN
0-7803-8437-7
Type
conf
DOI
10.1109/IVESC.2004.1414167
Filename
1414167
Link To Document