Cathode in cathode ray tube
AssigneeLG. Philips Displays Korea Co., Ltd.
InventorByung Mook Weon
Life of this patent
Estimating the term…
Abstract
Disclosed is a cathode in a cathode ray tube including a cathode sleeve having a heater inside, a base metal supported by the cathode sleeve so as to be formed at an upper end of the cathode sleeve, and an emission layer formed on the base metal, wherein the emission layer includes alkaline earth metal oxide and Y2O3-doped ThO2. The present invention enables to prevent the degradation of endurance of the cathode by carrying out the generation and extinction of free Ba stably.
Claims5
A cathode in a cathode ray tube including a cathode sleeve having a heater inside, a base metal supported by the cathode sleeve so as to be formed at an upper end of the cathode sleeve, and an emission layer formed on the base metal, wherein the emission layer includes alkaline earth metal oxide and Y2O3-doped ThO2.
Dependencies are inferred from the claim text.