PURPOSE: To enhance extension of life such as long-time maintenance of high brightness characteristic of display device by adhering an electron radiating material mainly containing an alkali earth metal compound consisting of a first layer and a second layer on a linear heat resistant metal.
CONSTITUTION: As a cathode 4, an electrodepositing solution by an electron radiating material mainly containing an alkali earth metal compound such as barium, strontium, and calcium containing at least oxide barium are used in both a first layer 4a and a second layer 4b. In the first layer 4a, any one or two or more of aluminium oxide, titanium oxide, hafnium oxide, silicon oxide, niobium oxide and zirconium oxide are mixed to the above electrodepositing solution in the range of 2-10wt.%. In the second layer 4b layered on the first layer 4a and adhered thereto, 0.2-20wt.% of scandium oxide is mixed to the electrodepositing solution. These first layer 4a and second layer 4b are held on a cathode wire 3 in a determined thickness by electrodeposition method to form the cathode 4.
| JP2705997 | [Title of Invention] Gas Discharge Panel |
| JPS6147038 | THERMION CATHODE AND METHOD OF PRODUCING SAME |
| JPS58223235 | ELECTRON GUN |
FUKUYAMA KEIJI
SUZUKI RYO
ISHIDA SHIGEKO
SAITO MASATO
