| 摘要 |
PURPOSE:To stretch a plural number of linear cathodes with less material, through less process, and with high accuracy, and remove the nonuniformity of a picture image which might be caused due to seams or brightness unevenesses by forming an electron-beam taking-out means and positioning members, which are parts of a plate-type image displayer, from the same base plate. CONSTITUTION:An electron-beam taking-out means 32, which works for taking out electrons discharged from electron discharging members 31, is provided with electron-beam passing holes 33 so that they correspond to the members 31. The member 31 is constituted from a metal wire 35 coated with an electron discharging matter 34, a supporting member 36 supporting the stretched metal wire 5, and a positioning member 37 used for achieving the positioning between the metal wire 35 and the electron-beam passing holes 32. In a cathode structure with such a constitution, the positioning between the metal wire 35 and the holes 33, since it can be controlled with the positioning mean 37, can be performed easily with high accuracy. In addition, by forming the means 32 and the members 37 from the same base plate, the linear cathodes 31 can be stretched with less material, through less process, and with high positional accuracy. |
