TH37355A3 - Color cathode ray tube - Google Patents

Abstract

DC60 (21/05/42) Electron gun series of Cathode ray tube There is a main electron lens segment. Containing At least four electrodes The first, second, third and fourth grids are arranged as an order of the first, second, third and fourth grids. Central voltage is supplied to the fourth grid. And anode voltage Was sent to the fourth Grid. The second Grid and the third Grid were close to each other. It is connected by a resistor and a second and third voltages with relatively the same potential corresponding to higher voltages than the first, middle and lower, the anode voltages are supplied there, asymmetric lenses. Is held between the lens area The second of the second grid and the third grid are close to each other, and the voltages that change in a manner consistent with the magnetic field are supplied to the first grid, so it is possible to provide a ray tube. Cathode where deviations occur Deflection on the side of the electron beam Around the screen Formed by differences In the extension of the lens in the direction Horizontal and vertical paths are reduced. And which feature good images in the entire area of the screen Electron gun series Cathode ray tube There is a main electron lens segment. Containing At least four electrodes The first, second, third and fourth grids are arranged as an order of the first, second, third and fourth grids. Central voltage is supplied to the fourth grid. And anode voltage Was sent to the fourth Grid. The second Grid and the third Grid were close to each other. Is connected by a resistor and the second and third voltage With the same parallel potential corresponding to a higher than the middle one and below the anode voltage is supplied there, asymmetric lens Is held between the lens area The second of the second grid and the third grid are close to each other and the voltages which change in accordance with the magnetic field are supplied to the first grid, so it is possible to provide a ray tube. Cathode Where the phenomenon of deviations Deflection on the side of the electron beam In the area surrounding Jor. Caused by the difference in the magnification of the lens in the direction Horizontal and vertical paths are reduced. And which has good picture characteristics In all areas of the screen

Claims (1)

1. Cathode ray tube It consists of an electron beam forming and emitting an electron beam. At least one Electron gun series It has a primary electron lens portion for accelerating and focusing the electron beam and a lever for producing electric fields. For electrons The electrons are released from the electron gun in the horizontal and vertical direction on the screen, where the main electron portion consists of the first, second, third and fourth grids, the first central pressure is supplied. On the first Grid, the anode voltage was applied to the fourth Grid. Tagged Grid: