Color cathode-ray tube

[0041] Hereinafter, embodiments of the present invention will be described in detail using drawings of the embodiments. figure 1 It is a side sectional view of main parts illustrating the specific structure of an in-line electron gun as an embodiment of the color cathode ray tube of the present invention, figure 2 When looking at the electron gun from a direction at right angles to the direction of the in-line arrangement figure 1 side view. in addition, image 3 It is a schematic diagram showing an example of a combination of electrodes forming an electrostatic quadrupole lens of an in-line electron gun for a color cathode ray tube according to the present invention. exist figure 1 and figure 2 Here, K is a cathode, G1 is a first electrode (control electrode), and G2 is a second electrode (accelerating electrode), and these cathode K to accelerating electrode G2 form an electron beam generating part. G3 is a third electrode, and a prefocus lens is formed by the third e...