Patent ID: 6239546
Filing Date: 2001-05-29
Classification: H01J

Abstract:
A color cathode-ray tube comprising an electron gun having a main lens comprising a focusing electrode and a final accelerating electrode, each of which has an opening portion on one end and a bottom having an electron-beam through-hole on the other end, the focusing electrode and the final accelerating electrode being arranged with their bottoms opposing each other at a predetermined distance,at least one of the focusing electrode and the final accelerating electrode having a field forming electrode plate inside the electrode at a position recessed from its bottom and a reinforcing electrode plate, the reinforcing electrode plate having a supporting portion and at least one opening through which an electron beam passes being connected to the opening portion side of said at least one of the focusing electrode and the final accelerating electrode, andthe reinforcing electrode plate being fixed to an insulating support with the supporting portion projecting further outside than a peripheral surface of the opening portion.