Abstract: An integrated grid (G1/G2) assembly having enhanced mechanical strength and rigidity is provided for use in an electron gun assembly of a cathode ray tube (CRT). In the integrated grid assembly, the first and second grids (35 and 40, respectively) are fixed in relationship to one another, both axially and radially, by means of an insulating element (50) and a collar element (55). Brazed joints are preferably provided at the interface of the insulating element (50) with the second grid (40) and the collar element (55) to enhance the mechanical strength and rigidity of the assembly. An integrated grid (G1/G2)/anode assembly may be provided by mounting anode assembly (45) fixedly with respect to second grid (40) by means of second insulating element (60) and second collar element (65). Methods for assembling the integrated grid assemblies are also disclosed.

Abstract: A very high resolution cathode-ray tube is provided with a combination cylindrical high voltage electrode and particle trap disk that is supported by a multiplicity of spring fingers from the interior wall of the cathode-ray tube neck. One set of the spring fingers contacts the high voltage coating on the interior of the cathode-ray tube envelope. The particle trap portion is provided with an aperture smaller than the adjacent circumferential edge of the lower voltage electron lens electrode in the adjacent electron gun structure, while the higher voltage electron portion is larger in diameter than the lower voltage electrode of the electron gun structure and overlaps the lower voltage electrode. A ring getter device is supported from the higher voltage electrode.

Abstract: A cathode and grid assembly includes a first grid of small diameter secured to a planar inner surface of a ceramic means and over a central opening in the ceramic means and a second grid having a first planar section secured to a planar outer surface of the ceramic means, a second planar section positioned within the central opening and a frustum of a cone section interconnecting the first and second planar sections with the frustum of a cone section extending along a frustum of a cone outer surface of the ceramic means.