Electric lamp and discharge devices – Cathode ray tube – Plural beam generating or control
Patent
1985-08-27
1986-12-23
DeMeo, Palmer C.
Electric lamp and discharge devices
Cathode ray tube
Plural beam generating or control
313447, 313451, 313456, H01J 2982, H01J 2950
Patent
active
046314431
ABSTRACT:
The novel electron gun comprises, as in prior guns, a plurality of cathode assemblies and at least two spaced successive electrodes having aligned apertures therethrough for passage of a plurality of electron beams. The cathode assemblies and the electrodes are individually held in position from a common ceramic member. The ceramic member has a first major surface and an oppositely disposed second major surface with a metallized pattern formed on at least a portion of each major surface. The electrodes are attached to the first major surface, and the cathode assemblies are attached to the second major surface. A transition member is attached to the metallized pattern on the first major surface. The transition member includes a substantially flat portion attached to the metallized pattern on the first surface and two upright portions substantially perpendicular to the flat portion and substantially parallel to each other. One of the electrodes is disposed between the upright portions and attached thereto so that the electrode is longitudinally spaced from the other electrode.
REFERENCES:
patent: 4298818 (1981-11-01), McCandless
patent: 4500808 (1985-02-01), McCandless
patent: 4520292 (1985-05-01), van Hekken et al.
patent: 4558254 (1985-12-01), Opresko
U.S. patent application Ser. No. 643,175, entitled, "Multibeam Electron Gun Having a Cathode-Grid Subassembly and Method of Assembling Same", filed on Aug. 22, 1984, by McCandless et al.
U.S. patent application Ser. No. 643,314, entitled, "Structure for and Method of Aligning Beam-Defining Apertures by Means of Alignment Apertures", filed on Aug. 22, 1984, by S. T. Villanyi.
U.S. patent application Ser. No. 735,261, entitled, "Multibeam Electron Gun Having a Transition Member and Method for Assembling the Electron Gun", filed on May 17, 1985, by H. E. McCandless.
"Multibeam Electron Gun Having Means for Positioning a Screen Grid Electrode", filed concurrently herewith by A. K. Wright; U.S. patent application Ser. No. 769,978.
"Multibeam Electron Gun Having Means for Positioning a Screen Grid Electrode Relative to a Main Focusing Lens", filed concurrently herewith by S. T. Opresko; U.S. patent application Ser. No. 769,970.
Coughlin Jr. Vincent J.
DeMeo Palmer C.
Irlbeck Dennis H.
RCA Corporation
Whitacre Eugene M.
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