Electron gun for CRT with helical multi-lens electrode assembly
AssigneeSamsung SDI Co., Ltd.
InventorsSang-mook Kim, Sang-kyun Kim, Duk-sung Park, Bong-wook Jung, Yeong-guon Won
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Abstract
An electron gun for cathode ray tubes (CRTs) with a helical multi-lens electrode assembly which is formed by coupling auxiliary electrodes to both ends of a helical resistive coil. The auxiliary electrodes have claws to be embedded in bead glasses, so that the helical resistive coil is mechanically supported in the electron gun. As a voltage is applied to the helical resistive coil through the auxiliary electrodes, multiple electron lenses are created due to voltage drops in each pitch of the helical resistive coil.
Claims10
An electron gun for a cathode ray tube with a helical multi-lens electrode assembly, comprising:
- a helical resistive coil;
- and
- two auxiliary electrodes, each of which is formed of a metal and is coupled to one respective end of the helical resistive coil, each auxiliary electrode having a claw to be embedded in bead glass to hold the helical resistive coil in the electron gun;
- wherein voltage drops occur in each pitch of the helical resistive coil, creating a plurality of electron lenses when voltages are applied to the auxiliary electrodes;
- and
- wherein each of the auxiliary electrodes has stepped hollow cylindrical extension at one end thereof, and the stepped hollow cylindrical extensions of each of the respective auxiliary electrodes are located within respective ends of the helical resistive coil.
Dependencies are inferred from the claim text.