Electron gun for cathode ray tube
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsYuji Taguchi, Masahiko Konda
Life of this patent
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Abstract
A electron gun has a plurality of arranged tubular electrodes for passing electron beams inside the tubular electrodes, and the tubular electrodes are fixed to support rods respectively by support members. At least one of the tubular electrodes is separated into two parts, and the separated two tubular electrode parts are connected electrically with each other by a coil member provided therebetween. The coil member is composed of a wire with its tip ends being located within the spaces formed by the support members. A desired electron beam modulation effect can be provided without interrupting transmission of a modulation magnetic field from the exterior, and also electric field emission of electrons from the tip ends of the coil member is suppressed.
Claims8
An electron gun for a cathode ray tube comprising a plurality of tubular electrodes arranged for passing electron beams inside the tubular electrodes and for accelerating and focusing electron beams, the tubular electrodes being fixed to support rods respectively by support members, wherein
- at least one of the tubular electrodes is separated into two parts, and the separated tubular electrode parts are connected electrically with each other by a coil member provided therebetween, and
- the coil member is composed of a wire with its tip ends being located outside of a tubular shape of the coil and within spaces formed by the support members.
An electron gun comprising a plurality of tubular electrodes arranged for passing electron beams inside the tubular electrodes, the tubular electrodes being fixed to support rods respectively by support members, wherein
- at least one of the tubular electrodes is separated into two parts, and the separated tubular electrode parts are connected electrically with each other by a coil member provided between thereof,
- the coil member before being assembled into an electron gun has an inner diameter that is substantially the same as or smaller than an outer diameter of the separated tubular electrode parts, and
- the end portions of the separated tubular electrode parts are inserted into the coil member, so that the tubular electrode parts and the coil member are fitted and fixed to each other.
Dependencies are inferred from the claim text.