Cathode ray tube having deflection power reducing shape
AssigneeSamsung SDI Co., Ltd.
InventorsBong-Woo Lee, Do-Nyun Kim
Life of this patent
Estimating the term…
Abstract
A cathode ray tube for reducing a deflection power without any BSN problem is disclosed. The cathode ray tube has a panel, a funnel having a deflection yoke on an outer periphery thereof, and a neck connected to the cone of the funnel. A phosphor screen is arranged on an inner surface of the panel. The funnel includes a body connected to the panel, and a cone connected to the body. The cone has a deflection power reducing shape which is formed to have a range of length 0.25×L from an end of the cone at the neck where L is an entire length of the cone measured along an axis of symmetry of the cathode ray tube.
Claims3
A cathode ray tube comprising:
- a panel, a phosphor screen being arranged on an inner surface of the panel;
- a funnel having a deflection yoke on an outer periphery thereof, including:
- a body connected to the panel;
- and
- a cone connected to the body, the cone having an outer periphery;
- and
- a neck, connected to the cone of the funnel, having an electron gun disposed therein,
- wherein the cone has a deflection power reducing shape formed in such a manner that the outer periphery of a portion of the cone has a predetermined curvature which is contiguous to the body and has a shape of an arc on a range from an end of the cone at the neck to a point on the outer priphery of the cone, where said arc has, a length 0.25×L measured along an axis of symmetry of the cathode ray tube from the end of the cone at the neck, where L is an entire length of the cone from the neck to the body measured along the axis of symmetry of the cathode ray tube.
Dependencies are inferred from the claim text.