Reinforcing band structure for cathode ray tube
AssigneeLG. Philips Displays Korea Co., Ltd.
InventorOh Yong Choi
Life of this patent
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Abstract
A cathode ray tube is mounted with a reinforcing band for improving landing stability of electron beams and howling of shadow mask and reinforcing an explosion-proof function.
Claims17
A cathode ray tube comprising a panel having a skirt portion formed on a peripheral portion of an effective surface and a seal edge portion at an end of the skirt portion connected to a funnel, a stud pin being formed on an inner surface of the skirt portion and a band being mounted on an outer surface of the skirt portion, wherein the outer surface of the panel is substantially flat, the inner surface of the panel has a predetermined radius of curvature, a ratio of a distance (b) from the seal edge portion to an end of the band to a distance (a) from the seal edge portion to a center of the stud pin satisfies a condition of 1.0<b/a<2.0.
A cathode ray tube comprising a panel having a skirt portion formed on a peripheral portion of an effective surface and a seal edge portion at an end of the skirt portion connected to a funnel, a stud pin being formed on an inner surface of the skirt portion and a band being mounted on an outer surface of the skirt portion, wherein the outer surface of the panel is substantially flat, the inner surface of the panel has a predetermined radius of curvature, transmittance at a central portion of the panel ranges from 45 to 75%, a thickness of the band is less than 2.0 mm, and a ratio of a distance (b) from the seal edge portion to an end of the band to a distance (a) from the seal edge portion to a center of the stud pin satisfies a condition of 1.2<b/a<1.8.
Dependencies are inferred from the claim text.