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US 7,291,964 B2Granted
Color cathode ray tube
AssigneeLG. Philips Displays Korea Co., Ltd.
InventorSung Hun Kim
Life of this patent
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Abstract
The present invention relates to a color cathode ray tube and more specifically to a color cathode ray tube in which mechanical stress due to internal pressure made by evacuation is decreased. According to an aspect of the present invention, a cathode ray tube includes a panel on inner surface of which a phosphor screen is formed, a funnel joined to the panel, and an electron gun generating electron beams wherein the panel satisfies a condition: CFT/SET≦0.92 wherein CFT is thickness of central portion of the panel and SET is thickness of skirt portion of the panel.
Claims5
A cathode ray tube, comprising:
- a panel on an inner surface of which a phosphor screen is formed;
- a funnel joined to the panel;
- and
- an electron gun generating electron beams,
- wherein said panel satisfies a condition:
- 0.78≦CFT/SET≦0.92, and
- wherein the CFT is a thickness of a central portion of said panel and the SET is a thickness of a skirt portion of said panel.
4 more elements
Dependencies are inferred from the claim text.