Mask frame for cathode ray tube
AssigneeLG.Philips Displays Korea Co., Ltd.
InventorJe-Yun Bae
Life of this patent
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Abstract
In a mask frame for a cathode ray tube in accordance with the present invention, by satisfying 0.80≦a/(Xd/4)+b/(Yd/4)+c/(Dd/4)≦1.25, herein, Xd is a long side length of the mask frame, Yd is a short side length thereof, Dd is a diagonal length thereof, a is a height of the center of the long side thereof, b is a height of the center of the short side thereof, and c is a height of the corner portion, assembly can be facilitated, howling and drop characteristics can be improved, a width of a panel can be reduced, and accordingly the cathode ray tube can be slimed down and light-weighted.
Claims6
In a cathode ray tube comprising a panel having a fluorescent surface coated onto the inner surface, a funnel connected to the panel, a shadow mask installed with a certain interval from the fluorescent surface;
- and a mask frame for supporting the shadow mask, a mask frame for a cathode ray tube satisfies following equation;
- 0.80≦a/(Xd/4)+b/(Yd/4)+c/(Dd/4)≦1.25
- wherein Xd is a long side length of the mask frame, Yd is a short side length thereof, Dd is a diagonal length thereof, a is a height of the center of the long side thereof, b is a height of the center of the short side thereof, and c is a height of the corner portion thereof.
In a cathode ray tube comprising a panel having a substantially flat outer surface and a curved inner surface on which a fluorescent surface is coated;
- a funnel connected to the panel;
- a shadow mask installed with a certain interval from the fluorescent surface;
- and a mask frame for supporting the shadow mask, the mask frame for a cathode ray tube satisfies following equation;
- 0.80≦a/(Xd/4)+b/(Yd/4)+c/(Dd/4)≦1.25
- wherein Xd is a long side length of the mask frame, Yd is a short side length thereof, Dd is a diagonal length thereof, a is a height of the center of the long side thereof, b is a height of the center of the short side thereof, and c is a height of the corner portion.
Dependencies are inferred from the claim text.