Flat panel for use in a cathode ray tube
AssigneeSamsung Corning Co., Ltd.
InventorKyoung Mun Choo
Life of this patent
Estimating the term…
Abstract
A flat panel of the present invention is provided with a mold match line which is formed in a manner that H2 (a distance between a first plane passing through the mold match line and a second plane tangent to an outer contour of the face portion and parallel to the first plane) satisfies the following equation: 8≦H2≦T1×2.24−D0.5×0.027 when T2/T1≦1.5 and D≦500 mm; 8≦H2≦T1+T1/6.42−D0.5×0.027 when T2/T1≦1.5 and 500 mm<D≦670 mm; and 8≦H2≦T1+T1/0.856−D0.5×0.027 when T2/T1≦1.5 and D>670 mm.
Claims6
A flat panel for use in a cathode ray tube, comprising:
- a face portion having a center portion for displaying picture images and a periphery portion;
- a skirt portion extending from the periphery portion of the face portion and having an seal edge on its back edge;
- a mold match line formed on an outer periphery of the skirt portion;
- and
- a blend round portion joining the face portion with the skirt portion, wherein a mean outer contour curvature radius is equal to or greater than 10,000 mm, a wedge rate is equal to or less than 1.5, a diameter length D of the center portion is equal to or less than 500 mm, and a distance H2 satisfies the following equation:
- 8≦H2≦T1×2.24−D0.5×0.027
- where the distance H2 is a distance between a first plane passing through the mold match line and a second plane tangent to an outer contour of the face portion and parallel to the first plane.
A flat panel for use in a cathode ray tube, comprising:
- a face portion having a center portion for displaying picture images and a periphery portion;
- a skirt portion extending from the periphery portion of the face portion and having an seal edge on its back edge;
- a mold match line formed on an outer periphery of the skirt portion;
- and
- a blend round portion joining the face portion with the skirt portion, wherein a mean outer contour curvature radius is equal to or greater than 10,000 mm, a wedge rate is equal to or less than 1.5, a diameter length D of the center portion is 500 mm<D≦670 mm, and a distance H2 satisfies the following equation:
- 8≦H2≦T1+T1/6.42−D0.5×0.027
- where the distance H2 is a distance between a first plane passing through the mold match line and a second plane tangent to an outer contour of the face portion and parallel to the first plane.
A flat panel for use in a cathode ray tube, comprising:
- a face portion having a center portion for displaying picture images and a periphery portion;
- a skirt portion extending from the periphery portion of the face portion and having an seal edge on its back edge;
- a mold match line formed on an outer periphery of the skirt portion;
- and
- a blend round portion joining the face portion with the skirt portion,
- wherein a mean outer contour curvature radius is equal to or greater than 10,000 mm, a wedge rate is equal to or less than 1.5, a diameter length D of the center portion is greater than 670 mm, and a distance H2 satisfies the following equation:
- 8≦H2≦T1+T1/0.856−D0.5×0.027
- where the distance H2 is a distance between a first plane passing through the mold match line and a second plane tangent to an outer contour of the face portion and parallel to the first plane.
Dependencies are inferred from the claim text.