Patent ID: 6844668
Filing Date: 2005-01-18
Classification: H01J

Abstract:
1. 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: 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.