US 7,309,952 B2 · Flat panel with blend round portion structure for use in a cathode ray tube

Abstract

A flat panel for a cathode ray tube includes a faceplate portion, a skirt portion and a blend round portion joining the faceplate portion with the skirt portion. A point where an external contour of the faceplate portion meets an external blend round contour of the blend round portion is defined as a first point and a point where an external contour of the skirt portion meets the external blend round contour is defined as a second point. The external blend round contour is formed between an imaginary arc whose end points coincide with the first and second points and a line segment whose end points coincide with the first and second points, or is the line segment. The imaginary arc is smoothly connected to the external contours of the faceplate portion and the skirt portion at the first and the second point.

Claims7

Dependent claims

A flat panel for use in a cathode ray tube, comprising:

a faceplate portion for displaying images;
a skirt portion extended backward from a perimeter of the faceplate portion;
and
a blend round portion joining the faceplate portion with the skirt portion,
wherein, looking at a cross section of the panel, a point formed by an external contour of the faceplate portion and an external blend round contour of the blend round portion is defined as a first point and a point formed by an external contour of the skirt portion and the external blend round contour of the blend round portion is defined as a second point,
wherein the external contour of the blend round portion is a line segment whose two opposite end points coincide with the first and the second point.

3 more elements

Dependencies are inferred from the claim text.

Flat panel with blend round portion structure for use in a cathode ray tube

Life of this patent

Flat panel with blend round portion structure for use in a cathode ray tube

Life of this patent

Abstract

Claims7