Patent ID: 6949876

Claim:
A glass member for use in a cathode ray tube comprising a glass panel including a substantially rectangular face part and a skirt part having a seal end face at its opening end and side parts integral with a peripheral edge of the face part at almost right angles via a blend R part, wherein in an edge area between an edge of the seal end face of each side part and a position about 5 mm away from the edge along a tube axis, a thin edge part is formed to have a thickness decreasing part of which rate of thickness decreasing toward the edge is larger than a thickness decreasing rate of a standard shape toward the edge, wherein the standard shape is another part of the side part, adjacent to a root of the thickness decreasing part of the thin edge part, and having a constant or substantially constant thickness decreasing rate toward the edge capable of facilitating mold release and mold design of the side part.