Panel for wide-angle flat cathode ray tubes

A panel for wide-angle flat cathode ray tubes, comprising:

• a face part formed at the front part thereof for displaying a picture;
• a skirt part having a seal edge joined with the funnel;
• and
• a blend round part connected between the face part and the skirt part, wherein
• on the assumption that the compression stress of a center part, which is the center region of the face part, is σ1, the compression stress of an edge part, which is the edge region of the face part adjacent to the blend round part, is σ2, and the compression stress of the skirt part around the seal edge thereof is σ3,
• the panel is constructed such that the following inequality is satisfied:
• 1.5≦σ2/σ1≦2.33 and 0.63≦σ3/σ1≦1.32,
• the compression stress of the center part is set such that the following inequality is satisfied:
• 1.6 MPa≦σ1≦3 MPa,
• the compression stress of the edge part is set such that the following inequality is satisfied:
• 2.5 MPa≦σ2σ≦7.0 MPa, and
• the compression stress of the skirt part is set such that the following inequality is satisfied:
• 1.0 MPa≦σ3≦3.6 MPa.