Cathode ray tube with specifically shaped panel

A cathode ray tube comprising;

• a face panel with substantially flat outer surface and a curved inner surface, Wherein the peripheral thicknesses of a portion of said panel corresponding to a rectangular effective screen/image area are greater than the center thickness and have an interrelation of 0.75<Tv/Td<0.93 and 0.75<Th/Td<0.85, where
• Tv is the thickness at a point on the vertical boundary of the effective screen area, where a vertical axis passing the center of the screen crosses,
• Th is the thickness at a point on the horizontal boundary of the effective screen area, where a horizontal axis passing the center of the screen crosses,
• Td is the thickness at a point on the corner boundary of the effective screen area, where a diagonal axis passing the center of the screen crosses.

A cathode ray tube comprising:

• a panel having a curved inner phosphor-coated side, a substantially flat outer viewing screen side, and a rectangular-shaped effective screen area;
• a shadow mask facing the phosphor-coated side of the panel, the shadow mask being adapted to the curved shape of the phosphor-coated side;
• a funnel sealed to a rear of the panel;
• and
• a neck connected to the funnel, the neck having an electron gun therein;
• wherein the rectangular-shaped effective screen area of the panel comprises two horizontal sides, two vertical sides, and four corners, one corner at each intersection of a horizontal and vertical side, said horizontal sides being longer than said vertical sides;
• wherein the panel has a thickness Tv at the intersection of one of the horizontal sides and a vertical axis passing through the effective screen area, a thickness Th at the intersection of one of the vertical sides and a horizontal axis passing through the effective screen area, a thickness Td at the intersection of a diagonal axis passing through two of the corners, and a thickness Tc at an intersection of the vertical, horizontal and diagonal axes;
• wherein the thickness Tv and Td satisfy the following mathematical formula:
• 0.75≦Tv/Td≦0.93;
• wherein the thickness Th and Td satisfy the following mathematical formula:
• 0.75≦Th/Td≦0.85.

A cathode ray tube comprising;

• a face panel with a substantially flat outer surface and a curved inner surface, wherein a peripheral thickness along portions of a rectangular effective screen area of the panel are greater than a center thickness, and satisfy 0.75<Tv/Td<0.93 and 0.75<Th/Td<0.85, where
• Tv is a thickness at a point on a vertical boundary of the effective screen area where a vertical axis passing through a center of the effective screen area crosses,
• Th is a thickness at a point on a horizontal boundary of the effective screen area where a horizontal axis passing through the center of the effective screen area crosses, and
• Td is a thickness at a point on a corner of the effective screen area where a diagonal axis passing through the center of the effective screen area crosses.