Cathode ray tube with tension mask

A cathode ray tube, comprising:

• a panel with a substantially flat outer surface and an inner curved surface, the inner curved surface of the panel including a phosphor screen;
• a funnel connected to the panel while externally mounting a deflection unit for deflecting electron beams;
• a neck connected to the funnel while internally mounting an electron gun for emitting the electron beams;
• and
• a color selection apparatus internally fitted to the panel such that the electron beams land on correct phosphors of the phosphor screen,
• wherein the panel includes an effective screen with short and long axis while bearing a first thickness Th at the ends of the effective screen in the long axis direction and a second thickness Tv at the ends of the effective screen in the short axis direction, the second thickness Tv of the panel being established to be larger than the first thickness Th of the panel,
• wherein the color selection apparatus includes a mask with short and long axis while bearing a plurality of beam-guide holes, and a frame combined with the mask such that the mask maintains a tensioned state, the mask being tensioned in the long axis direction while being supported by the frame.

A cathode ray tube, comprising:

• a panel with a substantially flat outer surface and an inner curved surface, the inner curved surface of the panel including a phosphor screen;
• a funnel connected to the panel while externally mounting a deflection unit for deflecting electron beams;
• a neck connected to the funnel while internally mounting an electron gun for emitting the electron beams;
• and
• a color selection apparatus internally fitted to the panel such that the electron beams land on correct phosphors of the phosphor screen,
• wherein the phosphor screen is shaped with short and long axis, and the phosphors are longitudinally arranged at the phosphor screen in the long axis direction,
• wherein the color selection apparatus includes a mask with a plurality of beam-guide holes corresponding to the phosphors, and a frame combined with the mask accommodating the mask being tensioned in the long axis direction,
• wherein the electron beams emitted from the electron gun are directed toward the phosphor screen in line while being parallel to the short axis of the phosphor screen.