Color cathode ray tube

A color cathode ray tube comprising:

• a face panel;
• a phosphor surface covering the inner surface of the face panel and having a pattern of two or more kinds of pixel phosphors embedded in black matrix holes;
• a shadow mask mounted inside the face panel and close to the phosphor surface;
• an electron gun for emitting a plurality of electron beams in a line and
• means for deflecting the electron beams, emitted from the electron gun, horizontally and vertically, for color selection by the shadow mask such that the electron beams strike the phosphor surface to produce an image;
• wherein the shadow mask has electron beam passage apertures arranged in a pattern with the center-to-center distance between the adjacent electron beam passage apertures in a vertical direction greater than the center-to-center distance between the adjacent apertures in an inclined direction;
• and
• wherein the electron beam passage apertures in the shadow mask are non-circular with their vertical cross-section greater than their horizontal cross-section.

A color cathode ray tube comprising:

• a face panel;
• a phosphor surface covering the inner surface of the face panel and having a pattern of two or more kinds of pixel phosphors embedded in black matrix holes;
• a shadow mask mounted inside the face panel and close to the phosphor surface;
• an electron gun for emitting a plurality of electron beams in line;
• add
• means for deflecting the electron beams, emitted from the electron gun, horizontally and vertically, for color selection by,the shadow mask that the electron beams strike the phosphor surface to produce an image;
• wherein the pixel phosphors are arranged in a pattern with the center-to-center distance between the adjacent pixel phosphors of the same color in a vertical direction greater than the center-to-center distance between the adjacent pixel phosphors of the same color in an inclined direction;
• and
• wherein the shadow mask has non-circular electron beam passage apertures with their vertical cross-section greater than their horizontal cross-section.

A color cathode ray tube comprising:

• a face panel;
• a phosphor surface covering the inner surface of the face panel and having a pattern of two more kinds of pixel phosphors embedded in black matrix holes;
• a shadow mask mounted inside the face panel and close to the phosphor surface;
• an electron gun for emitting a plurality of electron beams in a line;
• and
• means for deflecting the electron beams, emitted from the electron gun, horizontally and vertically, for color selection by the shadow mask such that the electron beams strike the phosphor surface to produce an image;
• wherein the shadow mask has electron beam passage apertures arranged in a pattern with the center-to-center distance between the adjacent electron beam passage apertures in a vertical direction greater than the center-to-center distance between the adjacent apertures in an inclined direction;
• and
• wherein the black matrix holes are non-circular with their vertical cross-section greater than their horizontal cross-section.