Cathode ray tube having high and low refractive index films on the outer face of the glass panel thereof

A cathode ray tube comprising a vacuum enclosure including (1) a glass panel having an inner face and an outer face, said inner face being coated with a phosphor film to form a screen, (2) a neck portion housing an electron gun, and (3) a funnel portion connecting said glass panel and said neck portion;

• wherein the outer face of said glass panel is coated with a first layer, the first layer being an electrically conductive layer including at least one selected from the group consisting of electrically conductive metal oxide particles and metal particles, the first layer having a refractive index of 1.6 to 2.2, and said first layer is covered by a second layer having an outer surface, said second layer has substantially no light absorption, a refractive index of said second layer is smaller compared with a refractive index of said first layer, and the outer surface of said second layer is less rough compared with the surface of said first layer at the interface between said first layer and said second layer.

A cathode ray tube comprising a vacuum enclosure including (1) a glass panel having an inner face and an outer face, said inner face being coated with a phosphor film to form a screen, (2) a neck portion housing an electron gun, and (3) a funnel portion connecting said glass panel and said neck portion;

• wherein the outer face of said glass panel is coated with a first layer, the first layer being an electrically conductive layer including at least one selected from the group consisting of electrically conductive metal oxide particles and metal particles, and said first layer is covered by a second layer having an outer surface, said second layer has substantially no light absorption, a refractive index of said second layer is smaller compared with a refractive index of said first layer and is in a range of 1.3-1.58, and the outer surface of said second layer is less rough compared with the surface of said first layer at the interface between said first layer and said second layer.

A cathode ray tube comprising a vacuum enclosure including (1) a glass panel having an inner face and an outer face, said inner face being coated with a phosphor film to form a screen, (2) a neck portion housing an electron gun, and (3) a funnel portion connecting said glass panel and said neck portion;

• wherein the outer face of said glass panel is coated with an electrically conductive first layer including at least one selected from the group consisting of electrically conductive metal oxide particles and metal particles, the first layer having a refractive index of 1.6 to 2.2, and said first layer is covered by a second layer having an outer surface, said second layer has substantially no light absorption, a refractive index of said second layer is smaller compared with a refractive index of said first layer, the outer surface of said second layer is less rough compared with the surface of said first layer at the interface between said first layer and said second layer, and wherein a roughness Rz of said outer surface of said second layer is not more than 10 nm.

A cathode ray tube comprising a vacuum enclosure including (1) a glass panel having an inner face and an outer face, said inner face being coated with a phosphor film to form a screen, (2) a neck portion housing an electron gun, and (3) a funnel portion connecting said glass panel and said neck portion;

• wherein the outer face of said glass panel is coated with an electrically conductive first layer including at least one selected from the group consisting of electrically conductive metal oxide particles and metal particles, and said first layer is covered by a second layer having an outer surface, said second layer has substantially no light absorption, a refractive index of said second layer is smaller compared with a refractive index of said first layer and is in a range of 1.3-1.58, the outer surface of said second layer is less rough compared with the surface of said first layer at the interface between said first layer and said second layer, and wherein a roughness Rz of said outer surface of said second layer is not more than 10 nm.

A cathode ray tube comprising a vacuum enclosure, including a glass panel having an inner face and an outer face, said inner face being coated with a phosphor film to form a screen, a neck portion housing an electron gun, and a funnel portion connecting said glass panel and said neck portion, wherein the outer face of said panel is coated with a first layer, the first layer being an electrically conductive layer including at least one selected from the group consisting of electrically conductive metal oxide particles and metal particles, and said first layer is covered by a second layer having an outer surface, wherein said second layer has substantially no light absorption, and a refractive index of said second layer is smaller compared with a refractive index of said first layer, and wherein the number of projections and recesses per unit area of said outer surface of said second layer is less than the number of projections and recesses per unit area of an interface between said first layer and said second layer.

A cathode ray tube comprising a vacuum enclosure, including a glass panel having an inner face and an outer face, said inner face being coated with a phosphor film to form a screen, a neck portion housing an electron gun, and a funnel portion connecting said glass panel and said neck portion, wherein the outer face of said panel is coated with a first layer, the first layer being an electrically conductive layer including particles of precious metal, and said first layer is covered by a second layer having an outer surface, wherein a refractive index of said second layer is smaller compared with a refractive index of said first layer, and wherein the number of projections and recesses per unit area of said outer surface of said second layer is less than the number of projections and recesses per unit area of an interface between said first layer and said second layer.