Abstract: An object of the present invention is to provide fluorescent lamps used as a light source for liquid crystal display devices, which have excellent characteristics in terms of preventing solarization, the properties for blocking ultraviolet rays, and the physical and thermal strength, and preventing scratching. The present invention provides fluorescent lamps made of glass containing 55.0% to 75.0% of SiO2; 10.0% to 25.0% of B2O3; 1.0% to 10.0% of Al2O3; 0% to 3.8% of Na2O; 0% to 3.0% of Li2O; 3.0% to 10.0% of K2O; 3.2% to 16.0% of Na2O+Li2O+K2O; 0.5% to 8% of TiO2; 0.1% to 5% of CeO2; 0.6% to 8.1% of TiO2+CeO2; 0.001% to 0.05% of Fe2O3; 0% to 0.7% of Sb2O3; 0.1% to 3.0% of SnO2; and 0.5% to 10.0% of at least one rare earth element selected from the group consisting of Gd, Y, La, Yb and Lu by weight, and is characterized in that the coefficient of linear expansion in a temperature range of 30° C. to 380° C. is 34×10?7/° C. to 58×10?7/° C.

Abstract: An object of the present invention is to provide fluorescent lamps used as a light source for liquid crystal display devices, which have excellent characteristics in terms of preventing solarization, the properties for blocking ultraviolet rays, and the physical and thermal strength, and preventing scratching. The present invention provides fluorescent lamps made of glass containing 55.0% to 75.0% of SiO2; 10.0% to 25.0% of B2O3; 1.0% to 10.0% of Al2O3; 0% to 3.8% of Na2O; 0% to 3.0% of Li2O; 3.0% to 10.0% of K2O; 3.2% to 16.0% of Na2O+Li2O+K2O; 0.5% to 8% of TiO2; 0.1% to 5% of CeO2; 0.6% to 8.1% of TiO2+CeO2; 0.001% to 0.05% of Fe2O3; 0% to 0.7% of Sb2O3; 0.1% to 3.0% of SnO2; and 0.5% to 10.0% of at least one rare earth element selected from the group consisting of Gd, Y, La, Yb and Lu by weight, and is characterized in that the coefficient of linear expansion in a temperature range of 30° C. to 380° C. is 34×10?7/° C. to 58×10?7/° C.

Abstract: A vicinity part of a high-voltage feeding anode terminal, embedded in a funnel part and having a part thereof exposed on an outer wall surface of the funnel part, is washed with a hydrofluoric acid solution to remove a moisture-absorptive deposited substance adhering to the outer wall surface. According to a manufacturing method of this invention, anode leak failure due to unwanted discharge of the vicinity part of the high-voltage feeding anode can be restrained, and a projection cathode ray tube having an excellent display characteristic can be provided.

Abstract: A projection type cathode ray tube device includes a panel, a neck, a funnel connecting the panel to one end of the neck, and a stem closing the other end of the neck. An electron gun is housed in the neck for projecting an electron beam toward a phosphor screen on the panel. The neck includes a small-diameter neck portion disposed on its funnel side, a large-diameter neck portion disposed on its stem side, and a neck junction region connecting the small-diameter neck portion and the large-diameter neck portion. A deflection yoke is disposed in a vicinity of a transition region between the funnel and the small-diameter neck portion. A convergence yoke for generating a beam-convergence magnetic field is disposed to extend from the large-diameter neck portion and surround at least a portion of the neck junction region.

Abstract: A projection type cathode ray tube device includes a panel, a neck, a funnel connecting the panel to one end of the neck, and a stem closing the other end of the neck. An electron gun is housed in the neck for projecting an electron beam toward a phosphor screen on the panel. The neck includes a small-diameter neck portion disposed on its funnel side, a large-diameter neck portion disposed on its stem side, and a neck junction region connecting the small-diameter neck portion and the large-diameter neck portion. A deflection yoke is disposed in a vicinity of a transition region between the funnel and the small-diameter neck portion. A convergence yoke for generating a beam-convergence magnetic field is disposed to extend from the large-diameter neck portion and surround at least a portion of the neck junction region.