Abstract: A flat panel image display device includes a rear plate including plural electron emission elements, a face plate disposed opposed to the rear plate, fluorescent members being disposed on a surface of the face plate opposed to the rear plate, and the fluorescent members being covered with a metal back film, and a voltage applying unit to apply an acceleration voltage of 8 kV to 15 kV between the rear plate and the face plate. In addition, the metal back film has a getter material, and a current luminance characteristic of the fluorescent member satisfies ??0.9 if L=kl? , wherein L is luminance, l is an irradiation current, and k is a constant.

Abstract: Provided is an electron beam-excited blue phosphor, which is a rare earth-activated alkaline earth thiosilicate represented by a general formula M1xM22-xSi2OyS6-yRaz where M1 and M2 each represent an alkaline earth metal, Ra represents a rare earth ion Ce3+ or Eu2+, and x, y, and z satisfy relationships of 0?x?2, 0<y<6, and z?0.005, respectively.

Abstract: A substrate having a fluorescent member arranged on a pixel area in a plane of a surface of the substrate, wherein the fluorescent member emits light by an irradiation with an electron and comprises a first fluorescent member having a larger gamma value and arranged in the pixel area, and a second fluorescent member having a smaller gamma value and arranged at a peripheral of the first fluorescent member within the pixel area.

Abstract: A substrate having a fluorescent member arranged on a pixel area in a plane of a surface of the substrate, wherein the fluorescent member emits light by an irradiation with an electron and comprises a first fluorescent member having a larger gamma value and arranged in the pixel area, and a second fluorescent member having a smaller gamma value and arranged at a peripheral of the first fluorescent member within the pixel area.

Abstract: A phosphor represented by a general formula: M1xM22-xSi2O6Raz . . . (1) wherein, M1 and M2 are alkaline earth metals, x<2, Ra is Ce or Eu and 0.005?z?0.05), and wherein a variation of y-value of CIE chromaticity relative to the quantity of charge applied per unit area is dy/dQ?0.0001 and the y-value of CIE chromaticity is y?0.080.

Abstract: A flat panel image display device comprises: a rear plate including plural electron emission elements; a face plate disposed opposed to the rear plate, fluorescent members being disposed on a surface of the face plate opposed to the rear plate, and the fluorescent members being covered with a metal back film; and a voltage applying unit to apply an acceleration voltage of 8 kV to 15 kV between the rear plate and the face plate, wherein the metal back film has a getter material, and a current luminance characteristic of the fluorescent member satisfies ??0.9 if L=kl? (L is luminance, l is an irradiation current, and k is a constant). Thus, a high contrast can be acquired even if electrons scattered backward again bombard and penetrate into the fluorescent member.

Abstract: An object of the present invention is to provide a phosphor screen substrate in which various properties can be fulfilled, for example, withstand voltage properties are superior, white uniformity of display image is superior, and luminescence can be efficiently reflected toward the front side. A method for manufacturing a phosphor screen substrate, according to the present invention, comprises the steps of: forming a resin layer on a phosphor layer disposed on a substrate; heating the resin layer to a temperature in the range of from a glass transition temperature of a resin forming the resin layer to the melting point thereof; forming a metal film on the heated resin layer; and removing the resin layer provided with the metal film thereon by pyrolysis.

Abstract: A phosphor screen substrate is provided in which withstand voltage properties are superior, white uniformity of display image is superior, and luminescence can be efficiently reflected toward the front side. A method for manufacturing such a phosphor screen substrate includes the steps of forming a resin layer on a phosphor layer disposed on a substrate, heating the resin layer to a temperature in the range of from a glass transition temperature of a resin forming the resin layer to the melting point thereof, and forming a metal film on the heated resin layer. The resin layer provided with the metal film thereon is removed by pyrolysis.

Abstract: An object of the present invention is to provide a phosphor screen substrate in which various properties can be fulfilled, for example, withstand voltage properties are superior, white uniformity of display image is superior, and luminescence can be efficiently reflected toward the front side. A method for manufacturing a phosphor screen substrate, according to the present invention, comprises the steps of: forming a resin layer on a phosphor layer disposed on a substrate; heating the resin layer to a temperature in the range of from a glass transition temperature of a resin forming the resin layer to the melting point thereof; forming a metal film on the heated resin layer; and removing the resin layer provided with the metal film thereon by pyrolysis.