| 摘要 |
PURPOSE:To enable two kinds of color sensitive bodies to be used with one CRT by providing a display screen with two kinds of red phosphor film stripes for a negative-positive-type sensitive body and a positive-positive-type sensitive body. CONSTITUTION:In a display screen 1, the symbol 11 represents a red fluorescent film stripe which is used for a negative-positive-type sensitive body, and is prepared from a fluorescent matter such as PbAl2O4:Cr or (Zn, Cd)S:Ag.BaO. 2SiO2:Mn; the symbol 12 represents a blue fluorescent film stripe, which is prepared from a matter such as Ca2B5O9Cl:Eu:ZnS:Ag or Ca2MgSiO7:Ce; the symbol 13 represents a green fluorescent film stripe, which is prepared from a matter such as Gd2O2S:Tb, Y3Al5O12Ce or Zn2SiO4:Mn. In addition, the symbol 14 represents a red fluorescent film stripe which is used for a positive-positive- type sensitive body, and is prepared from a matter such as Y2O3Eu, YVO4:Eu or Y2O2S:Eu. By using a color print CRT of such a constitution as above, two kinds of color sensitive bodies of the negative-positive-type and the positive-positive-type can be used by using the two red fluorescent films in different suitable situations. |
