ULTRAVIOLET EXCITATION PHOSPHOR, ELECTRON-BEAM EXCITATION PHOSPHOR, BLUE PHOSPHOR FOR COLLISION EXCITATION TYPE EL, METHOD FOR PRODUCING THIN FILM OF BLUE PHOSPHOR FOR COLLISION EXCITATION TYPE EL, FILMY EL ELEMENT, FILMY EL DISPLAY, AND FILMY EL LAMP

摘要

PROBLEM TO BE SOLVED: To provide an ultraviolet-excitation phosphor, an electron beam-excitation phosphor and a collision-excitation type phosphor, each obtained by using an extremely chemically stable compound or complex oxide as a matrix material and capable of attaining novel blue luminescence; a method for producing a phosphor thin film; a filmy EL element using the phosphor thin film as a luminescent layer; and a filmy EL display and an EL lamp, both obtained by using the filmy EL element.;SOLUTION: The ultraviolet excitation phosphor, the electron beam excitation phosphor and the collision excitation type phosphor are each characterized in that the matrix material obtained by adding gallium (Ga) as a constituent element to lanthanum trioxide (La₂O₃) includes at least bismuth (Bi) as an activator.;COPYRIGHT: (C)2011,JPO&INPIT