An electron beam excitation display element and the display element for an electron beam excitation

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A glass spacer for an electron-beam emitting display device is composed of non alkaline glass having almost the same linear expansion coefficient as that of soda-lime-silica glass. The glass includes SiO2 with 10 to 35 percent by mass, RO, in which "R" refers to an alkaline earth metal, with 20 to 60 percent by mass, B2O3 with 9 to 30 percent by mass and Al2O3 with 0 to 10 percent by mass, and which is substantially free of alkali. The linear expansion coefficient of the glass spacer is in a range from 76x10-7/° C. to 92x10-7/° C. The glass spacer may further include La2O3 with 0 to 30 percent by mass, ZnO with 0 to 8 percent by mass and TiO2 with 0 to 5 percent by mass.