Glass spacer of particular composition and electron-beam emitting display device
AssigneeNippon Sheet Glass Co., Ltd.
InventorsMasahiro Morishita, Katsuya Kamisaku, Toshiaki Mizuno
Life of this patent
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Abstract
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 76×10−7/° C. to 92×10−7/° 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.
Claims7
A glass spacer for an electron-beam emitting display device composed of non alkaline glass which is substantially free of alkali, said non alkaline glass including:
- SiO2 of 10 to 35 percent by mass;
- RO of 20 to 60 percent by mass, wherein “R” refers to an alkaline earth metal;
- B2O3 of 9 to 30 percent by mass;
- and
- Al2O3 of 0 to 10 percent by mass, and
- said non alkaline glass having a linear expansion coefficient from 76×10−7/° C. to 92×10−7/° C.
Dependencies are inferred from the claim text.