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18 August 1998 Kind of electrovacuo glass in a YAG display tube
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Yttrium-Aluminum-Garnet (YAG) single crystal has the properties of very well optical transparency and high thermal conductivity. By the method of liquid phase epitaxy, a continuous cathodoluminescent thin film with the characteristics of high brightness, high resolution and high contrast ratio can be grown on the YAG substrate. Whereas, the thermal expansion coefficient of YAG single crystal is about 75 X 10-7/ degree(s)C. It can only be sealed to 95% alumina ceramics previously. In this paper, a kind of low priced glass whose thermal expansion coefficient is approximate 75 X 10-7/ degree(s)C has been developed. This kind of glass can realize matched sealing to YAG single crystal, and have high absorption coefficient of soft x-ray (>= 80 cm-1 at 0.6 angstroms wavelength). It can take the place of alumina ceramics to manufacture YAG display tube envelope.
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Jianbo Cheng, Kangcheng Qi, Qunhua Wang, and Jun Wan "Kind of electrovacuo glass in a YAG display tube", Proc. SPIE 3560, Display Devices and Systems II, (18 August 1998);

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