Glass sealed thin-film electroluminescent display panel free of moisture and the fabrication method thereof

A thin-film electroluminescent display panel comprising:

• a pair of non-conductive substrates disposed to define a cavity therebetween;
• a composite comprising a thin-film electroluminescent layer sandwiched between a pair of dielectric layers containing pin holes, said composite being disposed within said cavity, at least one of said pair of substrates being transparent to the light emitted by said electroluminescent layer when activated;
• a pair of opposing electrodes positioned to define said composite therebetween;
• a protective liquid disposed within said cavity defined by said substrates and being in contact with the dielectric layers, such that said protective liquid impregnates said pin holes in said dielectric layers, said protective liquid being inert with respect to the thin-film electroluminescent layer and said dielectric layers, resistant to high voltage, high humidity, high temperature, and having a small vapor pressure and a small coefficient of thermal expansion, said protective liquid further including a bubble formed therein having a volume which functions to compensate for the cubic expansion rate of said protective liquid due to an increase in temperature;
• and
• absorbing means within said cavity for absorbing moisture contained within said protective liquid.

A thin-film electroluminescent display panel comprising:

• a pair of non-conductive plane substrates, at least one of which is transparent glass substrate disposed to define a cavity therebetween;
• a composite comprising a thin-film electroluminescent layer sandwiched between a pair of dielectric layers containing pin holes, said composite being disposed within said cavity, said transparent glass substrate being transparent to light emitted by said electroluminescent layer when activated;
• a pair of opposing electrodes positioned to define said composite therebetween;
• spacer means provided between said pair of substrate for determining the position of said substrates relative to each other;
• a protective liquid disposed within said cavity defined by said substrates and being in contact with said dielectric layers, at least one hole being formed in one of said substrates for introducing said protective liquid into said cavity, said protective liquid impregnating said pin holes in said dielectric layers, said protective liquid being inert with respect to said thin-film electroluminescent layer and said dielectric layers, resistant to high voltage, high humidity, high temperature and having a small vapor pressure and a small coefficient of thermal expansion, said protective liquid further including a bubble formed therein having a volume which functions to compensate for the cubic expansion rate of said protective liquid due to an increase in temperature;
• and
• absorbing agents dispersed within said spacer means for absorbing moisture contained within said protective liquid.