Structure of thin electroluminescent display panel sealed by glass substrates

Claim 1

A thin-film electroluminescent display panel comprising: first and second substrates bonded together and sealed so as to define a cavity therebetween, a composite comprising a thin-film electroluminescent layer interpositioned between a pair of dielectric layers, said composite being disposed within said cavity, at least one of said first and second substrates being transparent to light emitted by said electroluminescent layer when said layer is properly stimulated; at least one pair of opposing electrodes positioned so as to sandwich said composite therebetween, each of said pair of opposing electrodes comprising a first transparent porous electrode material, adjacent said at least one transparent substrate, contained completely within said cavity so as not to extend into or beyond said seal between said first and second substrates thereby preventing moisture from penetrating into said cavity, and a second metallic counterelectrode; a protective liquid provided within said cavity defined by said substrates and being in contact with said dielectric layers, and terminal means connected within said cavity to said respective transparent electrodes for providing a lead connection for said electroluminescent layer to a power source means outside said cavity, said terminal means comprising a metal and said respective transparent electrodes being longer than the length of said electroluminescent layer.