Fill member for electroluminescent panels

Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type

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Details

313512, 445 25, 445 43, H05B 3304, H05B 3310

Patent

active

048395579

ABSTRACT:
The present invention is directed to a modified cover plate for a thin film electroluminescent display device. The cover plate of the present invention is provided with at least two diagonally disposed fill holes and complementary fill tubes. In the upper plane of the cover plate, the fill holes each comprise two concentrically positioned recesses, the outer one of which is of larger diameter, but smaller depth than the inner. Conversely, the inner recess is of smaller diameter, but larger depth than its concentric counterpart. In the lower plane of the cover plate, the fill holes are each provided with a pair of concentrically positioned recesses which complement those in the upper plane. At the planar junction of each of the smaller diameter (inner) recesses there is formed a passageway through the cover plate. The fill tubes are designed to be retained by the fill holes without adversely impacting the dimensional thickness of the panel.

REFERENCES:
patent: 3330982 (1967-07-01), Dickson, Jr.
patent: 4213074 (1980-07-01), Kawaguchi et al.
patent: 4277143 (1981-07-01), Pauli et al.
patent: 4357557 (1982-11-01), Inohara et al.
patent: 4447757 (1984-05-01), Kawaguchi et al.
patent: 4618802 (1986-10-01), Schrank
J. Addy et al., IBM Technical Disclosure Bulletin, vol. 23, No. 11 (Apr. 1981).

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