Metal working – Method of mechanical manufacture – Electrical device making
Patent
1979-10-30
1981-03-17
Husar, Francis S.
Metal working
Method of mechanical manufacture
Electrical device making
350331R, 350334, G02F 113
Patent
active
042558484
ABSTRACT:
A set of passive display cells are manufactured by providing two superimposed glass plates on which there has been deposited groups of conductive layers in a matrix configuration. A peripheral closed belt of thermoplastic material is provided between the two plates and a set of open belts of thermoplastic material having openings is provided surrounding the groups of conductive layers. The closed belt is sealed so as to realize a closed space between the two plates. In a vessel where there is a higher pressure, the softening of the closed and open belts is produced. The two plates are then brought closer to each other under the effect of the overpressure up to a distance determined by spacing elements contained in the material of the open belts which material then is hardened. A side of the outer belt is eliminated and the cells are filled with a liquid crystal under vacuum. The cells then are separated from each other still under vacuum, and the openings of the open belts are closed.
REFERENCES:
patent: 4070749 (1978-01-01), Misono et al.
patent: 4094058 (1978-06-01), Yasutake et al.
patent: 4183629 (1980-01-01), Nishimura et al.
Freer William G.
Simon Jean-Luc
Bacsalmassy J. A.
Ebauches Electroniques S.A.
Husar Francis S.
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