The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 17, 1981
Filed:
Oct. 30, 1979
William G Freer, Saint-Blaise, CH;
Jean-Luc Simon, Marin, CH;
Ebauches Electroniques S.A., Neuchatel, CH;
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.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile