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:
Dec. 27, 1983
Filed:
May. 06, 1981
Applicant:
Inventors:
Jean-Paul Droguet, Courbevoie, FR;
Michel Vernay, Paris, FR;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
350344 ; 350334 ; 445 24 ;
Abstract
A two dimensional display unit with an electrically controlled fluid and a method of manufacturing it. A layer of liquid crystal whose birefringence is electrically controlled is disposed between two thin glass plates which bear transparent electrodes and are connected together by metal studs regularly spaced apart over the whole useful surface so as to maintain a gap of constant thickness, the cell thus constituted being illuminated by parallel light and placed between crossed polarizer and analyzer. The invention applies to displaying various images at a low cost.