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:
Nov. 25, 1986
Filed:
Feb. 01, 1984
Jean F Clerc, Meylan, FR;
Commissariat a l'Energie Atomique, Paris, FR;
Abstract
The invention relates to a sequential control process for a matrix display using the cholesteric - nematic phase transition effect of a liquid crystal. This process consists of sequentially applying to the columns of electrodes of the display, a blanking signal followed by an addressing signal, the rows of electrodes of said display being addressed in parallel, in order to obtain the displayed or undisplayed state of the liquid crystal, followed by the sequential application of an addressing signal to the rows of electrodes, the columns of electrodes being addressed in parallel, in order to maintain the displayed or undisplayed state of the liquid crystal, while significantly improving the contrast.