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:
Feb. 04, 1997
Filed:
Apr. 27, 1995
Denis Sarrasin, Sassenage, FR;
Abstract
A multiplexed matrix display screen and a process for controlling same are provided. The screen has n row electrodes (10) and m column electrodes (8), which cross one another, and n control circuits (26i) for successively controlling the n row electrodes, with n and m being integers greater than or equal to 2. At least one control circuit for a row electrode (Li), with i being an integer such that 1<i.ltoreq.n, is provided having means for applying to the row electrode (Li) a selection voltage during a first selection time and then a discharge potential during at least part of a second selection time of at least one other row electrode (Li+1), and for placing the row electrode Li under high impedance outside the first selection time and said part of the second selection time. Control circuits (24) for simultaneously applying to the m column electrodes during the first selection time potentials appropriate for displaying data on row Li are also provided.