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:
Jan. 07, 1992
Filed:
Apr. 18, 1991
Raymond Vuilleumier, Fontainemelon, CH;
Centre Suisse d'Electronique et de Microtechnique SA, Neuchatel, CH;
Abstract
A light modulation device with matrix addressing including a matrix of cells. Each cell has two flaps fixed to a substrate by flexible attachments, a control electrode, a row electrode and a maintenance electrode. The flaps can adopt two stable positions through the application of suitable voltages to the row and maintenance electrodes. The flaps are activated by the application of a control voltage to the electrode at the same time as the voltage on the row electrode is returned to zero. The arrangement of the electrodes together with the existence of a maintenance electrode, which is common to all the flaps on the matrix, allows matrix addressing to be achieved.