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:
Jul. 29, 2003
Filed:
Jun. 16, 2000
Asulab S.A., Bienne, CH;
Abstract
The invention concerns a display assembly including two superposed, respectively upper ( ) and lower ( ) display devices, characterised in that the upper display device ( ) includes a double structure formed of a display cell ( ) arranged above an optical valve ( ), said double structure being arranged so that said cell ( ) and said valve ( ) are transparent in a first state to make the lower display device visible ( ), and that the cell ( ) displays an item of data and that the valve ( ) is opaque and masks at least partially the lower display device ( ) in a second state, control means being provided for supplying a control voltage to the cell ( ) and the optical valve ( ) to cause them to switch from the first state to the second state and vice versa.