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, 2003
Filed:
Feb. 22, 1999
Applicant:
Inventor:
Naci Basturk, Enges, CH;
Assignee:
Asulab S.A., , CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G04C 1/700 ;
U.S. Cl.
CPC ...
G04C 1/700 ;
Abstract
A display assembly includes two superposed, respectively upper ( ) and lower ( ) display devices, characterized in that the upper display device ( ) includes a display cell ( ) arranged above an optical valve ( ), said double structure being arranged so as to be transparent in a first state to make the lower display device visible ( ), and so as to display item of data in a second state, control circuits supplying a control voltage to the cell ( ) to cause it to switch from the first state to the second state and vice versa, characterized in that the cell ( ) is a display cell of the type including a diffusing or reflective liquid crystal in the second state.