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. 19, 1988
Filed:
Dec. 31, 1984
Holm Baeger, Schwalbach, DE;
Hans Wedel, Muhltal, DE;
VDO Adolf Schindling AG, Frankfurt am Main, DE;
Abstract
A display for displaying variable and permanent data. It has two support plates 1 and 2 which form between themselves a chamber 3 in which a fluid which can be switched between optically different states is arranged. Polarizers are arranged on the sides of the support plates 1 and 2 which face away from the chamber 3. In the region of permanent data, transparent elements 14 are present between the support plates 1 and 2. Furthermore, a source of light 15 is arranged on the side of the cell facing away from the observer. The variable data consists of bright data against a dark background. The observer's side of the cell is provided with a light-impervious layer 8 which has cutouts 9 and 10 in the region of the variable data as well as in correspondence with the permanent data. A transflective layer is disposed in the cutput region to enable viewing the cutout region and permanent data via incident light.