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. 11, 2005
Filed:
Mar. 17, 1999
Robert B. Akins, Palatine, IL (US);
Ken Paitl, East Dundee, IL (US);
George M. Ventouris, Lake Zurich, IL (US);
Michael L. Charlier, Palatine, IL (US);
Robert B. Akins, Palatine, IL (US);
Ken Paitl, East Dundee, IL (US);
George M. Ventouris, Lake Zurich, IL (US);
Michael L. Charlier, Palatine, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A display () with aligned optical shutter and backlight cells () uses a patterned polymer-dispersed liquid crystal (PDLC) optical shutter material () and an electroluminescent (EL) backlight material () to provide a low-cost, low-current-drain display having good contrast in both bright-light and low-light conditions. The aligned, patterned optical shutter and backlight layers form pixel 'windows' through which images printed on a background can be hidden or revealed. Specifically, a mask layer () bears the images and is inserted between the optical shutter and the backlight layers to show information images, cover inactive areas of the display, and cover electrode traces connecting active segments of the display. The display () is thin and flexible enough to be integrated with a touchscreen ().