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:
Apr. 13, 1976
Filed:
Oct. 16, 1974
Norman C Zatsky, Southbury, CT (US);
Timex Corporation, Waterbury, CT (US);
Abstract
An electrooptic display for watches with improved night visibility comprises a liquid crystal cell with actuatable character segments and polarizing elements mounted on either side thereof, a reflector behind one of the polarizer elements and light emitting segments on the reflector aligned with the character segments. In a first embodiment, the reflector has thin lines of phosphorescent material painted on its surface adjacent the polarizing element. In a second embodiment, the reflector has small slits aligned with the character segments and a phosphorescent material is painted into the slit area behind the reflector. Both embodiments preferably employ a display having clear or light characters against a dark background. Thus during nighttime use, light radiating from the phosphorescent material may be seen by the viewer through each energized (or transparent) segment. Light from the phosphorescent material behind deenergized segments is blocked. The outer polarizing element may be rotatable from a crossed position through an angle of 90.degree. to provide a dark on light display for optimum daytime viewing.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile