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:
Aug. 17, 2004
Filed:
Oct. 15, 2001
Laurence M. Hubby, Jr., Palo Alto, CA (US);
Sean Zhang, Sunnyvale, CA (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A particle display device having a monolayer of a bistable polarizable molecule on either side of a gap filled with a liquid containing suspended particles. The monolayers and the liquid filled gap are disposed between patterned electrodes that are used to apply an electric field across the layers of the gap, thus influencing the orientation or the distribution of the suspended particles. The optical transmission or reflectance of the gap is dependent upon the applied electric field. The polarizable monolayers respond to the applied electric field by assuming one of two stable polarized states. The field provided by the dipoles of the molecules in the monolayer remains after the external field is removed, thereby sustaining the electric field influence on the suspended particles of the display device.