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:
Jun. 22, 2004
Filed:
Aug. 26, 2002
Applicant:
Inventors:
Peter Albert Cirkel, Eindhoven, NL;
Petrus Cornelis Paulus Bouten, Eindhoven, NL;
Peter Jan Slikkerveer, Eindhoven, NL;
Giovanni Nisato, Eindhoven, NL;
Assignee:
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F 1/1334 ;
U.S. Cl.
CPC ...
G02F 1/1334 ;
Abstract
A bistable liquid crystal display device can be erased by the application of a mechanical pressure P at a section of the display. The pressure induces a flow of the liquid crystal ( ) material into an expansion chamber ( ). The induced flow causes a transition from the non-reflecting to the reflecting state, thus eliminating the necessity of high voltage erasing voltages.