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:
Mar. 18, 2003
Filed:
Sep. 27, 2001
Mark Thomas Johnson, Eindhoven, NL;
Paul Van Der Sluis, Eindhoven, NL;
Anna-Maria Janner, Eindhoven, NL;
Hugo Johan Cornelissen, Eindhoven, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
The invention relates to a switching device having shorter switching times. The device comprises a switchable layer ( ), which is switched between a reflecting and an absorbing state by changing a hydrogen content of the switchable layer ( ). Applying a DC voltage on electroconductive layers ( ) changes the hydrogen content. These electroconductive layers ( ) sandwich a stack of layers comprising the switchable layer ( ) and a hydrogen storage layer ( ). The hydrogen storage layer comprises essentially the same compounds as the switchable layer ( ), viz. LMgH and preferably GdMgH . The storage layer may be made thin, leading to relatively short hydrogen transportation times and a relatively fast display. The device may be further improved by applying a scattering foil.