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:
Jul. 25, 2006
Filed:
Aug. 27, 2002
Donal O'keeffe, Clare, IE;
Albert O'halloran, Clare, IE;
Donal O'Keeffe, Clare, IE;
Albert O'Halloran, Clare, IE;
Vlyte Innovations Limited, Limerick, IR;
Abstract
A visual display device () comprises a visual display panel () which comprises an electro-optical medium () provided by a cholesteric liquid crystal medium which defines a plurality of pixels () which are alternately and selectively operable in a first light transmitting mode for forming a background () and a second light scattering mode for forming a character () against the background (). A video projector () projects a light beam () at a rear major face () of the visual display panel () which defines an image () of a character () being displayed on the visual display panel (). The light in the light beam () is incident on the pixels () which are operating in the second light scattering mode for forming the character () thereby increasing the brightness of the pixels () operating in the light scattering mode when viewed by a subject (), and thus enhancing the contrast between the pixels () operating in the second light scattering mode which form the character (), and the remaining pixels () which form a background () of the visual display panel ().