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. 05, 2022
Filed:
Apr. 04, 2018
Koninklijke Philips N.v., Eindhoven, NL;
Emile Johannes Karel Verstegen, Eindhoven, NL;
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
A multi-view display device () is switchable between a single view and a multiple view mode. The display device comprises a display panel () having rows and columns of pixels or sub-pixels () configured to produce a display output. A lenticular lens arrangement () is arranged over a display output side of the display panel and includes an array of lenticular lens elements () which comprise an electro-optic material () adjacent a non-switchable optically transparent layer (). The electro-optic material comprises a cholesteric liquid crystal component having an ordinary refractive index and an extra-ordinary refractive index. The cholesteric liquid crystal component comprises a helical structure defined by a pitch which is selected such that a product of the pitch and the difference between the ordinary and extra-ordinary refractive indices is equal to or less than a visible light wavelength of the display output. An effective refractive index of the cholesteric liquid crystal component is controllable by application of an electrical stimulus thereby permitting switching between the single view and multiple view modes.