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. 27, 2012
Filed:
Jan. 08, 2010
Mark A. Handschy, Boulder, CO (US);
Mark A. Handschy, Boulder, CO (US);
Micron Technology, Inc., Boise, ID (US);
Abstract
Disclosed are display systems using reflective liquid-crystal microdisplays that efficiently use unpolarized light sources without needing to double the étendue of the source as occurs with conventional polarization conversion systems. Furthermore, the display systems can utilize on-axis projection lenses, and fast-switching ferroelectric-liquid-crystal-on-silicon (FLCOS) microdisplays. The systems utilize beam splitters that split unpolarized incident light into two diverged beams of opposite polarization. Ferroelectric liquid crystal display elements are combined with fixed retarders to enable an element that can selectively flip or not flip the handedness of incident circularly polarized light.