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:
Sep. 28, 1999
Filed:
Oct. 20, 1997
Young-rag Do, Suwon-si, KR;
Chang-won Park, Suwon-si, KR;
Jang-ho Kim, Suwon-si, KR;
Jae-woo Bae, Suwon-si, KR;
Joon-bae Lee, Seoul, KR;
Abstract
Disclosed is a ferroelectric liquid crystal display projector employing a fluorescent screen, including a light source emitting light of a predetermined wavelength; a first condensing lens for converting the light radiated from the light source into beams; a polarizing beam splitter for selecting a predetermined directional light in the incident light passing through the first condensing lens and for polarizing the light; a ferroelectric liquid crystal shutter on/off operated according to the polarizing operation of the polarizing beam splitter, the ferroelectric liquid crystal shutter comprising a reflecting layer attached on a backside and RAM devices attached on each pixel of a ferroelectric liquid crystal (FLC); an optical system for magnifying, at a predetermined ratio, the light reflected from the ferroelectric liquid crystal shutter; and a fluorescent screen of a fluorescent material which radiates by light, passing through the optical system, at a predetermined wavelength.