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:
Dec. 18, 2012
Filed:
Apr. 10, 2007
Kikuo Kaise, Kanagawa, JP;
Kikuo Kaise, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
In order to miniaturize a projector as a whole to such a degree that the projector can be included in a small device such as a portable telephone terminal or the like, a red laser light beam (R) is diffused and shaped by a diffractive optical element (R) for red, a green laser light beam (G) is diffused and shaped by a diffractive optical element (G) for green, and a blue laser light beam (B) is diffused and shaped by a diffractive optical element (B) for blue, so as to be each spread over an entire display area of a liquid crystal display panel () and be incident on corresponding pixels of a liquid crystal layer (). The diffused and shaped laser light beams (R,G, andB) are made incident on the liquid crystal display panel () via a field lens (). In the liquid crystal display panel (), red, green, and blue pixels are formed, and a microlens array is formed in an incidence side substrate (). The liquid crystal display panel () distributes and condenses the laser light of the colors by microlenses, and makes the laser light incident on the corresponding pixels. Refraction type optical elements can be used in place of the diffractive optical elements.