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. 04, 2008
Filed:
Jan. 29, 2004
Kazuya Kitamura, Nara, JP;
Kazuya Kitamura, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A liquid crystal panel unit () includes, on its side from which light enters, a micro-lens substrate () having: a first micro-lens array including a first lens () for converging, for converging, on aperture sections (R•G•B) of respective picture elements in a liquid crystal display element, the plurality of the light beams whose respective incident angles are different from one another; and a second micro-lens array having a second lens () for collimating principal rays of the respective light beams. The second lens () is substantially trapezoid so that the lens includes slanted surfaces () directing its convex parts towards the light incident side. With this configuration, it is possible to realize a single-panel mode color-filterless projection-type liquid crystal display device with high light-using efficiency at a low cost, without deteriorating the light-using efficiency.