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. 13, 2011
Filed:
Mar. 15, 2006
Yutaka Muramoto, Miyagi, JP;
Satoshi Sekino, Miyagi, JP;
Hideki Terashima, Miyagi, JP;
Tatsuya Harima, Miyagi, JP;
Sachie Shoji, Miyagi, JP;
Noriaki Doi, Miyagi, JP;
Tokuhiro Morioka, Miyagi, JP;
Yutaka Muramoto, Miyagi, JP;
Satoshi Sekino, Miyagi, JP;
Hideki Terashima, Miyagi, JP;
Tatsuya Harima, Miyagi, JP;
Sachie Shoji, Miyagi, JP;
Noriaki Doi, Miyagi, JP;
Tokuhiro Morioka, Miyagi, JP;
Sony Corporation, Tokyo, JP;
Abstract
A retardation compensatorfor compensating for residual retardation of a liquid crystal panelincludes a retardation compensating platehaving birefringence. An in-plane retardation Rof the retardation compensating plateand an in-plane retardation Rof the liquid crystal panelsatisfy a relationship of 1<R/R≦10, thereby allowing changes in the amount of compensated retardation among rotation angles occurring when the retardation compensating plateis set with respect to the liquid crystal panelto be confined within narrow limits. Therefore, the contrast can be adjusted readily, and variations in residual retardation among the individual liquid crystal panelscan be accommodated flexibly.