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:
Jun. 08, 2010
Filed:
Jan. 27, 2005
Toshiharu Murai, Kanagawa, JP;
Kazuhiro Fujita, Tokyo, JP;
Kenji Kameyama, Kanagawa, JP;
Toshiaki Tokita, Kanagawa, JP;
Yasuyuki Takiguchi, Kanagawa, JP;
Toshiharu Murai, Kanagawa, JP;
Kazuhiro Fujita, Tokyo, JP;
Kenji Kameyama, Kanagawa, JP;
Toshiaki Tokita, Kanagawa, JP;
Yasuyuki Takiguchi, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A reliable image display apparatus is provided that is capable of preventing a direct current from being applied to liquid crystal of a spatial light modulating element so that damage such as burns in the liquid crystal and screen flicker may be prevented and a high resolution image with high image quality may be displayed. The image display apparatus is configured to divide a frame into 2i sub frames (i corresponding to a natural number) and sequentially display the sub frames using the liquid crystal spatial light modulating element. The image display apparatus includes a polarity switching unit configured to reverse the polarity of a drive voltage for a pixel of the spatial light modulating element for every j sub frame(s) (j corresponding to a natural number that is less than 2i) and for every n frame(s)(n corresponding to a natural number).