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:
Jan. 23, 2007
Filed:
Sep. 04, 2001
Akihiko Ito, Nagano-ken, JP;
Akira Inoue, Shiojiri, JP;
Yutaka Ozawa, Nagano-ken, JP;
Ryo Ishii, Matsumoto, JP;
Akihiko Ito, Nagano-ken, JP;
Akira Inoue, Shiojiri, JP;
Yutaka Ozawa, Nagano-ken, JP;
Ryo Ishii, Matsumoto, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
The invention reduces power consumption when, for example, a mobile personal computer is in a power-saving mode or when a cellular phone is in a wait mode, in an electro-optical apparatus, such as a liquid crystal display of the subfield drive type used as a display apparatus for various apparatuses. Three different settings '64', '16' and “2” are enabled as the number of gray scale levels in an electro-optical apparatus, the number of subfields becoming smaller as the number of gray scale levels is reduced. When a large number of gray scale levels is not required (when in the power-saving mode, the wait mode, etc.), a low number of gray scale levels is set, so that the own capacitance of a liquid crystal layer and storage capacitance are charged and discharged less often.