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. 03, 2009
Filed:
Mar. 05, 2004
Tomoyuki Shirasaki, Tokyo, JP;
Kazuhito Sato, Tokyo, JP;
Tsuyoshi Ozaki, Tokyo, JP;
Manabu Takei, Sagamihara, JP;
Tomoyuki Shirasaki, Tokyo, JP;
Kazuhito Sato, Tokyo, JP;
Tsuyoshi Ozaki, Tokyo, JP;
Manabu Takei, Sagamihara, JP;
Casio Computer Co., Ltd., Tokyo, JP;
Abstract
A driver circuit for driving optical elements which is applied to a pixel driver circuit of the display device in this invention comprises a first current path with one end connected to the optical elements and the other end connected to a drive power supply; a second current path electrically connected to the first current path; a write-in control circuit which flows the write-in current having a predetermined current value in the direction of the other end side from the one end side of the first current path via the second current path; a charge storage circuit which stores the electric charge accompanying the write-in current flowing in the first current path; a drive control circuit which supplies the drive current to the optical elements via the first current path has a current value corresponding to the current value of the write-in current and drives these optical elements based on the electric charge stored in the charge storage circuit; and has a first timing operation in which the electric charge of the write-in current flowing in the first current path is stored by the write-in control circuit according to the write-in current in the charge storage circuit; and a second timing operation which supplies the drive current to the optical elements which does not overlap the time period of the first timing operation.