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. 27, 2012
Filed:
Jan. 30, 2007
Takashi Watanabe, Kyoto, JP;
Takahiko Yoshimoto, Nara, JP;
Takashi Watanabe, Kyoto, JP;
Takahiko Yoshimoto, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
Before a signal charge from a photodiodeis transferred to a signal charge accumulating portionby a scanning circuit, a reset transistoris turned on for a prescribed period to reset the voltage of the signal charge accumulating portionin a state in which the voltage of a read signal lineis retained at a first voltage (Vg) by lowering the drain side voltage of an amplifying transistor. Subsequently, by raising the drain side voltage of the amplifying transistorby a scanning circuitto make the read signal linehave a second voltage (Vrst) higher than the first voltage (Vg), the voltage of the signal charge accumulating portionis made higher than a voltage immediately after resetting. Then, the transfer transistoris turned on to transfer the signal charge from the photodiodeto the signal charge accumulating portion