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. 06, 1995
Filed:
Nov. 09, 1992
Yoichi Hosokawa, Hyougo, JP;
Tadashi Obayashi, Shiga, JP;
Shinichiro Kurata, Shiga, JP;
Satoru Murakami, Shiga, JP;
Hiromi Maeda, Kyoto, JP;
Takeharu Yamawaki, Shiga, JP;
Kanegafuchi Kagaku Kogyo Kabushiki Kaisha, Osaka, JP;
Abstract
The invention seeks to reduce residual image in the vertical direction, which is the most significant drawback in the charge storage system, and further to permit increased speed of operation to be obtained. To this end, an image sensor of matrix drive type according to the invention comprises m by n diode pairs each including a photo- and a blocking diode PD and BD with the cathode electrodes thereof connected in series, the diode pairs constituting n blocks B.sub.1,B.sub.2 . . . , Bn each of m diode pairs. A clamp diode CD is connected to the juncture between the photo- and blocking diodes PD and BD in each diode pair to clamp the potential on the juncture and thus permit complete and quick charging of the capacitance of the photo-diode PD.