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:
Oct. 09, 2007
Filed:
May. 12, 2003
Kazuhiro Uehara, Tenri, JP;
Kazuhiro Uehara, Tenri, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A sensor substrate () which includes phototransistors (), each having a photosensitive semiconductor layer, and auxiliary capacitances () connected to the drain electrodes D of the corresponding phototransistors (), and detecting ICs () for detecting a photoelectric conversion amount of the sensor substrate (), which is connected to a source electrode S of the phototransistor (), are provided. In the auxiliary capacitance (), a predetermined amount of charge is stored, and also stored are the charge as generated by an emission of a light beam onto a photosensitive semiconductor layer in the non-conductive state of the phototransistor (). Each detecting IC () detects a photoelectric conversion amount of the sensor substrate () based on the amount of charge remaining in the auxiliary capacitance ().