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:
Dec. 31, 2002
Filed:
Mar. 17, 1998
Hiroki Miura, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
The present invention relates to a solid image pick-up unit which can restrict a variation in the leakage charge quantity at the light emitting time and non-emitting time of the LED and in which a signal charge quantity can be increased and adjusted without increasing the number of LED. A photodiode is connected to two sample-hold transistors for transferring charges to two sample-hold capacitors respectively through a transfer transistor, and is also connected to a reset transistor and an amplification transistor through the transfer transistor. Further, the amplification transistor is connected with an address transistor. The two sample-hold capacitors are disposed at positions symmetrical with the center of the n-diffusion layer of the photodiode.