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:
Jan. 01, 2019
Filed:
Nov. 30, 2016
Renesas Electronics Corporation, Tokyo, JP;
Fumihide Murao, Tokyo, JP;
Renesas Electronics Corporation, Tokyo, JP;
Abstract
A conventional image sensing device has a problem of a large variation of a reset voltage of a floating diffusion. According to an embodiment, an image sensing device includes a reset circuit switching a voltage to be supplied to a floating diffusion when the floating diffusion is reset. In a first reset operation (PD reset) performed prior to a light-exposure period for exposing a photoelectric conversion element with light, the reset circuit supplies a first reset voltage generated based on a power-source voltage to the floating diffusion. In a second reset operation (FD reset) performed during the light-exposure period for exposing the photoelectric conversion element with the light, the reset circuit supplies a second reset voltage generated based on a reset correction voltage lower than the power-source voltage to the floating diffusion, and then supplies the first reset voltage.