Title:
イメージセンサーおよびイメージセンサーのトランスファートランジスタ駆動方法
Document Type and Number:
Japanese Patent JP5329230
Kind Code:
B2
Abstract:
Provided is a 4-transistor CMOS image in which a driving condition or a pixel structure is changed so that a transfer transistor in a pixel operates in a pinch-off condition during reset and transfer operations in order to reduce dark current and fixed-pattern noise caused by a change in an operation condition of the transfer transistor and inter-pixel characteristic discrepancy. The image sensor includes a photosensitive pixel including a transfer transistor for transferring photon-induced charges created in a photodiode; and a voltage control unit for controlling a turn-on voltage applied to a gate of the transfer transistor to be lower than a floating diffusion node voltage plus the threshold voltage of the transfer transistor during a partial or entire section of a turn-on section of the transfer transistor such that the transfer transistor operates in a pseudo pinch-off mode.
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Inventors:
Min Bon Ki
Song Young Ju
Kim Mi Jin
Song Young Ju
Kim Mi Jin
Application Number:
JP2008544259A
Publication Date:
October 30, 2013
Filing Date:
December 07, 2006
Export Citation:
Assignee:
Electronics and Telecommunications Research Institute
International Classes:
H01L27/146; H04N5/361; H04N5/3745
Domestic Patent References:
| JP2004228871A |
Attorney, Agent or Firm:
Atsuhiro Hamanaka
Nakanishi Eiichi
Yoshikazu Tani
Kazuo Abe
Nakanishi Eiichi
Yoshikazu Tani
Kazuo Abe