Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Takeshi Aoki0
Munehiro Kozuma0
Takayuki Ikeda0
Yoshiyuki Kurokawa0
Date of Patent
March 10, 2015
0Patent Application Number
130374910
Date Filed
March 1, 2011
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A semiconductor device includes a photodiode, a first transistor, a second transistor, and a third transistor. The second transistor and the third transistor have a function of retaining a charge accumulated in a gate of the first transistor. In a period during which the second transistor and the third transistor are off, a voltage level of a voltage applied to a gate of the second transistor is set to be lower than a voltage level of a source of the second transistor and a voltage level of a drain of the second transistor, and a voltage level of a voltage applied to a gate of the third transistor is set to be lower than a voltage level of a source of the third transistor and a voltage level of a drain of the third transistor.
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