Unit pixel including three transistors and pixel array including the unit pixels
OwnerDo Young Leeinventor
Life of this patent
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Abstract
Provided is a unit pixel which uses three transistors and a pixel array including the unit pixel. The unit pixel includes a photodiode, a charge passing unit, a reset controller, and a voltage converter. The pixel array has a structure in which a plurality of the unit pixels according to the present invention are two-dimensionally arrayed, and includes one or more reset power supply circuits which output two or more different supply voltages in response to a pixel selection control signal. Parts of a plurality of the unit pixels share a voltage output from the reset power supply circuit.
Claims13
A unit pixel which includes a photodiode, a charge passing unit, a reset controller, and a voltage converter and outputs a conversion voltage corresponding to a received image signal,
- wherein the photodiode generates a charge in response to the image signal,
- wherein the charge passing unit passes the charge generated by the photodiode to the voltage converter in response to a charge pass control signal,
- wherein the reset controller supplies two or more different supply voltages to a common terminal between the charge passing unit and the voltage converter in response to a reset control signal, and
- wherein the voltage converter outputs the conversion voltage corresponding to charges accumulated in a common terminal between the charge passing unit and the reset controller.
Dependencies are inferred from the claim text.