Semiconductor device, and control method and device for driving unit component of semiconductor device
First Claim
1. A semiconductor device comprising:
- a signal acquisition unit comprising a unit component comprising a charge generation unit for generating signal charge in response to incident electromagnetic waves, a charge accumulation unit for accumulating the signal charge generated by the charge generation unit, a signal generation unit for generating a signal in accordance with the signal charge accumulated in the charge accumulation unit, and a reset unit for resetting the charge accumulation unit; and
a driving control unit for using control pulses to cause the charge accumulation unit to go to a reset level so as to increase an amount of charge to be accumulated in the charge accumulation unit.
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Abstract
A solid-state imaging device, such as a CMOS sensor, includes a unit pixel having a charge generation unit for generating signal charge, a floating diffusion for accumulating the signal charge generated by the charge generation unit, a transfer gate transistor for transferring the signal charge in the charge generation unit to the floating diffusion, a reset transistor for resetting the floating diffusion, and an amplifying transistor for generating a signal in accordance with the signal charge generated by the charge generation unit and outputting the signal to a vertical signal line. The width of a reset pulse for driving the reset transistor is sufficiently decreased to, for example, less than or equal to ½, and preferably less than or equal to ⅕ of the response time of a signal that has occurred on the vertical signal line in response to the reset pulse.
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Citations
20 Claims
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1. A semiconductor device comprising:
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a signal acquisition unit comprising a unit component comprising a charge generation unit for generating signal charge in response to incident electromagnetic waves, a charge accumulation unit for accumulating the signal charge generated by the charge generation unit, a signal generation unit for generating a signal in accordance with the signal charge accumulated in the charge accumulation unit, and a reset unit for resetting the charge accumulation unit; and a driving control unit for using control pulses to cause the charge accumulation unit to go to a reset level so as to increase an amount of charge to be accumulated in the charge accumulation unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 19)
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- 16. A driving control device for driving a unit component of a semiconductor device, the unit component comprising a charge generation unit for generating signal charge in response to incident electromagnetic waves, a charge accumulation unit for accumulating the signal charge generated by the charge generation unit, a signal generation unit for generating a signal in accordance with the signal charge accumulated in the charge accumulation unit, and a reset unit for resetting the charge accumulation unit, the device comprising a driving control unit for using control pulses to cause the charge accumulation unit to go to a reset level so as to increase an amount of charge to be accumulated in the charge accumulation unit.
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20. A camera comprising:
a signal acquisition unit comprising a unit component comprising a charge generation unit for generating signal charge in response to incident electromagnetic waves, a charge accumulation unit for accumulating the signal charge generated by the charge generation unit, a signal generation unit for generating a signal in accordance with the signal charge accumulated in the charge accumulation unit, and a reset unit for resetting the charge accumulation unit; a driving control unit for using control pulses to cause the charge accumulation unit to go to a reset level so as to increase an amount of charge to be accumulated in the charge accumulation unit; and an optical system for guiding the electromagnetic waves to the signal acquisition unit.
Specification