The embodiments of the present disclosure provide a reset method, a reset device, a reset system and a pixel array using the same. The reset method includes an electric charge accumulation unit being configured to store a first electric charge and an electric charge storage unit being configured to store a second electric charge. A polarity of the first electric charge is opposite to a polarity of the second electric charge. The reset method includes controlling the electric charge storage unit to obtain the second electric charge; and resetting the electric charge accumulation unit so as to transfer a preset amount of the second electric charge from the electric charge storage unit to the electric charge accumulation unit, which includes a third port of the control module applying a control voltage to a second end of the electric charge storage unit; and meanwhile charging the electric charge storage unit during the process of transferring the second electric charge.

An imaging device is provided with an amplification transistor having a gate connected to a charge accumulator, a feedback transistor of which the source or drain is electrically connected to the charge accumulator and the other is connected to the source or drain of the amplification transistor, a current supply that supplies a current to a first node, a first select transistor of which the source or drain is connected to the other of the amplification transistor, a second select transistor of which the source or drain is connected to the source or drain of the amplification transistor, a current source/voltage source switching circuit that selectively connects a current source or a first voltage supply circuit to the other of the first select transistor, and a second voltage supply circuit connected to the other of the second select transistor.

Switching techniques for fast voltage settling in image sensors are described. In one embodiment, an image sensor includes a plurality of lateral overflow integrating capacitor (LOFIC) pixels arranged in rows and columns of a pixel array. The plurality of pixels includes an active pixel configured for exposure to light, and a dummy pixel at least partially protected from exposure to light. A common bitline (BL) is couplable to the active pixel and the dummy pixel. A comparator (OA1) is coupled to the bitline. The comparator is configured to receive a pixel voltage (Vx) from the active pixel on one input and a ramp voltage (Vy) on another input. Charge accumulated by the active pixel is determined at least in part by an intersection between the ramp voltage and the pixel voltage.

An imaging device includes: a plurality of pixels arrayed in a matrix, the plurality of pixels respectively including photoelectric converters that convert light into signal charge and charge accumulators that accumulate the signal charge; and a control circuit. The control circuit causes pixels included in the plurality of pixels and belonging to at least one row to sequentially perform, for each row or for two or more rows at a time, a reset operation for initializing potentials of the charge accumulators, before receiving a trigger signal for giving an instruction for starting exposure, and causes, after receiving the trigger signal, the plurality of pixels to simultaneously perform an exposure operation for accumulating the signal charge in the charge accumulators without causing the pixels included in the plurality of pixels and belonging to at least one row to perform the reset operation.

The present invention provides a dual conversion gain image sensor comprising: a pixel circuit, through which pixel power supply voltage noise is transferred to a bit line; a power supply noise cancellation circuit with an input to which the pixel power supply voltage is applied, the power supply noise cancellation circuit mimicly producing a first transfer function with the aid of a low conversion gain path, the power supply noise cancellation circuit mimicly producing a second transfer function with the aid of a high conversion gain path; and a comparator. According to the present invention, the low and high conversion gain paths are two independent power supply noise cancellation paths that result in different transfer functions capable of tracking the variation of the pixel power supply voltage in low and high conversion gain modes.

An imaging device includes: pixels each including a photoelectric converter, and an output unit that outputs a pixel signal based on charge in a holding portion; an output line to which signals from the pixels are output; a clip circuit that limits a signal level of the output line to a range whose upper or lower limit is a predetermined clip level; and an amplifier unit that amplifies a signal of the output line. The amplifier unit outputs first and second signals amplified at first and second amplification factors, respectively, for the same pixel signal. The clip circuit limits a signal level of the output line to a first clip level in a first period in which the pixel signal is amplified at a first amplification factor and to a second clip level in a second period in which the pixel signal is amplified at a second amplification factor.

An image sensor includes: a normal pixel which outputs pixel data; a plurality of dummy pixels each of which outputs a reset signal; and an analog-to-digital conversion circuit suitable for analog-to-digital converting the pixel data based on the pixel data and an average value of the reset signals.

An image sensor includes image sensor cells, each configured to generate an image signal in response to control signals. The image sensor also includes an ADC to receive the image signals of the image sensor cells, and a first driver to generate one or more first control signals for a first image sensor cell, where the first driver includes a first negative supply terminal. The image sensor also includes a first multiplexor to selectively connect the first negative supply terminal of the first driver to one of a plurality of power supply nodes, and a second driver to generate one or more second control signals for a second image sensor cell, where the second driver includes a second negative supply terminal. The image sensor also includes a second multiplexor to selectively connect the second negative supply terminal of the second driver to one of the power supply nodes.

A solid-state imaging element according to an embodiment of the present disclosure includes: a first electrode including a plurality of electrodes; a second electrode opposed to the first electrode; and a photoelectric conversion layer provided between the first electrode and the second electrode, and the first electrode has, at least in a portion, an overlap section where the plurality of electrodes overlap each other with a first insulation layer interposed therebetween.

A radiation imaging apparatus includes an imaging unit having a pixel array of pixels, and a signal processing unit for processing a signal from the imaging unit. Each pixel includes a conversion element for converting radiation into electrical signal and a reset unit for resetting the conversion element, the signal processing unit generates radiation image based on first image corresponding to electrical signal converted by the conversion unit of each pixel in a first period, and second image corresponding to electrical signal converted by the conversion element of each pixel in a second period which starts after start of the first period and ends before end of the first period, and in each pixel, the conversion element is not reset by the reset unit in the first period.