阅读说明：本技术 复位方法、复位装置、以及应用其的复位系统和像素阵列 (Reset method, reset device, reset system and pixel array using reset device ) 是由 雷述宇 于 2019-06-03 设计创作，主要内容包括：本发明的实施方式提供一种复位方法、复位装置以及应用其的复位系统和像素阵列,该复位方法包括：电荷累积单元用于存储第一电荷,电荷存储单元用于存储第二电荷,其中第一电荷与第二电荷的极性相反,控制所述电荷存储单元获得所述第二电荷；对电荷累积单元进行复位,以将预设数量的第二电荷从电荷存储单元转移至电荷累积单元,并在第二电荷转移过程中向所述电荷存储单元中充电。该复位方法通过从电荷存储单元转移预设数量的与第一电荷极性相反的第二电荷至电荷累积单元,使得第一电荷和第二电荷结合后电荷累积单元的电压变化,从而实现了对复位电荷量的精确控制,提高积分电荷量的准确性,降低复位噪声,提高输出信号质量。(An embodiment of the invention provides a reset method, a reset device, a reset system and a pixel array using the same, wherein the reset method comprises the following steps: the charge accumulation unit is used for storing first charges, the charge storage unit is used for storing second charges, the polarity of the first charges is opposite to that of the second charges, and the charge storage unit is controlled to obtain the second charges; the charge accumulating unit is reset to transfer a preset amount of second charges from the charge storing unit to the charge accumulating unit and to charge the charge storing unit in a second charge transfer process. According to the reset method, the preset number of second charges with the polarity opposite to that of the first charges are transferred from the charge storage unit to the charge accumulation unit, so that the voltage of the charge accumulation unit is changed after the first charges and the second charges are combined, accurate control of the reset charge amount is achieved, accuracy of the integrated charge amount is improved, reset noise is reduced, and output signal quality is improved.)

A reset method, wherein a charge accumulating unit is configured to store a first charge, and a charge storing unit is configured to store a second charge, the first charge and the second charge having opposite polarities, the reset method comprising:

controlling the charge storage unit to obtain the second charge;

resetting the charge accumulating unit to transfer a preset amount of the second charge from the charge storing unit to the charge accumulating unit and charging the charge storing unit in the second charge transfer process.

The reset method of claim 1, wherein the controlling the charge storage unit to obtain the second charge specifically comprises:

controlling the charge storage unit to charge through a first signal;

the resetting the charge accumulation unit specifically includes:

and controlling the charge storage unit to discharge through a second signal.

The reset method of claim 2, wherein the controlling the charge storage unit to charge by the first signal comprises:

controlling a first switch by the first signal to store the second charge in the charge storage unit;

the first signal is output to the first switch by a first port of a control module, and the first switch is connected between a first end of the charge storage unit and the first port of the control module.

The reset method of claim 3, wherein after controlling the charge storage unit to charge by the first signal and before controlling the charge storage unit to discharge by the second signal, further comprising:

and releasing the second charges stored in the charge storage unit through the first switch, so that the charge storage unit obtains the second charges with the preset charge quantity.

The reset method of claim 4, wherein the second charge stored in the charge storage unit is released via the first switch until the first switch is in a subthreshold region, so that the charge storage unit obtains the second charge of a preset charge amount.

The reset method according to any one of claims 2 to 5, wherein the controlling the charge storage unit to discharge by the second signal specifically comprises:

controlling a second switch to close by the second signal to transfer the second charge from the charge storage unit to the charge accumulation unit;

wherein the second signal is output from the second port of the control module to the control terminal of the second switch, and the second switch is connected between the first terminal of the charge storage unit and the charge accumulation unit.

The reset method of claim 6, wherein the controlling the charge storage unit to discharge by the second signal further comprises:

and if the first preset time length passes from the first starting moment and/or the second switch is in a subthreshold region, the second switch is opened so as to stop the second charge from being transferred from the charge storage unit to the charge accumulation unit.

The reset method of any one of claims 2 to 7, wherein in transferring the second charge from the charge storage unit to the charge accumulating unit, further comprising:

applying a control voltage to a second terminal of the charge storage unit through a third port of a control module.

The reset method of claim 8, wherein applying the control voltage to the second terminal of the charge storage unit through the third port of the control module comprises:

gradually changing a control voltage applied to the second terminal of the charge storage unit through the third port in a preset direction.

The reset method according to claim 8 or 9, wherein the applying a control voltage to the second terminal of the charge storage unit through the third port of the control module specifically comprises:

taking the time when the second charge starts to be transferred from the charge storage unit to the charge accumulation unit as a second starting time, and if a second preset time length passes from the second starting time, charging the second end of the charge storage unit through the third port so as to enable the control voltage to be changed to a preset threshold value;

and after the control voltage is changed to the preset threshold value, continuously keeping the control voltage at the preset threshold value until the second switch is disconnected, and stopping charging the second end of the charge storage unit.

The reset method according to any one of claims 1 to 10, wherein before resetting the charge accumulation unit, further comprising:

judging whether the voltage converted by the first charge stored in the charge accumulation unit exceeds a preset threshold voltage or not;

the resetting the charge accumulation unit includes:

and if the voltage converted by the first charge stored in the charge accumulation unit is judged to exceed the preset threshold voltage, resetting the charge accumulation unit.

The reset method according to claim 11, wherein the resetting the charge accumulation unit specifically comprises:

and if the conversion voltage converted by the first charge exceeds the preset threshold voltage, resetting the charge accumulation unit through a control module, or resetting the charge accumulation unit through the control module based on a preset time sequence.

A reset device, comprising:

a charge accumulation unit for storing a first charge;

a charge storage unit for storing a second charge, wherein the first charge is opposite in polarity to the second charge;

the control module is used for controlling the charge storage unit to obtain the second charge; resetting the charge accumulating unit to transfer a preset amount of the second charge from the charge storing unit to the charge accumulating unit and charging the charge storing unit in the second charge transfer process.

The reset device according to claim 13, wherein the control module, when controlling the charge storage unit to obtain the second charge, is specifically configured to: controlling the charge storage unit to charge through a first signal;

the control module is specifically configured to, when resetting the charge accumulation unit: and controlling the charge storage unit to discharge through a second signal.

The reset apparatus of claim 14, further comprising a first switch connected between the first terminal of the charge storage unit and the first port of the control module;

the control module is specifically configured to, when controlling the charge storage unit to charge through the first signal:

and controlling a first switch through the first signal to store the second charge in the charge storage unit, wherein the first signal is output to the first switch from a first port of a control module.

The reset apparatus of claim 15, wherein the control module is further configured to:

after the charge storage unit is controlled to be charged by a first signal and before the charge storage unit is controlled to be discharged by a second signal, the second charge stored in the charge storage unit is released through the first switch, so that the charge storage unit obtains the second charge of a preset charge quantity.

The reset apparatus of claim 16, wherein the control module is further configured to:

and releasing the second charges stored in the charge storage unit through the first switch until the first switch is in a subthreshold region, so that the charge storage unit obtains the second charges with a preset charge quantity.

The reset apparatus according to any one of claims 14 to 16, further comprising a second switch connected between the first terminal of the charge storage unit and the charge accumulation unit;

the control module is specifically configured to, when controlling the charge storage unit to discharge by the second signal:

controlling the second switch to close by the second signal to transfer a preset amount of the second charge from the charge storage unit to the charge accumulation unit, wherein the second signal is output from the second port of the control module to the control terminal of the second switch.

The reset apparatus of claim 20, wherein the control module, in controlling the charge storage unit to discharge via the second signal, is further configured to:

and if the first preset time length passes from the first starting moment and/or the second switch is in a subthreshold region, turning off the second switch to stop the second charge from being transferred from the charge storage unit to the charge accumulation unit.

The reset apparatus according to any one of claims 14 to 19, wherein the control module, during the process of transferring the preset amount of the second electric charges from the charge storage unit to the charge accumulation unit, is further configured to:

a control voltage is applied to the second terminal of the charge storage unit through the third port.

The reset apparatus according to claim 20, wherein the control module, when applying the control voltage to the second terminal of the charge storage unit through the third port, is specifically configured to:

gradually changing a control voltage applied to the second terminal of the charge storage unit through the third port in a preset direction.

The reset device according to claim 20 or 21, wherein the control module, when applying the control voltage to the second terminal of the charge storage unit via the third port of the control module, is specifically configured to:

taking the time when the second charge starts to be transferred from the charge storage unit to the charge accumulation unit as a second starting time, and if a second preset time length passes from the second starting time, charging the second end of the charge storage unit through the third port so as to enable the control voltage to be changed to a preset threshold value;

after the control voltage rises to the preset threshold, the control voltage is continuously kept at the preset threshold until the second switch is turned off, and the second end of the charge storage unit is stopped being charged.

The reset apparatus according to any one of claims 1 to 22, wherein the control module, before resetting the charge accumulation unit, is further configured to:

judging whether the voltage converted by the first charge stored in the charge accumulation unit exceeds a preset threshold voltage or not;

the control module is specifically configured to, when resetting the charge accumulation unit: and if the voltage converted by the first charge stored in the charge accumulation unit is judged to exceed the preset threshold voltage, resetting the charge accumulation unit.

The reset apparatus according to claim 23, wherein the control module, when resetting the charge accumulation unit, is specifically configured to:

and if the conversion voltage converted by the first charge is judged to exceed the preset threshold voltage, resetting the charge accumulation unit, or resetting the charge accumulation unit based on a preset time sequence.

A charge reset apparatus comprising a plurality of charge reset modules, a plurality of latches, and a plurality of comparators shared by the charge reset modules at times, the charge reset modules being as claimed in any one of claims 13 to 24, wherein

The comparator is used for comparing the voltage converted by the charge accumulation units of the pixel charge reset modules with a reference voltage, and outputting the comparison result to latches corresponding to the charge reset modules respectively;

the latch is used for storing the comparison result of the corresponding charge accumulation unit; controlling the corresponding charge reset module according to the comparison results of the plurality of charge accumulation units;

the charge resetting module is used for resetting the charges in the corresponding charge accumulation units based on the comparison result of the charge accumulation units stored in the latches.

A reset system for performing the reset method of any one of claims 1 to 12, comprising the reset device of any one of claims 13 to 24, or the charge reset device of claim 25.

A pixel array for performing a reset method according to any one of claims 1 to 12, comprising a reset device according to any one of claims 13 to 24, or a charge reset device according to claim 25.