Patent ID: 11863899
Assignee: SHANGHAI INTEGRATED CIRCUIT EQUIPMENT & MATERIALS INDUSTRY INNOVATION CENTER CO., LTD
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A signal transmission method for the image sensor unit according to claim 13, comprising following steps:
S1: turning on the transmission transistor and the reset transistor to make the photodiode in a reset state; setting a voltage of a lower electrode of the RRAM to a first voltage;
S2: turning off the transmission transistor, and the photodiode starting to be exposed;
S3: increasing the voltage of the lower electrode of the RRAM to a second voltage, wherein a difference between the second voltage and a voltage of the upper electrode of the RRAM is less than a voltage threshold at which a resistance state of the RRAM is changed;
S4: turning off the reset transistor, and maintaining a voltage of the floating diffusion region at a first sampled voltage;
S5: writing the first sampled voltage to the upper electrode of the RRAM and maintaining;
S6: reading a first resistance value of the RRAM, wherein the first resistance value corresponds to the first sampled voltage;
S7: turning on the transmission transistor to reduce the voltage of the floating diffusion area to a second sampled voltage;
S8: turning off the transmission transistor;
S9: writing the second sampled voltage to the RRAM and maintaining; and
S10: reading a second resistance value of the RRAM, wherein the second resistance value corresponds to the second sampled voltage.