Patent ID: 11955503
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. A global shutter imaging element comprising:
a substrate or a well;
a pinned photodiode disposed on the substrate or the well;
a global memory disposed on the substrate or the well;
a global memory controlling gate electrode disposed adjacent to the global memory;
a third transfer gate transistor disposed between the pinned photodiode and the global memory, the third transfer gate transistor transferring a photodiode signal charge generated by the pinned photodiode to the global memory;
a gate-controlled storage disposed on the substrate or the well;
an overflow path disposed between the global memory and the gate-controlled storage, the overflow path transferring a signal charge overflowing from the global memory to the gate-controlled storage as a storage signal charge;
a floating diffusion region disposed on the substrate or the well;
a first transfer gate transistor disposed between the global memory and the floating diffusion region, the first transfer gate transistor transferring a signal charge stored in the global memory to the floating diffusion region as a global memory signal charge; and
a detecting node connected to the floating diffusion region, wherein the global memory signal charge and the storage signal charge are read at the detecting node,
wherein the gate-controlled storage and the global memory are controlled to vary storable charge capacities by voltages applied to a storage-controlling gate electrode and the global memory controlling gate electrode, respectively.