Patent ID: 7538371

Claim:
A CMOS image sensor integrated with 1T-SRAM comprising: a substrate having a pixel array part, a logic circuit part, and a memory part; a pixel array positioned in the pixel array part; a logic circuit positioned in the logic circuit part; a plurality of one-transistor static random access memory (1T-SRAM) cells comprising a capacitor structure and a transistor positioned in the memory part; and a first shallow trench isolation (STI) positioned on a side of the capacitor structure in the substrate for providing an electrical isolation; wherein the capacitor structure, comprising a well region serving as a bottom capacitor plate, a top capacitor plate, and a dielectric layer positioned above the well region and extending to a surface of the substrate; the capacitor structure penetrates a portion of the first STI, the well region is positioned within a plurality of sidewalls and the bottom of a deep trench and contacting a bottom of the first STI; and the dielectric layer covers the sidewalls and the bottom of the deep trench.