Pixel for picking up image signal and method of manufacturing the pixel

Provided is a pixel for picking up an image signal capable of suppressing an occurrence of a cross-talk. The pixel for picking up an image signal includes a substrate surrounded by a trench, a photodiode, and a pass transistor. The photodiode is formed at an upper portion of the substrate and includes a P-type diffusion area and an N-type diffusion area which are joined with each other in a longitudinal direction. The pass transistor is formed at the upper portion of the substrate and includes the one terminal that is the joined P-type diffusion area and the N-type diffusion area, the other terminal that is a floating diffusion area, and a gate terminal disposed between the two terminals. The pixel for picking up an image signal is surrounded by the trench which penetrates the substrate from the upper portion to the lower portion of the substrate, and the trench is filled with an insulator.