Patent ID: 8039875

Claim:
A design structure embodied in a machine readable medium used in a design process, the design structure comprising: a pixel sensor cell comprising: a first isolation region adjacent to a second isolation region, said first isolation region and said second isolation region formed in a substrate; a photosensitive device for receiving impinging electromagnetic radiation, said photosensitive device formed between said first isolation region and said second isolation region, said photosensitive device comprising: an n-type collection well region for collecting electrons generated by said impinging electromagnetic radiation, said n-type collection well region: (i) abuts said first isolation region, (ii) abuts said second isolation region, and (iii) extends continuously between said first isolation region and said second isolation region; and a p-type collection well region for collecting holes generated by said impinging electromagnetic radiation, said p-type collection well region: (i) abuts said first isolation region, and (ii) abuts an upper surface of said n-type collection well region; an n-type diffusion region between said p-type collection well region and said second isolation region, said n-type diffusion region: (i) having a first side which abuts said second isolation region, (ii) having a second side opposite said first side, said second side abuts said p-type collection well region, and (iii) having a third side which abuts said n-type collection well region; and a circuit structure having a first input coupled to said n-type collection well region and a second input coupled to said p-type collection well region, wherein an output signal of said pixel sensor cell being the magnitude of the difference of a signal of said first input and a signal of said second input.