There is provided a pixel structure including a top electrode, multiple bottom electrodes, an optically sensitive material layer and a metal wire layer. The optically sensitive material layer is arranged between the top electrode and the multiple bottom electrodes. The bottom electrodes corresponding to different pixels are separated from one another and have a gap therebetween. The metal wire layer has a reflective metal layer arranged opposite to the gap. The reflective metal layer reflects residual stray light penetrating the optically sensitive material layer by the surface plasmon resonance effect.