Electrostatic latent image forming medium using TFT array and image forming apparatus including the electrostatic latent image forming medium

An image forming apparatus is provided. The image forming apparatus includes an electrostatic latent image forming medium forming an electrostatic latent image thereon, a toner supplying unit supplying toner to the electrostatic latent image and developing the electrostatic latent image into a toner image, and a transferring unit transferring the toner image to a printing medium. The electrostatic latent image forming medium includes a frame 110, a thin film transistor (TFT) array 120 stacked on a surface of the frame 110 and including a plurality of TFTs 122a,122b, and a capacitor layer 130 including a common electrode 132 formed on the TFT array 120, a dielectric layer 134 stacked on the common electrode 132, and a plurality of pixel electrodes 136 respectively corresponding to pixels, arranged on a surface of the dielectric layer 134, and connected to drains of the TFTs 122a,122b, respectively. When electric charges are selectively applied to the pixel electrodes 136 via the TFTs 122a,122b, or when electric charges of the pixel electrodes 136 are selectively eliminated via the TFTs 122a,122b, an electrostatic latent image with a potential different from a potential of its surrounding area is formed on the surface of the electrostatic latent image forming medium.