P‐7: 4 Inch a‐Si TFT‐LCD with an Embedded Color Image Scanner

We developed a 4 inch (QVGA, 320×240, 262,144 colors) amorphous silicon thin-film transistor liquid-crystal display (TFT-LCD) with an embedded color image scanner. with this panel, it is possible to get a copy of photo or document and to display it on the screen itself. The sensing device and display device are fabricated by the conventional a-Si processes at the same time. We focused on making the thinner panel to get better quality of image obtained from scanning.