46.4: Distinguished Student Paper: A 2-Inch a-Si:H TFT-LCD with an Embedded Sensor

We developed a 2 inch, QCIF (160×128, black and white), amorphous silicon thin-film transistor liquid-crystal display with an embedded sensor on glass. A pixel is divided into LCD and sensor, in which the size of sensor is optimized to have the linear relationship between the output signal voltage and signal integration time. A very thin top glass was used to make a TFT-LCD. A metal mask is put on the LCD with a top glass of 0.1 mm to improve the contrast of the image.