Liquid crystal display device and fabricating method thereof

A liquid crystal display device, comprising:

• a thin film transistor array substrate;
• a color filter array substrate;
• a liquid crystal which is provided between the thin film transistor array substrate and the color filter array substrate,
• a first storage capacitor for storing a pixel voltage charged into the pixel electrode;
• a second storage capacitor for storing a signal sensed by the sensor thin film transistor;
• an integrated circuit for extracting the sensing signal stored in the second storage capacitor;
• a second thin film transistor connected to the second storage capacitor and the pre-stage gate line, and for selectively supplying the sensing signal to the integrated circuit;
• and
• a sensing signal transmitting line substantially parallel to the data line with having the pixel area therebetween, and for transmitting a sensing signal from the second thin film transistor into the integrated circuit,
• wherein the thin film transistor array substrate including a gate line and a data line crossing each other on a substrate to define a pixel area in which a pixel electrode is positioned;
• a first thin film transistor at an intersection area of the gate line and the data line;
• a sensor thin film transistor that senses light having image information and supplied with a first driving voltage from the data line;
• and a driving voltage supply line substantially in parallel to the gate line to supply a second driving voltage to the sensor thin film transistor,
• wherein the color filter array substrate including a black matrix for segmenting the pixel area and for preventing light leakage;
• a color filter formed at the cell area segmented by the black matrix,
• wherein a light receiving area is provided at an area corresponding to the sensor thin film transistor in the black matrix of the color filter array substrate.