TFT substrate, LCD device using same and method for manufacturing TFT substrate

A liquid crystal display (LCD) device, comprising:

• a color filter substrate;
• a thin film transistor (TFT) substrate opposite to the color filter substrate;
• and
• a liquid crystal layer sandwiched between the color filter substrate and the TFT substrate;
• wherein the TFT substrate comprises a plurality of TFTs and at least one photosensitive capacitor, the at least one photosensitive capacitor comprises a first electrode, a second electrode opposite to the first electrode, and an insulator media sandwiched between the first electrode and the second electrode, the second electrode is made of semiconductor material, and a capacitance of the at least one photosensitive capacitor is variable on condition that external light beams are applied to the second electrode;
• wherein each TFT comprises a gate electrode, an insulating layer covering the gate electrode, and a semiconductor layer configured as a channel region of the TFT located on the insulating layer, the gate electrode of the TFT and the first electrode of the at least photosensitive capacitor are formed at a same layer, the insulation layer of the TFT further covers the first electrode of the at least one photosensitive capacitor, and the semiconductor layer of the TFT and the second electrode of at least one photosensitive capacitor are formed at a same layer.