Patent ID: 8081147

Claim:
A liquid crystal display device comprising: a plurality of pixel regions arranged on a first substrate to be spaced from each other; gate lines formed to separate the pixel regions in a first direction; driving voltage lines parallel to the gate lines; data lines formed between the pixel regions in a second direction intersecting the first direction; storage lines parallel to the driving voltage lines; read-out lines in the second direction, the read-out lines being separated from neighboring data lines by one pixel region; display transistors formed at intersecting portions of the gate lines and the data lines; pixel electrodes formed in the pixel regions; output switching transistors formed between the gate lines and the read-out lines; capacitors formed between the output switching transistors and the storage lines; and photo sensing transistors formed on the output switching transistors and the storage lines, wherein the data lines include first to third data lines to which signals for displaying red, green and blue colors are applied respectively, and the pixel regions are formed such that red, green and blue pixel regions are arranged in order, and the read-out lines are alternately and uniformly formed at the red, green and blue pixel regions.