Liquid crystal display device with a
black matrix (31), multiple
data lines (D1, D2, D3, D4 and D5) and multiple scanning lines (S1, S2 and S3), wherein the multiple
data lines (D1, D2, D3, D4 and D5) are isolated and intersect the multiple scanning lines (S1, S2 and S3), and the multiple
data lines (D1, D2, D3, D4 and D5) and the multiple scanning lines (S1, S2 and S3) define multiple pixel units, Each of the multiple pixel units has a common
electrode (10, 20, 40, 50 and 60) and a pixel
electrode (11, 21, 41, 51 and 61), an insulating layer (12, 22 and 42) is arranged between the common
electrode (10, 20, 40, 50 and 60) and the pixel electrode (11, 21, 41, 51 and 61), a field is formed within the plane through the common electrode (10, 20, 40, 50 and 60) and the pixel electrode (11, 21, 41, 51 and 61) when a
voltage is applied to the common electrode (10, 20, 40, 50 and 60) and to the pixel electrode (11, 21, 41, 51 and 61), and several of the common electrodes (10, 20, 40, 50 and 60) are connected to each other to form a common electrode layer, the common electrode layer being further suited to form touch electrodes (15 and 45) and touch
signal veins (16, 46, 56 and 66), each of the touch
signal veins (16, 46,56 and 66) is electrically connected to the corresponding touch electrode (15 and 45), and several first columns (19, 29, 49, 59 and 69), which run parallel to the several data rows, are each located between adjacent touch electrodes (15) or between the touch electrode (15 and 45) and the adjacent touch
signal wire (16, 46, 56 and 66), with the exception of a connection point (161, 461 and 561) between the touch signal wire (16, 46 and 56) and the touch electrode (15, 45), , the first slit (19, 29, 59 and 69) overlaps with the pixel electrode (11, 21, 51 and 61) within the pixel unit, wherein the
black matrix (31) is configured to shield the data rows (D1, D2, D3, D4 and D5) and the sample rows (S1, S2 and S3), wherein the first slit (29 and 69) overlaps with the sample row (S1, S2 and S3) and the
black matrix (31) comprises a first extension section (33) extending from a region corresponding to an overlap region of the first slit (29 and 69) and the sample row (S1, S2 and S3) to the interior of the pixel unit, and wherein the first extension section (33) overlaps with the first slit (29 and 69).