| 摘要 |
A liquid crystal grating, a 3D touch display device, and a method for driving a liquid crystal grating. The liquid crystal grating comprises: a first substrate (31); a second substrate (32), arranged opposite to the first substrate (31); a liquid crystal layer (33) filled between the first substrate (31) and the second substrate (32); a touch electrode layer (34) located at one side, of the first substrate (31), facing the liquid crystal layer (33); and a surface electrode (35) located at one side, of the second substrate (32), facing the liquid crystal layer (33). The touch electrode layer (34) comprises multiple stripe electrodes (3411) that are parallel to each other and are spaced according to a set distance, and the stripe electrodes (3411) in the touch electrode layer (34) are segmented according to a set pattern segmentation rule, to form at least two touch electrode units (341) that are not mutually electrically connected. For any touch electrode unit (341), when an external conductive object touches different positions of the touch electrode unit (341) in a single point touch manner, capacitance changes formed between the touch electrode unit (341) and the external conductive object are different from each other. |
