Liquid crystal handwriting pad, handwriting device, and method for controlling handwriting device

The invention discloses a liquid crystal handwriting board, a handwriting device and a method for controlling the handwriting device, and belongs to the technical field of display. The liquid crystalhandwriting board comprises a liquid crystal panel and a driving assembly. The liquid crystal panel comprises a first substrate, a second substrate, a liquid crystal layer, and a liquid crystal layerlocated between the first substrate and the second substrate, wherein the first substrate and the second substrate are oppositely arranged, . The pixel electrodes in the first substrate in the liquidcrystal panel are the plurality of blocky electrodes, so that when the liquid crystal handwriting board is in the erasing mode, the driving assembly electrically connected with the liquid crystal panel can apply pixel voltage to the blocky pixel electrodes in the to-be-erased area based on the position information of the to-be-erased area; so that a voltage difference is formed between the pixel electrode in the to-be-erase