Liquid crystal handwriting board and repairing method thereof

The invention discloses a liquid crystal handwriting board and a repairing method thereof. The liquid crystal handwriting board comprises a first substrate (100), a second substrate (200) and a bistable liquid crystal layer (300) located between the first substrate (100) and the second substrate (200). The first substrate (100) comprises a plurality of first signal line groups, wherein each first signal line group comprises at least two first signal lines; a plurality of second signal lines, wherein the first signal lines and the second signal lines intersect with each other; the control electrode (1) is located in an area defined by the two adjacent first signal lines and the two adjacent second signal lines; the first signal line and the second signal line are configured to jointly provide a control signal to the control electrode; wherein the first signal lines in the first signal line group are electrically connected with one another. The preparation yield and the repair yield of the liquid crystal handwr