Method and device for recovering liquid crystal in waste panel

The invention provides a method for recovering liquid crystal in a waste panel, comprising the following steps: (i) smashing the waste panel, soaking the smashed waste panel with solvent to dissolve the liquid crystal in the smashed waste panel and a package material to form extract liquid; (ii) cooling the extract liquid to lower the solubility of the package material, thus the package material is easily removed by filtering and adsorbing; (iii) heating the extract liquid to lead the solvent to form vapor and condensing to form recovered solvent; (iv) soaking the smashed waste panel with the recovered solvent to form the extract liquid; and (v) repeating steps (ii) to (iv) until the liquid crystal in the panel is dissolved in the extract liquid, and removing the solvent to obtain the recovered liquid crystal. The invention also provides a recovery device to carry out the above steps; the recovered liquid crystal contains extremely less solvent, the ratio of contained impurity is extremely low and the recover