Provided is a liquid crystal light variable device having a liquid crystal cell, comprising a mixture of a liquid crystal material and one or more dichroic dyes interposed between a first and a second substrate, each substrate having a conductive layer disposed thereon. This means that the height of the base in the electronic device becomes relatively low, and so the height of the heat-radiatorwhich must be installed above the height of the basecan be increased, meaning that the required heat-radiating region can be secured and high-performance cooling becomes possible. In order to increase the integration degree, a bias line may be substituted with a reading word line in another row, or memory cells are connected in series so as to have a NAND structure, and a reading word line and a writing word line may be shared. The reset lockout portion prevents the reestablishing of electrical continuity in open conductive paths if the circuit interrupting portion is non-operational, if an open neutral condition exists or if the device is reverse wired.