We have studied the relationship between the UV irradiation time and electrooptical properties in the UV curable polymer dispersed liquid crystal (PDLC) film. Memory-type PDLC films are prepared with various terms of UV irradiation and the changes of transmittance, capacitance and resistance of the PDLC film are measured while the phase separation is advanced. The driving voltage increases in the PDLC film which is made with an insufficient or excessive UV irradiation. The memory transmittance also depends on the UV irradiation time.