PURPOSE: To improve both of display performance and reliability by injecting a light controllable layer forming material at a uniform and desired compsn. ratio into a cell and sufficiently curing this material by photosetting and thermosetting.

CONSTITUTION: A pair of glass substrates with ITO are stuck to each other via a spacer and sealing resin to produce the empty cell 4 having a discharge port and injection port; thereafter, the empty cell 4 is carried on a hot plate 3 with a temp. controller and is held at a specified temp. The light controllable layer forming material consisting of a liquid crystal material, photopolymerizable compsn. and photopolymn. initiator is put into an isotropic state by heating and stirring and is then poured into a liquid crystal pool 6 subjected to temp. control, by which the light controllable layer forming material is maintained in a uniform state. In succession, the empty liquid crystal 4 is immersed into this liquid crystal pool 6 and the light controllable layer forming material is injected therein from the injection port 5. The air is discharged by a reduced pressure from the discharge port 1 to complete the injection. The panel coated with a photopolymerizable sealing material in the aperture after the injection is irradiated with UV rays and is then subjected to a heat treatment at a temp. higher than the photosetting temp.