The polymer-stabilized ferroelectric liquid crystal (PS-FLC) photocured under the application of an AC electric field shows a monostable V-shaped electrooptical characteristics. However, it is not clear how the V-shaped electrooptical characteristics can be realized in the PS-FLC. In this study, we have investigated in detail the elecrooptical characteristics, microscopic texture and X-ray diffraction of PS-FLC, and the effect of the polymer stabilization on the molecular alignment structure. As a result, it is guessed that two types of domain, in which there are two alignment directions monostabilized by the polymer photocured under the application of a bipolar electric field, would coexist.