To align liquid crystals on an alignment layer, the rubbing method is generally used. But it has some problems such as the generation of dust, and the difficulty of the quantitative control of rubbing intensity. To overcome these problems, we developed new photo-active mixture ofw-dye (see the Fig. 1(a)) and PVA which can be applied as an alignment material for liquid crystal display (LCD). Using this polymer, we made cells and observed properties of a photo-alignment layer and LC alignment. From these results, we discussed the mechanism of LC and polymer alignment by UV irradiation in photo-alignment layer. We show that this new alignment material may be used in commercial LCDs.