A new method to increase the operation speed for optical rewritable (ORW) liquid crystal alignment technology has been proposed. Conventionally, we prepared the azo dye layer by spin-coating solution of SD1 with different concentrations. The new method is to form a super thin azo-dye molecular alignment layer for LC display cell without spin-coating and rubbing processes. Compared to the conventional one, the new method provides much smaller azimuthal anchoring energy, and increases the rewriting speed a lot. Providing the advantages of conventional photoalignment methods, the use of super thin layer can obviously improve the operation speed of ORW technology for e-paper application.