LIQUID CRYSTAL ALIGNMENT LAYER PROCESSING AND LIQUID CRYSTAL ELEMENT USING SAME

摘要

PROBLEM TO BE SOLVED: To eliminate striped threshold unevenness and to improve the display quality by performing a 2nd rubbing processing which determines an alignment direction after performing a 1st rubbing processing in a rubbing direction within a specific range about a regular alignment direction. SOLUTION: This method is a liquid crystal alignment method which rubs an alignment layer by rubbing a cylindrical rubbing roller, constituted by winding a rubbing buff flocked with short fiber, against the alignment layer formed on the upper and lower substrates for a liquid crystal display element obliquely to the moving direction of its rotary shaft and substrates. For the rubbing, the base fiber axial direction is stuck obliquely to the tangential direction of rotation of the rubbing roll and after the 1st rubbing processing is performed in a rubbing direction 9 within a range of 5 to 360 deg. to respective regular alignment directions 6 and 7 of the upper and lower substrates 5 within an angle of intersection of the regular alignment directions, the 2nd rubbing processing which determines the alignment direction is carried out. Consequently, striped unevenness is prevented from being generated and excellent display quality is obtained.