| 摘要 |
<p>PURPOSE:To obtain an uniform orientation power by thermally treating a horizontal orientation layer after rubbing it, thereby making the difference of depth of fine grooves on the surface of the horizontal orientation layer due to rubbing small and making the shape of the grooves smooth. CONSTITUTION:The horizontal orientation layer 5 and 6 are formed by baking a polyimide resin on substrates 1 and 2 formed electrodes 3 and 4 thereon followed by offset printing said layers 5 and 6 so as to be 700Angstrom film thickness and baking it at the film forming temp. of 180 deg.C, for 1hr, respectively. Subsequently, the horizontal orientation layers 5 and 6 are rubbed in the direction of uniaxial directions 7 and 8 by a rubbing machine followed by thermally treating for 1hr at more than the film- forming temp. for example, 300 deg.C respectively. And, the substrates 1 and 2 are disposed in such way that the rubbing directions 7 and 8 of the substrates 1 and 2 are almost parallel in the same direction with each other with a distance of 2mum. The ferroelectric liquid crystal 9 is enclosed a space between the substrates 1 and 2. Thus, reducing of the difference of the depth of the fine grooves on the surface of the horizontal orientation layer due to rubbing, smoothing of the shape of the grooves, and debarring of the grooves are executed, by providing the thermal treating step after the rubbing step.</p> |
