| 摘要 |
PURPOSE:To improve the effect of surface cleaning and to improve the yield of preparing a liquid crystal element to a greater extent by using a high-velocity liquid jet to rub respective substrates for sandwiching a liquid crystal layer. CONSTITUTION:A polyimide resin is coated on the soda lime glass substrates 12 formed thereon with thin transparent conductive films and is polymerized by heating to form oriented films. The oriented films are rubbed by injecting a gushing liquid of water or the like from a nozzle 11 for injection of a high- velocity liquid jet working device. The injection is executed at 30-60 deg. angle and 10-100m/s speed. Static electricity is not generated all during blasting and the dust, even when stuck to the films, is removed by the jet liquid according to such high-velocity liquid jet method; therefore, the surface contamination is exceedingly decreased and the yield of preparing the liquid crystal display element is improved to a greater extent. |
