| 摘要 |
<p>PURPOSE:To prepare a liquid crystal display element which can improve heat resistance of an orientation controlling film and adhesive strength with a glass substrate without providing a substrate film, by applying, drying and subjecting to an orientation treatment the mixture of a silanol oligomer subjected to silane modification contg. an alkyl group or silane modification contg. aromatic ring with an org. high polymer material. CONSTITUTION:A butyl trimethoxysilane is added to 10% butyl ''Cellosolve '' solution of a silanol oligomer expressed by a formulaIand this is stirred at 50- 70 deg.C in the gaseous nitrogen atmosphere and reacted to prepare a butyl silane modified silanol oligomer solution. Then, this solution and a solution of polyamide acid producing polyimide isoindoloquinazolinedion by ring closure reaction are mixed so as to be 1:1 weight ratio of a solid matter and are made to a uniform solution to obtain a stock solution for forming an orientation controlling film. By using this stock solution, a coating film is formed on a glass substrate having a patterned transparent electrode film by a spinner application and is dried at 250 deg.C for one hour to obtain about 800Angstrom orientation controlling film. The film formed by such a way keeps the capability which orientates a liquid crystal molecule up to about 450 deg.C.</p> |
