| 摘要 |
PROBLEM TO BE SOLVED: To provide an oriented film bringing effects on a liquid crystal display element such as (1) hardly receiving effects on a pre-tilt angle caused by pushing-in strength on rubbing and a temperature condition on heating, (2) without causing an orientation defect, (3) giving an appropriate electric voltage-holding rate, (4) hardly occurring scorching, etc., and a new polyimide or a polyamide acid derivative as the raw marerials of the oriented film. SOLUTION: This varnish containing a polyimide having a constituting unit of formula (1) (wherein, R<SP>1</SP>is a trivalent organic group, and the constitution of the R<SP>1</SP>may be different by each of the constituting units, but in the case that the structure of the R<SP>1</SP>is not different by each of the repeating units, then the structure of the R<SP>1</SP>does not contain 1, 4-phenylene) or a polyamic acid derivative having a constituting unit of formula (2) (wherein, R<SP>2</SP>is H or a 1-10C alkyl) and a polymer is obtained. COPYRIGHT: (C)2004,JPO
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