| 摘要 |
<p>A varnish composition which comprises a solvent and a polymer ingredient comprising a polyamic acid (B) (having residues which are derived from a tetracarboxylic acid and a diamine respectively and which are residues having no pendant groups or residues having a pendant C1-2 alkyl group or are residues having a composition comprising a mixture of these), a polyamic acid (A) (having residues which are derived from a tetracarboxylic acid and a diamine respectively and at least either of which is a residue having a pendant C3+ alkyl group or is a residue having a composition containing that residue), and a soluble polyimide, and in which the proportion of the polyamic acid (A) to the soluble polyimide is 1/99 to 99/1 by weight, the sum of the polyamic acid (A) and the soluble polyimide accounts for 1 to 80 wt.% of the polymer ingredient, the polyamic acid (B) accounts for 99 to 20 wt.% of the polymer ingredient, and the proportion of the polymer ingredient in the whole varnish composition is 0.1 to 40 wt.%. Also provided is a liquid-crystal display element having an alignment film formed from this varnish composition.</p> |
