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NOVEL DIAMINO COMPOUNDS, POLYAMIC ACID, POLYIMIDE, LIQUID-CRYSTAL ALIGNMENT FILM MADE FROM FILM OF THE POLYIMIDE, AND LIQUID-CRYSTAL DISPLAY ELEMENT CONTAINING THE ALIGNMENT FILM
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, (2008/06/13)
Diamino compounds represented by general formula (1); a polyamic acid and a polyimide both obtained from any of the diamino compounds; and an alignment film made from the polyimide. The alignment film is obtained by irradiating a film of the polyimide with polarized ultraviolet. (In general formula (1), G1represents a C2-20trivalent organic group; G2independently represents a single bond, - COO-, -NHCO-, -O-, -S-, etc.; G3represents a single bond or C1-20alkylene; X and Y each independently represents hydrogen, fluorine, cyano, C1-12alkyl, C3-8cycloalkyl, etc.; and m is an integer of 0 to 3).
