Patent ID: 7910025

Claim:
A solution composition comprising one or more solvent(s) and one or more conjugated aromatic polymer(s) having a polystyrene-reduced Z-average molecular weight of 1.0×10 5 to 5.0×10 6 , and having at least one repeating unit selected from the group consisting of formulas (5-1), (5-2), (5-3), (5-4) and an amount of a repeating unit other than the formulas (5-1), (5-2), (5-3), and (5-4) which is 30% by moles or less based on the sum of total repeating units: where R represents an alkyl group, an alkoxy group, an alkylthio group, an alkylsilyl group, an alkyl amino group, a hydroxyl group, an amino group, a carboxyl group, an aldehyde group, a cyano group, an aryl group, an aryloxy group, an arylthio group, or an arylalkyl group; and where e1 represents an integer of 0 to 5, and e2 represents an integer of 0 to 3; f1 represents an integer of 0 to 5, and f2 represents an integer of 0 to 3; g1 represents an integer of 0 to 5, and g2 represents an integer of 0 to 3; h1 represents an integer of 0 to 5, and h2 represents an integer of 0 to 3.