Liquid crystal display device and method for manufacturing the same

A liquid crystal display device comprising a first substrate having a common electrode, a second substrate having a pixel electrode, and a liquid crystal composition layer disposed between the first and second substrates, wherein a charge is applied across the common electrode and the pixel electrode substantially perpendicularly to the first and second substrates to control liquid crystal molecules in the liquid crystal composition layer,

• at least one of the first and second substrates having a vertical alignment layer that controls the orientation of the liquid crystal molecules in the liquid crystal composition layer substantially perpendicularly to surfaces of the first and second substrates adjacent to the liquid crystal composition layer, the vertical alignment layer comprising a polymer of a monofunctional reactive-group-containing polymerizable compound and a polyfunctional reactive-group-containing polymerizable compound,
• wherein the monofunctional reactive-group-containing polymerizable compound is a polymerizable compound represented by general formula (VI):
• (wherein X3 is hydrogen or methyl;
• Sp3 is a single bond, an alkylene group of 1 to 8 carbon atoms, or —O—(CH2)t— (wherein t is an integer of 2 to 7, and the oxygen atom is linked to the aromatic ring);
• V is a linear or branched polyvalent alkylene group of 2 to 20 carbon atoms or a polyvalent cyclic substituent of 5 to 30 carbon atoms, wherein the alkylene group in the polyvalent alkylene group is optionally substituted with oxygen such that no oxygen atoms are adjacent to each other, is optionally substituted with an alkyl group of 5 to 20 carbon atoms (wherein the alkylene group in the group is optionally substituted with oxygen such that no oxygen atoms are adjacent to each other), and is optionally substituted with a cyclic substituent;
• and W is hydrogen, halogen, or an alkylene group of 1 to 8 carbon atoms);
• and
• wherein the polyfunctional reactive-group-containing polymerizable compound is a polymerizable compound represented by general formula (V):
• (wherein X1 and X2 are each independently hydrogen or methyl;
• Sp1 and Sp2 are each independently a single bond, an alkylene group of 1 to 8 carbon atoms, or —O—(CH2)s— (wherein s is an integer of 2 to 7, and the oxygen atom is linked to the aromatic ring);
• U is a linear or branched polyvalent alkylene group of 2 to 20 carbon atoms or a polyvalent cyclic substituent of 5 to 30 carbon atoms, wherein the alkylene group in the polyvalent alkylene group is optionally substituted with oxygen such that no oxygen atoms are adjacent to each other, is optionally substituted with an alkyl group of 5 to 20 carbon atoms (wherein the alkylene group in the group is optionally substituted with oxygen such that no oxygen atoms are adjacent to each other), and is optionally substituted with a cyclic substituent;
• and k is an integer of 1 to 5).