Patent ID: 8003219

Claim:
A coating liquid including metal materials reacting with a ligand represented by Chemical Formula 1 and including indium (In), tin (Sn), or both thereof, wherein each of R 21 -R 24 in the Chemical Formula 1 is one of: (1) a group represented by C l H 2l+1 (aforementioned l is an integral number of 0 to 4); (2) a group represented by C n H 2n−1 (aforementioned n is an integral number of 2 to 4); (3) a group represented by COOR (aforementioned R is C p H 2p+1 (aforementioned p is an integral number of 0 to 4) or a group represented by R═C 6 H 5 ); (4) a group represented by aldehyde, ketones, COC q H 2q+1 (aforementioned q is an integral number of 0 to 4), or benzophenone; (5) hydroxyl (OH) or ethers; (6) amine (NH 2 ) or alkylamine; (7) amide; (8) halogens; (9) nitrile (CN); and (10) nitro (NO 2 ), and wherein X 11 and X 12 in the Chemical Formula 1 is hetero atoms.