BAKING HARDENING TYPE COLD ROLLED STEEL SHEET HAVING REDUCED PLANE ANISOTROPY AND PROCESS FOR PRODUCING THE SAME

A cold rolled steel sheet comprising C, Cu, S, Al, N, P, B, Ti, Nb and the balance of Fe and other unavoidable impurities, which is capable of enhancing yield strength and lowering in-plane anisotropy by CuS precipitates and AlN precipitates in bake-hardening type interstitial free steel, and a method for manufacturing the same are provided. A bake-hardening type cold rolled steel sheet with excellent in-plane anisotropy comprises, by weight percent, 0.001 to 0.01% of C, 0.01 to 0.2% of Cu, 0.005 to 0.08% of S, 0.1% or less of Al, 0.004 to 0.02% of N, 0.2% or less of P, 0.0001 to 0.002% of B, 0.005 to 0.15% of Ti and 0.002 to 0.04% of Nb with the balance being Fe and other inevitable impurities, wherein the Cu, S, Al, N, C, Ti and Nb satisfy 1