Patent ID: 9562299
Date: 2017-02-07
CPC Classifications: C25D

Claim:
1. An electroplating solution comprising: an aqueous electrolyte solution including water soluble copper salts, sulfide ions and chloride ions; an accelerator including an organic material having sulfur (S), the accelerator accelerating copper (Cu) reduction; a suppressor including a polyether compound, the suppressor selectively suppressing the copper reduction; and a leveler including at least one of an N-vinyl pyrrolidone compound represented by chemical formula (1) and a copolymer of diallyldimethyl ammonium chloride (DADMAC) and N-vinyl pyrrolidone represented by chemical formula (3) at a concentration of 0.1 g/L to 10 g/L in the electroplating solution, wherein each of R