Patent ID: 9708507
Date: 2017-07-18
CPC Classifications: B05D,C08G,C09D,C23C,H01L

Claim:
1. A method for forming a polyimide film on a surface of a target object in which a bonding layer and a through via are formed, the method comprising: performing a treatment for increasing resistance of the polyimide film to a cleaning agent containing an alkaline compound subsequent to formation of the polyimide film within a processing chamber of a film forming apparatus where the polyimide film is formed, the treatment being performed at a temperature less than a heat resistance temperature of the bonding layer without unloading the target object from the processing chamber after the formation of the polyimide film; anisotropically etching the polyimide film with the treatment for increasing resistance such that the polyimide film remains on a side surface of the through via; and performing a cleaning process using the cleaning agent with respect to the polyimide film remaining on the side surface of the through via.