| abstract |
The present invention provides a polyimide dry film and use thereof. The polyimide dry film includes a base material and a polyimide layer, wherein the polyimide layer includes: (a) a polyimide precursor Or a soluble polyimide and (b) a solvent, wherein the solvent comprises a hydrophilic solvent and a hydrophobic solvent, and the weight ratio of the hydrophilic solvent to the hydrophobic solvent is between 0.05 and 2. The polyimide dry film of the present invention has water absorption, and its properties are relatively stable even in the presence of water, and the surface is not sticky, and the formed polyimide has excellent physical properties. The processing process of water or aqueous solution forms a cover film with excellent physical properties. |