Patent ID: 8492183

Claim:
A method of forming a film pattern with micro-pattern, comprising: Step 11 of depositing a thin film on a substrate; Step 12 of jetting or dropping etchant on the thin film with a predetermined etching pattern by an inkjet print device; Step 13 of etching the thin film by the etchant; and Step 14 of cleaning the thin film to form a film pattern on the substrate, wherein in the Step 12 , the viscosity of the etchant is smaller than 20 mPa·s, the surface tension of the etchant is 20 mN/m˜400 mN/m, and the wettability contact angle of the etchant is 60 degree˜90 degree, and wherein the film pattern and the etching pattern are complementary patterns, a distance from an edge of the etching pattern to a corresponding edge of the film pattern is 30 μm˜50 μm when the etchant is corrosive liquid, and the distance from the edge of the etching pattern to the corresponding edge of the film pattern is 10 μm˜30 μm when the etchant is corrosive paste.