Inkjet print head and method for manufacturing the same

A method of manufacturing a inkjet print head, the method comprising:

• forming a print head assembly, the print head assembly being connected to a jet assembly and a printed circuit substrate;
• forming a first mask pattern on a connection electrode of the printed circuit substrate;
• forming a flexible layer on an inner surface and an outer surface of the print head assembly having the first mask pattern;
• forming a diffusion barrier layer on the flexible layer;
• forming a second mask pattern on a bottom surface of a nozzle plate of the jet assembly;
• forming a hydrophobic layer on the diffusion barrier layer and the second mask pattern;
• and
• removing the first and second mask patterns to form a barrier coating layer on the inner and outer surfaces of the print head assembly, the barrier coating layer comprising the flexible layer, the diffusion barrier layer, and the hydrophobic layer.

An inkjet print head, comprising:

• a jet assembly comprising a nozzle plate, the nozzle plate comprising an ink transferring path and a jet, the ink transferring path being disposed in the nozzle plate and the jet being disposed on a bottom surface of the nozzle plate, the jet being configured to transfer ink through the jet;
• a printed circuit substrate connected to the jet assembly, the printed circuit substrate comprising an integrated circuit and a connection electrode;
• and
• a barrier coating layer formed on the jet assembly and the printed circuit substrate and covering a surface of the printed circuit substrate and an inner surface and an outer surface of the jet assembly except for a bottom surface of the nozzle plate and a surface of the connection electrode.