Die head coating, coating device, and method of manufacturing die head for coating

摘要

During displacement relative to a substrate 1, a coating die head emits coating liquid out of a slot 12 a to a surface of the substrate. The coating die head includes a lip 12 b having a lip surface 12 b and a side having a side surface 12 c. A contact angle of the surface 12 c with respect to the coating liquid is greater than a contact angle of the surface 12 b with respect to the coating liquid. This configuration enhances stabilization of bead of the coating liquid during application process of the coating liquid, preventing stripes and steps from appearing in the coating layer. This coating die head makes it possible to carry out high precision coating required for fabrication of color filters for liquid crystal displays.