Screen printing on film coated substrates
AssigneeIndustrial Technology Research Institute
InventorsDe-An Chang, Jin-Yuh Lu
Life of this patent
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Abstract
An improved method of screen printing is described wherein a double sided tape (dry film) is applied between the substrate and the screened-on paste. Since the dry film ensures the adhesion of the paste, no minimum thickness of paste is needed to attain good adhesion. By applying a thin layer of paste multiple times any thickness over a wide range can be obtained. Once the desired thickness of paste has been applied, the dry film is removed by firing in an oxidizing atmosphere. The method is applicable to, among others, phosphors, resistive materials, and conductive materials.
Claims16
A method for screen printing comprising the sequential steps of:
- providing a substrate having a top surface;
- laminating a dry film onto said top surface;
- screen printing a first layer of a paste onto said dry film;
- optionally screen printing additional layers of paste on said first paste layer;
- and
- firing the substrate, the dry film, and any of the paste layers, thereby removing said dry film.
A method for screen printing comprising the sequential steps of:
- providing a substrate having a top surface;
- laminating a dry film onto said top surface;
- through a patterned screen, screen printing a first layer of a paste onto said dry film;
- without changing the relative positions of the screen and the substrate, screen printing, through said patterned screen, additional paste layers;
- and
- firing the substrate, the dry film, and the paste layers, thereby removing said dry film.
Dependencies are inferred from the claim text.