Enhancement of fine line print resolution due to coating of screen fabrics
In LTCC technology, printing is the most reliable and cost-effective processfor line deposition on ceramic layers. An enhancement of resolution is required to realize modules in the higherst frequency range which requires small lines and distances. The fine line print resolution is limited by two factors of processing. One ist paste rheology itself, including viscosity particle size and thixotropic behavior. The other factor is the screen with limitations in mesh size, wire thickness, calendering, and angle of the screen fabric in the frame. From the viewpoint of the screen, the idea was to improve the fabricby coating.