Liquid adhesive application by contact printing

摘要

A method and structure for forming an ink jet printhead can include the use of a transfer pad to transfer an adhesive solution to an ink jet printhead substrate. The adhesive solution can be placed within a patterned recess of a cliché and then an upper surface of the adhesive solution can be gelled. A surface of the transfer pad contacts the gelled upper surface and transfers the adhesive solution to the ink jet printhead substrate. During the transfer, a lower surface of the adhesive solution gels. During contact with the ink jet printhead substrate, the gelled lower surface adheres to the ink jet printhead substrate while the gelled upper surface releases from the transfer pad.

主权项

1. A method for forming an ink jet printhead, comprising:
placing an adhesive solution comprising an adhesive and a solvent into a patterned recess in a cliché; gelling an upper surface of the adhesive solution; contacting the gelled upper surface of the adhesive solution and a plurality of half-tone posts within the patterned recess of the cliché with a surface of a transfer pad such that the gelled upper surface adheres to the surface of the transfer pad, wherein the plurality of half-tone posts have a height of between about 15 μm and about 35 μm and a width or diameter of between about 25 μm and about 50 μm; with the gelled upper surface adhering to the transfer pad, transferring the adhesive solution to a position over a substrate wherein, during the transferring of the adhesive solution, the solvent at least partially evaporates from the adhesive solution to form a gelled lower surface of the adhesive solution; contacting the gelled lower surface of the adhesive solution with an ink jet printhead substrate; and lifting the transfer pad away from the ink jet printhead substrate such that the gelled lower surface of the adhesive solution adheres to the ink jet printhead substrate and the gelled upper surface of the adhesive solution releases from the surface of the transfer pad.