Patent ID: 7998319

Claim:
A lift-off process for formation of miniaturized getter deposits comprising the following steps: forming a layer of a photosensitive polymer on a support; selectively exposing to light a first portion of the polymer layer to cause a chemical modification in the polymer portion and leaving a second portion unexposed; removing with a first solvent only one of the first and second portions to form in the polymer layer at least one cavity whose bottom wall comprises a surface of the support; forming by cathodic deposition a thin layer of a getter material on the bottom wall of the cavity and on the portion of the polymer layer not removed by the first solvent; and removing with a second solvent the polymer portion not removed by the first solvent, leaving at least the getter material deposit on the support surface; wherein the cathodic deposition is not preceded by either operations or treatments for formation of recesses in a lower part of the polymer layer, and wherein the cathodic deposition is carried out with a chamber pressure between about 1 and 5 Pa and with a specific power between 6 and 13 W per square centimeter of area of a surface of a target actually interested by plasma for the deposition.