ENCAPSULATION OF INKJET HEATER CHIP FOR ION BEAM CROSS-SECTION POLISHING AND METHOD OF PREPARING CHIP CROSS-SECTION SAMPLE

摘要

A method for preparing an integrated circuit or iincro-electo-mechanical system chip sample for ion cross-section polishing is provided. The method includes preparing a polymer coating formulation. The polymer coating formulation includes a novolac epoxy resin, a bisphenol-A/epichlorhydrin epoxy resin, a photoacid generator, an adhesion promoter, and a mixture of acetophenone, cyclohexanone and butyrolactone organic solvents. The integrated circuit or micro-electro -mechanical system chip sample is encapsulated by the polymer coating formulation, wherein the chip sample is then ready for ion beam cross-section polishing. A cross-section sample of integrated circuit or micro-electro-mechanicai system chip is prepared by polishing the obtained polymer encapsulated integrated circuit or micro-electro-mechanical system chip with ion beam cross-section polisher. The disclosed method allows the cross-section sample to be obtained at a reduced polishing time. Moreover, a good quality and larger cross-sectional area of the sample is obtained, thus allowing for accurate inspection or analysis of the integrated circuit or micro-electro-mechanical system chip.