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Plastic electronics, thin-film-transistors on foil and ultra-thin chips on foil are technologies currently pursued to support the strongly emerging market for flexible electronics. Ultra-thin CMOS chips in such systems will provide solutions whenever high circuit performance and/or complexity are required. Ultra-thin Si chips (6 to 20 mum) are fabricated by using a recently introduced technology based...
A new ultrathin chip fabrication and assembly process, consisting of a preprocess module Chipfilm and a postprocess module Pick, Crack, and Place, is presented. In contrast to the established wafer thinning technique, the preprocessed wafer substrates are prepared with extremely narrow buried cavities beneath the chip areas at a well-defined distance from the wafer surface, thus precisely defining...
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