CPU for HF and UHF Operation on the Glass and Flexible Substrates

In 2005, we developed the first 13.56 MHz flexible RFCPU (8 bit) in the world by the flexible LSI (LSI on plastic) manufacturing technology, which is based on the manufacturing technology of LSI on glass and the peeling and transferring technology. In 2006, we considered the possibility of realizing a UHF RFCPU (8 bit) using a radio signal in the UHF band (915 MHz). A radio signal in the UHF band is in principle more capable of long distance communication than the 13.56 MHz radio signal. In this paper, we will report the results of test producing the high-performance 13.56 MHz (HF) RFCPU and UHF RFCPU, as an examination of the potential of the high-function RFCPU by the glass LSI manufacturing process and the flexible LSI manufacturing process.