Mass Production Development of MicroPower-On-Chip

"High performance power sources with lightweight and small volume are desirable to satisfy miniaturization in sensors, actuators, smart card, telecommunications, and space applications. High power density, energy density and long cycle life are defined ashigh performance for energy sources. In today's consumer market, there is a strong trend towards making consumer equipment smaller, portable and more highly functional. This, in turn, is greatly increasing demands for battery power systems to be light andsmall but still provide long run times.A common problem of in using a battery-only power source is that the capacity of the battery drops off dramatically at high discharge rates. With a combination of battery and supercapacitor to form a power pack, the power density of a 0.84 watt thinbattery can be doubled with a 30 mF supercapacitor in parallel. At the mean time, the run time of the thin battery can be improved by a factor of 5.Therefore, we proposed to develop a screen printing process of fabricating thin film Zn-alkaline battery/supercapacitor hybrid power pack on plastic and chip: i.e. a micropower-on-chip technology with low cost. The power requirement for thin film power source can be divided into several categories: 1) high voltage and low current, such as for MEMs; 2) Low voltage and high current, such as for microprocessors, 3) Low voltage and low current, such as for memorybackup in space, and 4) low voltage high pulse power and volume-less, such as for cell phone and smart card."