Development of wireless power transmission system for electronic paper using one-sided directional flexible antenna

本研究旨在通过无线电能传输技术消除电子纸终端中的电池，以开发更薄、更轻、更低成本的电子纸设备。由于常用的电磁感应传输距离限制在几厘米或更短，我们采用了波接收无线电能传输技术，即使在1m或更远的距离也能接收到电能。我们将驱动和通信IC集成到一个芯片中，并通过改进驱动方法来降低电子纸终端的功耗，开发了一种可以驱动小于10 mW的电子纸的技术。进一步，将这种电能传输到1m外的电子纸终端，我们研制了一种高效率的单向定向平面柔性天线和整流电路。

By eliminating the battery from electronic paper terminal using the wireless power transmission technology, this study aims to develop thinner, more lightweight and lower cost electronic paper device.Because the transmitting distance of generally used electromagnetic induction is limited to a few cm or less, we employed the wave received wireless power transmission technology which can receive the power even in the distance 1m or more.We developed the technology which can drive the electronic paper less than 10 mW by combining the driving and communicating ICs into one chip and by improving the driving method for lower power consumption of the electronic paper terminals.Further, to transmit this power to the electronic paper terminal in 1 m away, we have developed a unilateral directional flat flexible antenna and rectifier circuit with high efficiency.