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

本研究采用无线电力传输技术，通过消除电子纸终端的电池，开发更薄、更轻、更低成本的电子纸设备。由于一般使用的电磁感应传输距离限制在几厘米以内，我们采用了波接收无线电力传输技术，即使在1m以上的距离也能接收到电力。为了降低电子纸终端的功耗，我们将驱动和通信集成电路集成在一个芯片上，并改进驱动方法，开发了驱动电子纸小于10mw的技术。为了将该功率传输到1m外的电子纸终端，我们开发了单侧定向平面柔性天线和高效整流电路。

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.